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Diffstat (limited to 'third_party/googletest/googlemock/include/gmock/gmock-spec-builders.h')
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1 files changed, 0 insertions, 1918 deletions
diff --git a/third_party/googletest/googlemock/include/gmock/gmock-spec-builders.h b/third_party/googletest/googlemock/include/gmock/gmock-spec-builders.h deleted file mode 100644 index cf1e7e2..0000000 --- a/third_party/googletest/googlemock/include/gmock/gmock-spec-builders.h +++ /dev/null @@ -1,1918 +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 the ON_CALL() and EXPECT_CALL() macros. -// -// A user can use the ON_CALL() macro to specify the default action of -// a mock method. The syntax is: -// -// ON_CALL(mock_object, Method(argument-matchers)) -// .With(multi-argument-matcher) -// .WillByDefault(action); -// -// where the .With() clause is optional. -// -// A user can use the EXPECT_CALL() macro to specify an expectation on -// a mock method. The syntax is: -// -// EXPECT_CALL(mock_object, Method(argument-matchers)) -// .With(multi-argument-matchers) -// .Times(cardinality) -// .InSequence(sequences) -// .After(expectations) -// .WillOnce(action) -// .WillRepeatedly(action) -// .RetiresOnSaturation(); -// -// where all clauses are optional, and .InSequence()/.After()/ -// .WillOnce() can appear any number of times. - -#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_SPEC_BUILDERS_H_ -#define GMOCK_INCLUDE_GMOCK_GMOCK_SPEC_BUILDERS_H_ - -#include <map> -#include <set> -#include <sstream> -#include <string> -#include <vector> -#include "gmock/gmock-actions.h" -#include "gmock/gmock-cardinalities.h" -#include "gmock/gmock-matchers.h" -#include "gmock/internal/gmock-internal-utils.h" -#include "gmock/internal/gmock-port.h" -#include "gtest/gtest.h" - -#if GTEST_HAS_EXCEPTIONS -# include <stdexcept> // NOLINT -#endif - -namespace testing { - -// An abstract handle of an expectation. -class Expectation; - -// A set of expectation handles. -class ExpectationSet; - -// Anything inside the 'internal' namespace IS INTERNAL IMPLEMENTATION -// and MUST NOT BE USED IN USER CODE!!! -namespace internal { - -// Implements a mock function. -template <typename F> class FunctionMocker; - -// Base class for expectations. -class ExpectationBase; - -// Implements an expectation. -template <typename F> class TypedExpectation; - -// Helper class for testing the Expectation class template. -class ExpectationTester; - -// Base class for function mockers. -template <typename F> class FunctionMockerBase; - -// Protects the mock object registry (in class Mock), all function -// mockers, and all expectations. -// -// The reason we don't use more fine-grained protection is: when a -// mock function Foo() is called, it needs to consult its expectations -// to see which one should be picked. If another thread is allowed to -// call a mock function (either Foo() or a different one) at the same -// time, it could affect the "retired" attributes of Foo()'s -// expectations when InSequence() is used, and thus affect which -// expectation gets picked. Therefore, we sequence all mock function -// calls to ensure the integrity of the mock objects' states. -GTEST_API_ GTEST_DECLARE_STATIC_MUTEX_(g_gmock_mutex); - -// Untyped base class for ActionResultHolder<R>. -class UntypedActionResultHolderBase; - -// Abstract base class of FunctionMockerBase. This is the -// type-agnostic part of the function mocker interface. Its pure -// virtual methods are implemented by FunctionMockerBase. -class GTEST_API_ UntypedFunctionMockerBase { - public: - UntypedFunctionMockerBase(); - virtual ~UntypedFunctionMockerBase(); - - // Verifies that all expectations on this mock function have been - // satisfied. Reports one or more Google Test non-fatal failures - // and returns false if not. - bool VerifyAndClearExpectationsLocked() - GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex); - - // Clears the ON_CALL()s set on this mock function. - virtual void ClearDefaultActionsLocked() - GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) = 0; - - // In all of the following Untyped* functions, it's the caller's - // responsibility to guarantee the correctness of the arguments' - // types. - - // Performs the default action with the given arguments and returns - // the action's result. The call description string will be used in - // the error message to describe the call in the case the default - // action fails. - // L = * - virtual UntypedActionResultHolderBase* UntypedPerformDefaultAction( - void* untyped_args, const std::string& call_description) const = 0; - - // Performs the given action with the given arguments and returns - // the action's result. - // L = * - virtual UntypedActionResultHolderBase* UntypedPerformAction( - const void* untyped_action, void* untyped_args) const = 0; - - // Writes a message that the call is uninteresting (i.e. neither - // explicitly expected nor explicitly unexpected) to the given - // ostream. - virtual void UntypedDescribeUninterestingCall( - const void* untyped_args, - ::std::ostream* os) const - GTEST_LOCK_EXCLUDED_(g_gmock_mutex) = 0; - - // Returns the expectation that matches the given function arguments - // (or NULL is there's no match); when a match is found, - // untyped_action is set to point to the action that should be - // performed (or NULL if the action is "do default"), and - // is_excessive is modified to indicate whether the call exceeds the - // expected number. - virtual const ExpectationBase* UntypedFindMatchingExpectation( - const void* untyped_args, - const void** untyped_action, bool* is_excessive, - ::std::ostream* what, ::std::ostream* why) - GTEST_LOCK_EXCLUDED_(g_gmock_mutex) = 0; - - // Prints the given function arguments to the ostream. - virtual void UntypedPrintArgs(const void* untyped_args, - ::std::ostream* os) const = 0; - - // Sets the mock object this mock method belongs to, and registers - // this information in the global mock registry. Will be called - // whenever an EXPECT_CALL() or ON_CALL() is executed on this mock - // method. - // TODO(wan@google.com): rename to SetAndRegisterOwner(). - void RegisterOwner(const void* mock_obj) - GTEST_LOCK_EXCLUDED_(g_gmock_mutex); - - // Sets the mock object this mock method belongs to, and sets the - // name of the mock function. Will be called upon each invocation - // of this mock function. - void SetOwnerAndName(const void* mock_obj, const char* name) - GTEST_LOCK_EXCLUDED_(g_gmock_mutex); - - // Returns the mock object this mock method belongs to. Must be - // called after RegisterOwner() or SetOwnerAndName() has been - // called. - const void* MockObject() const - GTEST_LOCK_EXCLUDED_(g_gmock_mutex); - - // Returns the name of this mock method. Must be called after - // SetOwnerAndName() has been called. - const char* Name() const - GTEST_LOCK_EXCLUDED_(g_gmock_mutex); - - // Returns the result of invoking this mock function with the given - // arguments. This function can be safely called from multiple - // threads concurrently. The caller is responsible for deleting the - // result. - UntypedActionResultHolderBase* UntypedInvokeWith(void* untyped_args) - GTEST_LOCK_EXCLUDED_(g_gmock_mutex); - - protected: - typedef std::vector<const void*> UntypedOnCallSpecs; - - typedef std::vector<internal::linked_ptr<ExpectationBase> > - UntypedExpectations; - - // Returns an Expectation object that references and co-owns exp, - // which must be an expectation on this mock function. - Expectation GetHandleOf(ExpectationBase* exp); - - // Address of the mock object this mock method belongs to. Only - // valid after this mock method has been called or - // ON_CALL/EXPECT_CALL has been invoked on it. - const void* mock_obj_; // Protected by g_gmock_mutex. - - // Name of the function being mocked. Only valid after this mock - // method has been called. - const char* name_; // Protected by g_gmock_mutex. - - // All default action specs for this function mocker. - UntypedOnCallSpecs untyped_on_call_specs_; - - // All expectations for this function mocker. - // - // It's undefined behavior to interleave expectations (EXPECT_CALLs - // or ON_CALLs) and mock function calls. Also, the order of - // expectations is important. Therefore it's a logic race condition - // to read/write untyped_expectations_ concurrently. In order for - // tools like tsan to catch concurrent read/write accesses to - // untyped_expectations, we deliberately leave accesses to it - // unprotected. - UntypedExpectations untyped_expectations_; -}; // class UntypedFunctionMockerBase - -// Untyped base class for OnCallSpec<F>. -class UntypedOnCallSpecBase { - public: - // The arguments are the location of the ON_CALL() statement. - UntypedOnCallSpecBase(const char* a_file, int a_line) - : file_(a_file), line_(a_line), last_clause_(kNone) {} - - // Where in the source file was the default action spec defined? - const char* file() const { return file_; } - int line() const { return line_; } - - protected: - // Gives each clause in the ON_CALL() statement a name. - enum Clause { - // Do not change the order of the enum members! The run-time - // syntax checking relies on it. - kNone, - kWith, - kWillByDefault - }; - - // Asserts that the ON_CALL() statement has a certain property. - void AssertSpecProperty(bool property, - const std::string& failure_message) const { - Assert(property, file_, line_, failure_message); - } - - // Expects that the ON_CALL() statement has a certain property. - void ExpectSpecProperty(bool property, - const std::string& failure_message) const { - Expect(property, file_, line_, failure_message); - } - - const char* file_; - int line_; - - // The last clause in the ON_CALL() statement as seen so far. - // Initially kNone and changes as the statement is parsed. - Clause last_clause_; -}; // class UntypedOnCallSpecBase - -// This template class implements an ON_CALL spec. -template <typename F> -class OnCallSpec : public UntypedOnCallSpecBase { - public: - typedef typename Function<F>::ArgumentTuple ArgumentTuple; - typedef typename Function<F>::ArgumentMatcherTuple ArgumentMatcherTuple; - - // Constructs an OnCallSpec object from the information inside - // the parenthesis of an ON_CALL() statement. - OnCallSpec(const char* a_file, int a_line, - const ArgumentMatcherTuple& matchers) - : UntypedOnCallSpecBase(a_file, a_line), - matchers_(matchers), - // By default, extra_matcher_ should match anything. However, - // we cannot initialize it with _ as that triggers a compiler - // bug in Symbian's C++ compiler (cannot decide between two - // overloaded constructors of Matcher<const ArgumentTuple&>). - extra_matcher_(A<const ArgumentTuple&>()) { - } - - // Implements the .With() clause. - OnCallSpec& With(const Matcher<const ArgumentTuple&>& m) { - // Makes sure this is called at most once. - ExpectSpecProperty(last_clause_ < kWith, - ".With() cannot appear " - "more than once in an ON_CALL()."); - last_clause_ = kWith; - - extra_matcher_ = m; - return *this; - } - - // Implements the .WillByDefault() clause. - OnCallSpec& WillByDefault(const Action<F>& action) { - ExpectSpecProperty(last_clause_ < kWillByDefault, - ".WillByDefault() must appear " - "exactly once in an ON_CALL()."); - last_clause_ = kWillByDefault; - - ExpectSpecProperty(!action.IsDoDefault(), - "DoDefault() cannot be used in ON_CALL()."); - action_ = action; - return *this; - } - - // Returns true iff the given arguments match the matchers. - bool Matches(const ArgumentTuple& args) const { - return TupleMatches(matchers_, args) && extra_matcher_.Matches(args); - } - - // Returns the action specified by the user. - const Action<F>& GetAction() const { - AssertSpecProperty(last_clause_ == kWillByDefault, - ".WillByDefault() must appear exactly " - "once in an ON_CALL()."); - return action_; - } - - private: - // The information in statement - // - // ON_CALL(mock_object, Method(matchers)) - // .With(multi-argument-matcher) - // .WillByDefault(action); - // - // is recorded in the data members like this: - // - // source file that contains the statement => file_ - // line number of the statement => line_ - // matchers => matchers_ - // multi-argument-matcher => extra_matcher_ - // action => action_ - ArgumentMatcherTuple matchers_; - Matcher<const ArgumentTuple&> extra_matcher_; - Action<F> action_; -}; // class OnCallSpec - -// Possible reactions on uninteresting calls. -enum CallReaction { - kAllow, - kWarn, - kFail, -}; - -} // namespace internal - -// Utilities for manipulating mock objects. -class GTEST_API_ Mock { - public: - // The following public methods can be called concurrently. - - // Tells Google Mock to ignore mock_obj when checking for leaked - // mock objects. - static void AllowLeak(const void* mock_obj) - GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex); - - // Verifies and clears all expectations on the given mock object. - // If the expectations aren't satisfied, generates one or more - // Google Test non-fatal failures and returns false. - static bool VerifyAndClearExpectations(void* mock_obj) - GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex); - - // Verifies all expectations on the given mock object and clears its - // default actions and expectations. Returns true iff the - // verification was successful. - static bool VerifyAndClear(void* mock_obj) - GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex); - - private: - friend class internal::UntypedFunctionMockerBase; - - // Needed for a function mocker to register itself (so that we know - // how to clear a mock object). - template <typename F> - friend class internal::FunctionMockerBase; - - template <typename M> - friend class NiceMock; - - template <typename M> - friend class NaggyMock; - - template <typename M> - friend class StrictMock; - - // Tells Google Mock to allow uninteresting calls on the given mock - // object. - static void AllowUninterestingCalls(const void* mock_obj) - GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex); - - // Tells Google Mock to warn the user about uninteresting calls on - // the given mock object. - static void WarnUninterestingCalls(const void* mock_obj) - GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex); - - // Tells Google Mock to fail uninteresting calls on the given mock - // object. - static void FailUninterestingCalls(const void* mock_obj) - GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex); - - // Tells Google Mock the given mock object is being destroyed and - // its entry in the call-reaction table should be removed. - static void UnregisterCallReaction(const void* mock_obj) - GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex); - - // Returns the reaction Google Mock will have on uninteresting calls - // made on the given mock object. - static internal::CallReaction GetReactionOnUninterestingCalls( - const void* mock_obj) - GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex); - - // Verifies that all expectations on the given mock object have been - // satisfied. Reports one or more Google Test non-fatal failures - // and returns false if not. - static bool VerifyAndClearExpectationsLocked(void* mock_obj) - GTEST_EXCLUSIVE_LOCK_REQUIRED_(internal::g_gmock_mutex); - - // Clears all ON_CALL()s set on the given mock object. - static void ClearDefaultActionsLocked(void* mock_obj) - GTEST_EXCLUSIVE_LOCK_REQUIRED_(internal::g_gmock_mutex); - - // Registers a mock object and a mock method it owns. - static void Register( - const void* mock_obj, - internal::UntypedFunctionMockerBase* mocker) - GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex); - - // Tells Google Mock where in the source code mock_obj is used in an - // ON_CALL or EXPECT_CALL. In case mock_obj is leaked, this - // information helps the user identify which object it is. - static void RegisterUseByOnCallOrExpectCall( - const void* mock_obj, const char* file, int line) - GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex); - - // Unregisters a mock method; removes the owning mock object from - // the registry when the last mock method associated with it has - // been unregistered. This is called only in the destructor of - // FunctionMockerBase. - static void UnregisterLocked(internal::UntypedFunctionMockerBase* mocker) - GTEST_EXCLUSIVE_LOCK_REQUIRED_(internal::g_gmock_mutex); -}; // class Mock - -// An abstract handle of an expectation. Useful in the .After() -// clause of EXPECT_CALL() for setting the (partial) order of -// expectations. The syntax: -// -// Expectation e1 = EXPECT_CALL(...)