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dynamicbitset/gtest-1.7.0/test/gtest-param-test_test.cc
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// | |
// Author: vladl@google.com (Vlad Losev) | |
// | |
// Tests for Google Test itself. This file verifies that the parameter | |
// generators objects produce correct parameter sequences and that | |
// Google Test runtime instantiates correct tests from those sequences. | |
#include "gtest/gtest.h" | |
#if GTEST_HAS_PARAM_TEST | |
# include <algorithm> | |
# include <iostream> | |
# include <list> | |
# include <sstream> | |
# include <string> | |
# include <vector> | |
// To include gtest-internal-inl.h. | |
# define GTEST_IMPLEMENTATION_ 1 | |
# include "src/gtest-internal-inl.h" // for UnitTestOptions | |
# undef GTEST_IMPLEMENTATION_ | |
# include "test/gtest-param-test_test.h" | |
using ::std::vector; | |
using ::std::sort; | |
using ::testing::AddGlobalTestEnvironment; | |
using ::testing::Bool; | |
using ::testing::Message; | |
using ::testing::Range; | |
using ::testing::TestWithParam; | |
using ::testing::Values; | |
using ::testing::ValuesIn; | |
# if GTEST_HAS_COMBINE | |
using ::testing::Combine; | |
using ::std::tr1::get; | |
using ::std::tr1::make_tuple; | |
using ::std::tr1::tuple; | |
# endif // GTEST_HAS_COMBINE | |
using ::testing::internal::ParamGenerator; | |
using ::testing::internal::UnitTestOptions; | |
// Prints a value to a string. | |
// | |
// TODO(wan@google.com): remove PrintValue() when we move matchers and | |
// EXPECT_THAT() from Google Mock to Google Test. At that time, we | |
// can write EXPECT_THAT(x, Eq(y)) to compare two tuples x and y, as | |
// EXPECT_THAT() and the matchers know how to print tuples. | |
template <typename T> | |
::std::string PrintValue(const T& value) { | |
::std::stringstream stream; | |
stream << value; | |
return stream.str(); | |
} | |
# if GTEST_HAS_COMBINE | |
// These overloads allow printing tuples in our tests. We cannot | |
// define an operator<< for tuples, as that definition needs to be in | |
// the std namespace in order to be picked up by Google Test via | |
// Argument-Dependent Lookup, yet defining anything in the std | |
// namespace in non-STL code is undefined behavior. | |
template <typename T1, typename T2> | |
::std::string PrintValue(const tuple<T1, T2>& value) { | |
::std::stringstream stream; | |
stream << "(" << get<0>(value) << ", " << get<1>(value) << ")"; | |
return stream.str(); | |
} | |
template <typename T1, typename T2, typename T3> | |
::std::string PrintValue(const tuple<T1, T2, T3>& value) { | |
::std::stringstream stream; | |
stream << "(" << get<0>(value) << ", " << get<1>(value) | |
<< ", "<< get<2>(value) << ")"; | |
return stream.str(); | |
} | |
template <typename T1, typename T2, typename T3, typename T4, typename T5, | |
typename T6, typename T7, typename T8, typename T9, typename T10> | |
::std::string PrintValue( | |
const tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>& value) { | |
::std::stringstream stream; | |
stream << "(" << get<0>(value) << ", " << get<1>(value) | |
<< ", "<< get<2>(value) << ", " << get<3>(value) | |
<< ", "<< get<4>(value) << ", " << get<5>(value) | |
<< ", "<< get<6>(value) << ", " << get<7>(value) | |
<< ", "<< get<8>(value) << ", " << get<9>(value) << ")"; | |
return stream.str(); | |
} | |
# endif // GTEST_HAS_COMBINE | |
// Verifies that a sequence generated by the generator and accessed | |
// via the iterator object matches the expected one using Google Test | |
// assertions. | |
template <typename T, size_t N> | |
void VerifyGenerator(const ParamGenerator<T>& generator, | |
const T (&expected_values)[N]) { | |
typename ParamGenerator<T>::iterator it = generator.begin(); | |
