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Diffstat (limited to 'third_party/googletest/googlemock/include/gmock/gmock-matchers.h')
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diff --git a/third_party/googletest/googlemock/include/gmock/gmock-matchers.h b/third_party/googletest/googlemock/include/gmock/gmock-matchers.h deleted file mode 100644 index c94f582..0000000 --- a/third_party/googletest/googlemock/include/gmock/gmock-matchers.h +++ /dev/null @@ -1,5255 +0,0 @@ -// Copyright 2007, Google Inc. -// All rights reserved. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -// -// Author: wan@google.com (Zhanyong Wan) - -// Google Mock - a framework for writing C++ mock classes. -// -// This file implements some commonly used argument matchers. More -// matchers can be defined by the user implementing the -// MatcherInterface<T> interface if necessary. - -#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_MATCHERS_H_ -#define GMOCK_INCLUDE_GMOCK_GMOCK_MATCHERS_H_ - -#include <math.h> -#include <algorithm> -#include <iterator> -#include <limits> -#include <ostream> // NOLINT -#include <sstream> -#include <string> -#include <utility> -#include <vector> -#include "gtest/gtest.h" -#include "gmock/internal/gmock-internal-utils.h" -#include "gmock/internal/gmock-port.h" - -#if GTEST_HAS_STD_INITIALIZER_LIST_ -# include <initializer_list> // NOLINT -- must be after gtest.h -#endif - -namespace testing { - -// To implement a matcher Foo for type T, define: -// 1. a class FooMatcherImpl that implements the -// MatcherInterface<T> interface, and -// 2. a factory function that creates a Matcher<T> object from a -// FooMatcherImpl*. -// -// The two-level delegation design makes it possible to allow a user -// to write "v" instead of "Eq(v)" where a Matcher is expected, which -// is impossible if we pass matchers by pointers. It also eases -// ownership management as Matcher objects can now be copied like -// plain values. - -// MatchResultListener is an abstract class. Its << operator can be -// used by a matcher to explain why a value matches or doesn't match. -// -// TODO(wan@google.com): add method -// bool InterestedInWhy(bool result) const; -// to indicate whether the listener is interested in why the match -// result is 'result'. -class MatchResultListener { - public: - // Creates a listener object with the given underlying ostream. The - // listener does not own the ostream, and does not dereference it - // in the constructor or destructor. - explicit MatchResultListener(::std::ostream* os) : stream_(os) {} - virtual ~MatchResultListener() = 0; // Makes this class abstract. - - // Streams x to the underlying ostream; does nothing if the ostream - // is NULL. - template <typename T> - MatchResultListener& operator<<(const T& x) { - if (stream_ != NULL) - *stream_ << x; - return *this; - } - - // Returns the underlying ostream. - ::std::ostream* stream() { return stream_; } - - // Returns true iff the listener is interested in an explanation of - // the match result. A matcher's MatchAndExplain() method can use - // this information to avoid generating the explanation when no one - // intends to hear it. - bool IsInterested() const { return stream_ != NULL; } - - private: - ::std::ostream* const stream_; - - GTEST_DISALLOW_COPY_AND_ASSIGN_(MatchResultListener); -}; - -inline MatchResultListener::~MatchResultListener() { -} - -// An instance of a subclass of this knows how to describe itself as a -// matcher. -class MatcherDescriberInterface { - public: - virtual ~MatcherDescriberInterface() {} - - // Describes this matcher to an ostream. The function should print - // a verb phrase that describes the property a value matching this - // matcher should have. The subject of the verb phrase is the value - // being matched. For example, the DescribeTo() method of the Gt(7) - // matcher prints "is greater than 7". - virtual void DescribeTo(::std::ostream* os) const = 0; - - // Describes the negation of this matcher to an ostream. For - // example, if the description of this matcher is "is greater than - // 7", the negated description could be "is not greater than 7". - // You are not required to override this when implementing - // MatcherInterface, but it is highly advised so that your matcher - // can produce good error messages. - virtual void DescribeNegationTo(::std::ostream* os) const { - *os << "not ("; - DescribeTo(os); - *os << ")"; - } -}; - -// The implementation of a matcher. -template <typename T> -class MatcherInterface : public MatcherDescriberInterface { - public: - // Returns true iff the matcher matches x; also explains the match - // result to 'listener' if necessary (see the next paragraph), in - // the form of a non-restrictive relative clause ("which ...", - // "whose ...", etc) that describes x. For example, the - // MatchAndExplain() method of the Pointee(...) matcher should - // generate an explanation like "which points to ...". - // - // Implementations of MatchAndExplain() should add an explanation of - // the match result *if and only if* they can provide additional - // information that's not already present (or not obvious) in the - // print-out of x and the matcher's description. Whether the match - // succeeds is not a factor in deciding whether an explanation is - // needed, as sometimes the caller needs to print a failure message - // when the match succeeds (e.g. when the matcher is used inside - // Not()). - // - // For example, a "has at least 10 elements" matcher should explain - // what the actual element count is, regardless of the match result, - // as it is useful information to the reader; on the other hand, an - // "is empty" matcher probably only needs to explain what the actual - // size is when the match fails, as it's redundant to say that the - // size is 0 when the value is already known to be empty. - // - // You should override this method when defining a new matcher. - // - // It's the responsibility of the caller (Google Mock) to guarantee - // that 'listener' is not NULL. This helps to simplify a matcher's - // implementation when it doesn't care about the performance, as it - // can talk to 'listener' without checking its validity first. - // However, in order to implement dummy listeners efficiently, - // listener->stream() may be NULL. - virtual bool MatchAndExplain(T x, MatchResultListener* listener) const = 0; - - // Inherits these methods from MatcherDescriberInterface: - // virtual void DescribeTo(::std::ostream* os) const = 0; - // virtual void DescribeNegationTo(::std::ostream* os) const; -}; - -namespace internal { - -// Converts a MatcherInterface<T> to a MatcherInterface<const T&>. -template <typename T> -class MatcherInterfaceAdapter : public MatcherInterface<const T&> { - public: - explicit MatcherInterfaceAdapter(const MatcherInterface<T>* impl) - : impl_(impl) {} - virtual ~MatcherInterfaceAdapter() { delete impl_; } - - virtual void DescribeTo(::std::ostream* os) const { impl_->DescribeTo(os); } - - virtual void DescribeNegationTo(::std::ostream* os) const { - impl_->DescribeNegationTo(os); - } - - virtual bool MatchAndExplain(const T& x, - MatchResultListener* listener) const { - return impl_->MatchAndExplain(x, listener); - } - - private: - const MatcherInterface<T>* const impl_; - - GTEST_DISALLOW_COPY_AND_ASSIGN_(MatcherInterfaceAdapter); -}; - -} // namespace internal - -// A match result listener that stores the explanation in a string. -class StringMatchResultListener : public MatchResultListener { - public: - StringMatchResultListener() : MatchResultListener(&ss_) {} - - // Returns the explanation accumulated so far. - std::string str() const { return ss_.str(); } - - // Clears the explanation accumulated so far. - void Clear() { ss_.str(""); } - - private: - ::std::stringstream ss_; - - GTEST_DISALLOW_COPY_AND_ASSIGN_(StringMatchResultListener); -}; - -namespace internal { - -struct AnyEq { - template <typename A, typename B> - bool operator()(const A& a, const B& b) const { return a == b; } -}; -struct AnyNe { - template <typename A, typename B> - bool operator()(const A& a, const B& b) const { return a != b; } -}; -struct AnyLt { - template <typename A, typename B> - bool operator()(const A& a, const B& b) const { return a < b; } -}; -struct AnyGt { - template <typename A, typename B> - bool operator()(const A& a, const B& b) const { return a > b; } -}; -struct AnyLe { - template <typename A, typename B> - bool operator()(const A& a, const B& b) const { return a <= b; } -}; -struct AnyGe { - template <typename A, typename B> - bool operator()(const A& a, const B& b) const { return a >= b; } -}; - -// A match result listener that ignores the explanation. -class DummyMatchResultListener : public MatchResultListener { - public: - DummyMatchResultListener() : MatchResultListener(NULL) {} - - private: - GTEST_DISALLOW_COPY_AND_ASSIGN_(DummyMatchResultListener); -}; - -// A match result listener that forwards the explanation to a given -// ostream. The difference between this and MatchResultListener is -// that the former is concrete. -class StreamMatchResultListener : public MatchResultListener { - public: - explicit StreamMatchResultListener(::std::ostream* os) - : MatchResultListener(os) {} - - private: - GTEST_DISALLOW_COPY_AND_ASSIGN_(StreamMatchResultListener); -}; - -// An internal class for implementing Matcher<T>, which will derive -// from it. We put functionalities common to all Matcher<T> -// specializations here to avoid code duplication. -template <typename T> -class MatcherBase { - public: - // Returns true iff the matcher matches x; also explains the match - // result to 'listener'. - bool MatchAndExplain(GTEST_REFERENCE_TO_CONST_(T) x, - MatchResultListener* listener) const { - return impl_->MatchAndExplain(x, listener); - } - - // Returns true iff this matcher matches x. - bool Matches(GTEST_REFERENCE_TO_CONST_(T) x) const { - DummyMatchResultListener dummy; - return MatchAndExplain(x, &dummy); - } - - // Describes this matcher to an ostream. - void DescribeTo(::std::ostream* os) const { impl_->DescribeTo(os); } - - // Describes the negation of this matcher to an ostream. - void DescribeNegationTo(::std::ostream* os) const { - impl_->DescribeNegationTo(os); - } - - // Explains why x matches, or doesn't match, the matcher. - void ExplainMatchResultTo(GTEST_REFERENCE_TO_CONST_(T) x, - ::std::ostream* os) const { - StreamMatchResultListener listener(os); - MatchAndExplain(x, &listener); - } - - // Returns the describer for this matcher object; retains ownership - // of the describer, which is only guaranteed to be alive when - // this matcher object is alive. - const MatcherDescriberInterface* GetDescriber() const { - return impl_.get(); - } - - protected: - MatcherBase() {} - - // Constructs a matcher from its implementation. - explicit MatcherBase( - const MatcherInterface<GTEST_REFERENCE_TO_CONST_(T)>* impl) - : impl_(impl) {} - - template <typename U> - explicit MatcherBase( - const MatcherInterface<U>* impl, - typename internal::EnableIf< - !internal::IsSame<U, GTEST_REFERENCE_TO_CONST_(U)>::value>::type* = - NULL) - : impl_(new internal::MatcherInterfaceAdapter<U>(impl)) {} - - virtual ~MatcherBase() {} - - private: - // shared_ptr (util/gtl/shared_ptr.h) and linked_ptr have similar - // interfaces. The former dynamically allocates a chunk of memory - // to hold the reference count, while the latter tracks all - // references using a circular linked list without allocating - // memory. It has been observed that linked_ptr performs better in - // typical scenarios. However, shared_ptr can out-perform - // linked_ptr when there are many more uses of the copy constructor - // than the default constructor. - // - // If performance becomes a problem, we should see if using - // shared_ptr helps. - ::testing::internal::linked_ptr< - const MatcherInterface<GTEST_REFERENCE_TO_CONST_(T)> > - impl_; -}; - -} // namespace internal - -// A Matcher<T> is a copyable and IMMUTABLE (except by assignment) -// object that can check whether a value of type T matches. The -// implementation of Matcher<T> is just a linked_ptr to const -// MatcherInterface<T>, so copying is fairly cheap. Don't inherit -// from Matcher! -template <typename T> -class Matcher : public internal::MatcherBase<T> { - public: - // Constructs a null matcher. Needed for storing Matcher objects in STL - // containers. A default-constructed matcher is not yet initialized. You - // cannot use it until a valid value has been assigned to it. - explicit Matcher() {} // NOLINT - - // Constructs a matcher from its implementation. - explicit Matcher(const MatcherInterface<GTEST_REFERENCE_TO_CONST_(T)>* impl) - : internal::MatcherBase<T>(impl) {} - - template <typename U> - explicit Matcher(const MatcherInterface<U>* impl, - typename internal::EnableIf<!internal::IsSame< - U, GTEST_REFERENCE_TO_CONST_(U)>::value>::type* = NULL) - : internal::MatcherBase<T>(impl) {} - - // Implicit constructor here allows people to write - // EXPECT_CALL(foo, Bar(5)) instead of EXPECT_CALL(foo, Bar(Eq(5))) sometimes - Matcher(T value); // NOLINT -}; - -// The following two specializations allow the user to write str -// instead of Eq(str) and "foo" instead of Eq("foo") when a std::string -// matcher is expected. -template <> -class GTEST_API_ Matcher<const std::string&> - : public internal::MatcherBase<const std::string&> { - public: - Matcher() {} - - explicit Matcher(const MatcherInterface<const std::string&>* impl) - : internal::MatcherBase<const std::string&>(impl) {} - - // Allows the user to write str instead of Eq(str) sometimes, where - // str is a std::string object. - Matcher(const std::string& s); // NOLINT - -#if GTEST_HAS_GLOBAL_STRING - // Allows the user to write str instead of Eq(str) sometimes, where - // str is a ::string object. - Matcher(const ::string& s); // NOLINT -#endif // GTEST_HAS_GLOBAL_STRING - - // Allows the user to write "foo" instead of Eq("foo") sometimes. - Matcher(const char* s); // NOLINT -}; - -template <> -class GTEST_API_ Matcher<std::string> - : public internal::MatcherBase<std::string> { - public: - Matcher() {} - - explicit Matcher(const MatcherInterface<const std::string&>* impl) - : internal::MatcherBase<std::string>(impl) {} - explicit Matcher(const MatcherInterface<std::string>* impl) - : internal::MatcherBase<std::string>(impl) {} - - // Allows the user to write str instead of Eq(str) sometimes, where - // str is a string object. - Matcher(const std::string& s); // NOLINT - -#if GTEST_HAS_GLOBAL_STRING - // Allows the user to write str instead of Eq(str) sometimes, where - // str is a ::string object. - Matcher(const ::string& s); // NOLINT -#endif // GTEST_HAS_GLOBAL_STRING - - // Allows the user to write "foo" instead of Eq("foo") sometimes. - Matcher(const char* s); // NOLINT -}; - -#if GTEST_HAS_GLOBAL_STRING -// The following two specializations allow the user to write str -// instead of Eq(str) and "foo" instead of Eq("foo") when a ::string -// matcher is expected. -template <> -class GTEST_API_ Matcher<const ::string&> - : public internal::MatcherBase<const ::string&> { - public: - Matcher() {} - - explicit Matcher(const MatcherInterface<const ::string&>* impl) - : internal::MatcherBase<const ::string&>(impl) {} - - // Allows the user to write str instead of Eq(str) sometimes, where - // str is a std::string object. - Matcher(const std::string& s); // NOLINT - - // Allows the user to write str instead of Eq(str) sometimes, where - // str is a ::string object. - Matcher(const ::string& s); // NOLINT - - // Allows the user to write "foo" instead of Eq("foo") sometimes. - Matcher(const char* s); // NOLINT -}; - -template <> -class GTEST_API_ Matcher< ::string> - : public internal::MatcherBase< ::string> { - public: - Matcher() {} - - explicit Matcher(const MatcherInterface<const ::string&>* impl) - : internal::MatcherBase< ::string>(impl) {} - explicit Matcher(const MatcherInterface< ::string>* impl) - : internal::MatcherBase< ::string>(impl) {} - - // Allows the user to write str instead of Eq(str) sometimes, where - // str is a std::string object. - Matcher(const std::string& s); // NOLINT - - // Allows the user to write str instead of Eq(str) sometimes, where - // str is a ::string object. - Matcher(const ::string& s); // NOLINT - - // Allows the user to write "foo" instead of Eq("foo") sometimes. - Matcher(const char* s); // NOLINT -}; -#endif // GTEST_HAS_GLOBAL_STRING - -#if GTEST_HAS_ABSL -// The following two specializations allow the user to write str -// instead of Eq(str) and "foo" instead of Eq("foo") when a absl::string_view -// matcher is expected. -template <> -class GTEST_API_ Matcher<const absl::string_view&> - : public internal::MatcherBase<const absl::string_view&> { - public: - Matcher() {} - - explicit Matcher(const MatcherInterface<const absl::string_view&>* impl) - : internal::MatcherBase<const absl::string_view&>(impl) {} - - // Allows the user to write str instead of Eq(str) sometimes, where - // str is a std::string object. - Matcher(const std::string& s); // NOLINT - -#if GTEST_HAS_GLOBAL_STRING - // Allows the user to write str instead of Eq(str) sometimes, where - // str is a ::string object. - Matcher(const ::string& s); // NOLINT -#endif // GTEST_HAS_GLOBAL_STRING - - // Allows the user to write "foo" instead of Eq("foo") sometimes. - Matcher(const char* s); // NOLINT - - // Allows the user to pass absl::string_views directly. - Matcher(absl::string_view s); // NOLINT -}; - -template <> -class GTEST_API_ Matcher<absl::string_view> - : public internal::MatcherBase<absl::string_view> { - public: - Matcher() {} - - explicit Matcher(const MatcherInterface<const absl::string_view&>* impl) - : internal::MatcherBase<absl::string_view>(impl) {} - explicit Matcher(const MatcherInterface<absl::string_view>* impl) - : internal::MatcherBase<absl::string_view>(impl) {} - - // Allows the user to write str instead of Eq(str) sometimes, where - // str is a std::string object. - Matcher(const std::string& s); // NOLINT - -#if GTEST_HAS_GLOBAL_STRING - // Allows the user to write str instead of Eq(str) sometimes, where - // str is a ::string object. - Matcher(const ::string& s); // NOLINT -#endif // GTEST_HAS_GLOBAL_STRING - - // Allows the user to write "foo" instead of Eq("foo") sometimes. - Matcher(const char* s); // NOLINT - - // Allows the user to pass absl::string_views directly. - Matcher(absl::string_view s); // NOLINT -}; -#endif // GTEST_HAS_ABSL - -// Prints a matcher in a human-readable format. -template <typename T> -std::ostream& operator<<(std::ostream& os, const Matcher<T>& matcher) { - matcher.DescribeTo(&os); - return os; -} - -// The PolymorphicMatcher class template makes it easy to implement a -// polymorphic matcher (i.e. a matcher that can match values of more -// than one type, e.g. Eq(n) and NotNull()). -// -// To define a polymorphic matcher, a user should provide an Impl -// class that has a DescribeTo() method and a DescribeNegationTo() -// method, and define a member function (or member function template) -// -// bool MatchAndExplain(const Value& value, -// MatchResultListener* listener) const; -// -// See the definition of NotNull() for a complete example. -template <class Impl> -class PolymorphicMatcher { - public: - explicit PolymorphicMatcher(const Impl& an_impl) : impl_(an_impl) {} - - // Returns a mutable reference to the underlying matcher - // implementation object. - Impl& mutable_impl() { return impl_; } - - // Returns an immutable reference to the underlying matcher - // implementation object. - const Impl& impl() const { return impl_; } - - template <typename T> - operator Matcher<T>() const { - return Matcher<T>(new MonomorphicImpl<GTEST_REFERENCE_TO_CONST_(T)>(impl_)); - } - - private: - template <typename T> - class MonomorphicImpl : public MatcherInterface<T> { - public: - explicit MonomorphicImpl(const Impl& impl) : impl_(impl) {} - - virtual void DescribeTo(::std::ostream* os) const { - impl_.DescribeTo(os); - } - - virtual void DescribeNegationTo(::std::ostream* os) const { - impl_.DescribeNegationTo(os); - } - - virtual bool MatchAndExplain(T x, MatchResultListener* listener) const { - return impl_.MatchAndExplain(x, listener); - } - - private: - const Impl impl_; - - GTEST_DISALLOW_ASSIGN_(MonomorphicImpl); - }; - - Impl impl_; - - GTEST_DISALLOW_ASSIGN_(PolymorphicMatcher); -}; - -// Creates a matcher from its implementation. This is easier to use -// than the Matcher<T> constructor as it doesn't require you to -// explicitly write the template argument, e.g. -// -// MakeMatcher(foo); -// vs -// Matcher<const string&>(foo); -template <typename T> -inline Matcher<T> MakeMatcher(const MatcherInterface<T>* impl) { - return Matcher<T>(impl); -} - -// Creates a polymorphic matcher from its implementation. This is -// easier to use than the PolymorphicMatcher<Impl> constructor as it -// doesn't require you to explicitly write the template argument, e.g. -// -// MakePolymorphicMatcher(foo); -// vs -// PolymorphicMatcher<TypeOfFoo>(foo); -template <class Impl> -inline PolymorphicMatcher<Impl> MakePolymorphicMatcher(const Impl& impl) { - return PolymorphicMatcher<Impl>(impl); -} - -// Anything inside the 'internal' namespace IS INTERNAL IMPLEMENTATION -// and MUST NOT BE USED IN USER CODE!!! -namespace internal { - -// The MatcherCastImpl class template is a helper for implementing -// MatcherCast(). We need this helper in order to partially -// specialize the implementation of MatcherCast() (C++ allows -// class/struct templates to be partially specialized, but not -// function templates.). - -// This general version is used when MatcherCast()'s argument is a -// polymorphic matcher (i.e. something that can be converted to a -// Matcher but is not one yet; for example, Eq(value)) or a value (for -// example, "hello"). -template <typename T, typename M> -class MatcherCastImpl { - public: - static Matcher<T> Cast(const M& polymorphic_matcher_or_value) { - // M can be a polymorphic matcher, in which case we want to use - // its conversion operator to create Matcher<T>. Or it can be a value - // that should be passed to the Matcher<T>'s constructor. - // - // We can't call Matcher<T>(polymorphic_matcher_or_value) when M is a - // polymorphic matcher because it'll be ambiguous if T has an implicit - // constructor from M (this usually happens when T has an implicit - // constructor from any type). - // - // It won't work to unconditionally implict_cast - // polymorphic_matcher_or_value to Matcher<T> because it won't trigger - // a user-defined conversion from M to T if one exists (assuming M is - // a value). - return CastImpl( - polymorphic_matcher_or_value, - BooleanConstant< - internal::ImplicitlyConvertible<M, Matcher<T> >::value>(), - BooleanConstant< - internal::ImplicitlyConvertible<M, T>::value>()); - } - - private: - template <bool Ignore> - static Matcher<T> CastImpl(const M& polymorphic_matcher_or_value, - BooleanConstant<true> /* convertible_to_matcher */, - BooleanConstant<Ignore>) { - // M is implicitly convertible to Matcher<T>, which means that either - // M is a polymorphic matcher or Matcher<T> has an implicit constructor - // from M. In both cases using the implicit conversion will produce a - // matcher. - // - // Even if T has an implicit constructor from M, it won't be called because - // creating Matcher<T> would require a chain of two user-defined conversions - // (first to create T from M and then to create Matcher<T> from T). - return polymorphic_matcher_or_value; - } - - // M can't be implicitly converted to Matcher<T>, so M isn't a polymorphic - // matcher. It's a value of a type implicitly convertible to T. Use direct - // initialization to create a matcher. - static Matcher<T> CastImpl( - const M& value, BooleanConstant<false> /* convertible_to_matcher */, - BooleanConstant<true> /* convertible_to_T */) { - return Matcher<T>(ImplicitCast_<T>(value)); - } - - // M can't be implicitly converted to either Matcher<T> or T. Attempt to use - // polymorphic matcher Eq(value) in this case. - // - // Note that we first attempt to perform an implicit cast on the value and - // only fall back to the polymorphic Eq() matcher afterwards because the - // latter calls bool operator==(const Lhs& lhs, const Rhs& rhs) in the end - // which might be undefined even when Rhs is implicitly convertible to Lhs - // (e.g. std::pair<const int, int> vs. std::pair<int, int>). - // - // We don't define this method inline as we need the declaration of Eq(). - static Matcher<T> CastImpl( - const M& value, BooleanConstant<false> /* convertible_to_matcher */, - BooleanConstant<false> /* convertible_to_T */); -}; - -// This more specialized version is used when MatcherCast()'s argument -// is already a Matcher. This only compiles when type T can be -// statically converted to type U. -template <typename T, typename U> -class MatcherCastImpl<T, Matcher<U> > { - public: - static Matcher<T> Cast(const Matcher<U>& source_matcher) { - return Matcher<T>(new Impl(source_matcher)); - } - - private: - class Impl : public MatcherInterface<T> { - public: - explicit Impl(const Matcher<U>& source_matcher) - : source_matcher_(source_matcher) {} - - // We delegate the matching logic to the source matcher. - virtual bool MatchAndExplain(T x, MatchResultListener* listener) const { -#if GTEST_LANG_CXX11 - using FromType = typename std::remove_cv<typename std::remove_pointer< - typename std::remove_reference<T>::type>::type>::type; - using ToType = typename std::remove_cv<typename std::remove_pointer< - typename std::remove_reference<U>::type>::type>::type; - // Do not allow implicitly converting base*/& to derived*/&. - static_assert( - // Do not trigger if only one of them is a pointer. That implies a - // regular conversion and not a down_cast. - (std::is_pointer<typename std::remove_reference<T>::type>::value != - std::is_pointer<typename std::remove_reference<U>::type>::value) || - std::is_same<FromType, ToType>::value || - !std::is_base_of<FromType, ToType>::value, - "Can't implicitly convert from <base> to <derived>"); -#endif // GTEST_LANG_CXX11 - - return source_matcher_.MatchAndExplain(static_cast<U>(x), listener); - } - - virtual void DescribeTo(::std::ostream* os) const { - source_matcher_.DescribeTo(os); - } - - virtual void DescribeNegationTo(::std::ostream* os) const { - source_matcher_.DescribeNegationTo(os); - } - - private: - const Matcher<U> source_matcher_; - - GTEST_DISALLOW_ASSIGN_(Impl); - }; -}; - -// This even more specialized version is used for efficiently casting -// a matcher to its own type. -template <typename T> -class MatcherCastImpl<T, Matcher<T> > { - public: - static Matcher<T> Cast(const Matcher<T>& matcher) { return matcher; } -}; - -} // namespace internal - -// In order to be safe and clear, casting between different matcher -// types is done explicitly via MatcherCast<T>(m), which takes a -// matcher m and returns a Matcher<T>. It compiles only when T can be -// statically converted to the argument type of m. -template <typename T, typename M> -inline Matcher<T> MatcherCast(const M& matcher) { - return internal::MatcherCastImpl<T, M>::Cast(matcher); -} - -// Implements SafeMatcherCast(). -// -// We use an intermediate class to do the actual safe casting as Nokia's -// Symbian compiler cannot decide between -// template <T, M> ... (M) and -// template <T, U> ... (const Matcher<U>&) -// for function templates but can for member function templates. -template <typename T> -class SafeMatcherCastImpl { - public: - // This overload handles polymorphic matchers and values only since - // monomorphic matchers are handled by the next one. - template <typename M> - static inline Matcher<T> Cast(const M& polymorphic_matcher_or_value) { - return internal::MatcherCastImpl<T, M>::Cast(polymorphic_matcher_or_value); - } - - // This overload handles monomorphic matchers. - // - // In general, if type T can be implicitly converted to type U, we can - // safely convert a Matcher<U> to a Matcher<T> (i.e. Matcher is - // contravariant): just keep a copy of the original Matcher<U>, convert the - // argument from type T to U, and then pass it to the underlying Matcher<U>. - // The only exception is when U is a reference and T is not, as the - // underlying Matcher<U> may be interested in the argument's address, which - // is not preserved in the conversion from T to U. - template <typename U> - static inline Matcher<T> Cast(const Matcher<U>& matcher) { - // Enforce that T can be implicitly converted to U. - GTEST_COMPILE_ASSERT_((internal::ImplicitlyConvertible<T, U>::value), - T_must_be_implicitly_convertible_to_U); - // Enforce that we are not converting a non-reference type T to a reference - // type U. - GTEST_COMPILE_ASSERT_( - internal::is_reference<T>::value || !internal::is_reference<U>::value, - cannot_convert_non_reference_arg_to_reference); - // In case both T and U are arithmetic types, enforce that the - // conversion is not lossy. - typedef GTEST_REMOVE_REFERENCE_AND_CONST_(T) RawT; - typedef GTEST_REMOVE_REFERENCE_AND_CONST_(U) RawU; - const bool kTIsOther = GMOCK_KIND_OF_(RawT) == internal::kOther; - const bool kUIsOther = GMOCK_KIND_OF_(RawU) == internal::kOther; - GTEST_COMPILE_ASSERT_( - kTIsOther || kUIsOther || - (internal::LosslessArithmeticConvertible<RawT, RawU>::value), - conversion_of_arithmetic_types_must_be_lossless); - return MatcherCast<T>(matcher); - } -}; - -template <typename T, typename M> -inline Matcher<T> SafeMatcherCast(const M& polymorphic_matcher) { - return SafeMatcherCastImpl<T>::Cast(polymorphic_matcher); -} - -// A<T>() returns a matcher that matches any value of type T. -template <typename T> -Matcher<T> A(); - -// Anything inside the 'internal' namespace IS INTERNAL IMPLEMENTATION -// and MUST NOT BE USED IN USER CODE!!! -namespace internal { - -// If the explanation is not empty, prints it to the ostream. -inline void PrintIfNotEmpty(const std::string& explanation, - ::std::ostream* os) { - if (explanation != "" && os != NULL) { - *os << ", " << explanation; - } -} - -// Returns true if the given type name is easy to read by a human. -// This is used to decide whether printing the type of a value might -// be helpful. -inline bool IsReadableTypeName(const std::string& type_name) { - // We consider a type name readable if it's short or doesn't contain - // a template or function type. - return (type_name.length() <= 20 || - type_name.find_first_of("<(") == std::string::npos); -} - -// Matches the value against the given matcher, prints the value and explains -// the match result to the listener. Returns the match result. -// 'listener' must not be NULL. -// Value cannot be passed by const reference, because some matchers take a -// non-const argument. -template <typename Value, typename T> -bool MatchPrintAndExplain(Value& value, const Matcher<T>& matcher, - MatchResultListener* listener) { - if (!listener->IsInterested()) { - // If the listener is not interested, we do not need to construct the - // inner explanation. - return matcher.Matches(value); - } - - StringMatchResultListener inner_listener; - const bool match = matcher.MatchAndExplain(value, &inner_listener); - - UniversalPrint(value, listener->stream()); -#if GTEST_HAS_RTTI - const std::string& type_name = GetTypeName<Value>(); - if (IsReadableTypeName(type_name)) - *listener->stream() << " (of type " << type_name << ")"; -#endif - PrintIfNotEmpty(inner_listener.str(), listener->stream()); - - return match; -} - -// An internal helper class for doing compile-time loop on a tuple's -// fields. -template <size_t N> -class TuplePrefix { - public: - // TuplePrefix<N>::Matches(matcher_tuple, value_tuple) returns true - // iff the first N fields of matcher_tuple matches the first N - // fields of value_tuple, respectively. - template <typename MatcherTuple, typename ValueTuple> - static bool Matches(const MatcherTuple& matcher_tuple, - const ValueTuple& value_tuple) { - return TuplePrefix<N - 1>::Matches(matcher_tuple, value_tuple) - && get<N - 1>(matcher_tuple).Matches(get<N - 1>(value_tuple)); - } - - // TuplePrefix<N>::ExplainMatchFailuresTo(matchers, values, os) - // describes failures in matching the first N fields of matchers - // against the first N fields of values. If there is no failure, - // nothing will be streamed to os. - template <typename MatcherTuple, typename ValueTuple> - static void ExplainMatchFailuresTo(const MatcherTuple& matchers, - const ValueTuple& values, - ::std::ostream* os) { - // First, describes failures in the first N - 1 fields. - TuplePrefix<N - 1>::ExplainMatchFailuresTo(matchers, values, os); - - // Then describes the failure (if any) in the (N - 1)-th (0-based) - // field. - typename tuple_element<N - 1, MatcherTuple>::type matcher = - get<N - 1>(matchers); - typedef typename tuple_element<N - 1, ValueTuple>::type Value; - GTEST_REFERENCE_TO_CONST_(Value) value = get<N - 1>(values); - StringMatchResultListener listener; - if (!matcher.MatchAndExplain(value, &listener)) { - // TODO(wan): include in the message the name of the parameter - // as used in MOCK_METHOD*() when possible. - *os << " Expected arg #" << N - 1 << ": "; - get<N - 1>(matchers).DescribeTo(os); - *os << "\n Actual: "; - // We remove the reference in type Value to prevent the - // universal printer from printing the address of value, which - // isn't interesting to the user most of the time. The - // matcher's MatchAndExplain() method handles the case when - // the address is interesting. - internal::UniversalPrint(value, os); - PrintIfNotEmpty(listener.str(), os); - *os << "\n"; - } - } -}; - -// The base case. -template <> -class TuplePrefix<0> { - public: - template <typename MatcherTuple, typename ValueTuple> - static bool Matches(const MatcherTuple& /* matcher_tuple */, - const ValueTuple& /* value_tuple */) { - return true; - } - - template <typename MatcherTuple, typename ValueTuple> - static void ExplainMatchFailuresTo(const MatcherTuple& /* matchers */, - const ValueTuple& /* values */, - ::std::ostream* /* os */) {} -}; - -// TupleMatches(matcher_tuple, value_tuple) returns true iff all -// matchers in matcher_tuple match the corresponding fields in -// value_tuple. It is a compiler error if matcher_tuple and -// value_tuple have different number of fields or incompatible field -// types. -template <typename MatcherTuple, typename ValueTuple> -bool TupleMatches(const MatcherTuple& matcher_tuple, - const ValueTuple& value_tuple) { - // Makes sure that matcher_tuple and value_tuple have the same - // number of fields. - GTEST_COMPILE_ASSERT_(tuple_size<MatcherTuple>::value == - tuple_size<ValueTuple>::value, - matcher_and_value_have_different_numbers_of_fields); - return TuplePrefix<tuple_size<ValueTuple>::value>:: - Matches(matcher_tuple, value_tuple); -} - -// Describes failures in matching matchers against values. If there -// is no failure, nothing will be streamed to os. -template <typename MatcherTuple, typename ValueTuple> -void ExplainMatchFailureTupleTo(const MatcherTuple& matchers, - const ValueTuple& values, - ::std::ostream* os) { - TuplePrefix<tuple_size<MatcherTuple>::value>::ExplainMatchFailuresTo( - matchers, values, os); -} - -// TransformTupleValues and its helper. -// -// TransformTupleValuesHelper hides the internal machinery that -// TransformTupleValues uses to implement a tuple traversal. -template <typename Tuple, typename Func, typename OutIter> -class TransformTupleValuesHelper { - private: - typedef ::testing::tuple_size<Tuple> TupleSize; - - public: - // For each member of tuple 't', taken in order, evaluates '*out++ = f(t)'. - // Returns the final value of 'out' in case the caller needs it. - static OutIter Run(Func f, const Tuple& t, OutIter out) { - return IterateOverTuple<Tuple, TupleSize::value>()(f, t, out); - } - - private: - template <typename Tup, size_t kRemainingSize> - struct IterateOverTuple { - OutIter operator() (Func f, const Tup& t, OutIter out) const { - *out++ = f(::testing::get<TupleSize::value - kRemainingSize>(t)); - return IterateOverTuple<Tup, kRemainingSize - 1>()(f, t, out); - } - }; - template <typename Tup> - struct IterateOverTuple<Tup, 0> { - OutIter operator() (Func /* f */, const Tup& /* t */, OutIter out) const { - return out; - } - }; -}; - -// Successively invokes 'f(element)' on each element of the tuple 't', -// appending each result to the 'out' iterator. Returns the final value -// of 'out'. -template <typename Tuple, typename Func, typename OutIter> -OutIter TransformTupleValues(Func f, const Tuple& t, OutIter out) { - return TransformTupleValuesHelper<Tuple, Func, OutIter>::Run(f, t, out); -} - -// Implements A<T>(). -template <typename T> -class AnyMatcherImpl : public MatcherInterface<GTEST_REFERENCE_TO_CONST_(T)> { - public: - virtual bool MatchAndExplain(GTEST_REFERENCE_TO_CONST_(T) /* x */, - MatchResultListener* /* listener */) const { - return true; - } - virtual void DescribeTo(::std::ostream* os) const { *os << "is anything"; } - virtual void DescribeNegationTo(::std::ostream* os) const { - // This is mostly for completeness' safe, as it's not very useful - // to write Not(A<bool>()). However we cannot completely rule out - // such a possibility, and it doesn't hurt to be prepared. - *os << "never matches"; - } -}; - -// Implements _, a matcher that matches any value of any -// type. This is a polymorphic matcher, so we need a template type -// conversion operator to make it appearing as a Matcher<T> for any -// type T. -class AnythingMatcher { - public: - template <typename T> - operator Matcher<T>() const { return A<T>(); } -}; - -// Implements a matcher that compares a given value with a -// pre-supplied value using one of the ==, <=, <, etc, operators. The -// two values being compared don't have to have the same type. -// -// The matcher defined here is polymorphic (for example, Eq(5) can be -// used to match an int, a short, a double, etc). Therefore we use -// a template type conversion operator in the implementation. -// -// The following template definition assumes that the Rhs parameter is -// a "bare" type (i.e. neither 'const T' nor 'T&'). -template <typename D, typename Rhs, typename Op> -class ComparisonBase { - public: - explicit ComparisonBase(const Rhs& rhs) : rhs_(rhs) {} - template <typename Lhs> - operator Matcher<Lhs>() const { - return MakeMatcher(new Impl<Lhs>(rhs_)); - } - - private: - template <typename Lhs> - class Impl : public MatcherInterface<Lhs> { - public: - explicit Impl(const Rhs& rhs) : rhs_(rhs) {} - virtual bool MatchAndExplain( - Lhs lhs, MatchResultListener* /* listener */) const { - return Op()(lhs, rhs_); - } - virtual void DescribeTo(::std::ostream* os) const { - *os << D::Desc() << " "; - UniversalPrint(rhs_, os); - } - virtual void DescribeNegationTo(::std::ostream* os) const { - *os << D::NegatedDesc() << " "; - UniversalPrint(rhs_, os); - } - private: - Rhs rhs_; - GTEST_DISALLOW_ASSIGN_(Impl); - }; - Rhs rhs_; - GTEST_DISALLOW_ASSIGN_(ComparisonBase); -}; - -template <typename Rhs> -class EqMatcher : public ComparisonBase<EqMatcher<Rhs>, Rhs, AnyEq> { - public: - explicit EqMatcher(const Rhs& rhs) - : ComparisonBase<EqMatcher<Rhs>, Rhs, AnyEq>(rhs) { } - static const char* Desc() { return "is equal to"; } - static const char* NegatedDesc() { return "isn't equal to"; } -}; -template <typename Rhs> -class NeMatcher : public ComparisonBase<NeMatcher<Rhs>, Rhs, AnyNe> { - public: - explicit NeMatcher(const Rhs& rhs) - : ComparisonBase<NeMatcher<Rhs>, Rhs, AnyNe>(rhs) { } - static const char* Desc() { return "isn't equal to"; } - static const char* NegatedDesc() { return "is equal to"; } -}; -template <typename Rhs> -class LtMatcher : public ComparisonBase<LtMatcher<Rhs>, Rhs, AnyLt> { - public: - explicit LtMatcher(const Rhs& rhs) - : ComparisonBase<LtMatcher<Rhs>, Rhs, AnyLt>(rhs) { } - static const char* Desc() { return "is <"; } - static const char* NegatedDesc() { return "isn't <"; } -}; -template <typename Rhs> -class GtMatcher : public ComparisonBase<GtMatcher<Rhs>, Rhs, AnyGt> { - public: - explicit GtMatcher(const Rhs& rhs) - : ComparisonBase<GtMatcher<Rhs>, Rhs, AnyGt>(rhs) { } - static const char* Desc() { return "is >"; } - static const char* NegatedDesc() { return "isn't >"; } -}; -template <typename Rhs> -class LeMatcher : public ComparisonBase<LeMatcher<Rhs>, Rhs, AnyLe> { - public: - explicit LeMatcher(const Rhs& rhs) - : ComparisonBase<LeMatcher<Rhs>, Rhs, AnyLe>(rhs) { } - static const char* Desc() { return "is <="; } - static const char* NegatedDesc() { return "isn't <="; } -}; -template <typename Rhs> -class GeMatcher : public ComparisonBase<GeMatcher<Rhs>, Rhs, AnyGe> { - public: - explicit GeMatcher(const Rhs& rhs) - : ComparisonBase<GeMatcher<Rhs>, Rhs, AnyGe>(rhs) { } - static const char* Desc() { return "is >="; } - static const char* NegatedDesc() { return "isn't >="; } -}; - -// Implements the polymorphic IsNull() matcher, which matches any raw or smart -// pointer that is NULL. -class IsNullMatcher { - public: - template <typename Pointer> - bool MatchAndExplain(const Pointer& p, - MatchResultListener* /* listener */) const { -#if GTEST_LANG_CXX11 - return p == nullptr; -#else // GTEST_LANG_CXX11 - return GetRawPointer(p) == NULL; -#endif // GTEST_LANG_CXX11 - } - - void DescribeTo(::std::ostream* os) const { *os << "is NULL"; } - void DescribeNegationTo(::std::ostream* os) const { - *os << "isn't NULL"; - } -}; - -// Implements the polymorphic NotNull() matcher, which matches any raw or smart -// pointer that is not NULL. -class NotNullMatcher { - public: - template <typename Pointer> - bool MatchAndExplain(const Pointer& p, - MatchResultListener* /* listener */) const { -#if GTEST_LANG_CXX11 - return p != nullptr; -#else // GTEST_LANG_CXX11 - return GetRawPointer(p) != NULL; -#endif // GTEST_LANG_CXX11 - } - - void DescribeTo(::std::ostream* os) const { *os << "isn't NULL"; } - void DescribeNegationTo(::std::ostream* os) const { - *os << "is NULL"; - } -}; - -// Ref(variable) matches any argument that is a reference to -// 'variable'. This matcher is polymorphic as it can match any -// super type of the type of 'variable'. -// -// The RefMatcher template class implements Ref(variable). It can -// only be instantiated with a reference type. This prevents a user -// from mistakenly using Ref(x) to match a non-reference function -// argument. For example, the following will righteously cause a -// compiler error: -// -// int n; -// Matcher<int> m1 = Ref(n); // This won't compile. -// Matcher<int&> m2 = Ref(n); // This will compile. -template <typename T> -class RefMatcher; - -template <typename T> -class RefMatcher<T&> { - // Google Mock is a generic framework and thus needs to support - // mocking any function types, including those that take non-const - // reference arguments. Therefore the template parameter T (and - // Super below) can be instantiated to either a const type or a - // non-const type. - public: - // RefMatcher() takes a T& instead of const T&, as we want the - // compiler to catch using Ref(const_value) as a matcher for a - // non-const reference. - explicit RefMatcher(T& x) : object_(x) {} // NOLINT - - template <typename Super> - operator Matcher<Super&>() const { - // By passing object_ (type T&) to Impl(), which expects a Super&, - // we make sure that Super is a super type of T. In particular, - // this catches using Ref(const_value) as a matcher for a - // non-const reference, as you cannot implicitly convert a const - // reference to a non-const reference. - return MakeMatcher(new Impl<Super>(object_)); - } - - private: - template <typename Super> - class Impl : public MatcherInterface<Super&> { - public: - explicit Impl(Super& x) : object_(x) {} // NOLINT - - // MatchAndExplain() takes a Super& (as opposed to const Super&) - // in order to match the interface MatcherInterface<Super&>. - virtual bool MatchAndExplain( - Super& x, MatchResultListener* listener) const { - *listener << "which is located @" << static_cast<const void*>(&x); - return &x == &object_; - } - - virtual void DescribeTo(::std::ostream* os) const { - *os << "references the variable "; - UniversalPrinter<Super&>::Print(object_, os); - } - - virtual void DescribeNegationTo(::std::ostream* os) const { - *os << "does not reference the variable "; - UniversalPrinter<Super&>::Print(object_, os); - } - - private: - const Super& object_; - - GTEST_DISALLOW_ASSIGN_(Impl); - }; - - T& object_; - - GTEST_DISALLOW_ASSIGN_(RefMatcher); -}; - -// Polymorphic helper functions for narrow and wide string matchers. -inline bool CaseInsensitiveCStringEquals(const char* lhs, const char* rhs) { - return String::CaseInsensitiveCStringEquals(lhs, rhs); -} - -inline bool CaseInsensitiveCStringEquals(const wchar_t* lhs, - const wchar_t* rhs) { - return String::CaseInsensitiveWideCStringEquals(lhs, rhs); -} - -// String comparison for narrow or wide strings that can have embedded NUL -// characters. -template <typename StringType> -bool CaseInsensitiveStringEquals(const StringType& s1, - const StringType& s2) { - // Are the heads equal? - if (!CaseInsensitiveCStringEquals(s1.c_str(), s2.c_str())) { - return false; - } - - // Skip the equal heads. - const typename StringType::value_type nul = 0; - const size_t i1 = s1.find(nul), i2 = s2.find(nul); - - // Are we at the end of either s1 or s2? - if (i1 == StringType::npos || i2 == StringType::npos) { - return i1 == i2; - } - - // Are the tails equal? - return CaseInsensitiveStringEquals(s1.substr(i1 + 1), s2.substr(i2 + 1)); -} - -// String matchers. - -// Implements equality-based string matchers like StrEq, StrCaseNe, and etc. -template <typename StringType> -class StrEqualityMatcher { - public: - StrEqualityMatcher(const StringType& str, bool expect_eq, - bool case_sensitive) - : string_(str), expect_eq_(expect_eq), case_sensitive_(case_sensitive) {} - -#if GTEST_HAS_ABSL - bool MatchAndExplain(const absl::string_view& s, - MatchResultListener* listener) const { - if (s.data() == NULL) { - return !expect_eq_; - } - // This should fail to compile if absl::string_view is used with wide - // strings. - const StringType& str = string(s); - return MatchAndExplain(str, listener); - } -#endif // GTEST_HAS_ABSL - - // Accepts pointer types, particularly: - // const char* - // char* - // const wchar_t* - // wchar_t* - template <typename CharType> - bool MatchAndExplain(CharType* s, MatchResultListener* listener) const { - if (s == NULL) { - return !expect_eq_; - } - return MatchAndExplain(StringType(s), listener); - } - - // Matches anything that can convert to StringType. - // - // This is a template, not just a plain function with const StringType&, - // because absl::string_view has some interfering non-explicit constructors. - template <typename MatcheeStringType> - bool MatchAndExplain(const MatcheeStringType& s, - MatchResultListener* /* listener */) const { - const StringType& s2(s); - const bool eq = case_sensitive_ ? s2 == string_ : - CaseInsensitiveStringEquals(s2, string_); - return expect_eq_ == eq; - } - - void DescribeTo(::std::ostream* os) const { - DescribeToHelper(expect_eq_, os); - } - - void DescribeNegationTo(::std::ostream* os) const { - DescribeToHelper(!expect_eq_, os); - } - - private: - void DescribeToHelper(bool expect_eq, ::std::ostream* os) const { - *os << (expect_eq ? "is " : "isn't "); - *os << "equal to "; - if (!case_sensitive_) { - *os << "(ignoring case) "; - } - UniversalPrint(string_, os); - } - - const StringType string_; - const bool expect_eq_; - const bool case_sensitive_; - - GTEST_DISALLOW_ASSIGN_(StrEqualityMatcher); -}; - -// Implements the polymorphic HasSubstr(substring) matcher, which -// can be used as a Matcher<T> as long as T can be converted to a -// string. -template <typename StringType> -class HasSubstrMatcher { - public: - explicit HasSubstrMatcher(const StringType& substring) - : substring_(substring) {} - -#if GTEST_HAS_ABSL - bool MatchAndExplain(const absl::string_view& s, - MatchResultListener* listener) const { - if (s.data() == NULL) { - return false; - } - // This should fail to compile if absl::string_view is used with wide - // strings. - const StringType& str = string(s); - return MatchAndExplain(str, listener); - } -#endif // GTEST_HAS_ABSL - - // Accepts pointer types, particularly: - // const char* - // char* - // const wchar_t* - // wchar_t* - template <typename CharType> - bool MatchAndExplain(CharType* s, MatchResultListener* listener) const { - return s != NULL && MatchAndExplain(StringType(s), listener); - } - - // Matches anything that can convert to StringType. - // - // This is a template, not just a plain function with const StringType&, - // because absl::string_view has some interfering non-explicit constructors. - template <typename MatcheeStringType> - bool MatchAndExplain(const MatcheeStringType& s, - MatchResultListener* /* listener */) const { - const StringType& s2(s); - return s2.find(substring_) != StringType::npos; - } - - // Describes what this matcher matches. - void DescribeTo(::std::ostream* os) const { - *os << "has substring "; - UniversalPrint(substring_, os); - } - - void DescribeNegationTo(::std::ostream* os) const { - *os << "has no substring "; - UniversalPrint(substring_, os); - } - - private: - const StringType substring_; - - GTEST_DISALLOW_ASSIGN_(HasSubstrMatcher); -}; - -// Implements the polymorphic StartsWith(substring) matcher, which -// can be used as a Matcher<T> as long as T can be converted to a -// string. -template <typename StringType> -class StartsWithMatcher { - public: - explicit StartsWithMatcher(const StringType& prefix) : prefix_(prefix) { - } - -#if GTEST_HAS_ABSL - bool MatchAndExplain(const absl::string_view& s, - MatchResultListener* listener) const { - if (s.data() == NULL) { - return false; - } - // This should fail to compile if absl::string_view is used with wide - // strings. - const StringType& str = string(s); - return MatchAndExplain(str, listener); - } -#endif // GTEST_HAS_ABSL - - // Accepts pointer types, particularly: - // const char* - // char* - // const wchar_t* - // wchar_t* - template <typename CharType> - bool MatchAndExplain(CharType* s, MatchResultListener* listener) const { - return s != NULL && MatchAndExplain(StringType(s), listener); - } - - // Matches anything that can convert to StringType. - // - // This is a template, not just a plain function with const StringType&, - // because absl::string_view has some interfering non-explicit constructors. - template <typename MatcheeStringType> - bool MatchAndExplain(const MatcheeStringType& s, - MatchResultListener* /* listener */) const { - const StringType& s2(s); - return s2.length() >= prefix_.length() && - s2.substr(0, prefix_.length()) == prefix_; - } - - void DescribeTo(::std::ostream* os) const { - *os << "starts with "; - UniversalPrint(prefix_, os); - } - - void DescribeNegationTo(::std::ostream* os) const { - *os << "doesn't start with "; - UniversalPrint(prefix_, os); - } - - private: - const StringType prefix_; - - GTEST_DISALLOW_ASSIGN_(StartsWithMatcher); -}; - -// Implements the polymorphic EndsWith(substring) matcher, which -// can be used as a Matcher<T> as long as T can be converted to a -// string. -template <typename StringType> -class EndsWithMatcher { - public: - explicit EndsWithMatcher(const StringType& suffix) : suffix_(suffix) {} - -#if GTEST_HAS_ABSL - bool MatchAndExplain(const absl::string_view& s, - MatchResultListener* listener) const { - if (s.data() == NULL) { - return false; - } - // This should fail to compile if absl::string_view is used with wide - // strings. - const StringType& str = string(s); - return MatchAndExplain(str, listener); - } -#endif // GTEST_HAS_ABSL - - // Accepts pointer types, particularly: - // const char* - // char* - // const wchar_t* - // wchar_t* - template <typename CharType> - bool MatchAndExplain(CharType* s, MatchResultListener* listener) const { - return s != NULL && MatchAndExplain(StringType(s), listener); - } - - // Matches anything that can convert to StringType. - // - // This is a template, not just a plain function with const StringType&, - // because absl::string_view has some interfering non-explicit constructors. - template <typename MatcheeStringType> - bool MatchAndExplain(const MatcheeStringType& s, - MatchResultListener* /* listener */) const { - const StringType& s2(s); - return s2.length() >= suffix_.length() && - s2.substr(s2.length() - suffix_.length()) == suffix_; - } - - void DescribeTo(::std::ostream* os) const { - *os << "ends with "; - UniversalPrint(suffix_, os); - } - - void DescribeNegationTo(::std::ostream* os) const { - *os << "doesn't end with "; - UniversalPrint(suffix_, os); - } - - private: - const StringType suffix_; - - GTEST_DISALLOW_ASSIGN_(EndsWithMatcher); -}; - -// Implements polymorphic matchers MatchesRegex(regex) and -// ContainsRegex(regex), which can be used as a Matcher<T> as long as -// T can be converted to a string. -class MatchesRegexMatcher { - public: - MatchesRegexMatcher(const RE* regex, bool full_match) - : regex_(regex), full_match_(full_match) {} - -#if GTEST_HAS_ABSL - bool MatchAndExplain(const absl::string_view& s, - MatchResultListener* listener) const { - return s.data() && MatchAndExplain(string(s), listener); - } -#endif // GTEST_HAS_ABSL - - // Accepts pointer types, particularly: - // const char* - // char* - // const wchar_t* - // wchar_t* - template <typename CharType> - bool MatchAndExplain(CharType* s, MatchResultListener* listener) const { - return s != NULL && MatchAndExplain(std::string(s), listener); - } - - // Matches anything that can convert to std::string. - // - // This is a template, not just a plain function with const std::string&, - // because absl::string_view has some interfering non-explicit constructors. - template <class MatcheeStringType> - bool MatchAndExplain(const MatcheeStringType& s, - MatchResultListener* /* listener */) const { - const std::string& s2(s); - return full_match_ ? RE::FullMatch(s2, *regex_) : - RE::PartialMatch(s2, *regex_); - } - - void DescribeTo(::std::ostream* os) const { - *os << (full_match_ ? "matches" : "contains") - << " regular expression "; - UniversalPrinter<std::string>::Print(regex_->pattern(), os); - } - - void DescribeNegationTo(::std::ostream* os) const { - *os << "doesn't " << (full_match_ ? "match" : "contain") - << " regular expression "; - UniversalPrinter<std::string>::Print(regex_->pattern(), os); - } - - private: - const internal::linked_ptr<const RE> regex_; - const bool full_match_; - - GTEST_DISALLOW_ASSIGN_(MatchesRegexMatcher); -}; - -// Implements a matcher that compares the two fields of a 2-tuple -// using one of the ==, <=, <, etc, operators. The two fields being -// compared don't have to have the same type. -// -// The matcher defined here is polymorphic (for example, Eq() can be -// used to match a tuple<int, short>, a tuple<const long&, double>, -// etc). Therefore we use a template type conversion operator in the -// implementation. -template <typename D, typename Op> -class PairMatchBase { - public: - template <typename T1, typename T2> - operator Matcher< ::testing::tuple<T1, T2> >() const { - return MakeMatcher(new Impl< ::testing::tuple<T1, T2> >); - } - template <typename T1, typename T2> - operator Matcher<const ::testing::tuple<T1, T2>&>() const { - return MakeMatcher(new Impl<const ::testing::tuple<T1, T2>&>); - } - - private: - static ::std::ostream& GetDesc(::std::ostream& os) { // NOLINT - return os << D::Desc(); - } - - template <typename Tuple> - class Impl : public MatcherInterface<Tuple> { - public: - virtual bool MatchAndExplain( - Tuple args, - MatchResultListener* /* listener */) const { - return Op()(::testing::get<0>(args), ::testing::get<1>(args)); - } - virtual void DescribeTo(::std::ostream* os) const { - *os << "are " << GetDesc; - } - virtual void DescribeNegationTo(::std::ostream* os) const { - *os << "aren't " << GetDesc; - } - }; -}; - -class Eq2Matcher : public PairMatchBase<Eq2Matcher, AnyEq> { - public: - static const char* Desc() { return "an equal pair"; } -}; -class Ne2Matcher : public PairMatchBase<Ne2Matcher, AnyNe> { - public: - static const char* Desc() { return "an unequal pair"; } -}; -class Lt2Matcher : public PairMatchBase<Lt2Matcher, AnyLt> { - public: - static const char* Desc() { return "a pair where the first < the second"; } -}; -class Gt2Matcher : public PairMatchBase<Gt2Matcher, AnyGt> { - public: - static const char* Desc() { return "a pair where the first > the second"; } -}; -class Le2Matcher : public PairMatchBase<Le2Matcher, AnyLe> { - public: - static const char* Desc() { return "a pair where the first <= the second"; } -}; -class Ge2Matcher : public PairMatchBase<Ge2Matcher, AnyGe> { - public: - static const char* Desc() { return "a pair where the first >= the second"; } -}; - -// Implements the Not(...) matcher for a particular argument type T. -// We do not nest it inside the NotMatcher class template, as that -// will prevent different instantiations of NotMatcher from sharing -// the same NotMatcherImpl<T> class. -template <typename T> -class NotMatcherImpl : public MatcherInterface<GTEST_REFERENCE_TO_CONST_(T)> { - public: - explicit NotMatcherImpl(const Matcher<T>& matcher) - : matcher_(matcher) {} - - virtual bool MatchAndExplain(GTEST_REFERENCE_TO_CONST_(T) x, - MatchResultListener* listener) const { - return !matcher_.MatchAndExplain(x, listener); - } - - virtual void DescribeTo(::std::ostream* os) const { - matcher_.DescribeNegationTo(os); - } - - virtual void DescribeNegationTo(::std::ostream* os) const { - matcher_.DescribeTo(os); - } - - private: - const Matcher<T> matcher_; - - GTEST_DISALLOW_ASSIGN_(NotMatcherImpl); -}; - -// Implements the Not(m) matcher, which matches a value that doesn't -// match matcher m. -template <typename InnerMatcher> -class NotMatcher { - public: - explicit NotMatcher(InnerMatcher matcher) : matcher_(matcher) {} - - // This template type conversion operator allows Not(m) to be used - // to match any type m can match. - template <typename T> - operator Matcher<T>() const { - return Matcher<T>(new NotMatcherImpl<T>(SafeMatcherCast<T>(matcher_))); - } - - private: - InnerMatcher matcher_; - - GTEST_DISALLOW_ASSIGN_(NotMatcher); -}; - -// Implements the AllOf(m1, m2) matcher for a particular argument type -// T. We do not nest it inside the BothOfMatcher class template, as -// that will prevent different instantiations of BothOfMatcher from -// sharing the same BothOfMatcherImpl<T> class. -template <typename T> -class AllOfMatcherImpl - : public MatcherInterface<GTEST_REFERENCE_TO_CONST_(T)> { - public: - explicit AllOfMatcherImpl(std::vector<Matcher<T> > matchers) - : matchers_(internal::move(matchers)) {} - - virtual void DescribeTo(::std::ostream* os) const { - *os << "("; - for (size_t i = 0; i < matchers_.size(); ++i) { - if (i != 0) *os << ") and ("; - matchers_[i].DescribeTo(os); - } - *os << ")"; - } - - virtual void DescribeNegationTo(::std::ostream* os) const { - *os << "("; - for (size_t i = 0; i < matchers_.size(); ++i) { - if (i != 0) *os << ") or ("; - matchers_[i].DescribeNegationTo(os); - } - *os << ")"; - } - - virtual bool MatchAndExplain(GTEST_REFERENCE_TO_CONST_(T) x, - MatchResultListener* listener) const { - // If either matcher1_ or matcher2_ doesn't match x, we only need - // to explain why one of them fails. - std::string all_match_result; - - for (size_t i = 0; i < matchers_.size(); ++i) { - StringMatchResultListener slistener; - if (matchers_[i].MatchAndExplain(x, &slistener)) { - if (all_match_result.empty()) { - all_match_result = slistener.str(); - } else { - std::string result = slistener.str(); - if (!result.empty()) { - all_match_result += ", and "; - all_match_result += result; - } - } - } else { - *listener << slistener.str(); - return false; - } - } - - // Otherwise we need to explain why *both* of them match. - *listener << all_match_result; - return true; - } - - private: - const std::vector<Matcher<T> > matchers_; - - GTEST_DISALLOW_ASSIGN_(AllOfMatcherImpl); -}; - -#if GTEST_LANG_CXX11 -// VariadicMatcher is used for the variadic implementation of -// AllOf(m_1, m_2, ...) and AnyOf(m_1, m_2, ...). -// CombiningMatcher<T> is used to recursively combine the provided matchers -// (of type Args...). -template <template <typename T> class CombiningMatcher, typename... Args> -class VariadicMatcher { - public: - VariadicMatcher(const Args&... matchers) // NOLINT - : matchers_(matchers...) { - static_assert(sizeof...(Args) > 0, "Must have at least one matcher."); - } - - // This template type conversion operator allows an - // VariadicMatcher<Matcher1, Matcher2...> object to match any type that - // all of the provided matchers (Matcher1, Matcher2, ...) can match. - template <typename T> - operator Matcher<T>() const { - std::vector<Matcher<T> > values; - CreateVariadicMatcher<T>(&values, std::integral_constant<size_t, 0>()); - return Matcher<T>(new CombiningMatcher<T>(internal::move(values))); - } - - private: - template <typename T, size_t I> - void CreateVariadicMatcher(std::vector<Matcher<T> >* values, - std::integral_constant<size_t, I>) const { - values->push_back(SafeMatcherCast<T>(std::get<I>(matchers_))); - CreateVariadicMatcher<T>(values, std::integral_constant<size_t, I + 1>()); - } - - template <typename T> - void CreateVariadicMatcher( - std::vector<Matcher<T> >*, - std::integral_constant<size_t, sizeof...(Args)>) const {} - - tuple<Args...> matchers_; - - GTEST_DISALLOW_ASSIGN_(VariadicMatcher); -}; - -template <typename... Args> -using AllOfMatcher = VariadicMatcher<AllOfMatcherImpl, Args...>; - -#endif // GTEST_LANG_CXX11 - -// Used for implementing the AllOf(m_1, ..., m_n) matcher, which -// matches a value that matches all of the matchers m_1, ..., and m_n. -template <typename Matcher1, typename Matcher2> -class BothOfMatcher { - public: - BothOfMatcher(Matcher1 matcher1, Matcher2 matcher2) - : matcher1_(matcher1), matcher2_(matcher2) {} - - // This template type conversion operator allows a - // BothOfMatcher<Matcher1, Matcher2> object to match any type that - // both Matcher1 and Matcher2 can match. - template <typename T> - operator Matcher<T>() const { - std::vector<Matcher<T> > values; - values.push_back(SafeMatcherCast<T>(matcher1_)); - values.push_back(SafeMatcherCast<T>(matcher2_)); - return Matcher<T>(new AllOfMatcherImpl<T>(internal::move(values))); - } - - private: - Matcher1 matcher1_; - Matcher2 matcher2_; - - GTEST_DISALLOW_ASSIGN_(BothOfMatcher); -}; - -// Implements the AnyOf(m1, m2) matcher for a particular argument type -// T. We do not nest it inside the AnyOfMatcher class template, as -// that will prevent different instantiations of AnyOfMatcher from -// sharing the same EitherOfMatcherImpl<T> class. -template <typename T> -class AnyOfMatcherImpl - : public MatcherInterface<GTEST_REFERENCE_TO_CONST_(T)> { - public: - explicit AnyOfMatcherImpl(std::vector<Matcher<T> > matchers) - : matchers_(internal::move(matchers)) {} - - virtual void DescribeTo(::std::ostream* os) const { - *os << "("; - for (size_t i = 0; i < matchers_.size(); ++i) { - if (i != 0) *os << ") or ("; - matchers_[i].DescribeTo(os); - } - *os << ")"; - } - - virtual void DescribeNegationTo(::std::ostream* os) const { - *os << "("; - for (size_t i = 0; i < matchers_.size(); ++i) { - if (i != 0) *os << ") and ("; - matchers_[i].DescribeNegationTo(os); - } - *os << ")"; - } - - virtual bool MatchAndExplain(GTEST_REFERENCE_TO_CONST_(T) x, - MatchResultListener* listener) const { - std::string no_match_result; - - // If either matcher1_ or matcher2_ matches x, we just need to - // explain why *one* of them matches. - for (size_t i = 0; i < matchers_.size(); ++i) { - StringMatchResultListener slistener; - if (matchers_[i].MatchAndExplain(x, &slistener)) { - *listener << slistener.str(); - return true; - } else { - if (no_match_result.empty()) { - no_match_result = slistener.str(); - } else { - std::string result = slistener.str(); - if (!result.empty()) { - no_match_result += ", and "; - no_match_result += result; - } - } - } - } - - // Otherwise we need to explain why *both* of them fail. - *listener << no_match_result; - return false; - } - - private: - const std::vector<Matcher<T> > matchers_; - - GTEST_DISALLOW_ASSIGN_(AnyOfMatcherImpl); -}; - -#if GTEST_LANG_CXX11 -// AnyOfMatcher is used for the variadic implementation of AnyOf(m_1, m_2, ...). -template <typename... Args> -using AnyOfMatcher = VariadicMatcher<AnyOfMatcherImpl, Args...>; - -#endif // GTEST_LANG_CXX11 - -// Used for implementing the AnyOf(m_1, ..., m_n) matcher, which -// matches a value that matches at least one of the matchers m_1, ..., -// and m_n. -template <typename Matcher1, typename Matcher2> -class EitherOfMatcher { - public: - EitherOfMatcher(Matcher1 matcher1, Matcher2 matcher2) - : matcher1_(matcher1), matcher2_(matcher2) {} - - // This template type conversion operator allows a - // EitherOfMatcher<Matcher1, Matcher2> object to match any type that - // both Matcher1 and Matcher2 can match. - template <typename T> - operator Matcher<T>() const { - std::vector<Matcher<T> > values; - values.push_back(SafeMatcherCast<T>(matcher1_)); - values.push_back(SafeMatcherCast<T>(matcher2_)); - return Matcher<T>(new AnyOfMatcherImpl<T>(internal::move(values))); - } - - private: - Matcher1 matcher1_; - Matcher2 matcher2_; - - GTEST_DISALLOW_ASSIGN_(EitherOfMatcher); -}; - -// Used for implementing Truly(pred), which turns a predicate into a -// matcher. -template <typename Predicate> -class TrulyMatcher { - public: - explicit TrulyMatcher(Predicate pred) : predicate_(pred) {} - - // This method template allows Truly(pred) to be used as a matcher - // for type T where T is the argument type of predicate 'pred'. The - // argument is passed by reference as the predicate may be - // interested in the address of the argument. - template <typename T> - bool MatchAndExplain(T& x, // NOLINT - MatchResultListener* /* listener */) const { - // Without the if-statement, MSVC sometimes warns about converting - // a value to bool (warning 4800). - // - // We cannot write 'return !!predicate_(x);' as that doesn't work - // when predicate_(x) returns a class convertible to bool but - // having no operator!