...; -// EXPECT_CALL(...).After(e1)...; -// -// sets two expectations where the latter can only be matched after -// the former has been satisfied. -// -// Notes: -// - This class is copyable and has value semantics. -// - Constness is shallow: a const Expectation object itself cannot -// be modified, but the mutable methods of the ExpectationBase -// object it references can be called via expectation_base(). -// - The constructors and destructor are defined out-of-line because -// the Symbian WINSCW compiler wants to otherwise instantiate them -// when it sees this class definition, at which point it doesn't have -// ExpectationBase available yet, leading to incorrect destruction -// in the linked_ptr (or compilation errors if using a checking -// linked_ptr). -class GTEST_API_ Expectation { - public: - // Constructs a null object that doesn't reference any expectation. - Expectation(); - - ~Expectation(); - - // This single-argument ctor must not be explicit, in order to support the - // Expectation e = EXPECT_CALL(...); - // syntax. - // - // A TypedExpectation object stores its pre-requisites as - // Expectation objects, and needs to call the non-const Retire() - // method on the ExpectationBase objects they reference. Therefore - // Expectation must receive a *non-const* reference to the - // ExpectationBase object. - Expectation(internal::ExpectationBase& exp); // NOLINT - - // The compiler-generated copy ctor and operator= work exactly as - // intended, so we don't need to define our own. - - // Returns true iff rhs references the same expectation as this object does. - bool operator==(const Expectation& rhs) const { - return expectation_base_ == rhs.expectation_base_; - } - - bool operator!=(const Expectation& rhs) const { return !(*this == rhs); } - - private: - friend class ExpectationSet; - friend class Sequence; - friend class ::testing::internal::ExpectationBase; - friend class ::testing::internal::UntypedFunctionMockerBase; - - template <typename F> - friend class ::testing::internal::FunctionMockerBase; - - template <typename F> - friend class ::testing::internal::TypedExpectation; - - // This comparator is needed for putting Expectation objects into a set. - class Less { - public: - bool operator()(const Expectation& lhs, const Expectation& rhs) const { - return lhs.expectation_base_.get() < rhs.expectation_base_.get(); - } - }; - - typedef ::std::set<Expectation, Less> Set; - - Expectation( - const internal::linked_ptr<internal::ExpectationBase>& expectation_base); - - // Returns the expectation this object references. - const internal::linked_ptr<internal::ExpectationBase>& - expectation_base() const { - return expectation_base_; - } - - // A linked_ptr that co-owns the expectation this handle references. - internal::linked_ptr<internal::ExpectationBase> expectation_base_; -}; - -// A set of expectation handles. Useful in the .After() clause of -// EXPECT_CALL() for setting the (partial) order of expectations. The -// syntax: -// -// ExpectationSet es; -// es += EXPECT_CALL(...)...; -// es += EXPECT_CALL(...)...; -// EXPECT_CALL(...).After(es)...; -// -// sets three expectations where the last one can only be matched -// after the first two have both been satisfied. -// -// This class is copyable and has value semantics. -class ExpectationSet { - public: - // A bidirectional iterator that can read a const element in the set. - typedef Expectation::Set::const_iterator const_iterator; - - // An object stored in the set. This is an alias of Expectation. - typedef Expectation::Set::value_type value_type; - - // Constructs an empty set. - ExpectationSet() {} - - // This single-argument ctor must not be explicit, in order to support the - // ExpectationSet es = EXPECT_CALL(...); - // syntax. - ExpectationSet(internal::ExpectationBase& exp) { // NOLINT - *this += Expectation(exp); - } - - // This single-argument ctor implements implicit conversion from - // Expectation and thus must not be explicit. This allows either an - // Expectation or an ExpectationSet to be used in .After(). - ExpectationSet(const Expectation& e) { // NOLINT - *this += e; - } - - // The compiler-generator ctor and operator= works exactly as - // intended, so we don't need to define our own. - - // Returns true iff rhs contains the same set of Expectation objects - // as this does. - bool operator==(const ExpectationSet& rhs) const { - return expectations_ == rhs.expectations_; - } - - bool operator!=(const ExpectationSet& rhs) const { return !(*this == rhs); } - - // Implements the syntax - // expectation_set += EXPECT_CALL(...); - ExpectationSet& operator+=(const Expectation& e) { - expectations_.insert(e); - return *this; - } - - int size() const { return static_cast<int>(expectations_.size()); } - - const_iterator begin() const { return expectations_.begin(); } - const_iterator end() const { return expectations_.end(); } - - private: - Expectation::Set expectations_; -}; - - -// Sequence objects are used by a user to specify the relative order -// in which the expectations should match. They are copyable (we rely -// on the compiler-defined copy constructor and assignment operator). -class GTEST_API_ Sequence { - public: - // Constructs an empty sequence. - Sequence() : last_expectation_(new Expectation) {} - - // Adds an expectation to this sequence. The caller must ensure - // that no other thread is accessing this Sequence object. - void AddExpectation(const Expectation& expectation) const; - - private: - // The last expectation in this sequence. We use a linked_ptr here - // because Sequence objects are copyable and we want the copies to - // be aliases. The linked_ptr allows the copies to co-own and share - // the same Expectation object. - internal::linked_ptr<Expectation> last_expectation_; -}; // class Sequence - -// An object of this type causes all EXPECT_CALL() statements -// encountered in its scope to be put in an anonymous sequence. The -// work is done in the constructor and destructor. You should only -// create an InSequence object on the stack. -// -// The sole purpose for this class is to support easy definition of -// sequential expectations, e.g. -// -// { -// InSequence dummy; // The name of the object doesn't matter. -// -// // The following expectations must match in the order they appear. -// EXPECT_CALL(a, Bar())...; -// EXPECT_CALL(a, Baz())...; -// ... -// EXPECT_CALL(b, Xyz())...; -// } -// -// You can create InSequence objects in multiple threads, as long as -// they are used to affect different mock objects. The idea is that -// each thread can create and set up its own mocks as if it's the only -// thread. However, for clarity of your tests we recommend you to set -// up mocks in the main thread unless you have a good reason not to do -// so. -class GTEST_API_ InSequence { - public: - InSequence(); - ~InSequence(); - private: - bool sequence_created_; - - GTEST_DISALLOW_COPY_AND_ASSIGN_(InSequence); // NOLINT -} GTEST_ATTRIBUTE_UNUSED_; - -namespace internal { - -// Points to the implicit sequence introduced by a living InSequence -// object (if any) in the current thread or NULL. -GTEST_API_ extern ThreadLocal<Sequence*> g_gmock_implicit_sequence; - -// Base class for implementing expectations. -// -// There are two reasons for having a type-agnostic base class for -// Expectation: -// -// 1. We need to store collections of expectations of different -// types (e.g. all pre-requisites of a particular expectation, all -// expectations in a sequence). Therefore these expectation objects -// must share a common base class. -// -// 2. We can avoid binary code bloat by moving methods not depending -// on the template argument of Expectation to the base class. -// -// This class is internal and mustn't be used by user code directly. -class GTEST_API_ ExpectationBase { - public: - // source_text is the EXPECT_CALL(...) source that created this Expectation. - ExpectationBase(const char* file, int line, const std::string& source_text); - - virtual ~ExpectationBase(); - - // Where in the source file was the expectation spec defined? - const char* file() const { return file_; } - int line() const { return line_; } - const char* source_text() const { return source_text_.c_str(); } - // Returns the cardinality specified in the expectation spec. - const Cardinality& cardinality() const { return cardinality_; } - - // Describes the source file location of this expectation. - void DescribeLocationTo(::std::ostream* os) const { - *os << FormatFileLocation(file(), line()) << " "; - } - - // Describes how many times a function call matching this - // expectation has occurred. - void DescribeCallCountTo(::std::ostream* os) const - GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex); - - // If this mock method has an extra matcher (i.e. .With(matcher)), - // describes it to the ostream. - virtual void MaybeDescribeExtraMatcherTo(::std::ostream* os) = 0; - - protected: - friend class ::testing::Expectation; - friend class UntypedFunctionMockerBase; - - enum Clause { - // Don't change the order of the enum members! - kNone, - kWith, - kTimes, - kInSequence, - kAfter, - kWillOnce, - kWillRepeatedly, - kRetiresOnSaturation - }; - - typedef std::vector<const void*> UntypedActions; - - // Returns an Expectation