for (size_t i = 0; i < N; ++i) { | |
ASSERT_FALSE(it == generator.end()) | |
<< "At element " << i << " when accessing via an iterator " | |
<< "created with the copy constructor.\n"; | |
// We cannot use EXPECT_EQ() here as the values may be tuples, | |
// which don't support <<. | |
EXPECT_TRUE(expected_values[i] == *it) | |
<< "where i is " << i | |
<< ", expected_values[i] is " << PrintValue(expected_values[i]) | |
<< ", *it is " << PrintValue(*it) | |
<< ", and 'it' is an iterator created with the copy constructor.\n"; | |
it++; | |
} | |
EXPECT_TRUE(it == generator.end()) | |
<< "At the presumed end of sequence when accessing via an iterator " | |
<< "created with the copy constructor.\n"; | |
// Test the iterator assignment. The following lines verify that | |
// the sequence accessed via an iterator initialized via the | |
// assignment operator (as opposed to a copy constructor) matches | |
// just the same. | |
it = generator.begin(); | |
for (size_t i = 0; i < N; ++i) { | |
ASSERT_FALSE(it == generator.end()) | |
<< "At element " << i << " when accessing via an iterator " | |
<< "created with the assignment operator.\n"; | |
EXPECT_TRUE(expected_values[i] == *it) | |
<< "where i is " << i | |
<< ", expected_values[i] is " << PrintValue(expected_values[i]) | |
<< ", *it is " << PrintValue(*it) | |
<< ", and 'it' is an iterator created with the copy constructor.\n"; | |
it++; | |
} | |
EXPECT_TRUE(it == generator.end()) | |
<< "At the presumed end of sequence when accessing via an iterator " | |
<< "created with the assignment operator.\n"; | |
} | |
template <typename T> | |
void VerifyGeneratorIsEmpty(const ParamGenerator<T>& generator) { | |
typename ParamGenerator<T>::iterator it = generator.begin(); | |
EXPECT_TRUE(it == generator.end()); | |
it = generator.begin(); | |
EXPECT_TRUE(it == generator.end()); | |
} | |
// Generator tests. They test that each of the provided generator functions | |
// generates an expected sequence of values. The general test pattern | |
// instantiates a generator using one of the generator functions, | |
// checks the sequence produced by the generator using its iterator API, | |
// and then resets the iterator back to the beginning of the sequence | |
// and checks the sequence again. | |
// Tests that iterators produced by generator functions conform to the | |
// ForwardIterator concept. | |
TEST(IteratorTest, ParamIteratorConformsToForwardIteratorConcept) { | |
const ParamGenerator<int> gen = Range(0, 10); | |
ParamGenerator<int>::iterator it = gen.begin(); | |
// Verifies that iterator initialization works as expected. | |
ParamGenerator<int>::iterator it2 = it; | |
EXPECT_TRUE(*it == *it2) << "Initialized iterators must point to the " | |
<< "element same as its source points to"; | |
// Verifies that iterator assignment works as expected. | |
it++; | |
EXPECT_FALSE(*it == *it2); | |
it2 = it; | |
EXPECT_TRUE(*it == *it2) << "Assigned iterators must point to the " | |
<< "element same as its source points to"; | |
// Verifies that prefix operator++() returns *this. | |
EXPECT_EQ(&it, &(++it)) << "Result of the prefix operator++ must be " | |
<< "refer to the original object"; | |
// Verifies that the result of the postfix operator++ points to the value | |
// pointed to by the original iterator. | |
int original_value = *it; // Have to compute it outside of macro call to be | |
// unaffected by the parameter evaluation order. | |
EXPECT_EQ(original_value, *(it++)); | |
// Verifies that prefix and postfix operator++() advance an iterator | |
// all the same. | |
it2 = it; | |
it++; | |
++it2; | |
EXPECT_TRUE(*it == *it2); | |
} | |
// Tests that Range() generates the expected sequence. | |