(). - if (predicate_(x)) - return true; - return false; - } - - void DescribeTo(::std::ostream* os) const { - *os << "satisfies the given predicate"; - } - - void DescribeNegationTo(::std::ostream* os) const { - *os << "doesn't satisfy the given predicate"; - } - - private: - Predicate predicate_; - - GTEST_DISALLOW_ASSIGN_(TrulyMatcher); -}; - -// Used for implementing Matches(matcher), which turns a matcher into -// a predicate. -template <typename M> -class MatcherAsPredicate { - public: - explicit MatcherAsPredicate(M matcher) : matcher_(matcher) {} - - // This template operator() allows Matches(m) to be used as a - // predicate on type T where m is a matcher on type T. - // - // The argument x is passed by reference instead of by value, as - // some matcher may be interested in its address (e.g. as in - // Matches(Ref(n))(x)). - template <typename T> - bool operator()(const T& x) const { - // We let matcher_ commit to a particular type here instead of - // when the MatcherAsPredicate object was constructed. This - // allows us to write Matches(m) where m is a polymorphic matcher - // (e.g. Eq(5)). - // - // If we write Matcher<T>(matcher_).Matches(x) here, it won't - // compile when matcher_ has type Matcher<const T&>; if we write - // Matcher<const T&>(matcher_).Matches(x) here, it won't compile - // when matcher_ has type Matcher<T>; if we just write - // matcher_.Matches(x), it won't compile when matcher_ is - // polymorphic, e.g. Eq(5). - // - // MatcherCast<const T&>() is necessary for making the code work - // in all of the above situations. - return MatcherCast<const T&>(matcher_).Matches(x); - } - - private: - M matcher_; - - GTEST_DISALLOW_ASSIGN_(MatcherAsPredicate); -}; - -// For implementing ASSERT_THAT() and EXPECT_THAT(). The template -// argument M must be a type that can be converted to a matcher. -template <typename M> -class PredicateFormatterFromMatcher { - public: - explicit PredicateFormatterFromMatcher(M m) : matcher_(internal::move(m)) {} - - // This template () operator allows a PredicateFormatterFromMatcher - // object to act as a predicate-formatter suitable for using with - // Google Test's EXPECT_PRED_FORMAT1() macro. - template <typename T> - AssertionResult operator()(const char* value_text, const T& x) const { - // We convert matcher_ to a Matcher<const T&> *now* instead of - // when the PredicateFormatterFromMatcher object was constructed, - // as matcher_ may be polymorphic (e.g. NotNull()) and we won't - // know which type to instantiate it to until we actually see the - // type of x here. - // - // We write SafeMatcherCast<const T&>(matcher_) instead of - // Matcher<const T&>(matcher_), as the latter won't compile when - // matcher_ has type Matcher<T> (e.g. An<int>()). - // We don't write MatcherCast<const T&> either, as that allows - // potentially unsafe downcasting of the matcher argument. - const Matcher<const T&> matcher = SafeMatcherCast<const T&>(matcher_); - StringMatchResultListener listener; - if (MatchPrintAndExplain(x, matcher, &listener)) - return AssertionSuccess(); - - ::std::stringstream ss; - ss << "Value of: " << value_text << "\n" - << "Expected: "; - matcher.DescribeTo(&ss); - ss << "\n Actual: " << listener.str(); - return AssertionFailure() << ss.str(); - } - - private: - const M matcher_; - - GTEST_DISALLOW_ASSIGN_(PredicateFormatterFromMatcher); -}; - -// A helper function for converting a matcher to a predicate-formatter -// without the user needing to explicitly write the type. This is -// used for implementing ASSERT_THAT() and EXPECT_THAT(). -// Implementation detail: 'matcher' is received by-value to force decaying. -template <typename M> -inline PredicateFormatterFromMatcher<M> -MakePredicateFormatterFromMatcher(M matcher) { - return PredicateFormatterFromMatcher<M>(internal::move(matcher)); -} - -// Implements the polymorphic floating point equality matcher, which matches -// two float values using ULP-based approximation or, optionally, a -// user-specified epsilon. The template is meant to be instantiated with -// FloatType being either float or double. -template <typename FloatType> -class FloatingEqMatcher { - public: - // Constructor for FloatingEqMatcher. - // The matcher's input will be compared with expected. The matcher treats two - // NANs as equal if nan_eq_nan is true. Otherwise, under IEEE standards, - // equality comparisons between NANs will always return false. We specify a - // negative max_abs_error_ term to indicate that ULP-based approximation will - // be used for comparison. - FloatingEqMatcher(FloatType expected, bool nan_eq_nan) : - expected_(expected), nan_eq_nan_(nan_eq_nan), max_abs_error_(-1) { - } - - // Constructor that supports a user-specified max_abs_error that will be used - // for comparison instead of ULP-based approximation. The max absolute - // should be non-negative. - FloatingEqMatcher(FloatType expected, bool nan_eq_nan, - FloatType max_abs_error) - : expected_(expected), - nan_eq_nan_(nan_eq_nan), - max_abs_error_(max_abs_error) { - GTEST_CHECK_(max_abs_error >= 0) - << ", where max_abs_error is" << max_abs_error; - } - - // Implements floating point equality matcher as a Matcher<T>. - template <typename T> - class Impl : public MatcherInterface<T> { - public: - Impl(FloatType expected, bool nan_eq_nan, FloatType max_abs_error) - : expected_(expected), - nan_eq_nan_(nan_eq_nan), - max_abs_error_(max_abs_error) {} - - virtual bool MatchAndExplain(T value, - MatchResultListener* listener) const { - const FloatingPoint<FloatType> actual(value), expected(expected_); - - // Compares NaNs first, if nan_eq_nan_ is true. - if (actual.is_nan() || expected.is_nan()) { - if (actual.is_nan() && expected.is_nan()) { - return nan_eq_nan_; - } - // One is nan; the other is not nan. - return false; - } - if (HasMaxAbsError()) { - // We perform an equality check so that inf will match inf, regardless - // of error bounds. If the result of value - expected_ would result in - // overflow or if either value is inf, the default result is infinity, - // which should only match if max_abs_error_ is also infinity. - if (value == expected_) { - return true; - } - - const FloatType diff = value - expected_; - if (fabs(diff) <= max_abs_error_) { - return true; - } - - if (listener->IsInterested()) { - *listener << "which is " << diff << " from " << expected_; - } - return false; - } else { - return actual.AlmostEquals(expected); - } - } - - virtual void DescribeTo(::std::ostream* os) const { - // os->precision() returns the previously set precision, which we - // store to restore the ostream to its original configuration - // after outputting. - const ::std::streamsize old_precision = os->precision( - ::std::numeric_limits<FloatType>::digits10 + 2); - if (FloatingPoint<FloatType>(expected_).is_nan()) { - if (nan_eq_nan_) { - *os << "is NaN"; - } else { - *os << "never matches"; - } - } else { - *os << "is approximately " << expected_; - if (HasMaxAbsError()) { - *os << " (absolute error <= " << max_abs_error_ << ")"; - } - } - os->precision(old_precision); - } - - virtual void DescribeNegationTo(::std::ostream* os) const { - // As before, get original precision. - const ::std::streamsize old_precision = os->precision( - ::std::numeric_limits<FloatType>::digits10 + 2); - if (FloatingPoint<FloatType>(expected_).is_nan()) { - if (nan_eq_nan_) { - *os << "isn't NaN"; - } else { - *os << "is anything"; - } - } else { - *os << "isn't approximately " << expected_; - if (HasMaxAbsError()) { - *os << " (absolute error > " << max_abs_error_ << ")"; - } - } - // Restore original precision. - os->precision(old_precision); - } - - private: - bool HasMaxAbsError() const { - return max_abs_error_ >= 0; - } - - const FloatType expected_; - const bool nan_eq_nan_; - // max_abs_error will be used for value comparison when >= 0. - const FloatType max_abs_error_; - - GTEST_DISALLOW_ASSIGN_(Impl); - }; - - // The following 3 type conversion operators allow FloatEq(expected) and - // NanSensitiveFloatEq(expected) to be used as a Matcher<float>, a - // Matcher<const float&>, or a Matcher<float&>, but nothing else. - // (While Google's C++ coding style doesn't allow arguments passed - // by non-const reference, we may see them in code not conforming to - // the style. Therefore Google Mock needs to support them.) - operator Matcher<FloatType>() const { - return MakeMatcher( - new Impl<FloatType>(expected_, nan_eq_nan_, max_abs_error_)); - } - - operator Matcher<const FloatType&>() const { - return MakeMatcher( - new Impl<const FloatType&>(expected_, nan_eq_nan_, max_abs_error_)); - } - - operator Matcher<FloatType&>() const { - return MakeMatcher( - new Impl<FloatType&>(expected_, nan_eq_nan_, max_abs_error_)); - } - - private: - const FloatType expected_; - const bool nan_eq_nan_; - // max_abs_error will be used for value comparison when >= 0. - const FloatType max_abs_error_; - - GTEST_DISALLOW_ASSIGN_(FloatingEqMatcher); -}; - -// A 2-tuple ("binary") wrapper around FloatingEqMatcher: -// FloatingEq2Matcher() matches (x, y) by matching FloatingEqMatcher(x, false) -// against y, and FloatingEq2Matcher(e) matches FloatingEqMatcher(x, false, e) -// against y. The former implements "Eq", the latter "Near". At present, there -// is no version that compares NaNs as equal. -template <typename FloatType> -class FloatingEq2Matcher { - public: - FloatingEq2Matcher() { Init(-1, false); } - - explicit FloatingEq2Matcher(bool nan_eq_nan) { Init(-1, nan_eq_nan); } - - explicit FloatingEq2Matcher(FloatType max_abs_error) { - Init(max_abs_error, false); - } - - FloatingEq2Matcher(FloatType max_abs_error, bool nan_eq_nan) { - Init(max_abs_error, nan_eq_nan); - } - - template <typename T1, typename T2> - operator Matcher< ::testing::tuple<T1, T2> >() const { - return MakeMatcher( - new Impl< ::testing::tuple<T1, T2> >(max_abs_error_, nan_eq_nan_)); - } - template <typename T1, typename T2> - operator Matcher<const ::testing::tuple<T1, T2>&>() const { - return MakeMatcher( - new Impl<const ::testing::tuple<T1, T2>&>(max_abs_error_, nan_eq_nan_)); - } - - private: - static ::std::ostream& GetDesc(::std::ostream& os) { // NOLINT - return os << "an almost-equal pair"; - } - - template <typename Tuple> - class Impl : public MatcherInterface<Tuple> { - public: - Impl(FloatType max_abs_error, bool nan_eq_nan) : - max_abs_error_(max_abs_error), - nan_eq_nan_(nan_eq_nan) {} - - virtual bool MatchAndExplain(Tuple args, - MatchResultListener* listener) const { - if (max_abs_error_ == -1) { - FloatingEqMatcher<FloatType> fm(::testing::get<0>(args), nan_eq_nan_); - return static_cast<Matcher<FloatType> >(fm).MatchAndExplain( - ::testing::get<1>(args), listener); - } else { - FloatingEqMatcher<FloatType> fm(::testing::get<0>(args), nan_eq_nan_, - max_abs_error_); - return static_cast<Matcher<FloatType> >(fm).MatchAndExplain( - ::testing::get<1>(args), listener); - } - } - virtual void DescribeTo(::std::ostream* os) const { - *os << "are " << GetDesc; - } - virtual void DescribeNegationTo(::std::ostream* os) const { - *os << "aren't " << GetDesc; - } - - private: - FloatType max_abs_error_; - const bool nan_eq_nan_; - }; - - void Init(FloatType max_abs_error_val, bool nan_eq_nan_val) { - max_abs_error_ = max_abs_error_val; - nan_eq_nan_ = nan_eq_nan_val; - } - FloatType max_abs_error_; - bool nan_eq_nan_; -}; - -// Implements the Pointee(m) matcher for matching a pointer whose -// pointee matches matcher m. The pointer can be either raw or smart. -template <typename InnerMatcher> -class PointeeMatcher { - public: - explicit PointeeMatcher(const InnerMatcher& matcher) : matcher_(matcher) {} - - // This type conversion operator template allows Pointee(m) to be - // used as a matcher for any pointer type whose pointee type is - // compatible with the inner matcher, where type Pointer can be - // either a raw pointer or a smart pointer. - // - // The reason we do this instead of relying on - // MakePolymorphicMatcher() is that the latter is not flexible - // enough for implementing the DescribeTo() method of Pointee(). - template <typename Pointer> - operator Matcher<Pointer>() const { - return Matcher<Pointer>( - new Impl<GTEST_REFERENCE_TO_CONST_(Pointer)>(matcher_)); - } - - private: - // The monomorphic implementation that works for a particular pointer type. - template <typename Pointer> - class Impl : public MatcherInterface<Pointer> { - public: - typedef typename PointeeOf<GTEST_REMOVE_CONST_( // NOLINT - GTEST_REMOVE_REFERENCE_(Pointer))>::type Pointee; - - explicit Impl(const InnerMatcher& matcher) - : matcher_(MatcherCast<const Pointee&>(matcher)) {} - - virtual void DescribeTo(::std::ostream* os) const { - *os << "points to a value that "; - matcher_.DescribeTo(os); - } - - virtual void DescribeNegationTo(::std::ostream* os) const { - *os << "does not point to a value that "; - matcher_.DescribeTo(os); - } - - virtual bool MatchAndExplain(Pointer pointer, - MatchResultListener* listener) const { - if (GetRawPointer(pointer) == NULL) - return false; - - *listener << "which points to "; - return MatchPrintAndExplain(*pointer, matcher_, listener); - } - - private: - const Matcher<const Pointee&> matcher_; - - GTEST_DISALLOW_ASSIGN_(Impl); - }; - - const InnerMatcher matcher_; - - GTEST_DISALLOW_ASSIGN_(PointeeMatcher); -}; - -#if GTEST_HAS_RTTI -// Implements the WhenDynamicCastTo<T>(m) matcher that matches a pointer or -// reference that matches inner_matcher when dynamic_cast<T> is applied. -// The result of dynamic_cast<To> is forwarded to the inner matcher. -// If To is a pointer and the cast fails, the inner matcher will receive NULL. -// If To is a reference and the cast fails, this matcher returns false -// immediately. -template <typename To> -class WhenDynamicCastToMatcherBase { - public: - explicit WhenDynamicCastToMatcherBase(const Matcher<To>& matcher) - : matcher_(matcher) {} - - void DescribeTo(::std::ostream* os) const { - GetCastTypeDescription(os); - matcher_.DescribeTo(os); - } - - void DescribeNegationTo(::std::ostream* os) const { - GetCastTypeDescription(os); - matcher_.DescribeNegationTo(os); - } - - protected: - const Matcher<To> matcher_; - - static std::string GetToName() { - return GetTypeName<To>(); - } - - private: - static void GetCastTypeDescription(::std::ostream* os) { - *os << "when dynamic_cast to " << GetToName() << ", "; - } - - GTEST_DISALLOW_ASSIGN_(WhenDynamicCastToMatcherBase); -}; - -// Primary template. -// To is a pointer. Cast and forward the result. -template <typename To> -class WhenDynamicCastToMatcher : public WhenDynamicCastToMatcherBase<To> { - public: - explicit WhenDynamicCastToMatcher(const Matcher<To>& matcher) - : WhenDynamicCastToMatcherBase<To>(matcher) {} - - template <typename From> - bool MatchAndExplain(From from, MatchResultListener* listener) const { - // TODO(sbenza): Add more detail on failures. ie did the dyn_cast fail? - To to = dynamic_cast<To>(from); - return MatchPrintAndExplain(to, this->matcher_, listener); - } -}; - -// Specialize for references. -// In this case we return false if the dynamic_cast fails. -template <typename To> -class WhenDynamicCastToMatcher<To&> : public WhenDynamicCastToMatcherBase<To&> { - public: - explicit WhenDynamicCastToMatcher(const Matcher<To&>& matcher) - : WhenDynamicCastToMatcherBase<To&>(matcher) {} - - template <typename From> - bool MatchAndExplain(From& from, MatchResultListener* listener) const { - // We don't want an std::bad_cast here, so do the cast with pointers. - To* to = dynamic_cast<To*>(&from); - if (to == NULL) { - *listener << "which cannot be dynamic_cast to " << this->GetToName(); - return false; - } - return MatchPrintAndExplain(*to, this->matcher_, listener); - } -}; -#endif // GTEST_HAS_RTTI - -// Implements the Field() matcher for matching a field (i.e. member -// variable) of an object. -template <typename Class, typename FieldType> -class FieldMatcher { - public: - FieldMatcher(FieldType Class::*field, - const Matcher<const FieldType&>& matcher) - : field_(field), matcher_(matcher), whose_field_("whose given field ") {} - - FieldMatcher(const std::string& field_name, FieldType Class::*field, - const Matcher<const FieldType&>& matcher) - : field_(field), - matcher_(matcher), - whose_field_("whose field `" + field_name + "` ") {} - - void DescribeTo(::std::ostream* os) const { - *os << "is an object " << whose_field_; - matcher_.DescribeTo(os); - } - - void DescribeNegationTo(::std::ostream* os) const { - *os << "is an object " << whose_field_; - matcher_.DescribeNegationTo(os); - } - - template <typename T> - bool MatchAndExplain(const T& value, MatchResultListener* listener) const { - return MatchAndExplainImpl( - typename ::testing::internal:: - is_pointer<GTEST_REMOVE_CONST_(T)>::type(), - value, listener); - } - - private: - // The first argument of MatchAndExplainImpl() is needed to help - // Symbian's C++ compiler choose which overload to use. Its type is - // true_type iff the Field() matcher is used to match a pointer. - bool MatchAndExplainImpl(false_type /* is_not_pointer */, const Class& obj, - MatchResultListener* listener) const { - *listener << whose_field_ << "is "; - return MatchPrintAndExplain(obj.*field_, matcher_, listener); - } - - bool MatchAndExplainImpl(true_type /* is_pointer */, const Class* p, - MatchResultListener* listener) const { - if (p == NULL) - return false; - - *listener << "which points to an object "; - // Since *p has a field, it must be a class/struct/union type and - // thus cannot be a pointer. Therefore we pass false_type() as - // the first argument. - return MatchAndExplainImpl(false_type(), *p, listener); - } - - const FieldType Class::*field_; - const Matcher<const FieldType&> matcher_; - - // Contains either "whose given field " if the name of the field is unknown - // or "whose field `name_of_field` " if the name is known. - const std::string whose_field_; - - GTEST_DISALLOW_ASSIGN_(FieldMatcher); -}; - -// Implements the Property() matcher for matching a property -// (i.e. return value of a getter method) of an object. -// -// Property is a const-qualified member function of Class returning -// PropertyType. -template <typename Class, typename PropertyType, typename Property> -class PropertyMatcher { - public: - // The property may have a reference type, so 'const PropertyType&' - // may cause double references and fail to compile. That's why we - // need GTEST_REFERENCE_TO_CONST, which works regardless of - // PropertyType being a reference or not. - typedef GTEST_REFERENCE_TO_CONST_(PropertyType) RefToConstProperty; - - PropertyMatcher(Property property, const Matcher<RefToConstProperty>& matcher) - : property_(property), - matcher_(matcher), - whose_property_("whose given property ") {} - - PropertyMatcher(const std::string& property_name, Property property, - const Matcher<RefToConstProperty>& matcher) - : property_(property), - matcher_(matcher), - whose_property_("whose property `" + property_name + "` ") {} - - void DescribeTo(::std::ostream* os) const { - *os << "is an object " << whose_property_; - matcher_.DescribeTo(os); - } - - void DescribeNegationTo(::std::ostream* os) const { - *os << "is an object " << whose_property_; - matcher_.DescribeNegationTo(os); - } - - template <typename T> - bool MatchAndExplain(const T&value, MatchResultListener* listener) const { - return MatchAndExplainImpl( - typename ::testing::internal:: - is_pointer<GTEST_REMOVE_CONST_(T)>::type(), - value, listener); - } - - private: - // The first argument of MatchAndExplainImpl() is needed to help - // Symbian's C++ compiler choose which overload to use. Its type is - // true_type iff the Property() matcher is used to match a pointer. - bool MatchAndExplainImpl(false_type /* is_not_pointer */, const Class& obj, - MatchResultListener* listener) const { - *listener << whose_property_ << "is "; - // Cannot pass the return value (for example, int) to MatchPrintAndExplain, - // which takes a non-const reference as argument. -#if defined(_PREFAST_ ) && _MSC_VER == 1800 - // Workaround bug in VC++ 2013's /analyze parser. - // https://connect.microsoft.com/VisualStudio/feedback/details/1106363/internal-compiler-error-with-analyze-due-to-failure-to-infer-move - posix::Abort(); // To make sure it is never run. - return false; -#else - RefToConstProperty result = (obj.*property_)(); - return MatchPrintAndExplain(result, matcher_, listener); -#endif - } - - bool MatchAndExplainImpl(true_type /* is_pointer */, const Class* p, - MatchResultListener* listener) const { - if (p == NULL) - return false; - - *listener << "which points to an object "; - // Since *p has a property method, it must be a class/struct/union - // type and thus cannot be a pointer. Therefore we pass - // false_type() as the first argument. - return MatchAndExplainImpl(false_type(), *p, listener); - } - - Property property_; - const Matcher<RefToConstProperty> matcher_; - - // Contains either "whose given property " if the name of the property is - // unknown or "whose property `name_of_property` " if the name is known. - const std::string whose_property_; - - GTEST_DISALLOW_ASSIGN_(PropertyMatcher); -}; - -// Type traits specifying various features of different functors for ResultOf. -// The default template specifies features for functor objects. -// Functor classes have to typedef argument_type and result_type -// to be compatible with ResultOf. -template <typename Functor> -struct CallableTraits { - typedef typename Functor::result_type ResultType; - typedef Functor StorageType; - - static void CheckIsValid(Functor /* functor */) {} - template <typename T> - static ResultType Invoke(Functor f, T arg) { return f(arg); } -}; - -// Specialization for function pointers. -template <typename ArgType, typename ResType> -struct CallableTraits<ResType(*)(ArgType)> { - typedef ResType ResultType; - typedef ResType(*StorageType)(ArgType); - - static void CheckIsValid(ResType(*f)(ArgType)) { - GTEST_CHECK_(f != NULL) - << "NULL function pointer is passed into ResultOf()."; - } - template <typename T> - static ResType Invoke(ResType(*f)(ArgType), T arg) { - return (*f)(arg); - } -}; - -// Implements the ResultOf() matcher for matching a return value of a -// unary function of an object. -template <typename Callable> -class ResultOfMatcher { - public: - typedef typename CallableTraits<Callable>::ResultType ResultType; - - ResultOfMatcher(Callable callable, const Matcher<ResultType>& matcher) - : callable_(callable), matcher_(matcher) { - CallableTraits<Callable>::CheckIsValid(callable_); - } - - template <typename T> - operator Matcher<T>() const { - return Matcher<T>(new Impl<T>(callable_, matcher_)); - } - - private: - typedef typename CallableTraits<Callable>::StorageType CallableStorageType; - - template <typename T> - class Impl : public MatcherInterface<T> { - public: - Impl(CallableStorageType callable, const Matcher<ResultType>& matcher) - : callable_(callable), matcher_(matcher) {} - - virtual void DescribeTo(::std::ostream* os) const { - *os << "is mapped by the given callable to a value that "; - matcher_.DescribeTo(os); - } - - virtual void DescribeNegationTo(::std::ostream* os) const { - *os << "is mapped by the given callable to a value that "; - matcher_.DescribeNegationTo(os); - } - - virtual bool MatchAndExplain(T obj, MatchResultListener* listener) const { - *listener << "which is mapped by the given callable to "; - // Cannot pass the return value (for example, int) to - // MatchPrintAndExplain, which takes a non-const reference as argument. - ResultType result = - CallableTraits<Callable>::template Invoke<T>(callable_, obj); - return MatchPrintAndExplain(result, matcher_, listener); - } - - private: - // Functors often define operator() as non-const method even though - // they are actually stateless. But we need to use them even when - // 'this' is a const pointer. It's the user's responsibility not to - // use stateful callables with ResultOf(), which does't guarantee - // how many times the callable will be invoked. - mutable CallableStorageType callable_; - const Matcher<ResultType> matcher_; - - GTEST_DISALLOW_ASSIGN_(Impl); - }; // class Impl - - const CallableStorageType callable_; - const Matcher<ResultType> matcher_; - - GTEST_DISALLOW_ASSIGN_(ResultOfMatcher); -}; - -// Implements a matcher that checks the size of an STL-style container. -template <typename SizeMatcher> -class SizeIsMatcher { - public: - explicit SizeIsMatcher(const SizeMatcher& size_matcher) - : size_matcher_(size_matcher) { - } - - template <typename Container> - operator Matcher<Container>() const { - return MakeMatcher(new Impl<Container>(size_matcher_)); - } - - template <typename Container> - class Impl : public MatcherInterface<Container> { - public: - typedef internal::StlContainerView< - GTEST_REMOVE_REFERENCE_AND_CONST_(Container)> ContainerView; - typedef typename ContainerView::type::size_type SizeType; - explicit Impl(const SizeMatcher& size_matcher) - : size_matcher_(MatcherCast<SizeType>(size_matcher)) {} - - virtual void DescribeTo(::std::ostream* os) const { - *os << "size "; - size_matcher_.DescribeTo(os); - } - virtual void