object that references and co-owns this - // expectation. - virtual Expectation GetHandle() = 0; - - // Asserts that the EXPECT_CALL() statement has the given property. - void AssertSpecProperty(bool property, - const std::string& failure_message) const { - Assert(property, file_, line_, failure_message); - } - - // Expects that the EXPECT_CALL() statement has the given property. - void ExpectSpecProperty(bool property, - const std::string& failure_message) const { - Expect(property, file_, line_, failure_message); - } - - // Explicitly specifies the cardinality of this expectation. Used - // by the subclasses to implement the .Times() clause. - void SpecifyCardinality(const Cardinality& cardinality); - - // Returns true iff the user specified the cardinality explicitly - // using a .Times(). - bool cardinality_specified() const { return cardinality_specified_; } - - // Sets the cardinality of this expectation spec. - void set_cardinality(const Cardinality& a_cardinality) { - cardinality_ = a_cardinality; - } - - // The following group of methods should only be called after the - // EXPECT_CALL() statement, and only when g_gmock_mutex is held by - // the current thread. - - // Retires all pre-requisites of this expectation. - void RetireAllPreRequisites() - GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex); - - // Returns true iff this expectation is retired. - bool is_retired() const - GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) { - g_gmock_mutex.AssertHeld(); - return retired_; - } - - // Retires this expectation. - void Retire() - GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) { - g_gmock_mutex.AssertHeld(); - retired_ = true; - } - - // Returns true iff this expectation is satisfied. - bool IsSatisfied() const - GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) { - g_gmock_mutex.AssertHeld(); - return cardinality().IsSatisfiedByCallCount(call_count_); - } - - // Returns true iff this expectation is saturated. - bool IsSaturated() const - GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) { - g_gmock_mutex.AssertHeld(); - return cardinality().IsSaturatedByCallCount(call_count_); - } - - // Returns true iff this expectation is over-saturated. - bool IsOverSaturated() const - GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) { - g_gmock_mutex.AssertHeld(); - return cardinality().IsOverSaturatedByCallCount(call_count_); - } - - // Returns true iff all pre-requisites of this expectation are satisfied. - bool AllPrerequisitesAreSatisfied() const - GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex); - - // Adds unsatisfied pre-requisites of this expectation to 'result'. - void FindUnsatisfiedPrerequisites(ExpectationSet* result) const - GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex); - - // Returns the number this expectation has been invoked. - int call_count() const - GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) { - g_gmock_mutex.AssertHeld(); - return call_count_; - } - - // Increments the number this expectation has been invoked. - void IncrementCallCount() - GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) { - g_gmock_mutex.AssertHeld(); - call_count_++; - } - - // Checks the action count (i.e. the number of WillOnce() and - // WillRepeatedly() clauses) against the cardinality if this hasn't - // been done before. Prints a warning if there are too many or too - // few actions. - void CheckActionCountIfNotDone() const - GTEST_LOCK_EXCLUDED_(mutex_); - - friend class ::testing::Sequence; - friend class ::testing::internal::ExpectationTester; - - template <typename Function> - friend class TypedExpectation; - - // Implements the .Times() clause. - void UntypedTimes(const Cardinality& a_cardinality); - - // This group of fields are part of the spec and won't change after - // an EXPECT_CALL() statement finishes. - const char* file_; // The file that contains the expectation. - int line_; // The line number of the expectation. - const std::string source_text_; // The EXPECT_CALL(...) source text. - // True iff the cardinality is specified explicitly. - bool cardinality_specified_; - Cardinality cardinality_; // The cardinality of the expectation. - // The immediate pre-requisites (i.e. expectations that must be - // satisfied before this expectation can be matched) of this - // expectation. We use linked_ptr in the set because we want an - // Expectation object to be co-owned by its FunctionMocker and its - // successors. This allows multiple mock objects to be deleted at - // different times. - ExpectationSet immediate_prerequisites_; - - // This group of fields are the current state of the expectation, - // and can change as the mock function is called. - int call_count_; // How many times this expectation has been invoked. - bool retired_; // True iff this expectation has retired. - UntypedActions untyped_actions_; - bool extra_matcher_specified_; - bool repeated_action_specified_; // True if a WillRepeatedly() was specified. - bool retires_on_saturation_; - Clause last_clause_; - mutable bool action_count_checked_; // Under mutex_. - mutable Mutex mutex_; // Protects action_count_checked_. - - GTEST_DISALLOW_ASSIGN_(ExpectationBase); -}; // class ExpectationBase - -// Impements an expectation for the given function type. -template <typename F> -class TypedExpectation : public ExpectationBase { - public: - typedef typename Function<F>::ArgumentTuple ArgumentTuple; - typedef typename Function<F>::ArgumentMatcherTuple ArgumentMatcherTuple; - typedef typename Function<F>::Result Result; - - TypedExpectation(FunctionMockerBase<F>* owner, const char* a_file, int a_line, - const std::string& a_source_text, - const ArgumentMatcherTuple& m) - : ExpectationBase(a_file, a_line, a_source_text), - owner_(owner), - matchers_(m), - // By default, extra_matcher_ should match anything. However, - // we cannot initialize it with _ as that triggers a compiler - // bug in Symbian's C++ compiler (cannot decide between two - // overloaded constructors of Matcher<const ArgumentTuple&>). - extra_matcher_(A<const ArgumentTuple&>()), - repeated_action_(DoDefault()) {} - - virtual ~TypedExpectation() { - // Check the validity of the action count if it hasn't been done - // yet (for example, if the expectation was never used). - CheckActionCountIfNotDone(); - for (UntypedActions::const_iterator it = untyped_actions_.begin(); - it != untyped_actions_.end(); ++it) { - delete static_cast<const Action<F>*>(*it); - } - } - - // Implements the .With() clause. - TypedExpectation& With(const Matcher<const ArgumentTuple&>& m) { - if (last_clause_ == kWith) { - ExpectSpecProperty(false, - ".With() cannot appear " - "more than once in an EXPECT_CALL()."); - } else { - ExpectSpecProperty(last_clause_ < kWith, - ".With() must be the first " - "clause in an EXPECT_CALL()."); - } - last_clause_ = kWith; - - extra_matcher_ = m; - extra_matcher_specified_ = true; - return *this; - } - - // Implements the .Times() clause. - TypedExpectation& Times(const Cardinality& a_cardinality) { - ExpectationBase::UntypedTimes(a_cardinality); - return *this; - } - - // Implements the .Times() clause. - TypedExpectation& Times(int n) { - return Times(Exactly(n)); - } - - // Implements the .InSequence() clause. - TypedExpectation& InSequence(const Sequence& s) { - ExpectSpecProperty(last_clause_ <= kInSequence, - ".InSequence() cannot appear after .After()," - " .WillOnce(), .WillRepeatedly(), or " - ".RetiresOnSaturation()."); - last_clause_ = kInSequence; - - s.AddExpectation(GetHandle()); - return *this; - } - TypedExpectation& InSequence(const Sequence& s1, const Sequence& s2) { - return InSequence(s1).InSequence(s2); - } - TypedExpectation& InSequence(const Sequence& s1, const Sequence& s2, - const Sequence& s3) { - return InSequence(s1, s2).InSequence(s3); - } - TypedExpectation& InSequence(const Sequence& s1, const Sequence& s2, - const Sequence& s3, const Sequence& s4) { - return InSequence(s1, s2, s3).InSequence(s4); - } - TypedExpectation& InSequence(const Sequence& s1, const Sequence& s2, - const Sequence& s3, const Sequence& s4, - const Sequence& s5) { - return InSequence(s1, s2, s3, s4).InSequence(s5); - } - - // Implements that .After() clause. - TypedExpectation& After(const ExpectationSet& s) { - ExpectSpecProperty(last_clause_ <= kAfter, - ".After() cannot appear after .WillOnce()," - " .WillRepeatedly(), or " - ".RetiresOnSaturation()."); - last_clause_ = kAfter; - - for (ExpectationSet::const_iterator it = s.begin(); it != s.end(); ++it) { - immediate_prerequisites_ += *it; - } - return *this; - } - TypedExpectation& After(const