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// Unit test cases for IntType.
#include <memory>
#include <unordered_map>
#include "tensorflow/core/platform/port.h"
#include "tensorflow/core/lib/gtl/int_type.h"
#include <gtest/gtest.h>
namespace tensorflow {
TF_LIB_GTL_DEFINE_INT_TYPE(Int8_IT, int8);
TF_LIB_GTL_DEFINE_INT_TYPE(UInt8_IT, uint8);
TF_LIB_GTL_DEFINE_INT_TYPE(Int16_IT, int16);
TF_LIB_GTL_DEFINE_INT_TYPE(UInt16_IT, uint16);
TF_LIB_GTL_DEFINE_INT_TYPE(Int32_IT, int32);
TF_LIB_GTL_DEFINE_INT_TYPE(Int64_IT, int64);
TF_LIB_GTL_DEFINE_INT_TYPE(UInt32_IT, uint32);
TF_LIB_GTL_DEFINE_INT_TYPE(UInt64_IT, uint64);
TF_LIB_GTL_DEFINE_INT_TYPE(Long_IT, long); // NOLINT
template <typename IntType_Type>
class IntTypeTest : public ::testing::Test {
public:
typedef IntType_Type T;
};
// All tests below will be executed on all supported IntTypes.
typedef ::testing::Types<Int8_IT, UInt8_IT, Int16_IT, UInt16_IT, Int32_IT,
Int64_IT, UInt64_IT, Long_IT> SupportedIntTypes;
TYPED_TEST_CASE(IntTypeTest, SupportedIntTypes);
TYPED_TEST(IntTypeTest, TestInitialization) {
constexpr typename TestFixture::T a;
constexpr typename TestFixture::T b(1);
constexpr typename TestFixture::T c(b);
EXPECT_EQ(0, a); // default initialization to 0
EXPECT_EQ(1, b);
EXPECT_EQ(1, c);
}
TYPED_TEST(IntTypeTest, TestOperators) {
typename TestFixture::T a(0);
typename TestFixture::T b(1);
typename TestFixture::T c(2);
constexpr typename TestFixture::T d(3);
constexpr typename TestFixture::T e(4);
// On all EXPECT_EQ below, we use the accessor value() as to not invoke the
// comparison operators which must themselves be tested.
// -- UNARY OPERATORS --------------------------------------------------------
EXPECT_EQ(0, (a++).value());
EXPECT_EQ(2, (++a).value());
EXPECT_EQ(2, (a--).value());
EXPECT_EQ(0, (--a).value());
EXPECT_EQ(true, !a);
EXPECT_EQ(false, !b);
static_assert(!d == false, "Unary operator! failed");
EXPECT_EQ(a.value(), +a);
static_assert(+d == d.value(), "Unary operator+ failed");
EXPECT_EQ(-a.value(), -a);
static_assert(-d == -d.value(), "Unary operator- failed");
EXPECT_EQ(~a.value(), ~a); // ~zero
EXPECT_EQ(~b.value(), ~b); // ~non-zero
static_assert(~d == ~d.value(), "Unary operator~ failed");
// -- ASSIGNMENT OPERATORS ---------------------------------------------------
// We test all assignment operators using IntType and constant as arguments.
// We also test the return from the operators.