DescribeNegationTo(::std::ostream* os) const { - *os << "size "; - size_matcher_.DescribeNegationTo(os); - } - - virtual bool MatchAndExplain(Container container, - MatchResultListener* listener) const { - SizeType size = container.size(); - StringMatchResultListener size_listener; - const bool result = size_matcher_.MatchAndExplain(size, &size_listener); - *listener - << "whose size " << size << (result ? " matches" : " doesn't match"); - PrintIfNotEmpty(size_listener.str(), listener->stream()); - return result; - } - - private: - const Matcher<SizeType> size_matcher_; - GTEST_DISALLOW_ASSIGN_(Impl); - }; - - private: - const SizeMatcher size_matcher_; - GTEST_DISALLOW_ASSIGN_(SizeIsMatcher); -}; - -// Implements a matcher that checks the begin()..end() distance of an STL-style -// container. -template <typename DistanceMatcher> -class BeginEndDistanceIsMatcher { - public: - explicit BeginEndDistanceIsMatcher(const DistanceMatcher& distance_matcher) - : distance_matcher_(distance_matcher) {} - - template <typename Container> - operator Matcher<Container>() const { - return MakeMatcher(new Impl<Container>(distance_matcher_)); - } - - template <typename Container> - class Impl : public MatcherInterface<Container> { - public: - typedef internal::StlContainerView< - GTEST_REMOVE_REFERENCE_AND_CONST_(Container)> ContainerView; - typedef typename std::iterator_traits< - typename ContainerView::type::const_iterator>::difference_type - DistanceType; - explicit Impl(const DistanceMatcher& distance_matcher) - : distance_matcher_(MatcherCast<DistanceType>(distance_matcher)) {} - - virtual void DescribeTo(::std::ostream* os) const { - *os << "distance between begin() and end() "; - distance_matcher_.DescribeTo(os); - } - virtual void DescribeNegationTo(::std::ostream* os) const { - *os << "distance between begin() and end() "; - distance_matcher_.DescribeNegationTo(os); - } - - virtual bool MatchAndExplain(Container container, - MatchResultListener* listener) const { -#if GTEST_HAS_STD_BEGIN_AND_END_ - using std::begin; - using std::end; - DistanceType distance = std::distance(begin(container), end(container)); -#else - DistanceType distance = std::distance(container.begin(), container.end()); -#endif - StringMatchResultListener distance_listener; - const bool result = - distance_matcher_.MatchAndExplain(distance, &distance_listener); - *listener << "whose distance between begin() and end() " << distance - << (result ? " matches" : " doesn't match"); - PrintIfNotEmpty(distance_listener.str(), listener->stream()); - return result; - } - - private: - const Matcher<DistanceType> distance_matcher_; - GTEST_DISALLOW_ASSIGN_(Impl); - }; - - private: - const DistanceMatcher distance_matcher_; - GTEST_DISALLOW_ASSIGN_(BeginEndDistanceIsMatcher); -}; - -// Implements an equality matcher for any STL-style container whose elements -// support ==. This matcher is like Eq(), but its failure explanations provide -// more detailed information that is useful when the container is used as a set. -// The failure message reports elements that are in one of the operands but not -// the other. The failure messages do not report duplicate or out-of-order -// elements in the containers (which don't properly matter to sets, but can -// occur if the containers are vectors or lists, for example). -// -// Uses the container's const_iterator, value_type, operator ==, -// begin(), and end(). -template <typename Container> -class ContainerEqMatcher { - public: - typedef internal::StlContainerView<Container> View; - typedef typename View::type StlContainer; - typedef typename View::const_reference StlContainerReference; - - // We make a copy of expected in case the elements in it are modified - // after this matcher is created. - explicit ContainerEqMatcher(const Container& expected) - : expected_(View::Copy(expected)) { - // Makes sure the user doesn't instantiate this class template - // with a const or reference type. - (void)testing::StaticAssertTypeEq<Container, - GTEST_REMOVE_REFERENCE_AND_CONST_(Container)>(); - } - - void DescribeTo(::std::ostream* os) const { - *os << "equals "; - UniversalPrint(expected_, os); - } - void DescribeNegationTo(::std::ostream* os) const { - *os << "does not equal "; - UniversalPrint(expected_, os); - } - - template <typename LhsContainer> - bool MatchAndExplain(const LhsContainer& lhs, - MatchResultListener* listener) const { - // GTEST_REMOVE_CONST_() is needed to work around an MSVC 8.0 bug - // that causes LhsContainer to be a const type sometimes. - typedef internal::StlContainerView<GTEST_REMOVE_CONST_(LhsContainer)> - LhsView; - typedef typename LhsView::type LhsStlContainer; - StlContainerReference lhs_stl_container = LhsView::ConstReference(lhs); - if (lhs_stl_container == expected_) - return true; - - ::std::ostream* const os = listener->stream(); - if (os != NULL) { - // Something is different. Check for extra values first. - bool printed_header = false; - for (typename LhsStlContainer::const_iterator it = - lhs_stl_container.begin(); - it != lhs_stl_container.end(); ++it) { - if (internal::ArrayAwareFind(expected_.begin(), expected_.end(), *it) == - expected_.end()) { - if (printed_header) { - *os << ", "; - } else { - *os << "which has these unexpected elements: "; - printed_header = true; - } - UniversalPrint(*it, os); - } - } - - // Now check for missing values. - bool printed_header2 = false; - for (typename StlContainer::const_iterator it = expected_.begin(); - it != expected_.end(); ++it) { - if (internal::ArrayAwareFind( - lhs_stl_container.begin(), lhs_stl_container.end(), *it) == - lhs_stl_container.end()) { - if (printed_header2) { - *os << ", "; - } else { - *os << (printed_header ? ",\nand" : "which") - << " doesn't have these expected elements: "; - printed_header2 = true; - } - UniversalPrint(*it, os); - } - } - } - - return false; - } - - private: - const StlContainer expected_; - - GTEST_DISALLOW_ASSIGN_(ContainerEqMatcher); -}; - -// A comparator functor that uses the < operator to compare two values. -struct LessComparator { - template <typename T, typename U> - bool operator()(const T& lhs, const U& rhs) const { return lhs < rhs; } -}; - -// Implements WhenSortedBy(comparator, container_matcher). -template <typename Comparator, typename ContainerMatcher> -class WhenSortedByMatcher { - public: - WhenSortedByMatcher(const Comparator& comparator, - const ContainerMatcher& matcher) - : comparator_(comparator), matcher_(matcher) {} - - template <typename LhsContainer> - operator Matcher<LhsContainer>() const { - return MakeMatcher(new Impl<LhsContainer>(comparator_, matcher_)); - } - - template <typename LhsContainer> - class Impl : public MatcherInterface<LhsContainer> { - public: - typedef internal::StlContainerView< - GTEST_REMOVE_REFERENCE_AND_CONST_(LhsContainer)> LhsView; - typedef typename LhsView::type LhsStlContainer; - typedef typename LhsView::const_reference LhsStlContainerReference; - // Transforms std::pair<const Key, Value> into std::pair<Key, Value> - // so that we can match associative containers. - typedef typename RemoveConstFromKey< - typename LhsStlContainer::value_type>::type LhsValue; - - Impl(const Comparator& comparator, const ContainerMatcher& matcher) - : comparator_(comparator), matcher_(matcher) {} - - virtual void DescribeTo(::std::ostream* os) const { - *os << "(when sorted) "; - matcher_.DescribeTo(os); - } - - virtual void DescribeNegationTo(::std::ostream* os) const { - *os << "(when sorted) "; - matcher_.DescribeNegationTo(os); - } - - virtual bool MatchAndExplain(LhsContainer lhs, - MatchResultListener* listener) const { - LhsStlContainerReference lhs_stl_container = LhsView::ConstReference(lhs); - ::std::vector<LhsValue> sorted_container(lhs_stl_container.begin(), - lhs_stl_container.end()); - ::std::sort( - sorted_container.begin(), sorted_container.end(), comparator_); - - if (!listener->IsInterested()) { - // If the listener is not interested, we do not need to - // construct the inner explanation. - return matcher_.Matches(sorted_container); - } - - *listener << "which is "; - UniversalPrint(sorted_container, listener->stream()); - *listener << " when sorted"; - - StringMatchResultListener inner_listener; - const bool match = matcher_.MatchAndExplain(sorted_container, - &inner_listener); - PrintIfNotEmpty(inner_listener.str(), listener->stream()); - return match; - } - - private: - const Comparator comparator_; - const Matcher<const ::std::vector<LhsValue>&> matcher_; - - GTEST_DISALLOW_COPY_AND_ASSIGN_(Impl); - }; - - private: - const Comparator comparator_; - const ContainerMatcher matcher_; - - GTEST_DISALLOW_ASSIGN_(WhenSortedByMatcher); -}; - -// Implements Pointwise(tuple_matcher, rhs_container). tuple_matcher -// must be able to be safely cast to Matcher<tuple<const T1&, const -// T2&> >, where T1 and T2 are the types of elements in the LHS -// container and the RHS container respectively. -template <typename TupleMatcher, typename RhsContainer> -class PointwiseMatcher { - GTEST_COMPILE_ASSERT_( - !IsHashTable<GTEST_REMOVE_REFERENCE_AND_CONST_(RhsContainer)>::value, - use_UnorderedPointwise_with_hash_tables); - - public: - typedef internal::StlContainerView<RhsContainer> RhsView; - typedef typename RhsView::type RhsStlContainer; - typedef typename RhsStlContainer::value_type RhsValue; - - // Like ContainerEq, we make a copy of rhs in case the elements in - // it are modified after this matcher is created. - PointwiseMatcher(const TupleMatcher& tuple_matcher, const RhsContainer& rhs) - : tuple_matcher_(tuple_matcher), rhs_(RhsView::Copy(rhs)) { - // Makes sure the user doesn't instantiate this class template - // with a const or reference type. - (void)testing::StaticAssertTypeEq<RhsContainer, - GTEST_REMOVE_REFERENCE_AND_CONST_(RhsContainer)>(); - } - - template <typename LhsContainer> - operator Matcher<LhsContainer>() const { - GTEST_COMPILE_ASSERT_( - !IsHashTable<GTEST_REMOVE_REFERENCE_AND_CONST_(LhsContainer)>::value, - use_UnorderedPointwise_with_hash_tables); - - return MakeMatcher(new Impl<LhsContainer>(tuple_matcher_, rhs_)); - } - - template <typename LhsContainer> - class Impl : public MatcherInterface<LhsContainer> { - public: - typedef internal::StlContainerView< - GTEST_REMOVE_REFERENCE_AND_CONST_(LhsContainer)> LhsView; - typedef typename LhsView::type LhsStlContainer; - typedef typename LhsView::const_reference LhsStlContainerReference; - typedef typename LhsStlContainer::value_type LhsValue; - // We pass the LHS value and the RHS value to the inner matcher by - // reference, as they may be expensive to copy. We must use tuple - // instead of pair here, as a pair cannot hold references (C++ 98, - // 20.2.2 [lib.pairs]). - typedef ::testing::tuple<const LhsValue&, const RhsValue&> InnerMatcherArg; - - Impl(const TupleMatcher& tuple_matcher, const RhsStlContainer& rhs) - // mono_tuple_matcher_ holds a monomorphic version of the tuple matcher. - : mono_tuple_matcher_(SafeMatcherCast<InnerMatcherArg>(tuple_matcher)), - rhs_(rhs) {} - - virtual void DescribeTo(::std::ostream* os) const { - *os << "contains " << rhs_.size() - << " values, where each value and its corresponding value in "; - UniversalPrinter<RhsStlContainer>::Print(rhs_, os); - *os << " "; - mono_tuple_matcher_.DescribeTo(os); - } - virtual void DescribeNegationTo(::std::ostream* os) const { - *os << "doesn't contain exactly " << rhs_.size() - << " values, or contains a value x at some index i" - << " where x and the i-th value of "; - UniversalPrint(rhs_, os); - *os << " "; - mono_tuple_matcher_.DescribeNegationTo(os); - } - - virtual bool MatchAndExplain(LhsContainer lhs, - MatchResultListener* listener) const { - LhsStlContainerReference lhs_stl_container = LhsView::ConstReference(lhs); - const size_t actual_size = lhs_stl_container.size(); - if (actual_size != rhs_.size()) { - *listener << "which contains " << actual_size << " values"; - return false; - } - - typename LhsStlContainer::const_iterator left = lhs_stl_container.begin(); - typename RhsStlContainer::const_iterator right = rhs_.begin(); - for (size_t i = 0; i != actual_size; ++i, ++left, ++right) { - if (listener->IsInterested()) { - StringMatchResultListener inner_listener; - // Create InnerMatcherArg as a temporarily object to avoid it outlives - // *left and *right. Dereference or the conversion to `const T&` may - // return temp objects, e.g for vector<bool>. - if (!mono_tuple_matcher_.MatchAndExplain( - InnerMatcherArg(ImplicitCast_<const LhsValue&>(*left), - ImplicitCast_<const RhsValue&>(*right)), - &inner_listener)) { - *listener << "where the value pair ("; - UniversalPrint(*left, listener->stream()); - *listener << ", "; - UniversalPrint(*right, listener->stream()); - *listener << ") at index #" << i << " don't match"; - PrintIfNotEmpty(inner_listener.str(), listener->stream()); - return false; - } - } else { - if (!mono_tuple_matcher_.Matches( - InnerMatcherArg(ImplicitCast_<const LhsValue&>(*left), - ImplicitCast_<const RhsValue&>(*right)))) - return false; - } - } - - return true; - } - - private: - const Matcher<InnerMatcherArg> mono_tuple_matcher_; - const RhsStlContainer rhs_; - - GTEST_DISALLOW_ASSIGN_(Impl); - }; - - private: - const TupleMatcher tuple_matcher_; - const RhsStlContainer rhs_; - - GTEST_DISALLOW_ASSIGN_(PointwiseMatcher); -}; - -// Holds the logic common to ContainsMatcherImpl and EachMatcherImpl. -template <typename Container> -class QuantifierMatcherImpl : public MatcherInterface<Container> { - public: - typedef GTEST_REMOVE_REFERENCE_AND_CONST_(Container) RawContainer; - typedef StlContainerView<RawContainer> View; - typedef typename View::type StlContainer; - typedef typename View::const_reference StlContainerReference; - typedef typename StlContainer::value_type Element; - - template <typename InnerMatcher> - explicit QuantifierMatcherImpl(InnerMatcher inner_matcher) - : inner_matcher_( - testing::SafeMatcherCast<const Element&>(inner_matcher)) {} - - // Checks whether: - // * All elements in the container match, if all_elements_should_match. - // * Any element in the container matches, if !all_elements_should_match. - bool MatchAndExplainImpl(bool all_elements_should_match, - Container container, - MatchResultListener* listener) const { - StlContainerReference stl_container = View::ConstReference(container); - size_t i = 0; - for (typename StlContainer::const_iterator it = stl_container.begin(); - it != stl_container.end(); ++it, ++i) { - StringMatchResultListener inner_listener; - const bool matches = inner_matcher_.MatchAndExplain(*it, &inner_listener); - - if (matches != all_elements_should_match) { - *listener << "whose element #" << i - << (matches ? " matches" : " doesn't match"); - PrintIfNotEmpty(inner_listener.str(), listener->stream()); - return !all_elements_should_match; - } - } - return all_elements_should_match; - } - - protected: - const Matcher<const Element&> inner_matcher_; - - GTEST_DISALLOW_ASSIGN_(QuantifierMatcherImpl); -}; - -// Implements Contains(element_matcher) for the given argument type Container. -// Symmetric to EachMatcherImpl. -template <typename Container> -class ContainsMatcherImpl : public QuantifierMatcherImpl<Container> { - public: - template <typename InnerMatcher> - explicit ContainsMatcherImpl(InnerMatcher inner_matcher) - : QuantifierMatcherImpl<Container>(inner_matcher) {} - - // Describes what this matcher does. - virtual void DescribeTo(::std::ostream* os) const { - *os << "contains at least one element that "; - this->inner_matcher_.DescribeTo(os); - } - - virtual void DescribeNegationTo(::std::ostream* os) const { - *os << "doesn't contain any element that "; - this->inner_matcher_.DescribeTo(os); - } - - virtual bool MatchAndExplain(Container container, - MatchResultListener* listener) const { - return this->MatchAndExplainImpl(false, container, listener); - } - - private: - GTEST_DISALLOW_ASSIGN_(ContainsMatcherImpl); -}; - -// Implements Each(element_matcher) for the given argument type Container. -// Symmetric to ContainsMatcherImpl. -template <typename Container> -class EachMatcherImpl : public QuantifierMatcherImpl<Container> { - public: - template <typename InnerMatcher> - explicit EachMatcherImpl(InnerMatcher inner_matcher) - : QuantifierMatcherImpl<Container>(inner_matcher) {} - - // Describes what this matcher does. - virtual void DescribeTo(::std::ostream* os) const { - *os << "only contains elements that "; - this->inner_matcher_.DescribeTo(os); - } - - virtual void DescribeNegationTo(::std::ostream* os) const { - *os << "contains some element that "; - this->inner_matcher_.DescribeNegationTo(os); - } - - virtual bool MatchAndExplain(Container container, - MatchResultListener* listener) const { - return this->MatchAndExplainImpl(true, container, listener); - } - - private: - GTEST_DISALLOW_ASSIGN_(EachMatcherImpl); -}; - -// Implements polymorphic Contains(element_matcher). -template <typename M> -class ContainsMatcher { - public: - explicit ContainsMatcher(M m) : inner_matcher_(m) {} - - template <typename Container> - operator Matcher<Container>() const { - return MakeMatcher(new ContainsMatcherImpl<Container>(inner_matcher_)); - } - - private: - const M inner_matcher_; - - GTEST_DISALLOW_ASSIGN_(ContainsMatcher); -}; - -// Implements polymorphic Each(element_matcher). -template <typename M> -class EachMatcher { - public: - explicit EachMatcher(M m) : inner_matcher_(m) {} - - template <typename Container> - operator Matcher<Container>() const { - return MakeMatcher(new EachMatcherImpl<Container>(inner_matcher_)); - } - - private: - const M inner_matcher_; - - GTEST_DISALLOW_ASSIGN_(EachMatcher); -}; - -struct Rank1 {}; -struct Rank0 : Rank1 {}; - -namespace pair_getters { -#if GTEST_LANG_CXX11 -using std::get; -template <typename T> -auto First(T& x, Rank1) -> decltype(get<0>(x)) { // NOLINT - return get<0>(x); -} -template <typename T> -auto First(T& x, Rank0) -> decltype((x.first)) { // NOLINT - return x.first; -} - -template <typename T> -auto Second(T& x, Rank1) -> decltype(get<1>(x)) { // NOLINT - return get<1>(x); -} -template <typename T> -auto Second(T& x, Rank0) -> decltype((x.second)) { // NOLINT - return x.second; -} -#else -template <typename T> -typename T::first_type& First(T& x, Rank0) { // NOLINT - return x.first; -} -template <typename T> -const typename T::first_type& First(const T& x, Rank0) { - return x.first; -} - -template <typename T> -typename T::second_type& Second(T& x, Rank0) { // NOLINT - return x.second; -} -template <typename T> -const typename T::second_type& Second(const T& x, Rank0) { - return x.second; -} -#endif // GTEST_LANG_CXX11 -} // namespace pair_getters - -// Implements Key(inner_matcher) for the given argument pair type. -// Key(inner_matcher) matches an std::pair whose 'first' field matches -// inner_matcher. For example, Contains(Key(Ge(5))) can be used to match an -// std::map that contains at least one element whose key is >= 5. -template <typename PairType> -class KeyMatcherImpl : public MatcherInterface<PairType> { - public: - typedef GTEST_REMOVE_REFERENCE_AND_CONST_(PairType) RawPairType; - typedef typename RawPairType::first_type KeyType; - - template <typename InnerMatcher> - explicit KeyMatcherImpl(InnerMatcher inner_matcher) - : inner_matcher_( - testing::SafeMatcherCast<const KeyType&>(inner_matcher)) { - } - - // Returns true iff 'key_value.first' (the key) matches the inner matcher. - virtual bool MatchAndExplain(PairType key_value, - MatchResultListener* listener) const { - StringMatchResultListener inner_listener; - const bool match = inner_matcher_.MatchAndExplain( - pair_getters::First(key_value, Rank0()), &inner_listener); - const std::string explanation = inner_listener.str(); - if (explanation != "") { - *listener << "whose first field is a value " << explanation; - } - return match; - } - - // Describes what this matcher does. - virtual void DescribeTo(::std::ostream* os) const { - *os << "has a key that "; - inner_matcher_.DescribeTo(os); - } - - // Describes what the negation of this matcher does. - virtual void DescribeNegationTo(::std::ostream* os) const { - *os << "doesn't have a key that "; - inner_matcher_.DescribeTo(os); - } - - private: - const Matcher<const KeyType&> inner_matcher_; - - GTEST_DISALLOW_ASSIGN_(KeyMatcherImpl); -}; - -// Implements polymorphic Key(matcher_for_key). -template <typename M> -class KeyMatcher { - public: - explicit KeyMatcher(M m) : matcher_for_key_(m) {} - - template <typename PairType> - operator Matcher<PairType>() const { - return MakeMatcher(new KeyMatcherImpl<PairType>(matcher_for_key_)); - } - - private: - const M matcher_for_key_; - - GTEST_DISALLOW_ASSIGN_(KeyMatcher); -}; - -// Implements Pair(first_matcher, second_matcher) for the given argument pair -// type with its two matchers. See Pair() function below. -template <typename PairType> -class PairMatcherImpl : public MatcherInterface<PairType> { - public: - typedef GTEST_REMOVE_REFERENCE_AND_CONST_(PairType) RawPairType; - typedef typename RawPairType::first_type FirstType; - typedef typename RawPairType::second_type SecondType; - - template <typename FirstMatcher, typename SecondMatcher> - PairMatcherImpl(FirstMatcher first_matcher, SecondMatcher second_matcher) - : first_matcher_( - testing::SafeMatcherCast<const FirstType&>(first_matcher)), - second_matcher_( - testing::SafeMatcherCast<const SecondType&>(second_matcher)) { - } - - // Describes what this matcher does. - virtual void DescribeTo(::std::ostream* os) const { - *os << "has a first field that "; - first_matcher_.DescribeTo(os); - *os << ", and has a second field that "; - second_matcher_.DescribeTo(os); - } - - // Describes what the negation of this matcher does. - virtual void DescribeNegationTo(::std::ostream* os) const { - *os << "has a first field that "; - first_matcher_.DescribeNegationTo(os); - *os << ", or has a second field that "; - second_matcher_.DescribeNegationTo(os); - } - - // Returns true iff 'a_pair.first' matches first_matcher and 'a_pair.second' - // matches second_matcher. - virtual bool MatchAndExplain(PairType a_pair, - MatchResultListener* listener) const { - if (!listener->IsInterested()) { - // If the listener is not interested, we don't need to construct the - // explanation. - return first_matcher_.Matches(pair_getters::First(a_pair, Rank0())) && - second_matcher_.Matches(pair_getters::Second(a_pair, Rank0())); - } - StringMatchResultListener first_inner_listener; - if (!first_matcher_.MatchAndExplain(pair_getters::First(a_pair, Rank0()), - &first_inner_listener)) { - *listener << "whose first field does not match"; - PrintIfNotEmpty(first_inner_listener.str(), listener->stream()); - return false; - } - StringMatchResultListener second_inner_listener; - if (!second_matcher_.MatchAndExplain(pair_getters::Second(a_pair, Rank0()), - &second_inner_listener)) { - *listener << "whose second