ExpectationSet& s1, const ExpectationSet& s2) { - return After(s1).After(s2); - } - TypedExpectation& After(const ExpectationSet& s1, const ExpectationSet& s2, - const ExpectationSet& s3) { - return After(s1, s2).After(s3); - } - TypedExpectation& After(const ExpectationSet& s1, const ExpectationSet& s2, - const ExpectationSet& s3, const ExpectationSet& s4) { - return After(s1, s2, s3).After(s4); - } - TypedExpectation& After(const ExpectationSet& s1, const ExpectationSet& s2, - const ExpectationSet& s3, const ExpectationSet& s4, - const ExpectationSet& s5) { - return After(s1, s2, s3, s4).After(s5); - } - - // Implements the .WillOnce() clause. - TypedExpectation& WillOnce(const Action<F>& action) { - ExpectSpecProperty(last_clause_ <= kWillOnce, - ".WillOnce() cannot appear after " - ".WillRepeatedly() or .RetiresOnSaturation()."); - last_clause_ = kWillOnce; - - untyped_actions_.push_back(new Action<F>(action)); - if (!cardinality_specified()) { - set_cardinality(Exactly(static_cast<int>(untyped_actions_.size()))); - } - return *this; - } - - // Implements the .WillRepeatedly() clause. - TypedExpectation& WillRepeatedly(const Action<F>& action) { - if (last_clause_ == kWillRepeatedly) { - ExpectSpecProperty(false, - ".WillRepeatedly() cannot appear " - "more than once in an EXPECT_CALL()."); - } else { - ExpectSpecProperty(last_clause_ < kWillRepeatedly, - ".WillRepeatedly() cannot appear " - "after .RetiresOnSaturation()."); - } - last_clause_ = kWillRepeatedly; - repeated_action_specified_ = true; - - repeated_action_ = action; - if (!cardinality_specified()) { - set_cardinality(AtLeast(static_cast<int>(untyped_actions_.size()))); - } - - // Now that no more action clauses can be specified, we check - // whether their count makes sense. - CheckActionCountIfNotDone(); - return *this; - } - - // Implements the .RetiresOnSaturation() clause. - TypedExpectation& RetiresOnSaturation() { - ExpectSpecProperty(last_clause_ < kRetiresOnSaturation, - ".RetiresOnSaturation() cannot appear " - "more than once."); - last_clause_ = kRetiresOnSaturation; - retires_on_saturation_ = true; - - // Now that no more action clauses can be specified, we check - // whether their count makes sense. - CheckActionCountIfNotDone(); - return *this; - } - - // Returns the matchers for the arguments as specified inside the - // EXPECT_CALL() macro. - const ArgumentMatcherTuple& matchers() const { - return matchers_; - } - - // Returns the matcher specified by the .With() clause. - const Matcher<const ArgumentTuple&>& extra_matcher() const { - return extra_matcher_; - } - - // Returns the action specified by the .WillRepeatedly() clause. - const Action<F>& repeated_action() const { return repeated_action_; } - - // If this mock method has an extra matcher (i.e. .With(matcher)), - // describes it to the ostream. - virtual void MaybeDescribeExtraMatcherTo(::std::ostream* os) { - if (extra_matcher_specified_) { - *os << " Expected args: "; - extra_matcher_.DescribeTo(os); - *os << "\n"; - } - } - - private: - template <typename Function> - friend class FunctionMockerBase; - - // Returns an Expectation object that references and co-owns this - // expectation. - virtual Expectation GetHandle() { - return owner_->GetHandleOf(this); - } - - // The following methods will be called only after the EXPECT_CALL() - // statement finishes and when the current thread holds - // g_gmock_mutex. - - // Returns true iff this expectation matches the given arguments. - bool Matches(const ArgumentTuple& args) const - GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) { - g_gmock_mutex.AssertHeld(); - return TupleMatches(matchers_, args) && extra_matcher_.Matches(args); - } - - // Returns true iff this expectation should handle the given arguments. - bool ShouldHandleArguments(const ArgumentTuple& args) const - GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) { - g_gmock_mutex.AssertHeld(); - - // In case the action count wasn't checked when the expectation - // was defined (e.g. if this expectation has no WillRepeatedly() - // or RetiresOnSaturation() clause), we check it when the - // expectation is used for the first time. - CheckActionCountIfNotDone(); - return !is_retired() && AllPrerequisitesAreSatisfied() && Matches(args); - } - - // Describes the result of matching the arguments against this - // expectation to the given ostream. - void ExplainMatchResultTo( - const ArgumentTuple& args, - ::std::ostream* os) const - GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) { - g_gmock_mutex.AssertHeld(); - - if (is_retired()) { - *os << " Expected: the expectation is active\n" - << " Actual: it is retired\n"; - } else if (!Matches(args)) { - if (!TupleMatches(matchers_, args)) { - ExplainMatchFailureTupleTo(matchers_, args, os); - } - StringMatchResultListener listener; - if (!extra_matcher_.MatchAndExplain(args, &listener)) { - *os << " Expected args: "; - extra_matcher_.DescribeTo(os); - *os << "\n Actual: don't match"; - - internal::PrintIfNotEmpty(listener.str(), os); - *os << "\n"; - } - } else if (!AllPrerequisitesAreSatisfied()) { - *os << " Expected: all pre-requisites are satisfied\n" - << " Actual: the following immediate pre-requisites " - << "are not satisfied:\n"; - ExpectationSet unsatisfied_prereqs; - FindUnsatisfiedPrerequisites(&unsatisfied_prereqs); - int i = 0; - for (ExpectationSet::const_iterator it = unsatisfied_prereqs.begin(); - it != unsatisfied_prereqs.end(); ++it) { - it->expectation_base()->DescribeLocationTo(os); - *os << "pre-requisite #" << i++ << "\n"; - } - *os << " (end of pre-requisites)\n"; - } else { - // This line is here just for completeness' sake. It will never - // be executed as currently the ExplainMatchResultTo() function - // is called only when the mock function call does NOT match the - // expectation. - *os << "The call matches the expectation.\n"; - } - } - - // Returns the action that should be taken for the current invocation. - const Action<F>& GetCurrentAction( - const FunctionMockerBase<F>* mocker, - const ArgumentTuple& args) const - GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) { - g_gmock_mutex.AssertHeld(); - const int count = call_count(); - Assert(count >= 1, __FILE__, __LINE__, - "call_count() is <= 0 when GetCurrentAction() is " - "called - this should never happen."); - - const int action_count = static_cast<int>(untyped_actions_.size()); - if (action_count > 0 && !repeated_action_specified_ && - count > action_count) { - // If there is at least one WillOnce() and no WillRepeatedly(), - // we warn the user when the WillOnce() clauses ran out. - ::std::stringstream ss; - DescribeLocationTo(&ss); - ss << "Actions ran out in " << source_text() << "...\n" - << "Called " << count << " times, but only " - << action_count << " WillOnce()" - << (action_count == 1 ? " is" : "s are") << " specified - "; - mocker->DescribeDefaultActionTo(args, &ss); - Log(kWarning, ss.str(), 1); - } - - return count <= action_count ? - *static_cast<const Action<F>*>(untyped_actions_[count - 1]) : - repeated_action(); - } - - // Given the arguments of a mock function call, if the call will - // over-saturate this expectation, returns the default action; - // otherwise, returns the next action in this expectation. Also - // describes *what* happened to 'what', and explains *why* Google - // Mock does it to 'why'. This method is not const as it calls - // IncrementCallCount(). A return value of NULL means the default - // action. - const Action<F>* GetActionForArguments( - const FunctionMockerBase<F>* mocker, - const ArgumentTuple& args, - ::std::ostream* what, - ::std::ostream* why) - GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) { - g_gmock_mutex.AssertHeld(); - if (IsSaturated()) { - // We have an excessive call. - IncrementCallCount(); - *what << "Mock function called more times than expected - "; - mocker->DescribeDefaultActionTo(args, what); - DescribeCallCountTo(why); - - // TODO(wan@google.com): allow the user to control whether - // unexpected calls should fail immediately or continue using a - // flag --gmock_unexpected_calls_are_fatal. - return NULL; - } - - IncrementCallCount(); - RetireAllPreRequisites(); - - if (retires_on_saturation_ && IsSaturated()) { - Retire(); - } - - // Must be done after IncrementCount()! - *what << "Mock function call matches " << source_text() <<"...