TEST(RangeTest, IntRangeWithDefaultStep) { | |
const ParamGenerator<int> gen = Range(0, 3); | |
const int expected_values[] = {0, 1, 2}; | |
VerifyGenerator(gen, expected_values); | |
} | |
// Edge case. Tests that Range() generates the single element sequence | |
// as expected when provided with range limits that are equal. | |
TEST(RangeTest, IntRangeSingleValue) { | |
const ParamGenerator<int> gen = Range(0, 1); | |
const int expected_values[] = {0}; | |
VerifyGenerator(gen, expected_values); | |
} | |
// Edge case. Tests that Range() with generates empty sequence when | |
// supplied with an empty range. | |
TEST(RangeTest, IntRangeEmpty) { | |
const ParamGenerator<int> gen = Range(0, 0); | |
VerifyGeneratorIsEmpty(gen); | |
} | |
// Tests that Range() with custom step (greater then one) generates | |
// the expected sequence. | |
TEST(RangeTest, IntRangeWithCustomStep) { | |
const ParamGenerator<int> gen = Range(0, 9, 3); | |
const int expected_values[] = {0, 3, 6}; | |
VerifyGenerator(gen, expected_values); | |
} | |
// Tests that Range() with custom step (greater then one) generates | |
// the expected sequence when the last element does not fall on the | |
// upper range limit. Sequences generated by Range() must not have | |
// elements beyond the range limits. | |
TEST(RangeTest, IntRangeWithCustomStepOverUpperBound) { | |
const ParamGenerator<int> gen = Range(0, 4, 3); | |
const int expected_values[] = {0, 3}; | |
VerifyGenerator(gen, expected_values); | |
} | |
// Verifies that Range works with user-defined types that define | |
// copy constructor, operator=(), operator+(), and operator<(). | |
class DogAdder { | |
public: | |
explicit DogAdder(const char* a_value) : value_(a_value) {} | |
DogAdder(const DogAdder& other) : value_(other.value_.c_str()) {} | |
DogAdder operator=(const DogAdder& other) { | |
if (this != &other) | |
value_ = other.value_; | |
return *this; | |
} | |
DogAdder operator+(const DogAdder& other) const { | |
Message msg; | |
msg << value_.c_str() << other.value_.c_str(); | |
return DogAdder(msg.GetString().c_str()); | |
} | |
bool operator<(const DogAdder& other) const { | |
return value_ < other.value_; | |
} | |
const std::string& value() const { return value_; } | |
private: | |
std::string value_; | |
}; | |
TEST(RangeTest, WorksWithACustomType) { | |
const ParamGenerator<DogAdder> gen = | |
Range(DogAdder("cat"), DogAdder("catdogdog"), DogAdder("dog")); | |
ParamGenerator<DogAdder>::iterator it = gen.begin(); | |
ASSERT_FALSE(it == gen.end()); | |
EXPECT_STREQ("cat", it->value().c_str()); | |
ASSERT_FALSE(++it == gen.end()); | |
EXPECT_STREQ("catdog", it->value().c_str()); | |
EXPECT_TRUE(++it == gen.end()); | |
} | |
class IntWrapper { | |
public: | |
explicit IntWrapper(int a_value) : value_(a_value) {} | |
IntWrapper(const IntWrapper& other) : value_(other.value_) {} | |
IntWrapper operator=(const IntWrapper& other) { | |
value_ = other.value_; | |
return *this; | |
} | |
// operator+() adds a different type. | |
IntWrapper operator+(int other) const { return IntWrapper(value_ + other); } | |
bool operator<(const IntWrapper& other) const { | |
return value_ < other.value_; | |
} | |
int value() const { return value_; } | |
private: | |
int value_; | |
}; | |
TEST(RangeTest, WorksWithACustomTypeWithDifferentIncrementType) { | |
const ParamGenerator<IntWrapper> gen = Range(IntWrapper(0), IntWrapper(2)); | |
ParamGenerator<IntWrapper>::iterator it = gen.begin(); | |
ASSERT_FALSE(it == gen.end()); | |
EXPECT_EQ(0, it->value()); | |
ASSERT_FALSE(++it == gen.end()); | |
EXPECT_EQ(1, it->value()); | |
EXPECT_TRUE(++it == gen.end()); | |
} | |
// Tests that ValuesIn() with an array parameter generates | |
// the expected sequence. | |
TEST(ValuesInTest, ValuesInArray) { | |