field does not match"; - PrintIfNotEmpty(second_inner_listener.str(), listener->stream()); - return false; - } - ExplainSuccess(first_inner_listener.str(), second_inner_listener.str(), - listener); - return true; - } - - private: - void ExplainSuccess(const std::string& first_explanation, - const std::string& second_explanation, - MatchResultListener* listener) const { - *listener << "whose both fields match"; - if (first_explanation != "") { - *listener << ", where the first field is a value " << first_explanation; - } - if (second_explanation != "") { - *listener << ", "; - if (first_explanation != "") { - *listener << "and "; - } else { - *listener << "where "; - } - *listener << "the second field is a value " << second_explanation; - } - } - - const Matcher<const FirstType&> first_matcher_; - const Matcher<const SecondType&> second_matcher_; - - GTEST_DISALLOW_ASSIGN_(PairMatcherImpl); -}; - -// Implements polymorphic Pair(first_matcher, second_matcher). -template <typename FirstMatcher, typename SecondMatcher> -class PairMatcher { - public: - PairMatcher(FirstMatcher first_matcher, SecondMatcher second_matcher) - : first_matcher_(first_matcher), second_matcher_(second_matcher) {} - - template <typename PairType> - operator Matcher<PairType> () const { - return MakeMatcher( - new PairMatcherImpl<PairType>( - first_matcher_, second_matcher_)); - } - - private: - const FirstMatcher first_matcher_; - const SecondMatcher second_matcher_; - - GTEST_DISALLOW_ASSIGN_(PairMatcher); -}; - -// Implements ElementsAre() and ElementsAreArray(). -template <typename Container> -class ElementsAreMatcherImpl : public MatcherInterface<Container> { - public: - typedef GTEST_REMOVE_REFERENCE_AND_CONST_(Container) RawContainer; - typedef internal::StlContainerView<RawContainer> View; - typedef typename View::type StlContainer; - typedef typename View::const_reference StlContainerReference; - typedef typename StlContainer::value_type Element; - - // Constructs the matcher from a sequence of element values or - // element matchers. - template <typename InputIter> - ElementsAreMatcherImpl(InputIter first, InputIter last) { - while (first != last) { - matchers_.push_back(MatcherCast<const Element&>(*first++)); - } - } - - // Describes what this matcher does. - virtual void DescribeTo(::std::ostream* os) const { - if (count() == 0) { - *os << "is empty"; - } else if (count() == 1) { - *os << "has 1 element that "; - matchers_[0].DescribeTo(os); - } else { - *os << "has " << Elements(count()) << " where\n"; - for (size_t i = 0; i != count(); ++i) { - *os << "element #" << i << " "; - matchers_[i].DescribeTo(os); - if (i + 1 < count()) { - *os << ",\n"; - } - } - } - } - - // Describes what the negation of this matcher does. - virtual void DescribeNegationTo(::std::ostream* os) const { - if (count() == 0) { - *os << "isn't empty"; - return; - } - - *os << "doesn't have " << Elements(count()) << ", or\n"; - for (size_t i = 0; i != count(); ++i) { - *os << "element #" << i << " "; - matchers_[i].DescribeNegationTo(os); - if (i + 1 < count()) { - *os << ", or\n"; - } - } - } - - virtual bool MatchAndExplain(Container container, - MatchResultListener* listener) const { - // To work with stream-like "containers", we must only walk - // through the elements in one pass. - - const bool listener_interested = listener->IsInterested(); - - // explanations[i] is the explanation of the element at index i. - ::std::vector<std::string> explanations(count()); - StlContainerReference stl_container = View::ConstReference(container); - typename StlContainer::const_iterator it = stl_container.begin(); - size_t exam_pos = 0; - bool mismatch_found = false; // Have we found a mismatched element yet? - - // Go through the elements and matchers in pairs, until we reach - // the end of either the elements or the matchers, or until we find a - // mismatch. - for (; it != stl_container.end() && exam_pos != count(); ++it, ++exam_pos) { - bool match; // Does the current element match the current matcher? - if (listener_interested) { - StringMatchResultListener s; - match = matchers_[exam_pos].MatchAndExplain(*it, &s); - explanations[exam_pos] = s.str(); - } else { - match = matchers_[exam_pos].Matches(*it); - } - - if (!match) { - mismatch_found = true; - break; - } - } - // If mismatch_found is true, 'exam_pos' is the index of the mismatch. - - // Find how many elements the actual container has. We avoid - // calling size() s.t. this code works for stream-like "containers" - // that don't define size(). - size_t actual_count = exam_pos; - for (; it != stl_container.end(); ++it) { - ++actual_count; - } - - if (actual_count != count()) { - // The element count doesn't match. If the container is empty, - // there's no need to explain anything as Google Mock already - // prints the empty container. Otherwise we just need to show - // how many elements there actually are. - if (listener_interested && (actual_count != 0)) { - *listener << "which has " << Elements(actual_count); - } - return false; - } - - if (mismatch_found) { - // The element count matches, but the exam_pos-th element doesn't match. - if (listener_interested) { - *listener << "whose element #" << exam_pos << " doesn't match"; - PrintIfNotEmpty(explanations[exam_pos], listener->stream()); - } - return false; - } - - // Every element matches its expectation. We need to explain why - // (the obvious ones can be skipped). - if (listener_interested) { - bool reason_printed = false; - for (size_t i = 0; i != count(); ++i) { - const std::string& s = explanations[i]; - if (!s.empty()) { - if (reason_printed) { - *listener << ",\nand "; - } - *listener << "whose element #" << i << " matches, " << s; - reason_printed = true; - } - } - } - return true; - } - - private: - static Message Elements(size_t count) { - return Message() << count << (count == 1 ? " element" : " elements"); - } - - size_t count() const { return matchers_.size(); } - - ::std::vector<Matcher<const Element&> > matchers_; - - GTEST_DISALLOW_ASSIGN_(ElementsAreMatcherImpl); -}; - -// Connectivity matrix of (elements X matchers), in element-major order. -// Initially, there are no edges. -// Use NextGraph() to iterate over all possible edge configurations. -// Use Randomize() to generate a random edge configuration. -class GTEST_API_ MatchMatrix { - public: - MatchMatrix(size_t num_elements, size_t num_matchers) - : num_elements_(num_elements), - num_matchers_(num_matchers), - matched_(num_elements_* num_matchers_, 0) { - } - - size_t LhsSize() const { return num_elements_; } - size_t RhsSize() const { return num_matchers_; } - bool HasEdge(size_t ilhs, size_t irhs) const { - return matched_[SpaceIndex(ilhs, irhs)] == 1; - } - void SetEdge(size_t ilhs, size_t irhs, bool b) { - matched_[SpaceIndex(ilhs, irhs)] = b ? 1 : 0; - } - - // Treating the connectivity matrix as a (LhsSize()*RhsSize())-bit number, - // adds 1 to that number; returns false if incrementing the graph left it - // empty. - bool NextGraph(); - - void Randomize(); - - std::string DebugString() const; - - private: - size_t SpaceIndex(size_t ilhs, size_t irhs) const { - return ilhs * num_matchers_ + irhs; - } - - size_t num_elements_; - size_t num_matchers_; - - // Each element is a char interpreted as bool. They are stored as a - // flattened array in lhs-major order, use 'SpaceIndex()' to translate - // a (ilhs, irhs) matrix coordinate into an offset. - ::std::vector<char> matched_; -}; - -typedef ::std::pair<size_t, size_t> ElementMatcherPair; -typedef ::std::vector<ElementMatcherPair> ElementMatcherPairs; - -// Returns a maximum bipartite matching for the specified graph 'g'. -// The matching is represented as a vector of {element, matcher} pairs. -GTEST_API_ ElementMatcherPairs -FindMaxBipartiteMatching(const MatchMatrix& g); - -struct UnorderedMatcherRequire { - enum Flags { - Superset = 1 << 0, - Subset = 1 << 1, - ExactMatch = Superset | Subset, - }; -}; - -// Untyped base class for implementing UnorderedElementsAre. By -// putting logic that's not specific to the element type here, we -// reduce binary bloat and increase compilation speed. -class GTEST_API_ UnorderedElementsAreMatcherImplBase { - protected: - explicit UnorderedElementsAreMatcherImplBase( - UnorderedMatcherRequire::Flags matcher_flags) - : match_flags_(matcher_flags) {} - - // A vector of matcher describers, one for each element matcher. - // Does not own the describers (and thus can be used only when the - // element matchers are alive). - typedef ::std::vector<const MatcherDescriberInterface*> MatcherDescriberVec; - - // Describes this UnorderedElementsAre matcher. - void DescribeToImpl(::std::ostream* os) const; - - // Describes the negation of this UnorderedElementsAre matcher. - void DescribeNegationToImpl(::std::ostream* os) const; - - bool VerifyMatchMatrix(const ::std::vector<std::string>& element_printouts, - const MatchMatrix& matrix, - MatchResultListener* listener) const; - - bool FindPairing(const MatchMatrix& matrix, - MatchResultListener* listener) const; - - MatcherDescriberVec& matcher_describers() { - return matcher_describers_; - } - - static Message Elements(size_t n) { - return Message() << n << " element" << (n == 1 ? "" : "s"); - } - - UnorderedMatcherRequire::Flags match_flags() const { return match_flags_; } - - private: - UnorderedMatcherRequire::Flags match_flags_; - MatcherDescriberVec matcher_describers_; - - GTEST_DISALLOW_ASSIGN_(UnorderedElementsAreMatcherImplBase); -}; - -// Implements UnorderedElementsAre, UnorderedElementsAreArray, IsSubsetOf, and -// IsSupersetOf. -template <typename Container> -class UnorderedElementsAreMatcherImpl - : public MatcherInterface<Container>, - public UnorderedElementsAreMatcherImplBase { - public: - typedef GTEST_REMOVE_REFERENCE_AND_CONST_(Container) RawContainer; - typedef internal::StlContainerView<RawContainer> View; - typedef typename View::type StlContainer; - typedef typename View::const_reference StlContainerReference; - typedef typename StlContainer::const_iterator StlContainerConstIterator; - typedef typename StlContainer::value_type Element; - - template <typename InputIter> - UnorderedElementsAreMatcherImpl(UnorderedMatcherRequire::Flags matcher_flags, - InputIter first, InputIter last) - : UnorderedElementsAreMatcherImplBase(matcher_flags) { - for (; first != last; ++first) { - matchers_.push_back(MatcherCast<const Element&>(*first)); - matcher_describers().push_back(matchers_.back().GetDescriber()); - } - } - - // Describes what this matcher does. - virtual void DescribeTo(::std::ostream* os) const { - return UnorderedElementsAreMatcherImplBase::DescribeToImpl(os); - } - - // Describes what the negation of this matcher does. - virtual void DescribeNegationTo(::std::ostream* os) const { - return UnorderedElementsAreMatcherImplBase::DescribeNegationToImpl(os); - } - - virtual bool MatchAndExplain(Container container, - MatchResultListener* listener) const { - StlContainerReference stl_container = View::ConstReference(container); - ::std::vector<std::string> element_printouts; - MatchMatrix matrix = - AnalyzeElements(stl_container.begin(), stl_container.end(), - &element_printouts, listener); - - if (matrix.LhsSize() == 0 && matrix.RhsSize() == 0) { - return true; - } - - if (match_flags() == UnorderedMatcherRequire::ExactMatch) { - if (matrix.LhsSize() != matrix.RhsSize()) { - // The element count doesn't match. If the container is empty, - // there's no need to explain anything as Google Mock already - // prints the empty container. Otherwise we just need to show - // how many elements there actually are. - if (matrix.LhsSize() != 0 && listener->IsInterested()) { - *listener << "which has " << Elements(matrix.LhsSize()); - } - return false; - } - } - - return VerifyMatchMatrix(element_printouts, matrix, listener) && - FindPairing(matrix, listener); - } - - private: - template <typename ElementIter> - MatchMatrix AnalyzeElements(ElementIter elem_first, ElementIter elem_last, - ::std::vector<std::string>* element_printouts, - MatchResultListener* listener) const { - element_printouts->clear(); - ::std::vector<char> did_match; - size_t num_elements = 0; - for (; elem_first != elem_last; ++num_elements, ++elem_first) { - if (listener->IsInterested()) { - element_printouts->push_back(PrintToString(*elem_first)); - } - for (size_t irhs = 0; irhs != matchers_.size(); ++irhs) { - did_match.push_back(Matches(matchers_[irhs])(*elem_first)); - } - } - - MatchMatrix matrix(num_elements, matchers_.size()); - ::std::vector<char>::const_iterator did_match_iter = did_match.begin(); - for (size_t ilhs = 0; ilhs != num_elements; ++ilhs) { - for (size_t irhs = 0; irhs != matchers_.size(); ++irhs) { - matrix.SetEdge(ilhs, irhs, *did_match_iter++ != 0); - } - } - return matrix; - } - - ::std::vector<Matcher<const Element&> > matchers_; - - GTEST_DISALLOW_ASSIGN_(UnorderedElementsAreMatcherImpl); -}; - -// Functor for use in TransformTuple. -// Performs MatcherCast<Target> on an input argument of any type. -template <typename Target> -struct CastAndAppendTransform { - template <typename Arg> - Matcher<Target> operator()(const Arg& a) const { - return MatcherCast<Target>(a); - } -}; - -// Implements UnorderedElementsAre. -template <typename MatcherTuple> -class UnorderedElementsAreMatcher { - public: - explicit UnorderedElementsAreMatcher(const MatcherTuple& args) - : matchers_(args) {} - - template <typename Container> - operator Matcher<Container>() const { - typedef GTEST_REMOVE_REFERENCE_AND_CONST_(Container) RawContainer; - typedef typename internal::StlContainerView<RawContainer>::type View; - typedef typename View::value_type Element; - typedef ::std::vector<Matcher<const Element&> > MatcherVec; - MatcherVec matchers; - matchers.reserve(::testing::tuple_size<MatcherTuple>::value); - TransformTupleValues(CastAndAppendTransform<const Element&>(), matchers_, - ::std::back_inserter(matchers)); - return MakeMatcher(new UnorderedElementsAreMatcherImpl<Container>( - UnorderedMatcherRequire::ExactMatch, matchers.begin(), matchers.end())); - } - - private: - const MatcherTuple matchers_; - GTEST_DISALLOW_ASSIGN_(UnorderedElementsAreMatcher); -}; - -// Implements ElementsAre. -template <typename MatcherTuple> -class ElementsAreMatcher { - public: - explicit ElementsAreMatcher(const MatcherTuple& args) : matchers_(args) {} - - template <typename Container> - operator Matcher<Container>() const { - GTEST_COMPILE_ASSERT_( - !IsHashTable<GTEST_REMOVE_REFERENCE_AND_CONST_(Container)>::value || - ::testing::tuple_size<MatcherTuple>::value < 2, - use_UnorderedElementsAre_with_hash_tables); - - typedef GTEST_REMOVE_REFERENCE_AND_CONST_(Container) RawContainer; - typedef typename internal::StlContainerView<RawContainer>::type View; - typedef typename View::value_type Element; - typedef ::std::vector<Matcher<const Element&> > MatcherVec; - MatcherVec matchers; - matchers.reserve(::testing::tuple_size<MatcherTuple>::value); - TransformTupleValues(CastAndAppendTransform<const Element&>(), matchers_, - ::std::back_inserter(matchers)); - return MakeMatcher(new ElementsAreMatcherImpl<Container>( - matchers.begin(), matchers.end())); - } - - private: - const MatcherTuple matchers_; - GTEST_DISALLOW_ASSIGN_(ElementsAreMatcher); -}; - -// Implements UnorderedElementsAreArray(), IsSubsetOf(), and IsSupersetOf(). -template <typename T> -class UnorderedElementsAreArrayMatcher { - public: - template <typename Iter> - UnorderedElementsAreArrayMatcher(UnorderedMatcherRequire::Flags match_flags, - Iter first, Iter last) - : match_flags_(match_flags), matchers_(first, last) {} - - template <typename Container> - operator Matcher<Container>() const { - return MakeMatcher(new UnorderedElementsAreMatcherImpl<Container>( - match_flags_, matchers_.begin(), matchers_.end())); - } - - private: - UnorderedMatcherRequire::Flags match_flags_; - ::std::vector<T> matchers_; - - GTEST_DISALLOW_ASSIGN_(UnorderedElementsAreArrayMatcher); -}; - -// Implements ElementsAreArray(). -template <typename T> -class ElementsAreArrayMatcher { - public: - template <typename Iter> - ElementsAreArrayMatcher(Iter first, Iter last) : matchers_(first, last) {} - - template <typename Container> - operator Matcher<Container>() const { - GTEST_COMPILE_ASSERT_( - !IsHashTable<GTEST_REMOVE_REFERENCE_AND_CONST_(Container)>::value, - use_UnorderedElementsAreArray_with_hash_tables); - - return MakeMatcher(new ElementsAreMatcherImpl<Container>( - matchers_.begin(), matchers_.end())); - } - - private: - const ::std::vector<T> matchers_; - - GTEST_DISALLOW_ASSIGN_(ElementsAreArrayMatcher); -}; - -// Given a 2-tuple matcher tm of type Tuple2Matcher and a value second -// of type Second, BoundSecondMatcher<Tuple2Matcher, Second>(tm, -// second) is a polymorphic matcher that matches a value x iff tm -// matches tuple (x, second). Useful for implementing -// UnorderedPointwise() in terms of UnorderedElementsAreArray(). -// -// BoundSecondMatcher is copyable and assignable, as we need to put -// instances of this class in a vector when implementing -// UnorderedPointwise(). -template <typename Tuple2Matcher, typename Second> -class BoundSecondMatcher { - public: - BoundSecondMatcher(const Tuple2Matcher& tm, const Second& second) - : tuple2_matcher_(tm), second_value_(second) {} - - template <typename T> - operator Matcher<T>() const { - return MakeMatcher(new Impl<T>(tuple2_matcher_, second_value_)); - } - - // We have to define this for UnorderedPointwise() to compile in - // C++98 mode, as it puts BoundSecondMatcher instances in a vector, - // which requires the elements to be assignable in C++98. The - // compiler cannot generate the operator= for us, as Tuple2Matcher - // and Second may not be assignable. - // - // However, this should never be called, so the implementation just - // need to assert. - void operator=(const BoundSecondMatcher& /*rhs*/) { - GTEST_LOG_(FATAL) << "BoundSecondMatcher should never be assigned."; - } - - private: - template <typename T> - class Impl : public MatcherInterface<T> { - public: - typedef ::testing::tuple<T, Second> ArgTuple; - - Impl(const Tuple2Matcher& tm, const Second& second) - : mono_tuple2_matcher_(SafeMatcherCast<const ArgTuple&>(tm)), - second_value_(second) {} - - virtual void DescribeTo(::std::ostream* os) const { - *os << "and "; - UniversalPrint(second_value_, os); - *os << " "; - mono_tuple2_matcher_.DescribeTo(os); - } - - virtual bool MatchAndExplain(T x, MatchResultListener* listener) const { - return mono_tuple2_matcher_.MatchAndExplain(ArgTuple(x, second_value_), - listener); - } - - private: - const Matcher<const ArgTuple&> mono_tuple2_matcher_; - const Second second_value_; - - GTEST_DISALLOW_ASSIGN_(Impl); - }; - - const Tuple2Matcher tuple2_matcher_; - const Second second_value_; -}; - -// Given a 2-tuple matcher tm and a value second, -// MatcherBindSecond(tm, second) returns a matcher that matches a -// value x iff tm matches tuple (x, second). Useful for implementing -// UnorderedPointwise() in terms of UnorderedElementsAreArray(). -template <typename Tuple2Matcher, typename Second> -BoundSecondMatcher<Tuple2Matcher, Second> MatcherBindSecond( - const Tuple2Matcher& tm, const Second& second) { - return BoundSecondMatcher<Tuple2Matcher, Second>(tm, second); -} - -// Returns the description for a matcher defined using the MATCHER*() -// macro where the user-supplied description string is "", if -// 'negation' is false; otherwise returns the description of the -// negation of the matcher. 