\n"; - return &(GetCurrentAction(mocker, args)); - } - - // All the fields below won't change once the EXPECT_CALL() - // statement finishes. - FunctionMockerBase<F>* const owner_; - ArgumentMatcherTuple matchers_; - Matcher<const ArgumentTuple&> extra_matcher_; - Action<F> repeated_action_; - - GTEST_DISALLOW_COPY_AND_ASSIGN_(TypedExpectation); -}; // class TypedExpectation - -// A MockSpec object is used by ON_CALL() or EXPECT_CALL() for -// specifying the default behavior of, or expectation on, a mock -// function. - -// Note: class MockSpec really belongs to the ::testing namespace. -// However if we define it in ::testing, MSVC will complain when -// classes in ::testing::internal declare it as a friend class -// template. To workaround this compiler bug, we define MockSpec in -// ::testing::internal and import it into ::testing. - -// Logs a message including file and line number information. -GTEST_API_ void LogWithLocation(testing::internal::LogSeverity severity, - const char* file, int line, - const std::string& message); - -template <typename F> -class MockSpec { - public: - typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple; - typedef typename internal::Function<F>::ArgumentMatcherTuple - ArgumentMatcherTuple; - - // Constructs a MockSpec object, given the function mocker object - // that the spec is associated with. - MockSpec(internal::FunctionMockerBase<F>* function_mocker, - const ArgumentMatcherTuple& matchers) - : function_mocker_(function_mocker), matchers_(matchers) {} - - // Adds a new default action spec to the function mocker and returns - // the newly created spec. - internal::OnCallSpec<F>& InternalDefaultActionSetAt( - const char* file, int line, const char* obj, const char* call) { - LogWithLocation(internal::kInfo, file, line, - std::string("ON_CALL(") + obj + ", " + call + ") invoked"); - return function_mocker_->AddNewOnCallSpec(file, line, matchers_); - } - - // Adds a new expectation spec to the function mocker and returns - // the newly created spec. - internal::TypedExpectation<F>& InternalExpectedAt( - const char* file, int line, const char* obj, const char* call) { - const std::string source_text(std::string("EXPECT_CALL(") + obj + ", " + - call + ")"); - LogWithLocation(internal::kInfo, file, line, source_text + " invoked"); - return function_mocker_->AddNewExpectation( - file, line, source_text, matchers_); - } - - // This operator overload is used to swallow the superfluous parameter list - // introduced by the ON/EXPECT_CALL macros. See the macro comments for more - // explanation. - MockSpec<F>& operator()(const internal::WithoutMatchers&, void* const) { - return *this; - } - - private: - template <typename Function> - friend class internal::FunctionMocker; - - // The function mocker that owns this spec. - internal::FunctionMockerBase<F>* const function_mocker_; - // The argument matchers specified in the spec. - ArgumentMatcherTuple matchers_; - - GTEST_DISALLOW_ASSIGN_(MockSpec); -}; // class MockSpec - -// Wrapper type for generically holding an ordinary value or lvalue reference. -// If T is not a reference type, it must be copyable or movable. -// ReferenceOrValueWrapper<T> is movable, and will also be copyable unless -// T is a move-only value type (which means that it will always be copyable -// if the current platform does not support move semantics). -// -// The primary template defines handling for values, but function header -// comments describe the contract for the whole template (including -// specializations). -template <typename T> -class ReferenceOrValueWrapper { - public: - // Constructs a wrapper from the given value/reference. - explicit ReferenceOrValueWrapper(T value) - : value_(::testing::internal::move(value)) { - } - - // Unwraps and returns the underlying value/reference, exactly as - // originally passed. The behavior of calling this more than once on - // the same object is unspecified. - T Unwrap() { return ::testing::internal::move(value_); } - - // Provides nondestructive access to the underlying value/reference. - // Always returns a const reference (more precisely, - // const RemoveReference<T>&). The behavior of calling this after - // calling Unwrap on the same object is unspecified. - const T& Peek() const { - return value_; - } - - private: - T value_; -}; - -// Specialization for lvalue reference types. See primary template -// for documentation. -template <typename T> -class ReferenceOrValueWrapper<T&> { - public: - // Workaround for debatable pass-by-reference lint warning (c-library-team - // policy precludes NOLINT in this context) - typedef T& reference; - explicit ReferenceOrValueWrapper(reference ref) - : value_ptr_(&ref) {} - T& Unwrap() { return *value_ptr_; } - const T& Peek() const { return *value_ptr_; } - - private: - T* value_ptr_; -}; - -// MSVC warns about using 'this' in base member initializer list, so -// we need to temporarily disable the warning. We have to do it for -// the entire class to suppress the warning, even though it's about -// the constructor only. - -#ifdef _MSC_VER -# pragma warning(push) // Saves the current warning state. -# pragma warning(disable:4355) // Temporarily disables warning 4355. -#endif // _MSV_VER - -// C++ treats the void type specially. For example, you cannot define -// a void-typed variable or pass a void value to a function. -// ActionResultHolder<T> holds a value of type T, where T must be a -// copyable type or void (T doesn't need to be default-constructable). -// It hides the syntactic difference between void and other types, and -// is used to unify the code for invoking both void-returning and -// non-void-returning mock functions. - -// Untyped base class for ActionResultHolder<T>. -class UntypedActionResultHolderBase { - public: - virtual ~UntypedActionResultHolderBase() {} - - // Prints the held value as an action's result to os. - virtual void PrintAsActionResult(::std::ostream* os) const = 0; -}; - -// This generic definition is used when T is not void. -template <typename T> -class ActionResultHolder : public UntypedActionResultHolderBase { - public: - // Returns the held value. Must not be called more than once. - T Unwrap() { - return result_.Unwrap(); - } - - // Prints the held value as an action's result to os. - virtual void PrintAsActionResult(::std::ostream* os) const { - *os << "\n Returns: "; - // T may be a reference type, so we don't use UniversalPrint(). - UniversalPrinter<T>::Print(result_.Peek(), os); - } - - // Performs the given mock function's default action and returns the - // result in a new-ed ActionResultHolder. - template <typename F> - static ActionResultHolder* PerformDefaultAction( - const FunctionMockerBase<F>* func_mocker, - typename RvalueRef<typename Function<F>::ArgumentTuple>::type args, - const std::string& call_description) { - return new ActionResultHolder(Wrapper(func_mocker->PerformDefaultAction( - internal::move(args), call_description))); - } - - // Performs the given action and returns the result in a new-ed - // ActionResultHolder. - template <typename F> - static ActionResultHolder* PerformAction( - const Action<F>& action, - typename RvalueRef<typename Function<F>::ArgumentTuple>::type args) { - return new ActionResultHolder( - Wrapper(action.Perform(internal::move(args)))); - } - - private: - typedef ReferenceOrValueWrapper<T> Wrapper; - - explicit ActionResultHolder(Wrapper result) - : result_(::testing::internal::move(result)) { - } - - Wrapper result_; - - GTEST_DISALLOW_COPY_AND_ASSIGN_(ActionResultHolder); -}; - -// Specialization for T = void. -template <> -class ActionResultHolder<void> : public UntypedActionResultHolderBase { - public: - void Unwrap() { } - - virtual void PrintAsActionResult(::std::ostream* /* os */) const {} - - // Performs the given mock function's default action and returns ownership - // of an empty ActionResultHolder*. - template <typename F> - static ActionResultHolder* PerformDefaultAction( - const FunctionMockerBase<F>* func_mocker, - typename RvalueRef<typename Function<F>::ArgumentTuple>::type args, - const std::string& call_description) { - func_mocker->PerformDefaultAction(internal::move(args), call_description); - return new ActionResultHolder; - } - - // Performs the given action and returns ownership of an empty - // ActionResultHolder*. - template <typename F> - static ActionResultHolder* PerformAction( - const Action<F>& action, - typename RvalueRef<typename Function<F>::ArgumentTuple>::type args) { - action.Perform(internal::move(args)); - return new ActionResultHolder; - } - - private: - ActionResultHolder() {} - GTEST_DISALLOW_COPY_AND_ASSIGN_(ActionResultHolder); -}; - -// The base of the function mocker class for the given function type. -// We put the methods in this class instead of its child to avoid code -// bloat. -template <typename F> -class FunctionMockerBase : public UntypedFunctionMockerBase { - public: - typedef typename Function<F>::Result Result; - typedef typename Function<F>::ArgumentTuple ArgumentTuple; - typedef typename Function<F>::ArgumentMatcherTuple ArgumentMatcherTuple; - - FunctionMockerBase() {} - - // The destructor verifies that all expectations on this mock - // function have been satisfied. If not, it will report Google Test - // non-fatal failures for the violations. - virtual ~FunctionMockerBase() - GTEST_LOCK_EXCLUDED_(g_gmock_mutex) { - MutexLock l(&g_gmock_mutex); - VerifyAndClearExpectationsLocked(); - Mock::UnregisterLocked(this); - ClearDefaultActionsLocked(); - } - - // Returns the ON_CALL spec that matches this mock function with the - // given arguments; returns NULL if no matching ON_CALL is found. - // L = * - const OnCallSpec<F>* FindOnCallSpec( - const ArgumentTuple& args) const { - for (UntypedOnCallSpecs::const_reverse_iterator it - = untyped_on_call_specs_.rbegin(); - it != untyped_on_call_specs_.rend(); ++it) { - const OnCallSpec<F>* spec = static_cast<const OnCallSpec<F>*>(*it); - if (spec->Matches(args)) - return spec; - } - - return NULL; - } - - // Performs the default action of this mock function on the given - // arguments and returns the result. Asserts (or throws if - // exceptions are enabled) with a helpful call descrption if there - // is no valid return value. This method doesn't depend on the - // mutable state of this object, and thus can be called concurrently - // without locking. - // L = * - Result PerformDefaultAction( - typename RvalueRef<typename Function<F>::ArgumentTuple>::type args, - const std::string& call_description) const { - const OnCallSpec<F>* const spec = - this->FindOnCallSpec(args); - if (spec != NULL) { - return spec->GetAction().Perform(internal::move(args)); - } - const std::string message = - call_description + - "\n The mock function has no default action " - "set, and its return type has no default value set."; -#if GTEST_HAS_EXCEPTIONS - if (!DefaultValue<Result>::Exists()) { - throw std::runtime_error(message); - } -#else - Assert(DefaultValue<Result>::Exists(), "", -1, message); -#endif - return DefaultValue<Result>::Get(); - } - - // Performs the default action with the given arguments and returns - // the action's result. The call description string will be used in - // the error message to describe the call in the case the default - // action fails. The caller is responsible for deleting the result. - // L = * - virtual UntypedActionResultHolderBase* UntypedPerformDefaultAction( - void* untyped_args, // must point to an ArgumentTuple - const std::string& call_description) const { - ArgumentTuple* args = static_cast<ArgumentTuple*>(untyped_args); - return ResultHolder::PerformDefaultAction(this, internal::move(*args), - call_description); - } - - // Performs the given action with the given arguments and returns - // the action's result. The caller is responsible for deleting the - // result. - // L = * - virtual UntypedActionResultHolderBase* UntypedPerformAction( - const void* untyped_action, void* untyped_args) const { - // Make a copy of the action before performing it, in case the - // action deletes the mock object (and thus deletes itself). - const Action<F> action = *static_cast<const Action<F>*>(untyped_action); - ArgumentTuple* args = static_cast<ArgumentTuple*>(untyped_args); - return ResultHolder::PerformAction(action, internal::move(*args)); - } - - // Implements UntypedFunctionMockerBase::ClearDefaultActionsLocked(): - // clears the ON_CALL()s set on this mock function. - virtual void ClearDefaultActionsLocked() - GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) { - g_gmock_mutex.AssertHeld(); - - // Deleting our default actions may trigger other mock objects to be - // deleted, for example if an action contains a reference counted smart - // pointer to that mock object, and that is the last reference. So if we - // delete our actions within the context of the global mutex we may deadlock - // when this method is called again. Instead, make a copy of the set of - // actions to delete, clear our set within the mutex, and then delete the - // actions outside of the mutex. - UntypedOnCallSpecs specs_to_delete; - untyped_on_call_specs_.swap(specs_to_delete); - - g_gmock_mutex.Unlock(); - for (UntypedOnCallSpecs::const_iterator it = - specs_to_delete.begin(); - it != specs_to_delete.end(); ++it) { - delete static_cast<const OnCallSpec<F>*>(*it); - } - - // Lock the mutex again, since the caller expects it to be locked when we - // return. - g_gmock_mutex.Lock(); - } - - protected: - template <typename Function> - friend class MockSpec; - - typedef ActionResultHolder<Result> ResultHolder; - - // Returns the result of invoking this mock function with the given - // arguments. This function can be safely called from multiple - // threads concurrently. - Result InvokeWith( - typename RvalueRef<typename Function<F>::ArgumentTuple>::type args) - GTEST_LOCK_EXCLUDED_(g_gmock_mutex) { - // const_cast is required since in C++98 we still pass ArgumentTuple around - // by const& instead of rvalue reference. - void* untyped_args = const_cast<void*>(static_cast<const void*>(&args)); - scoped_ptr<ResultHolder> holder( - DownCast_<ResultHolder*>(this->UntypedInvokeWith(untyped_args))); - return holder->Unwrap(); - } - - // Adds and returns a default action spec for this mock function. - OnCallSpec<F>& AddNewOnCallSpec( - const char* file, int line, - const ArgumentMatcherTuple& m) - GTEST_LOCK_EXCLUDED_(g_gmock_mutex) { - Mock::RegisterUseByOnCallOrExpectCall(MockObject(), file, line); - OnCallSpec<F>* const on_call_spec = new OnCallSpec<F>(file, line, m); - untyped_on_call_specs_.push_back(on_call_spec); - return *on_call_spec; - } - - // Adds and returns an expectation spec for this mock function. - TypedExpectation<F>& AddNewExpectation(const char* file, int line, - const std::string& source_text, - const ArgumentMatcherTuple& m) - GTEST_LOCK_EXCLUDED_(g_gmock_mutex) { - Mock::RegisterUseByOnCallOrExpectCall(MockObject(), file, line); - TypedExpectation<F>* const expectation = - new TypedExpectation<F>(this, file, line, source_text, m); - const linked_ptr<ExpectationBase> untyped_expectation(expectation); - // See the definition of untyped_expectations_ for why access to - // it is unprotected here. - untyped_expectations_.push_back(untyped_expectation); - - // Adds this expectation into the implicit sequence if there is one. - Sequence* const implicit_sequence = g_gmock_implicit_sequence.get(); - if (implicit_sequence != NULL) { - implicit_sequence->AddExpectation(Expectation(untyped_expectation)); - } - - return *expectation; - } - - private: - template <typename Func> friend class TypedExpectation; - - // Some utilities needed for implementing UntypedInvokeWith(). - - // Describes what default action will be performed for the given - // arguments. - // L = * - void DescribeDefaultActionTo(const ArgumentTuple& args, - ::std::ostream* os) const { - const OnCallSpec<F>* const spec = FindOnCallSpec(args); - - if (spec == NULL) { - *os << (internal::type_equals<Result, void>::value ? - "returning directly.\n" : - "returning default value.\n"); - } else { - *os << "taking default action specified at:\n" - << FormatFileLocation(spec->file(), spec->line()) << "\n"; - } - } - - // Writes a message that the call is uninteresting (i.e. neither - // explicitly expected nor explicitly unexpected) to the given - // ostream. - virtual void UntypedDescribeUninterestingCall( - const void* untyped_args, - ::std::ostream* os) const - GTEST_LOCK_EXCLUDED_(g_gmock_mutex) { - const ArgumentTuple& args = - *static_cast<const ArgumentTuple*>(untyped_args); - *os << "Uninteresting mock function call - "; - DescribeDefaultActionTo(args, os); - *os << " Function call: " << Name(); - UniversalPrint(args, os); - } - - // Returns the expectation that matches the given function arguments - // (or NULL is there's no match); when a match is found, - // untyped_action is set to point to the action that should be - // performed (or NULL if the action is "do default"), and - // is_excessive is modified to indicate whether the call exceeds the - // expected number. - // - // Critical section: We must find the matching expectation and the - // corresponding action that needs to be taken in an ATOMIC - // transaction. Otherwise another thread may call this mock - // method in the middle and mess up the state. - // - // However, performing the action has to be left out of the critical - // section. The reason is that we have no control on what the - // action does (it can invoke an arbitrary user function