int array[] = {3, 5, 8}; | |
const ParamGenerator<int> gen = ValuesIn(array); | |
VerifyGenerator(gen, array); | |
} | |
// Tests that ValuesIn() with a const array parameter generates | |
// the expected sequence. | |
TEST(ValuesInTest, ValuesInConstArray) { | |
const int array[] = {3, 5, 8}; | |
const ParamGenerator<int> gen = ValuesIn(array); | |
VerifyGenerator(gen, array); | |
} | |
// Edge case. Tests that ValuesIn() with an array parameter containing a | |
// single element generates the single element sequence. | |
TEST(ValuesInTest, ValuesInSingleElementArray) { | |
int array[] = {42}; | |
const ParamGenerator<int> gen = ValuesIn(array); | |
VerifyGenerator(gen, array); | |
} | |
// Tests that ValuesIn() generates the expected sequence for an STL | |
// container (vector). | |
TEST(ValuesInTest, ValuesInVector) { | |
typedef ::std::vector<int> ContainerType; | |
ContainerType values; | |
values.push_back(3); | |
values.push_back(5); | |
values.push_back(8); | |
const ParamGenerator<int> gen = ValuesIn(values); | |
const int expected_values[] = {3, 5, 8}; | |
VerifyGenerator(gen, expected_values); | |
} | |
// Tests that ValuesIn() generates the expected sequence. | |
TEST(ValuesInTest, ValuesInIteratorRange) { | |
typedef ::std::vector<int> ContainerType; | |
ContainerType values; | |
values.push_back(3); | |
values.push_back(5); | |
values.push_back(8); | |
const ParamGenerator<int> gen = ValuesIn(values.begin(), values.end()); | |
const int expected_values[] = {3, 5, 8}; | |
VerifyGenerator(gen, expected_values); | |
} | |
// Edge case. Tests that ValuesIn() provided with an iterator range specifying a | |
// single value generates a single-element sequence. | |
TEST(ValuesInTest, ValuesInSingleElementIteratorRange) { | |
typedef ::std::vector<int> ContainerType; | |
ContainerType values; | |
values.push_back(42); | |
const ParamGenerator<int> gen = ValuesIn(values.begin(), values.end()); | |
const int expected_values[] = {42}; | |
VerifyGenerator(gen, expected_values); | |
} | |
// Edge case. Tests that ValuesIn() provided with an empty iterator range | |
// generates an empty sequence. | |
TEST(ValuesInTest, ValuesInEmptyIteratorRange) { | |
typedef ::std::vector<int> ContainerType; | |
ContainerType values; | |
const ParamGenerator<int> gen = ValuesIn(values.begin(), values.end()); | |
VerifyGeneratorIsEmpty(gen); | |
} | |
// Tests that the Values() generates the expected sequence. | |
TEST(ValuesTest, ValuesWorks) { | |
const ParamGenerator<int> gen = Values(3, 5, 8); | |
const int expected_values[] = {3, 5, 8}; | |
VerifyGenerator(gen, expected_values); | |
} | |
// Tests that Values() generates the expected sequences from elements of | |
// different types convertible to ParamGenerator's parameter type. | |
TEST(ValuesTest, ValuesWorksForValuesOfCompatibleTypes) { | |
const ParamGenerator<double> gen = Values(3, 5.0f, 8.0); | |
const double expected_values[] = {3.0, 5.0, 8.0}; | |
VerifyGenerator(gen, expected_values); | |
} | |
TEST(ValuesTest, ValuesWorksForMaxLengthList) { | |
const ParamGenerator<int> gen = Values( | |
10, 20, 30, 40, 50, 60, 70, 80, 90, 100, | |
110, 120, 130, 140, 150, 160, 170, 180, 190, 200, | |
210, 220, 230, 240, 250, 260, 270, 280, 290, 300, | |
310, 320, 330, 340, 350, 360, 370, 380, 390, 400, | |
410, 420, 430, 440, 450, 460, 470, 480, 490, 500); | |
const int expected_values[] = { | |
10, 20, 30, 40, 50, 60, 70, 80, 90, 100, | |
110, 120, 130, 140, 150, 160, 170, 180, 190, 200, | |
210, 220, 230, 240, 250, 260, 270, 280, 290, 300, | |
310, 320, 330, 340, 350, 360, 370, 380, 390, 400, | |
410, 420, 430, 440, 450, 460, 470, 480, 490, 500}; | |
VerifyGenerator(gen, expected_values); | |
} | |