'param_values' contains a list of strings -// that are the print-out of the matcher's parameters. -GTEST_API_ std::string FormatMatcherDescription(bool negation, - const char* matcher_name, - const Strings& param_values); - -// Implements a matcher that checks the value of a optional<> type variable. -template <typename ValueMatcher> -class OptionalMatcher { - public: - explicit OptionalMatcher(const ValueMatcher& value_matcher) - : value_matcher_(value_matcher) {} - - template <typename Optional> - operator Matcher<Optional>() const { - return MakeMatcher(new Impl<Optional>(value_matcher_)); - } - - template <typename Optional> - class Impl : public MatcherInterface<Optional> { - public: - typedef GTEST_REMOVE_REFERENCE_AND_CONST_(Optional) OptionalView; - typedef typename OptionalView::value_type ValueType; - explicit Impl(const ValueMatcher& value_matcher) - : value_matcher_(MatcherCast<ValueType>(value_matcher)) {} - - virtual void DescribeTo(::std::ostream* os) const { - *os << "value "; - value_matcher_.DescribeTo(os); - } - - virtual void DescribeNegationTo(::std::ostream* os) const { - *os << "value "; - value_matcher_.DescribeNegationTo(os); - } - - virtual bool MatchAndExplain(Optional optional, - MatchResultListener* listener) const { - if (!optional) { - *listener << "which is not engaged"; - return false; - } - const ValueType& value = *optional; - StringMatchResultListener value_listener; - const bool match = value_matcher_.MatchAndExplain(value, &value_listener); - *listener << "whose value " << PrintToString(value) - << (match ? " matches" : " doesn't match"); - PrintIfNotEmpty(value_listener.str(), listener->stream()); - return match; - } - - private: - const Matcher<ValueType> value_matcher_; - GTEST_DISALLOW_ASSIGN_(Impl); - }; - - private: - const ValueMatcher value_matcher_; - GTEST_DISALLOW_ASSIGN_(OptionalMatcher); -}; - -namespace variant_matcher { -// Overloads to allow VariantMatcher to do proper ADL lookup. -template <typename T> -void holds_alternative() {} -template <typename T> -void get() {} - -// Implements a matcher that checks the value of a variant<> type variable. -template <typename T> -class VariantMatcher { - public: - explicit VariantMatcher(::testing::Matcher<const T&> matcher) - : matcher_(internal::move(matcher)) {} - - template <typename Variant> - bool MatchAndExplain(const Variant& value, - ::testing::MatchResultListener* listener) const { - if (!listener->IsInterested()) { - return holds_alternative<T>(value) && matcher_.Matches(get<T>(value)); - } - - if (!holds_alternative<T>(value)) { - *listener << "whose value is not of type '" << GetTypeName() << "'"; - return false; - } - - const T& elem = get<T>(value); - StringMatchResultListener elem_listener; - const bool match = matcher_.MatchAndExplain(elem, &elem_listener); - *listener << "whose value " << PrintToString(elem) - << (match ? " matches" : " doesn't match"); - PrintIfNotEmpty(elem_listener.str(), listener->stream()); - return match; - } - - void DescribeTo(std::ostream* os) const { - *os << "is a variant<> with value of type '" << GetTypeName() - << "' and the value "; - matcher_.DescribeTo(os); - } - - void DescribeNegationTo(std::ostream* os) const { - *os << "is a variant<> with value of type other than '" << GetTypeName() - << "' or the value "; - matcher_.DescribeNegationTo(os); - } - - private: - static std::string GetTypeName() { -#if GTEST_HAS_RTTI - GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_( - return internal::GetTypeName<T>()); -#endif - return "the element type"; - } - - const ::testing::Matcher<const T&> matcher_; -}; - -} // namespace variant_matcher - -namespace any_cast_matcher { - -// Overloads to allow AnyCastMatcher to do proper ADL lookup. -template <typename T> -void any_cast() {} - -// Implements a matcher that any_casts the value. -template <typename T> -class AnyCastMatcher { - public: - explicit AnyCastMatcher(const ::testing::Matcher<const T&>& matcher) - : matcher_(matcher) {} - - template <typename AnyType> - bool MatchAndExplain(const AnyType& value, - ::testing::MatchResultListener* listener) const { - if (!listener->IsInterested()) { - const T* ptr = any_cast<T>(&value); - return ptr != NULL && matcher_.Matches(*ptr); - } - - const T* elem = any_cast<T>(&value); - if (elem == NULL) { - *listener << "whose value is not of type '" << GetTypeName() << "'"; - return false; - } - - StringMatchResultListener elem_listener; - const bool match = matcher_.MatchAndExplain(*elem, &elem_listener); - *listener << "whose value " << PrintToString(*elem) - << (match ? " matches" : " doesn't match"); - PrintIfNotEmpty(elem_listener.str(), listener->stream()); - return match; - } - - void DescribeTo(std::ostream* os) const { - *os << "is an 'any' type with value of type '" << GetTypeName() - << "' and the value "; - matcher_.DescribeTo(os); - } - - void DescribeNegationTo(std::ostream* os) const { - *os << "is an 'any' type with value of type other than '" << GetTypeName() - << "' or the value "; - matcher_.DescribeNegationTo(os); - } - - private: - static std::string GetTypeName() { -#if GTEST_HAS_RTTI - GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_( - return internal::GetTypeName<T>()); -#endif - return "the element type"; - } - - const ::testing::Matcher<const T&> matcher_; -}; - -} // namespace any_cast_matcher -} // namespace internal - -// ElementsAreArray(iterator_first, iterator_last) -// ElementsAreArray(pointer, count) -// ElementsAreArray(array) -// ElementsAreArray(container) -// ElementsAreArray({ e1, e2, ..., en }) -// -// The ElementsAreArray() functions are like ElementsAre(...), except -// that they are given a homogeneous sequence rather than taking each -// element as a function argument. The sequence can be specified as an -// array, a pointer and count, a vector, an initializer list, or an -// STL iterator range. In each of these cases, the underlying sequence -// can be either a sequence of values or a sequence of matchers. -// -// All forms of ElementsAreArray() make a copy of the input matcher sequence. - -template <typename Iter> -inline internal::ElementsAreArrayMatcher< - typename ::std::iterator_traits<Iter>::value_type> -ElementsAreArray(Iter first, Iter last) { - typedef typename ::std::iterator_traits<Iter>::value_type T; - return internal::ElementsAreArrayMatcher<T>(first, last); -} - -template <typename T> -inline internal::ElementsAreArrayMatcher<T> ElementsAreArray( - const T* pointer, size_t count) { - return ElementsAreArray(pointer, pointer + count); -} - -template <typename T, size_t N> -inline internal::ElementsAreArrayMatcher<T> ElementsAreArray( - const T (&array)[N]) { - return ElementsAreArray(array, N); -} - -template <typename Container> -inline internal::ElementsAreArrayMatcher<typename Container::value_type> -ElementsAreArray(const Container& container) { - return ElementsAreArray(container.begin(), container.end()); -} - -#if GTEST_HAS_STD_INITIALIZER_LIST_ -template <typename T> -inline internal::ElementsAreArrayMatcher<T> -ElementsAreArray(::std::initializer_list<T> xs) { - return ElementsAreArray(xs.begin(), xs.end()); -} -#endif - -// UnorderedElementsAreArray(iterator_first, iterator_last) -// UnorderedElementsAreArray(pointer, count) -// UnorderedElementsAreArray(array) -// UnorderedElementsAreArray(container) -// UnorderedElementsAreArray({ e1, e2, ..., en }) -// -// UnorderedElementsAreArray() verifies that a bijective mapping onto a -// collection of matchers exists. -// -// The matchers can be specified as an array, a pointer and count, a container, -// an initializer list, or an STL iterator range. In each of these cases, the -// underlying matchers can be either values or matchers. - -template <typename Iter> -inline internal::UnorderedElementsAreArrayMatcher< - typename ::std::iterator_traits<Iter>::value_type> -UnorderedElementsAreArray(Iter first, Iter last) { - typedef typename ::std::iterator_traits<Iter>::value_type T; - return internal::UnorderedElementsAreArrayMatcher<T>( - internal::UnorderedMatcherRequire::ExactMatch, first, last); -} - -template <typename T> -inline internal::UnorderedElementsAreArrayMatcher<T> -UnorderedElementsAreArray(const T* pointer, size_t count) { - return UnorderedElementsAreArray(pointer, pointer + count); -} - -template <typename T, size_t N> -inline internal::UnorderedElementsAreArrayMatcher<T> -UnorderedElementsAreArray(const T (&array)[N]) { - return UnorderedElementsAreArray(array, N); -} - -template <typename Container> -inline internal::UnorderedElementsAreArrayMatcher< - typename Container::value_type> -UnorderedElementsAreArray(const Container& container) { - return UnorderedElementsAreArray(container.begin(), container.end()); -} - -#if GTEST_HAS_STD_INITIALIZER_LIST_ -template <typename T> -inline internal::UnorderedElementsAreArrayMatcher<T> -UnorderedElementsAreArray(::std::initializer_list<T> xs) { - return UnorderedElementsAreArray(xs.begin(), xs.end()); -} -#endif - -// _ is a matcher that matches anything of any type. -// -// This definition is fine as: -// -// 1. The C++ standard permits using the name _ in a namespace that -// is not the global namespace or ::std. -// 2. The AnythingMatcher class has no data member or constructor, -// so it's OK to create global variables of this type. -// 3. c-style has approved of using _ in this case. -const internal::AnythingMatcher _ = {}; -// Creates a matcher that matches any value of the given type T. -template <typename T> -inline Matcher<T> A() { - return Matcher<T>(new internal::AnyMatcherImpl<T>()); -} - -// Creates a matcher that matches any value of the given type T. -template <typename T> -inline Matcher<T> An() { return A<T>(); } - -// Creates a polymorphic matcher that matches anything equal to x. -// Note: if the parameter of Eq() were declared as const T&, Eq("foo") -// wouldn't compile. -template <typename T> -inline internal::EqMatcher<T> Eq(T x) { return internal::EqMatcher<T>(x); } - -// Constructs a Matcher<T> from a 'value' of type T. The constructed -// matcher matches any value that's equal to 'value'. -template <typename T> -Matcher<T>::Matcher(T value) { *this = Eq(value); } - -template <typename T, typename M> -Matcher<T> internal::MatcherCastImpl<T, M>::CastImpl( - const M& value, - internal::BooleanConstant<false> /* convertible_to_matcher */, - internal::BooleanConstant<false> /* convertible_to_T */) { - return Eq(value); -} - -// Creates a monomorphic matcher that matches anything with type Lhs -// and equal to rhs. A user may need to use this instead of Eq(...) -// in order to resolve an overloading ambiguity. -// -// TypedEq<T>(x) is just a convenient short-hand for Matcher<T>(Eq(x)) -// or Matcher<T>(x), but more readable than the latter. -// -// We could define similar monomorphic matchers for other comparison -// operations (e.g. TypedLt, TypedGe, and etc), but decided not to do -// it yet as those are used much less than Eq() in practice. A user -// can always write Matcher<T>(Lt(5)) to be explicit about the type, -// for example. -template <typename Lhs, typename Rhs> -inline Matcher<Lhs> TypedEq(const Rhs& rhs) { return Eq(rhs); } - -// Creates a polymorphic matcher that matches anything >= x. -template <typename Rhs> -inline internal::GeMatcher<Rhs> Ge(Rhs x) { - return internal::GeMatcher<Rhs>(x); -} - -// Creates a polymorphic matcher that matches anything > x. -template <typename Rhs> -inline internal::GtMatcher<Rhs> Gt(Rhs x) { - return internal::GtMatcher<Rhs>(x); -} - -// Creates a polymorphic matcher that matches anything <= x. -template <typename Rhs> -inline internal::LeMatcher<Rhs> Le(Rhs x) { - return internal::LeMatcher<Rhs>(x); -} - -// Creates a polymorphic matcher that matches anything < x. -template <typename Rhs> -inline internal::LtMatcher<Rhs> Lt(Rhs x) { - return internal::LtMatcher<Rhs>(x); -} - -// Creates a polymorphic matcher that matches anything != x. -template <typename Rhs> -inline internal::NeMatcher<Rhs> Ne(Rhs x) { - return internal::NeMatcher<Rhs>(x); -} - -// Creates a polymorphic matcher that matches any NULL pointer. -inline PolymorphicMatcher<internal::IsNullMatcher > IsNull() { - return MakePolymorphicMatcher(internal::IsNullMatcher()); -} - -// Creates a polymorphic matcher that matches any non-NULL pointer. -// This is convenient as Not(NULL) doesn't compile (the compiler -// thinks that that expression is comparing a pointer with an integer). -inline PolymorphicMatcher<internal::NotNullMatcher > NotNull() { - return MakePolymorphicMatcher(internal::NotNullMatcher()); -} - -// Creates a polymorphic matcher that matches any argument that -// references variable x. -template <typename T> -inline internal::RefMatcher<T&> Ref(T& x) { // NOLINT - return internal::RefMatcher<T&>(x); -} - -// Creates a matcher that matches any double argument approximately -// equal to rhs, where two NANs are considered unequal. -inline internal::FloatingEqMatcher<double> DoubleEq(double rhs) { - return internal::FloatingEqMatcher<double>(rhs, false); -} - -// Creates a matcher that matches any double argument approximately -// equal to rhs, including NaN values when rhs is NaN. -inline internal::FloatingEqMatcher<double> NanSensitiveDoubleEq(double rhs) { - return internal::FloatingEqMatcher<double>(rhs, true); -} - -// Creates a matcher that matches any double argument approximately equal to -// rhs, up to the specified max absolute error bound, where two NANs are -// considered unequal. The max absolute error bound must be non-negative. -inline internal::FloatingEqMatcher<double> DoubleNear( - double rhs, double max_abs_error) { - return internal::FloatingEqMatcher<double>(rhs, false, max_abs_error); -} - -// Creates a matcher that matches any double argument approximately equal to -// rhs, up to the specified max absolute error bound, including NaN values when -// rhs is NaN. The max absolute error bound must be non-negative. -inline internal::FloatingEqMatcher<double> NanSensitiveDoubleNear( - double rhs, double max_abs_error) { - return internal::FloatingEqMatcher<double>(rhs, true, max_abs_error); -} - -// Creates a matcher that matches any float argument approximately -// equal to rhs, where two NANs are considered unequal. -inline internal::FloatingEqMatcher<float> FloatEq(float rhs) { - return internal::FloatingEqMatcher<float>(rhs, false); -} - -// Creates a matcher that matches any float argument approximately -// equal to rhs, including NaN values when rhs is NaN. -inline internal::FloatingEqMatcher<float> NanSensitiveFloatEq(float rhs) { - return internal::FloatingEqMatcher<float>(rhs, true); -} - -// Creates a matcher that matches any float argument approximately equal to -// rhs, up to the specified max absolute error bound, where two NANs are -// considered unequal. The max absolute error bound must be non-negative. -inline internal::FloatingEqMatcher<float> FloatNear( - float rhs, float max_abs_error) { - return internal::FloatingEqMatcher<float>(rhs, false, max_abs_error); -} - -// Creates a matcher that matches any float argument approximately equal to -// rhs, up to the specified max absolute error bound, including NaN values when -// rhs is NaN. The max absolute error bound must be non-negative. -inline internal::FloatingEqMatcher<float> NanSensitiveFloatNear( - float rhs, float max_abs_error) { - return internal::FloatingEqMatcher<float>(rhs, true, max_abs_error); -} - -// Creates a matcher that matches a pointer (raw or smart) that points -// to a value that matches inner_matcher. -template <typename InnerMatcher> -inline internal::PointeeMatcher<InnerMatcher> Pointee( - const InnerMatcher& inner_matcher) { - return internal::PointeeMatcher<InnerMatcher>(inner_matcher); -} - -#if GTEST_HAS_RTTI -// Creates a matcher that matches a pointer or reference that matches -// inner_matcher when dynamic_cast<To> is applied. -// The result of dynamic_cast<To> is forwarded to the inner matcher. -// If To is a pointer and the cast fails, the inner matcher will receive NULL. -// If To is a reference and the cast fails, this matcher returns false -// immediately. -template <typename To> -inline PolymorphicMatcher<internal::WhenDynamicCastToMatcher<To> > -WhenDynamicCastTo(const Matcher<To>& inner_matcher) { - return MakePolymorphicMatcher( - internal::WhenDynamicCastToMatcher<To>(inner_matcher)); -} -#endif // GTEST_HAS_RTTI - -// Creates a matcher that matches an object whose given field matches -// 'matcher'. For example, -// Field(&Foo::number, Ge(5)) -// matches a Foo object x iff x.number >= 5. -template <typename Class, typename FieldType, typename FieldMatcher> -inline PolymorphicMatcher< - internal::FieldMatcher<Class, FieldType> > Field( - FieldType Class::*field, const FieldMatcher& matcher) { - return MakePolymorphicMatcher( - internal::FieldMatcher<Class, FieldType>( - field, MatcherCast<const FieldType&>(matcher))); - // The call to MatcherCast() is required for supporting inner - // matchers of compatible types. For example, it allows - // Field(&Foo::bar, m) - // to compile where bar is an int32 and m is a matcher for int64. -} - -// Same as Field() but also takes the name of the field to provide better error -// messages. -template <typename Class, typename FieldType, typename FieldMatcher> -inline PolymorphicMatcher<internal::FieldMatcher<Class, FieldType> > Field( - const std::string& field_name, FieldType Class::*field, - const FieldMatcher& matcher) { - return MakePolymorphicMatcher(internal::FieldMatcher<Class, FieldType>( - field_name, field, MatcherCast<const FieldType&>(matcher))); -} - -// Creates a matcher that matches an object whose given property -// matches 'matcher'. For example, -// Property(&Foo::str, StartsWith("hi")) -// matches a Foo object x iff x.str() starts with "hi". -template <typename Class, typename PropertyType, typename PropertyMatcher> -inline PolymorphicMatcher<internal::PropertyMatcher< - Class, PropertyType, PropertyType (Class::*)() const> > -Property(PropertyType (Class::*property)() const, - const PropertyMatcher& matcher) { - return MakePolymorphicMatcher( - internal::PropertyMatcher<Class, PropertyType, - PropertyType (Class::*)() const>( - property, - MatcherCast<GTEST_REFERENCE_TO_CONST_(PropertyType)>(matcher))); - // The call to MatcherCast() is required for supporting inner - // matchers of compatible types. For example, it allows - // Property(&Foo::bar, m) - // to compile where bar() returns an int32 and m is a matcher for int64. -} - -// Same as Property() above, but also takes the name of the property to provide -// better error messages. -template <typename Class, typename PropertyType, typename PropertyMatcher> -inline PolymorphicMatcher<internal::PropertyMatcher< - Class, PropertyType, PropertyType (Class::*)() const> > -Property(const std::string& property_name, - PropertyType (Class::*property)() const, - const PropertyMatcher& matcher) { - return MakePolymorphicMatcher( - internal::PropertyMatcher<Class, PropertyType, - PropertyType (Class::*)() const>( - property_name, property, - MatcherCast<GTEST_REFERENCE_TO_CONST_(PropertyType)>(matcher))); -} - -#if GTEST_LANG_CXX11 -// The same as above but for reference-qualified member functions. -template <typename Class, typename PropertyType, typename PropertyMatcher> -inline PolymorphicMatcher<internal::PropertyMatcher< - Class, PropertyType, PropertyType (Class::*)() const &> > -Property(PropertyType (Class::*property)() const &, - const PropertyMatcher& matcher) { - return MakePolymorphicMatcher( - internal::PropertyMatcher<Class, PropertyType, - PropertyType (Class::*)() const &>( - property, - MatcherCast<GTEST_REFERENCE_TO_CONST_(PropertyType)>(matcher))); -} -#endif - -// Creates a matcher that matches an object iff the result of applying -// a callable to x matches 'matcher'. -// For example, -// ResultOf(f, StartsWith("hi")) -// matches a Foo object x iff f(x) starts with "hi". -// callable parameter can be a function, function pointer, or a functor. -// Callable has to satisfy the following conditions: -// * It is required to keep no state affecting the results of -// the calls on it and make no assumptions about how many calls -// will be made. Any state it keeps must be protected from the -// concurrent access. -// * If it is a function object, it has to define type result_type. -// We recommend deriving your functor classes from std::unary_function. -// -template <typename Callable, typename ResultOfMatcher> -internal::ResultOfMatcher<Callable> ResultOf( - Callable callable, const ResultOfMatcher& matcher) { - return internal::ResultOfMatcher<Callable>( - callable, - MatcherCast<typename internal::CallableTraits<Callable>::ResultType>( - matcher)); - // The call to MatcherCast() is required for supporting inner - // matchers of compatible types. For example, it allows - // ResultOf(Function, m) - // to compile where Function() returns an int32 and m is a matcher for int64. -} - -// String matchers. - -// Matches a string equal to str. -inline PolymorphicMatcher<internal::StrEqualityMatcher<std::string> > StrEq( - const std::string& str) { - return MakePolymorphicMatcher( - internal::StrEqualityMatcher<std::string>(str, true, true)); -} - -// Matches a string not equal to str. -inline PolymorphicMatcher<internal::StrEqualityMatcher<std::string> > StrNe( - const std::string& str) { - return MakePolymorphicMatcher( - internal::StrEqualityMatcher<std::string>(str, false, true)); -} - -// Matches a string equal to str, ignoring case. -inline PolymorphicMatcher<internal::StrEqualityMatcher<std::string> > StrCaseEq( - const std::string& str) { - return MakePolymorphicMatcher( - internal::StrEqualityMatcher<std::string>(str, true, false)); -} - -// Matches a string not equal to str, ignoring case. -inline PolymorphicMatcher<internal::StrEqualityMatcher<std::string> > StrCaseNe( - const std::string& str) { - return MakePolymorphicMatcher( - internal::StrEqualityMatcher<std::string>(str, false, false)); -} - -// Creates a matcher that matches any string, std::string, or C string -// that contains the given substring. -inline PolymorphicMatcher<internal::HasSubstrMatcher<std::string> > HasSubstr( - const std::string& substring) { - return MakePolymorphicMatcher( - internal::HasSubstrMatcher<std::string>(substring)); -} - -// Matches a string that starts with 'prefix' (case-sensitive). -inline PolymorphicMatcher<internal::StartsWithMatcher<std::string> > StartsWith( - const std::string& prefix) { - return MakePolymorphicMatcher( - internal::StartsWithMatcher<std::string>(prefix)); -} - -// Matches a string that ends with 'suffix' (case-sensitive). -inline PolymorphicMatcher<internal::EndsWithMatcher<std::string> > EndsWith( - const std::string& suffix) { - return MakePolymorphicMatcher(internal::EndsWithMatcher<std::string>(suffix)); -} - -// Matches a string that fully matches regular expression 'regex'. -// The matcher takes ownership of 'regex'. -inline PolymorphicMatcher<internal::MatchesRegexMatcher> MatchesRegex( - const internal::RE* regex) { - return MakePolymorphicMatcher(internal::MatchesRegexMatcher(regex, true)); -} -inline PolymorphicMatcher<internal::MatchesRegexMatcher> MatchesRegex( - const std::string& regex) { - return MatchesRegex(new internal::RE(regex)); -} - -// Matches a string that contains regular expression 'regex'. -// The matcher takes ownership of 'regex'. -inline PolymorphicMatcher<internal::MatchesRegexMatcher> ContainsRegex( - const internal::RE* regex) { - return MakePolymorphicMatcher(internal::MatchesRegexMatcher(regex, false)); -} -inline PolymorphicMatcher<internal::MatchesRegexMatcher> ContainsRegex( - const std::string& regex) { - return ContainsRegex(new internal::RE(regex)); -} - -#if GTEST_HAS_GLOBAL_WSTRING || GTEST_HAS_STD_WSTRING -// Wide string matchers. - -// Matches a string equal to str. -inline PolymorphicMatcher<internal::StrEqualityMatcher<std::wstring> > StrEq( - const std::wstring& str) { - return MakePolymorphicMatcher( - internal::StrEqualityMatcher<std::wstring>(str, true, true)); -} - -// Matches a string not equal to str. -inline PolymorphicMatcher<internal::StrEqualityMatcher<std::wstring> > StrNe( - const std::wstring& str) { - return MakePolymorphicMatcher( - internal::StrEqualityMatcher<std::wstring>(str, false, true)); -} - -// Matches a string equal to str, ignoring case. -inline PolymorphicMatcher<internal::StrEqualityMatcher<std::wstring> > -StrCaseEq(const std::wstring& str) { - return MakePolymorphicMatcher( - internal::StrEqualityMatcher<std::wstring>(str, true, false)); -} - -// Matches a string not equal to str, ignoring case. -inline PolymorphicMatcher<internal::StrEqualityMatcher<std::wstring> > -StrCaseNe(const std::wstring& str) { - return MakePolymorphicMatcher( - internal::StrEqualityMatcher<std::wstring>(str, false, false)); -} - -// Creates a matcher that matches any ::wstring, std::wstring, or C wide string -// that contains the given substring. -inline PolymorphicMatcher<internal::HasSubstrMatcher<std::wstring> > HasSubstr( - const std::wstring& substring) { - return MakePolymorphicMatcher( - internal::HasSubstrMatcher<std::wstring>(substring)); -} - -// Matches a string that starts with 'prefix' (case-sensitive). -inline PolymorphicMatcher<internal::StartsWithMatcher<std::wstring> > -StartsWith(const std::wstring& prefix) { - return MakePolymorphicMatcher( - internal::StartsWithMatcher<std::wstring>(prefix)); -} - -// Matches a string that ends with 'suffix' (case-sensitive). -inline PolymorphicMatcher<internal::EndsWithMatcher<std::wstring> > EndsWith( - const std::wstring& suffix) { - return MakePolymorphicMatcher( - internal::EndsWithMatcher<std::wstring>(suffix)); -} - -#endif // GTEST_HAS_GLOBAL_WSTRING || GTEST_HAS_STD_WSTRING - -// Creates a polymorphic matcher that matches a 2-tuple where the -// first field == the second field. -inline internal::Eq2Matcher Eq() { return internal::Eq2Matcher(); } - -// Creates a polymorphic matcher that matches a 2-tuple where the -// first field >= the second field. -inline internal::Ge2Matcher Ge() { return internal::Ge2Matcher(); } - -// Creates a polymorphic matcher that matches a 2-tuple where the -// first field > the second field. -inline