// From same IntType
c = a = b;
EXPECT_EQ(1, a.value());
EXPECT_EQ(1, c.value());
// From constant
c = b = 2;
EXPECT_EQ(2, b.value());
EXPECT_EQ(2, c.value());
// From same IntType
c = a += b;
EXPECT_EQ(3, a.value());
EXPECT_EQ(3, c.value());
c = a -= b;
EXPECT_EQ(1, a.value());
EXPECT_EQ(1, c.value());
c = a *= b;
EXPECT_EQ(2, a.value());
EXPECT_EQ(2, c.value());
c = a /= b;
EXPECT_EQ(1, a.value());
EXPECT_EQ(1, c.value());
c = a <<= b;
EXPECT_EQ(4, a.value());
EXPECT_EQ(4, c.value());
c = a >>= b;
EXPECT_EQ(1, a.value());
EXPECT_EQ(1, c.value());
c = a %= b;
EXPECT_EQ(1, a.value());
EXPECT_EQ(1, c.value());
// From constant
c = a += 2;
EXPECT_EQ(3, a.value());
EXPECT_EQ(3, c.value());
c = a -= 2;
EXPECT_EQ(1, a.value());
EXPECT_EQ(1, c.value());
c = a *= 2;
EXPECT_EQ(2, a.value());
EXPECT_EQ(2, c.value());
c = a /= 2;
EXPECT_EQ(1, a.value());
EXPECT_EQ(1, c.value());
c = a <<= 2;
EXPECT_EQ(4, a.value());
EXPECT_EQ(4, c.value());
c = a >>= 2;
EXPECT_EQ(1, a.value());
EXPECT_EQ(1, c.value());
c = a %= 2;
EXPECT_EQ(1, a.value());
EXPECT_EQ(1, c.value());
// -- COMPARISON OPERATORS ---------------------------------------------------
a = 0;
b = 1;
EXPECT_FALSE(a == b);
EXPECT_TRUE(a == 0); // NOLINT
EXPECT_FALSE(1 == a); // NOLINT
static_assert(d == d, "operator== failed");
static_assert(d == 3, "operator== failed");
static_assert(3 == d, "operator== failed");
EXPECT_TRUE(a != b);
EXPECT_TRUE(a != 1); // NOLINT
EXPECT_FALSE(0 != a); // NOLINT
static_assert(d != e, "operator!= failed");
static_assert(d != 4, "operator!= failed");
static_assert(4 != d, "operator!= failed");
EXPECT_TRUE(a < b);
EXPECT_TRUE(a < 1); // NOLINT
EXPECT_FALSE(0 < a); // NOLINT
static_assert(d < e, "operator< failed");
static_assert(d < 4, "operator< failed");
static_assert(3 < e, "operator< failed");
EXPECT_TRUE(a <= b);
EXPECT_TRUE(a <= 1); // NOLINT
EXPECT_TRUE(0 <= a); // NOLINT
static_assert(d <= e, "operator<= failed");
static_assert(d <= 4, "operator<= failed");
static_assert(3 <= e, "operator<= failed");
EXPECT_FALSE(a > b);
EXPECT_FALSE(a > 1); // NOLINT
EXPECT_FALSE(0 > a); // NOLINT
static_assert(e > d, "operator> failed");
static_assert(e > 3, "operator> failed");
static_assert(4 > d, "operator> failed");
EXPECT_FALSE(a >= b);
EXPECT_FALSE(a >= 1); // NOLINT
EXPECT_TRUE(0 >= a); // NOLINT
static_assert(e >= d, "operator>= failed");
static_assert(e >= 3, "operator>= failed");
static_assert(4 >= d, "operator>= failed");
// -- BINARY OPERATORS -------------------------------------------------------
a = 1;
b = 3;
EXPECT_EQ(4, (a + b).value());
EXPECT_EQ(4, (a + 3).value());
EXPECT_EQ(4, (1 + b).value());
static_assert((d + e).value() == 7, "Binary operator+ failed");
static_assert((d + 4).value() == 7, "Binary operator+ failed");
static_assert((3 + e).value() == 7, "Binary operator+ failed");
EXPECT_EQ(2, (b - a).value());
EXPECT_EQ(2, (b - 1).value());
EXPECT_EQ(2, (3 - a).value());
static_assert((e - d).value() == 1, "Binary operator- failed");
static_assert((e - 3).value() == 1, "Binary operator- failed");
static_assert((4 - d).value() == 1, "Binary operator- failed");
EXPECT_EQ(3, (a * b).value());
EXPECT_EQ(3, (a * 3).value());
EXPECT_EQ(3, (1 * b).value());
static_assert((d * e).value() == 12, "Binary operator* failed");
static_assert((d * 4).value() == 12, "Binary operator* failed");
static_assert((3 * e).value() == 12, "Binary operator* failed");
EXPECT_EQ(0, (a / b).value());
EXPECT_EQ(0, (a / 3).value());
EXPECT_EQ(0, (1 / b).value());