// Edge case test. Tests that single-parameter Values() generates the sequence | |
// with the single value. | |
TEST(ValuesTest, ValuesWithSingleParameter) { | |
const ParamGenerator<int> gen = Values(42); | |
const int expected_values[] = {42}; | |
VerifyGenerator(gen, expected_values); | |
} | |
// Tests that Bool() generates sequence (false, true). | |
TEST(BoolTest, BoolWorks) { | |
const ParamGenerator<bool> gen = Bool(); | |
const bool expected_values[] = {false, true}; | |
VerifyGenerator(gen, expected_values); | |
} | |
# if GTEST_HAS_COMBINE | |
// Tests that Combine() with two parameters generates the expected sequence. | |
TEST(CombineTest, CombineWithTwoParameters) { | |
const char* foo = "foo"; | |
const char* bar = "bar"; | |
const ParamGenerator<tuple<const char*, int> > gen = | |
Combine(Values(foo, bar), Values(3, 4)); | |
tuple<const char*, int> expected_values[] = { | |
make_tuple(foo, 3), make_tuple(foo, 4), | |
make_tuple(bar, 3), make_tuple(bar, 4)}; | |
VerifyGenerator(gen, expected_values); | |
} | |
// Tests that Combine() with three parameters generates the expected sequence. | |
TEST(CombineTest, CombineWithThreeParameters) { | |
const ParamGenerator<tuple<int, int, int> > gen = Combine(Values(0, 1), | |
Values(3, 4), | |
Values(5, 6)); | |
tuple<int, int, int> expected_values[] = { | |
make_tuple(0, 3, 5), make_tuple(0, 3, 6), | |
make_tuple(0, 4, 5), make_tuple(0, 4, 6), | |
make_tuple(1, 3, 5), make_tuple(1, 3, 6), | |
make_tuple(1, 4, 5), make_tuple(1, 4, 6)}; | |
VerifyGenerator(gen, expected_values); | |
} | |
// Tests that the Combine() with the first parameter generating a single value | |
// sequence generates a sequence with the number of elements equal to the | |
// number of elements in the sequence generated by the second parameter. | |
TEST(CombineTest, CombineWithFirstParameterSingleValue) { | |
const ParamGenerator<tuple<int, int> > gen = Combine(Values(42), | |
Values(0, 1)); | |
tuple<int, int> expected_values[] = {make_tuple(42, 0), make_tuple(42, 1)}; | |
VerifyGenerator(gen, expected_values); | |
} | |
// Tests that the Combine() with the second parameter generating a single value | |
// sequence generates a sequence with the number of elements equal to the | |
// number of elements in the sequence generated by the first parameter. | |
TEST(CombineTest, CombineWithSecondParameterSingleValue) { | |
const ParamGenerator<tuple<int, int> > gen = Combine(Values(0, 1), | |
Values(42)); | |
tuple<int, int> expected_values[] = {make_tuple(0, 42), make_tuple(1, 42)}; | |
VerifyGenerator(gen, expected_values); | |
} | |
// Tests that when the first parameter produces an empty sequence, | |
// Combine() produces an empty sequence, too. | |
TEST(CombineTest, CombineWithFirstParameterEmptyRange) { | |
const ParamGenerator<tuple<int, int> > gen = Combine(Range(0, 0), | |
Values(0, 1)); | |
VerifyGeneratorIsEmpty(gen); | |
} | |
// Tests that when the second parameter produces an empty sequence, | |
// Combine() produces an empty sequence, too. | |
TEST(CombineTest, CombineWithSecondParameterEmptyRange) { | |
const ParamGenerator<tuple<int, int> > gen = Combine(Values(0, 1), | |
Range(1, 1)); | |
VerifyGeneratorIsEmpty(gen); | |
} | |
// Edge case. Tests that combine works with the maximum number | |
// of parameters supported by Google Test (currently 10). | |
TEST(CombineTest, CombineWithMaxNumberOfParameters) { | |
const char* foo = "foo"; | |
const char* bar = "bar"; | |
const ParamGenerator<tuple<const char*, int, int, int, int, int, int, int, | |
int, int> > gen = Combine(Values(foo, bar), | |
Values(1), Values(2), | |
Values(3), Values(4), | |
Values(5), Values(6), | |
Values(7), Values(8), | |
Values(9)); | |
tuple<const char*, int, int, int, int, int, int, int, int, int> | |