internal::Gt2Matcher Gt() { return internal::Gt2Matcher(); } - -// Creates a polymorphic matcher that matches a 2-tuple where the -// first field <= the second field. -inline internal::Le2Matcher Le() { return internal::Le2Matcher(); } - -// Creates a polymorphic matcher that matches a 2-tuple where the -// first field < the second field. -inline internal::Lt2Matcher Lt() { return internal::Lt2Matcher(); } - -// Creates a polymorphic matcher that matches a 2-tuple where the -// first field != the second field. -inline internal::Ne2Matcher Ne() { return internal::Ne2Matcher(); } - -// Creates a polymorphic matcher that matches a 2-tuple where -// FloatEq(first field) matches the second field. -inline internal::FloatingEq2Matcher<float> FloatEq() { - return internal::FloatingEq2Matcher<float>(); -} - -// Creates a polymorphic matcher that matches a 2-tuple where -// DoubleEq(first field) matches the second field. -inline internal::FloatingEq2Matcher<double> DoubleEq() { - return internal::FloatingEq2Matcher<double>(); -} - -// Creates a polymorphic matcher that matches a 2-tuple where -// FloatEq(first field) matches the second field with NaN equality. -inline internal::FloatingEq2Matcher<float> NanSensitiveFloatEq() { - return internal::FloatingEq2Matcher<float>(true); -} - -// Creates a polymorphic matcher that matches a 2-tuple where -// DoubleEq(first field) matches the second field with NaN equality. -inline internal::FloatingEq2Matcher<double> NanSensitiveDoubleEq() { - return internal::FloatingEq2Matcher<double>(true); -} - -// Creates a polymorphic matcher that matches a 2-tuple where -// FloatNear(first field, max_abs_error) matches the second field. -inline internal::FloatingEq2Matcher<float> FloatNear(float max_abs_error) { - return internal::FloatingEq2Matcher<float>(max_abs_error); -} - -// Creates a polymorphic matcher that matches a 2-tuple where -// DoubleNear(first field, max_abs_error) matches the second field. -inline internal::FloatingEq2Matcher<double> DoubleNear(double max_abs_error) { - return internal::FloatingEq2Matcher<double>(max_abs_error); -} - -// Creates a polymorphic matcher that matches a 2-tuple where -// FloatNear(first field, max_abs_error) matches the second field with NaN -// equality. -inline internal::FloatingEq2Matcher<float> NanSensitiveFloatNear( - float max_abs_error) { - return internal::FloatingEq2Matcher<float>(max_abs_error, true); -} - -// Creates a polymorphic matcher that matches a 2-tuple where -// DoubleNear(first field, max_abs_error) matches the second field with NaN -// equality. -inline internal::FloatingEq2Matcher<double> NanSensitiveDoubleNear( - double max_abs_error) { - return internal::FloatingEq2Matcher<double>(max_abs_error, true); -} - -// Creates a matcher that matches any value of type T that m doesn't -// match. -template <typename InnerMatcher> -inline internal::NotMatcher<InnerMatcher> Not(InnerMatcher m) { - return internal::NotMatcher<InnerMatcher>(m); -} - -// Returns a matcher that matches anything that satisfies the given -// predicate. The predicate can be any unary function or functor -// whose return type can be implicitly converted to bool. -template <typename Predicate> -inline PolymorphicMatcher<internal::TrulyMatcher<Predicate> > -Truly(Predicate pred) { - return MakePolymorphicMatcher(internal::TrulyMatcher<Predicate>(pred)); -} - -// Returns a matcher that matches the container size. The container must -// support both size() and size_type which all STL-like containers provide. -// Note that the parameter 'size' can be a value of type size_type as well as -// matcher. For instance: -// EXPECT_THAT(container, SizeIs(2)); // Checks container has 2 elements. -// EXPECT_THAT(container, SizeIs(Le(2)); // Checks container has at most 2. -template <typename SizeMatcher> -inline internal::SizeIsMatcher<SizeMatcher> -SizeIs(const SizeMatcher& size_matcher) { - return internal::SizeIsMatcher<SizeMatcher>(size_matcher); -} - -// Returns a matcher that matches the distance between the container's begin() -// iterator and its end() iterator, i.e. the size of the container. This matcher -// can be used instead of SizeIs with containers such as std::forward_list which -// do not implement size(). The container must provide const_iterator (with -// valid iterator_traits), begin() and end(). -template <typename DistanceMatcher> -inline internal::BeginEndDistanceIsMatcher<DistanceMatcher> -BeginEndDistanceIs(const DistanceMatcher& distance_matcher) { - return internal::BeginEndDistanceIsMatcher<DistanceMatcher>(distance_matcher); -} - -// Returns a matcher that matches an equal container. -// This matcher behaves like Eq(), but in the event of mismatch lists the -// values that are included in one container but not the other. (Duplicate -// values and order differences are not explained.) -template <typename Container> -inline PolymorphicMatcher<internal::ContainerEqMatcher< // NOLINT - GTEST_REMOVE_CONST_(Container)> > - ContainerEq(const Container& rhs) { - // This following line is for working around a bug in MSVC 8.0, - // which causes Container to be a const type sometimes. - typedef GTEST_REMOVE_CONST_(Container) RawContainer; - return MakePolymorphicMatcher( - internal::ContainerEqMatcher<RawContainer>(rhs)); -} - -// Returns a matcher that matches a container that, when sorted using -// the given comparator, matches container_matcher. -template <typename Comparator, typename ContainerMatcher> -inline internal::WhenSortedByMatcher<Comparator, ContainerMatcher> -WhenSortedBy(const Comparator& comparator, - const ContainerMatcher& container_matcher) { - return internal::WhenSortedByMatcher<Comparator, ContainerMatcher>( - comparator, container_matcher); -} - -// Returns a matcher that matches a container that, when sorted using -// the < operator, matches container_matcher. -template <typename ContainerMatcher> -inline internal::WhenSortedByMatcher<internal::LessComparator, ContainerMatcher> -WhenSorted(const ContainerMatcher& container_matcher) { - return - internal::WhenSortedByMatcher<internal::LessComparator, ContainerMatcher>( - internal::LessComparator(), container_matcher); -} - -// Matches an STL-style container or a native array that contains the -// same number of elements as in rhs, where its i-th element and rhs's -// i-th element (as a pair) satisfy the given pair matcher, for all i. -// TupleMatcher must be able to be safely cast to Matcher<tuple<const -// T1&, const T2&> >, where T1 and T2 are the types of elements in the -// LHS container and the RHS container respectively. -template <typename TupleMatcher, typename Container> -inline internal::PointwiseMatcher<TupleMatcher, - GTEST_REMOVE_CONST_(Container)> -Pointwise(const TupleMatcher& tuple_matcher, const Container& rhs) { - // This following line is for working around a bug in MSVC 8.0, - // which causes Container to be a const type sometimes (e.g. when - // rhs is a const int[]).. - typedef GTEST_REMOVE_CONST_(Container) RawContainer; - return internal::PointwiseMatcher<TupleMatcher, RawContainer>( - tuple_matcher, rhs); -} - -#if GTEST_HAS_STD_INITIALIZER_LIST_ - -// Supports the Pointwise(m, {a, b, c}) syntax. -template <typename TupleMatcher, typename T> -inline internal::PointwiseMatcher<TupleMatcher, std::vector<T> > Pointwise( - const TupleMatcher& tuple_matcher, std::initializer_list<T> rhs) { - return Pointwise(tuple_matcher, std::vector<T>(rhs)); -} - -#endif // GTEST_HAS_STD_INITIALIZER_LIST_ - -// UnorderedPointwise(pair_matcher, rhs) matches an STL-style -// container or a native array that contains the same number of -// elements as in rhs, where in some permutation of the container, its -// i-th element and rhs's i-th element (as a pair) satisfy the given -// pair matcher, for all i. Tuple2Matcher must be able to be safely -// cast to Matcher<tuple<const T1&, const T2&> >, where T1 and T2 are -// the types of elements in the LHS container and the RHS container -// respectively. -// -// This is like Pointwise(pair_matcher, rhs), except that the element -// order doesn't matter. -template <typename Tuple2Matcher, typename RhsContainer> -inline internal::UnorderedElementsAreArrayMatcher< - typename internal::BoundSecondMatcher< - Tuple2Matcher, typename internal::StlContainerView<GTEST_REMOVE_CONST_( - RhsContainer)>::type::value_type> > -UnorderedPointwise(const Tuple2Matcher& tuple2_matcher, - const RhsContainer& rhs_container) { - // This following line is for working around a bug in MSVC 8.0, - // which causes RhsContainer to be a const type sometimes (e.g. when - // rhs_container is a const int[]). - typedef GTEST_REMOVE_CONST_(RhsContainer) RawRhsContainer; - - // RhsView allows the same code to handle RhsContainer being a - // STL-style container and it being a native C-style array. - typedef typename internal::StlContainerView<RawRhsContainer> RhsView; - typedef typename RhsView::type RhsStlContainer; - typedef typename RhsStlContainer::value_type Second; - const RhsStlContainer& rhs_stl_container = - RhsView::ConstReference(rhs_container); - - // Create a matcher for each element in rhs_container. - ::std::vector<internal::BoundSecondMatcher<Tuple2Matcher, Second> > matchers; - for (typename RhsStlContainer::const_iterator it = rhs_stl_container.begin(); - it != rhs_stl_container.end(); ++it) { - matchers.push_back( - internal::MatcherBindSecond(tuple2_matcher, *it)); - } - - // Delegate the work to UnorderedElementsAreArray(). - return UnorderedElementsAreArray(matchers); -} - -#if GTEST_HAS_STD_INITIALIZER_LIST_ - -// Supports the UnorderedPointwise(m, {a, b, c}) syntax. -template <typename Tuple2Matcher, typename T> -inline internal::UnorderedElementsAreArrayMatcher< - typename internal::BoundSecondMatcher<Tuple2Matcher, T> > -UnorderedPointwise(const Tuple2Matcher& tuple2_matcher, - std::initializer_list<T> rhs) { - return UnorderedPointwise(tuple2_matcher, std::vector<T>(rhs)); -} - -#endif // GTEST_HAS_STD_INITIALIZER_LIST_ - -// Matches an STL-style container or a native array that contains at -// least one element matching the given value or matcher. -// -// Examples: -// ::std::set<int> page_ids; -// page_ids.insert(3); -// page_ids.insert(1); -// EXPECT_THAT(page_ids, Contains(1)); -// EXPECT_THAT(page_ids, Contains(Gt(2))); -// EXPECT_THAT(page_ids, Not(Contains(4))); -// -// ::std::map<int, size_t> page_lengths; -// page_lengths[1] = 100; -// EXPECT_THAT(page_lengths, -// Contains(::std::pair<const int, size_t>(1, 100))); -// -// const char* user_ids[] = { "joe", "mike", "tom" }; -// EXPECT_THAT(user_ids, Contains(Eq(::std::string("tom")))); -template <typename M> -inline internal::ContainsMatcher<M> Contains(M matcher) { - return internal::ContainsMatcher<M>(matcher); -} - -// IsSupersetOf(iterator_first, iterator_last) -// IsSupersetOf(pointer, count) -// IsSupersetOf(array) -// IsSupersetOf(container) -// IsSupersetOf({e1, e2, ..., en}) -// -// IsSupersetOf() verifies that a surjective partial mapping onto a collection -// of matchers exists. In other words, a container matches -// IsSupersetOf({e1, ..., en}) if and only if there is a permutation -// {y1, ..., yn} of some of the container's elements where y1 matches e1, -// ..., and yn matches en. Obviously, the size of the container must be >= n -// in order to have a match. Examples: -// -// - {1, 2, 3} matches IsSupersetOf({Ge(3), Ne(0)}), as 3 matches Ge(3) and -// 1 matches Ne(0). -// - {1, 2} doesn't match IsSupersetOf({Eq(1), Lt(2)}), even though 1 matches -// both Eq(1) and Lt(2). The reason is that different matchers must be used -// for elements in different slots of the container. -// - {1, 1, 2} matches IsSupersetOf({Eq(1), Lt(2)}), as (the first) 1 matches -// Eq(1) and (the second) 1 matches Lt(2). -// - {1, 2, 3} matches IsSupersetOf(Gt(1), Gt(1)), as 2 matches (the first) -// Gt(1) and 3 matches (the second) Gt(1). -// -// The matchers can be specified as an array, a pointer and count, a container, -// an initializer list, or an STL iterator range. In each of these cases, the -// underlying matchers can be either values or matchers. - -template <typename Iter> -inline internal::UnorderedElementsAreArrayMatcher< - typename ::std::iterator_traits<Iter>::value_type> -IsSupersetOf(Iter first, Iter last) { - typedef typename ::std::iterator_traits<Iter>::value_type T; - return internal::UnorderedElementsAreArrayMatcher<T>( - internal::UnorderedMatcherRequire::Superset, first, last); -} - -template <typename T> -inline internal::UnorderedElementsAreArrayMatcher<T> IsSupersetOf( - const T* pointer, size_t count) { - return IsSupersetOf(pointer, pointer + count); -} - -template <typename T, size_t N> -inline internal::UnorderedElementsAreArrayMatcher<T> IsSupersetOf( - const T (&array)[N]) { - return IsSupersetOf(array, N); -} - -template <typename Container> -inline internal::UnorderedElementsAreArrayMatcher< - typename Container::value_type> -IsSupersetOf(const Container& container) { - return IsSupersetOf(container.begin(), container.end()); -} - -#if GTEST_HAS_STD_INITIALIZER_LIST_ -template <typename T> -inline internal::UnorderedElementsAreArrayMatcher<T> IsSupersetOf( - ::std::initializer_list<T> xs) { - return IsSupersetOf(xs.begin(), xs.end()); -} -#endif - -// IsSubsetOf(iterator_first, iterator_last) -// IsSubsetOf(pointer, count) -// IsSubsetOf(array) -// IsSubsetOf(container) -// IsSubsetOf({e1, e2, ..., en}) -// -// IsSubsetOf() verifies that an injective mapping onto a collection of matchers -// exists. In other words, a container matches IsSubsetOf({e1, ..., en}) if and -// only if there is a subset of matchers {m1, ..., mk} which would match the -// container using UnorderedElementsAre. Obviously, the size of the container -// must be <= n in order to have a match. Examples: -// -// - {1} matches IsSubsetOf({Gt(0), Lt(0)}), as 1 matches Gt(0). -// - {1, -1} matches IsSubsetOf({Lt(0), Gt(0)}), as 1 matches Gt(0) and -1 -// matches Lt(0). -// - {1, 2} doesn't matches IsSubsetOf({Gt(0), Lt(0)}), even though 1 and 2 both -// match Gt(0). The reason is that different matchers must be used for -// elements in different slots of the container. -// -// The matchers can be specified as an array, a pointer and count, a container, -// an initializer list, or an STL iterator range. In each of these cases, the -// underlying matchers can be either values or matchers. - -template <typename Iter> -inline internal::UnorderedElementsAreArrayMatcher< - typename ::std::iterator_traits<Iter>::value_type> -IsSubsetOf(Iter first, Iter last) { - typedef typename ::std::iterator_traits<Iter>::value_type T; - return internal::UnorderedElementsAreArrayMatcher<T>( - internal::UnorderedMatcherRequire::Subset, first, last); -} - -template <typename T> -inline internal::UnorderedElementsAreArrayMatcher<T> IsSubsetOf( - const T* pointer, size_t count) { - return IsSubsetOf(pointer, pointer + count); -} - -template <typename T, size_t N> -inline internal::UnorderedElementsAreArrayMatcher<T> IsSubsetOf( - const T (&array)[N]) { - return IsSubsetOf(array, N); -} - -template <typename Container> -inline internal::UnorderedElementsAreArrayMatcher< - typename Container::value_type> -IsSubsetOf(const Container& container) { - return IsSubsetOf(container.begin(), container.end()); -} - -#if GTEST_HAS_STD_INITIALIZER_LIST_ -template <typename T> -inline internal::UnorderedElementsAreArrayMatcher<T> IsSubsetOf( - ::std::initializer_list<T> xs) { - return IsSubsetOf(xs.begin(), xs.end()); -} -#endif - -// Matches an STL-style container or a native array that contains only -// elements matching the given value or matcher. -// -// Each(m) is semantically equivalent to Not(Contains(Not(m))). Only -// the messages are different. -// -// Examples: -// ::std::set<int> page_ids; -// // Each(m) matches an empty container, regardless of what m is. -// EXPECT_THAT(page_ids, Each(Eq(1))); -// EXPECT_THAT(page_ids, Each(Eq(77))); -// -// page_ids.insert(3); -// EXPECT_THAT(page_ids, Each(Gt(0))); -// EXPECT_THAT(page_ids, Not(Each(Gt(4)))); -// page_ids.insert(1); -// EXPECT_THAT(page_ids, Not(Each(Lt(2)))); -// -// ::std::map<int, size_t> page_lengths; -// page_lengths[1] = 100; -// page_lengths[2] = 200; -// page_lengths[3] = 300; -// EXPECT_THAT(page_lengths, Not(Each(Pair(1, 100)))); -// EXPECT_THAT(page_lengths, Each(Key(Le(3)))); -// -// const char* user_ids[] = { "joe", "mike", "tom" }; -// EXPECT_THAT(user_ids, Not(Each(Eq(::std::string("tom"))))); -template <typename M> -inline internal::EachMatcher<M> Each(M matcher) { - return internal::EachMatcher<M>(matcher); -} - -// Key(inner_matcher) matches an std::pair whose 'first' field matches -// inner_matcher. For example, Contains(Key(Ge(5))) can be used to match an -// std::map that contains at least one element whose key is >= 5. -template <typename M> -inline internal::KeyMatcher<M> Key(M inner_matcher) { - return internal::KeyMatcher<M>(inner_matcher); -} - -// Pair(first_matcher, second_matcher) matches a std::pair whose 'first' field -// matches first_matcher and whose 'second' field matches second_matcher. For -// example, EXPECT_THAT(map_type, ElementsAre(Pair(Ge(5), "foo"))) can be used -// to match a std::map<int, string> that contains exactly one element whose key -// is >= 5 and whose value equals "foo". -template <typename FirstMatcher, typename SecondMatcher> -inline internal::PairMatcher<FirstMatcher, SecondMatcher> -Pair(FirstMatcher first_matcher, SecondMatcher second_matcher) { - return internal::PairMatcher<FirstMatcher, SecondMatcher>( - first_matcher, second_matcher); -} - -// Returns a predicate that is satisfied by anything that matches the -// given matcher. -template <typename M> -inline internal::MatcherAsPredicate<M> Matches(M matcher) { - return internal::MatcherAsPredicate<M>(matcher); -} - -// Returns true iff the value matches the matcher. -template <typename T, typename M> -inline bool Value(const T& value, M matcher) { - return testing::Matches(matcher)(value); -} - -// Matches the value against the given matcher and explains the match -// result to listener. -template <typename T, typename M> -inline bool ExplainMatchResult( - M matcher, const T& value, MatchResultListener* listener) { - return SafeMatcherCast<const T&>(matcher).MatchAndExplain(value, listener); -} - -// Returns a string representation of the given matcher. Useful for description -// strings of matchers defined using MATCHER_P* macros that accept matchers as -// their arguments. For example: -// -// MATCHER_P(XAndYThat, matcher, -// "X that " + DescribeMatcher<int>(matcher, negation) + -// " and Y that " + DescribeMatcher<double>(matcher, negation)) { -// return ExplainMatchResult(matcher, arg.x(), result_listener) && -// ExplainMatchResult(matcher, arg.y(), result_listener); -// } -template <typename T, typename M> -std::string DescribeMatcher(const M& matcher, bool negation = false) { - ::std::stringstream ss; - Matcher<T> monomorphic_matcher = SafeMatcherCast<T>(matcher); - if (negation) { - monomorphic_matcher.DescribeNegationTo(&ss); - } else { - monomorphic_matcher.DescribeTo(&ss); - } - return ss.str(); -} - -#if GTEST_LANG_CXX11 -// Define variadic matcher versions. They are overloaded in -// gmock-generated-matchers.h for the cases supported by pre C++11 compilers. -template <typename... Args> -internal::AllOfMatcher<Args...> AllOf(const Args&... matchers) { - return internal::AllOfMatcher<Args...>(matchers...); -} - -template <typename... Args> -internal::AnyOfMatcher<Args...> AnyOf(const Args&... matchers) { - return internal::AnyOfMatcher<Args...>(matchers...); -} - -template <typename... Args> -internal::ElementsAreMatcher<tuple<typename std::decay<const Args&>::type...>> -ElementsAre(const Args&... matchers) { - return internal::ElementsAreMatcher< - tuple<typename std::decay<const Args&>::type...>>( - make_tuple(matchers...)); -} - -template <typename... Args> -internal::UnorderedElementsAreMatcher< - tuple<typename std::decay<const Args&>::type...>> -UnorderedElementsAre(const Args&... matchers) { - return internal::UnorderedElementsAreMatcher< - tuple<typename std::decay<const Args&>::type...>>( - make_tuple(matchers...)); -} - -#endif // GTEST_LANG_CXX11 - -// AllArgs(m) is a synonym of m. This is useful in -// -// EXPECT_CALL(foo, Bar(_, _)).With(AllArgs(Eq())); -// -// which is easier to read than -// -// EXPECT_CALL(foo, Bar(_, _)).With(Eq()); -template <typename InnerMatcher> -inline InnerMatcher AllArgs(const InnerMatcher& matcher) { return matcher; } - -// Returns a matcher that matches the value of an optional<> type variable. -// The matcher implementation only uses '!arg' and requires that the optional<> -// type has a 'value_type' member type and that '*arg' is of type 'value_type' -// and is printable using 'PrintToString'. It is compatible with -// std::optional/std::experimental::optional. -// Note that to compare an optional type variable against nullopt you should -// use Eq(nullopt) and not Optional(Eq(nullopt)). The latter implies that the -// optional value contains an optional itself. -template <typename ValueMatcher> -inline internal::OptionalMatcher<ValueMatcher> Optional( - const ValueMatcher& value_matcher) { - return internal::OptionalMatcher<ValueMatcher>(value_matcher); -} - -// Returns a matcher that matches the value of a absl::any type variable. -template <typename T> -PolymorphicMatcher<internal::any_cast_matcher::AnyCastMatcher<T> > AnyWith( - const Matcher<const T&>& matcher) { - return MakePolymorphicMatcher( - internal::any_cast_matcher::AnyCastMatcher<T>(matcher)); -} - -// Returns a matcher that matches the value of a variant<> type variable. -// The matcher implementation uses ADL to find the holds_alternative and get -// functions. -// It is compatible with std::variant. -template <typename T> -PolymorphicMatcher<internal::variant_matcher::VariantMatcher<T> > VariantWith( - const Matcher<const T&>& matcher) { - return MakePolymorphicMatcher( - internal::variant_matcher::VariantMatcher<T>(matcher)); -} - -// These macros allow using matchers to check values in Google Test -// tests. ASSERT_THAT(value, matcher) and EXPECT_THAT(value, matcher) -// succeed iff the value matches the matcher. If the assertion fails, -// the value and the description of the matcher will be printed. -#define ASSERT_THAT(value, matcher) ASSERT_PRED_FORMAT1(\ - ::testing::internal::MakePredicateFormatterFromMatcher(matcher), value) -#define EXPECT_THAT(value, matcher) EXPECT_PRED_FORMAT1(\ - ::testing::internal::MakePredicateFormatterFromMatcher(matcher), value) - -} // namespace testing - -// Include any custom callback matchers added by the local installation. -// We must include this header at the end to make sure it can use the -// declarations from this file. -#include "gmock/internal/custom/gmock-matchers.h" - -#endif // GMOCK_INCLUDE_GMOCK_GMOCK_MATCHERS_H_ |