static_assert((d / e).value() == 0, "Binary operator/ failed");
static_assert((d / 4).value() == 0, "Binary operator/ failed");
static_assert((3 / e).value() == 0, "Binary operator/ failed");
EXPECT_EQ(8, (a << b).value());
EXPECT_EQ(8, (a << 3).value());
EXPECT_EQ(8, (1 << b).value());
static_assert((d << e).value() == 48, "Binary operator<< failed");
static_assert((d << 4).value() == 48, "Binary operator<< failed");
static_assert((3 << e).value() == 48, "Binary operator<< failed");
b = 8;
EXPECT_EQ(4, (b >> a).value());
EXPECT_EQ(4, (b >> 1).value());
EXPECT_EQ(4, (8 >> a).value());
static_assert((d >> e).value() == 0, "Binary operator>> failed");
static_assert((d >> 4).value() == 0, "Binary operator>> failed");
static_assert((3 >> e).value() == 0, "Binary operator>> failed");
b = 3;
a = 2;
EXPECT_EQ(1, (b % a).value());
EXPECT_EQ(1, (b % 2).value());
EXPECT_EQ(1, (3 % a).value());
static_assert((e % d).value() == 1, "Binary operator% failed");
static_assert((e % 3).value() == 1, "Binary operator% failed");
static_assert((4 % d).value() == 1, "Binary operator% failed");
}
TYPED_TEST(IntTypeTest, TestHashFunctor) {
std::unordered_map<typename TestFixture::T, char,
typename TestFixture::T::Hasher> map;
typename TestFixture::T a(0);
map[a] = 'c';
EXPECT_EQ('c', map[a]);
map[++a] = 'o';
EXPECT_EQ('o', map[a]);
typename TestFixture::T b(a);
EXPECT_EQ(typename TestFixture::T::Hasher()(a),
typename TestFixture::T::Hasher()(b));
}
// Tests the use of the templatized value accessor that performs static_casts.
// We use -1 to force casting in unsigned integers.
TYPED_TEST(IntTypeTest, TestValueAccessor) {
constexpr typename TestFixture::T::ValueType i = -1;
constexpr typename TestFixture::T int_type(i);
EXPECT_EQ(i, int_type.value());
static_assert(int_type.value() == i, "value() failed");
// The use of the keyword 'template' (suggested by Clang) is only necessary
// as this code is part of a template class. Weird syntax though. Good news
// is that only int_type.value<int>() is needed in most code.
EXPECT_EQ(static_cast<int>(i), int_type.template value<int>());
EXPECT_EQ(static_cast<int8>(i), int_type.template value<int8>());
EXPECT_EQ(static_cast<int16>(i), int_type.template value<int16>());
EXPECT_EQ(static_cast<int32>(i), int_type.template value<int32>());
EXPECT_EQ(static_cast<uint32>(i), int_type.template value<uint32>());
EXPECT_EQ(static_cast<int64>(i), int_type.template value<int64>());
EXPECT_EQ(static_cast<uint64>(i), int_type.template value<uint64>());
EXPECT_EQ(static_cast<long>(i), int_type.template value<long>()); // NOLINT
static_assert(int_type.template value<int>() == static_cast<int>(i),
"value<Value>() failed");
}
TYPED_TEST(IntTypeTest, TestMove) {
// Check that the int types have move constructor/assignment.
// We do this by composing a struct with an int type and a unique_ptr. This
// struct can't be copied due to the unique_ptr, so it must be moved.
// If this compiles, it means that the int types have move operators.
struct NotCopyable {
typename TestFixture::T inttype;
std::unique_ptr<int> ptr;
static NotCopyable Make(int i) {
NotCopyable f;
f.inttype = typename TestFixture::T(i);
f.ptr.reset(new int(i));
return f;
}
};
// Test move constructor.
NotCopyable foo = NotCopyable::Make(123);
EXPECT_EQ(123, foo.inttype);
EXPECT_EQ(123, *foo.ptr);
// Test move assignment.
foo = NotCopyable::Make(321);
EXPECT_EQ(321, foo.inttype);
EXPECT_EQ(321, *foo.ptr);
}
} // namespace tensorflow
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