expected_values[] = {make_tuple(foo, 1, 2, 3, 4, 5, 6, 7, 8, 9), | |
make_tuple(bar, 1, 2, 3, 4, 5, 6, 7, 8, 9)}; | |
VerifyGenerator(gen, expected_values); | |
} | |
# endif // GTEST_HAS_COMBINE | |
// Tests that an generator produces correct sequence after being | |
// assigned from another generator. | |
TEST(ParamGeneratorTest, AssignmentWorks) { | |
ParamGenerator<int> gen = Values(1, 2); | |
const ParamGenerator<int> gen2 = Values(3, 4); | |
gen = gen2; | |
const int expected_values[] = {3, 4}; | |
VerifyGenerator(gen, expected_values); | |
} | |
// This test verifies that the tests are expanded and run as specified: | |
// one test per element from the sequence produced by the generator | |
// specified in INSTANTIATE_TEST_CASE_P. It also verifies that the test's | |
// fixture constructor, SetUp(), and TearDown() have run and have been | |
// supplied with the correct parameters. | |
// The use of environment object allows detection of the case where no test | |
// case functionality is run at all. In this case TestCaseTearDown will not | |
// be able to detect missing tests, naturally. | |
template <int kExpectedCalls> | |
class TestGenerationEnvironment : public ::testing::Environment { | |
public: | |
static TestGenerationEnvironment* Instance() { | |
static TestGenerationEnvironment* instance = new TestGenerationEnvironment; | |
return instance; | |
} | |
void FixtureConstructorExecuted() { fixture_constructor_count_++; } | |
void SetUpExecuted() { set_up_count_++; } | |
void TearDownExecuted() { tear_down_count_++; } | |
void TestBodyExecuted() { test_body_count_++; } | |
virtual void TearDown() { | |
// If all MultipleTestGenerationTest tests have been de-selected | |
// by the filter flag, the following checks make no sense. | |
bool perform_check = false; | |
for (int i = 0; i < kExpectedCalls; ++i) { | |
Message msg; | |
msg << "TestsExpandedAndRun/" << i; | |
if (UnitTestOptions::FilterMatchesTest( | |
"TestExpansionModule/MultipleTestGenerationTest", | |
msg.GetString().c_str())) { | |
perform_check = true; | |
} | |
} | |
if (perform_check) { | |
EXPECT_EQ(kExpectedCalls, fixture_constructor_count_) | |
<< "Fixture constructor of ParamTestGenerationTest test case " | |
<< "has not been run as expected."; | |
EXPECT_EQ(kExpectedCalls, set_up_count_) | |
<< "Fixture SetUp method of ParamTestGenerationTest test case " | |
<< "has not been run as expected."; | |
EXPECT_EQ(kExpectedCalls, tear_down_count_) | |
<< "Fixture TearDown method of ParamTestGenerationTest test case " | |
<< "has not been run as expected."; | |
EXPECT_EQ(kExpectedCalls, test_body_count_) | |
<< "Test in ParamTestGenerationTest test case " | |
<< "has not been run as expected."; | |
} | |
} | |
private: | |
TestGenerationEnvironment() : fixture_constructor_count_(0), set_up_count_(0), | |
tear_down_count_(0), test_body_count_(0) {} | |
int fixture_constructor_count_; | |
int set_up_count_; | |
int tear_down_count_; | |
int test_body_count_; | |
GTEST_DISALLOW_COPY_AND_ASSIGN_(TestGenerationEnvironment); | |
}; | |
const int test_generation_params[] = {36, 42, 72}; | |
class TestGenerationTest : public TestWithParam<int> { | |
public: | |
enum { | |
PARAMETER_COUNT = | |
sizeof(test_generation_params)/sizeof(test_generation_params[0]) | |
}; | |
typedef TestGenerationEnvironment<PARAMETER_COUNT> Environment; | |
TestGenerationTest() { | |
Environment::Instance()->FixtureConstructorExecuted(); | |
current_parameter_ = GetParam(); | |
} | |
virtual void SetUp() { | |
Environment::Instance()->SetUpExecuted(); | |
EXPECT_EQ(current_parameter_, GetParam()); | |
} | |
virtual void TearDown() { | |
Environment::Instance()->TearDownExecuted(); | |