or even a - // mock function) and excessive locking could cause a dead lock. - virtual const ExpectationBase* UntypedFindMatchingExpectation( - const void* untyped_args, - const void** untyped_action, bool* is_excessive, - ::std::ostream* what, ::std::ostream* why) - GTEST_LOCK_EXCLUDED_(g_gmock_mutex) { - const ArgumentTuple& args = - *static_cast<const ArgumentTuple*>(untyped_args); - MutexLock l(&g_gmock_mutex); - TypedExpectation<F>* exp = this->FindMatchingExpectationLocked(args); - if (exp == NULL) { // A match wasn't found. - this->FormatUnexpectedCallMessageLocked(args, what, why); - return NULL; - } - - // This line must be done before calling GetActionForArguments(), - // which will increment the call count for *exp and thus affect - // its saturation status. - *is_excessive = exp->IsSaturated(); - const Action<F>* action = exp->GetActionForArguments(this, args, what, why); - if (action != NULL && action->IsDoDefault()) - action = NULL; // Normalize "do default" to NULL. - *untyped_action = action; - return exp; - } - - // Prints the given function arguments to the ostream. - virtual void UntypedPrintArgs(const void* untyped_args, - ::std::ostream* os) const { - const ArgumentTuple& args = - *static_cast<const ArgumentTuple*>(untyped_args); - UniversalPrint(args, os); - } - - // Returns the expectation that matches the arguments, or NULL if no - // expectation matches them. - TypedExpectation<F>* FindMatchingExpectationLocked( - const ArgumentTuple& args) const - GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) { - g_gmock_mutex.AssertHeld(); - // See the definition of untyped_expectations_ for why access to - // it is unprotected here. - for (typename UntypedExpectations::const_reverse_iterator it = - untyped_expectations_.rbegin(); - it != untyped_expectations_.rend(); ++it) { - TypedExpectation<F>* const exp = - static_cast<TypedExpectation<F>*>(it->get()); - if (exp->ShouldHandleArguments(args)) { - return exp; - } - } - return NULL; - } - - // Returns a message that the arguments don't match any expectation. - void FormatUnexpectedCallMessageLocked( - const ArgumentTuple& args, - ::std::ostream* os, - ::std::ostream* why) const - GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) { - g_gmock_mutex.AssertHeld(); - *os << "\nUnexpected mock function call - "; - DescribeDefaultActionTo(args, os); - PrintTriedExpectationsLocked(args, why); - } - - // Prints a list of expectations that have been tried against the - // current mock function call. - void PrintTriedExpectationsLocked( - const ArgumentTuple& args, - ::std::ostream* why) const - GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) { - g_gmock_mutex.AssertHeld(); - const int count = static_cast<int>(untyped_expectations_.size()); - *why << "Google Mock tried the following " << count << " " - << (count == 1 ? "expectation, but it didn't match" : - "expectations, but none matched") - << ":\n"; - for (int i = 0; i < count; i++) { - TypedExpectation<F>* const expectation = - static_cast<TypedExpectation<F>*>(untyped_expectations_[i].get()); - *why << "\n"; - expectation->DescribeLocationTo(why); - if (count > 1) { - *why << "tried expectation #" << i << ": "; - } - *why << expectation->source_text() << "...\n"; - expectation->ExplainMatchResultTo(args, why); - expectation->DescribeCallCountTo(why); - } - } - - // There is no generally useful and implementable semantics of - // copying a mock object, so copying a mock is usually a user error. - // Thus we disallow copying function mockers. If the user really - // wants to copy a mock object, they should implement their own copy - // operation, for example: - // - // class MockFoo : public Foo { - // public: - // // Defines a copy constructor explicitly. - // MockFoo(const MockFoo& src) {} - // ... - // }; - GTEST_DISALLOW_COPY_AND_ASSIGN_(FunctionMockerBase); -}; // class FunctionMockerBase - -#ifdef _MSC_VER -# pragma warning(pop) // Restores the warning state. -#endif // _MSV_VER - -// Implements methods of FunctionMockerBase. - -// Verifies that all expectations on this mock function have been -// satisfied. Reports one or more Google Test non-fatal failures and -// returns false if not. - -// Reports an uninteresting call (whose description is in msg) in the -// manner specified by 'reaction'. -void ReportUninterestingCall(CallReaction reaction, const std::string& msg); - -} // namespace internal - -// The style guide prohibits "using" statements in a namespace scope -// inside a header file. However, the MockSpec class template is -// meant to be defined in the ::testing namespace. The following line -// is just a trick for working around a bug in MSVC 8.0, which cannot -// handle it if we define MockSpec in ::testing. -using internal::MockSpec; - -// Const(x) is a convenient function for obtaining a const reference -// to x. This is useful for setting expectations on an overloaded -// const mock method, e.g. -// -// class MockFoo : public FooInterface { -// public: -// MOCK_METHOD0(Bar, int()); -// MOCK_CONST_METHOD0(Bar, int&()); -// }; -// -// MockFoo foo; -// // Expects a call to non-const MockFoo::Bar(). -// EXPECT_CALL(foo, Bar()); -// // Expects a call to const MockFoo::Bar(). -// EXPECT_CALL(Const(foo), Bar()); -template <typename T> -inline const T& Const(const T& x) { return x; } - -// Constructs an Expectation object that references and co-owns exp. -inline Expectation::Expectation(internal::ExpectationBase& exp) // NOLINT - : expectation_base_(exp.GetHandle().expectation_base()) {} - -} // namespace testing - -// Implementation for ON_CALL and EXPECT_CALL macros. A separate macro is -// required to avoid compile errors when the name of the method used in call is -// a result of macro expansion. See CompilesWithMethodNameExpandedFromMacro -// tests in internal/gmock-spec-builders_test.cc for more details. -// -// This macro supports statements both with and without parameter matchers. If -// the parameter list is omitted, gMock will accept any parameters, which allows -// tests to be written that don't need to encode the number of method -// parameter. This technique may only be used for non-overloaded methods. -// -// // These are the same: -// ON_CALL(mock, NoArgsMethod()).WillByDefault(…); -// ON_CALL(mock, NoArgsMethod).WillByDefault(…); -// -// // As are these: -// ON_CALL(mock, TwoArgsMethod(_, _)).WillByDefault(…); -// ON_CALL(mock, TwoArgsMethod).WillByDefault(…); -// -// // Can also specify args if you want, of course: -// ON_CALL(mock, TwoArgsMethod(_, 45)).WillByDefault(…); -// -// // Overloads work as long as you specify parameters: -// ON_CALL(mock, OverloadedMethod(_)).WillByDefault(…); -// ON_CALL(mock, OverloadedMethod(_, _)).WillByDefault(…); -// -// // Oops! Which overload did you want? -// ON_CALL(mock, OverloadedMethod).WillByDefault(…); -// => ERROR: call to member function 'gmock_OverloadedMethod' is ambiguous -// -// How this works: The mock class uses two overloads of the gmock_Method -// expectation setter method plus an operator() overload on the MockSpec object. -// In the matcher list form, the macro expands to: -// -// // This statement: -// ON_CALL(mock, TwoArgsMethod(_, 45))… -// -// // …expands to: -// mock.gmock_TwoArgsMethod(_, 45)(WithoutMatchers(), nullptr)… -// |-------------v---------------||------------v-------------| -// invokes first overload swallowed by operator() -// -// // …which is essentially: -// mock.gmock_TwoArgsMethod(_, 45)… -// -// Whereas the form without a matcher list: -// -// // This statement: -// ON_CALL(mock, TwoArgsMethod)… -// -// // …expands to: -// mock.gmock_TwoArgsMethod(WithoutMatchers(), nullptr)… -// |-----------------------v--------------------------| -// invokes second overload -// -// // …which is essentially: -// mock.gmock_TwoArgsMethod(_, _)… -// -// The WithoutMatchers() argument is used to disambiguate overloads and to -// block the caller from accidentally invoking the second overload directly. The -// second argument is an internal type derived from the method signature. The -// failure to disambiguate two overloads of this method in the ON_CALL statement -// is how we block callers from setting expectations on overloaded methods. -#define GMOCK_ON_CALL_IMPL_(mock_expr, Setter, call) \ - ((mock_expr).gmock_##call)(::testing::internal::GetWithoutMatchers(), NULL) \ - .Setter(__FILE__, __LINE__, #mock_expr, #call) - -#define ON_CALL(obj, call) \ - GMOCK_ON_CALL_IMPL_(obj, InternalDefaultActionSetAt, call) - -#define EXPECT_CALL(obj, call) \ - GMOCK_ON_CALL_IMPL_(obj, InternalExpectedAt, call) - -#endif // GMOCK_INCLUDE_GMOCK_GMOCK_SPEC_BUILDERS_H_ |