EXPECT_EQ(current_parameter_, GetParam()); | |
} | |
static void SetUpTestCase() { | |
bool all_tests_in_test_case_selected = true; | |
for (int i = 0; i < PARAMETER_COUNT; ++i) { | |
Message test_name; | |
test_name << "TestsExpandedAndRun/" << i; | |
if ( !UnitTestOptions::FilterMatchesTest( | |
"TestExpansionModule/MultipleTestGenerationTest", | |
test_name.GetString())) { | |
all_tests_in_test_case_selected = false; | |
} | |
} | |
EXPECT_TRUE(all_tests_in_test_case_selected) | |
<< "When running the TestGenerationTest test case all of its tests\n" | |
<< "must be selected by the filter flag for the test case to pass.\n" | |
<< "If not all of them are enabled, we can't reliably conclude\n" | |
<< "that the correct number of tests have been generated."; | |
collected_parameters_.clear(); | |
} | |
static void TearDownTestCase() { | |
vector<int> expected_values(test_generation_params, | |
test_generation_params + PARAMETER_COUNT); | |
// Test execution order is not guaranteed by Google Test, | |
// so the order of values in collected_parameters_ can be | |
// different and we have to sort to compare. | |
sort(expected_values.begin(), expected_values.end()); | |
sort(collected_parameters_.begin(), collected_parameters_.end()); | |
EXPECT_TRUE(collected_parameters_ == expected_values); | |
} | |
protected: | |
int current_parameter_; | |
static vector<int> collected_parameters_; | |
private: | |
GTEST_DISALLOW_COPY_AND_ASSIGN_(TestGenerationTest); | |
}; | |
vector<int> TestGenerationTest::collected_parameters_; | |
TEST_P(TestGenerationTest, TestsExpandedAndRun) { | |
Environment::Instance()->TestBodyExecuted(); | |
EXPECT_EQ(current_parameter_, GetParam()); | |
collected_parameters_.push_back(GetParam()); | |
} | |
INSTANTIATE_TEST_CASE_P(TestExpansionModule, TestGenerationTest, | |
ValuesIn(test_generation_params)); | |
// This test verifies that the element sequence (third parameter of | |
// INSTANTIATE_TEST_CASE_P) is evaluated in InitGoogleTest() and neither at | |
// the call site of INSTANTIATE_TEST_CASE_P nor in RUN_ALL_TESTS(). For | |
// that, we declare param_value_ to be a static member of | |
// GeneratorEvaluationTest and initialize it to 0. We set it to 1 in | |
// main(), just before invocation of InitGoogleTest(). After calling | |
// InitGoogleTest(), we set the value to 2. If the sequence is evaluated | |
// before or after InitGoogleTest, INSTANTIATE_TEST_CASE_P will create a | |
// test with parameter other than 1, and the test body will fail the | |
// assertion. | |
class GeneratorEvaluationTest : public TestWithParam<int> { | |
public: | |
static int param_value() { return param_value_; } | |
static void set_param_value(int param_value) { param_value_ = param_value; } | |
private: | |
static int param_value_; | |
}; | |
int GeneratorEvaluationTest::param_value_ = 0; | |
TEST_P(GeneratorEvaluationTest, GeneratorsEvaluatedInMain) { | |
EXPECT_EQ(1, GetParam()); | |
} | |
INSTANTIATE_TEST_CASE_P(GenEvalModule, | |
GeneratorEvaluationTest, | |
Values(GeneratorEvaluationTest::param_value())); | |
// Tests that generators defined in a different translation unit are | |
// functional. Generator extern_gen is defined in gtest-param-test_test2.cc. | |
extern ParamGenerator<int> extern_gen; | |
class ExternalGeneratorTest : public TestWithParam<int> {}; | |
TEST_P(ExternalGeneratorTest, ExternalGenerator) { | |
// Sequence produced by extern_gen contains only a single value | |
// which we verify here. | |
EXPECT_EQ(GetParam(), 33); | |
} | |
INSTANTIATE_TEST_CASE_P(ExternalGeneratorModule, | |
ExternalGeneratorTest, | |
extern_gen); | |
// Tests that a parameterized test case can be defined in one translation | |
// unit and instantiated in another. This test will be instantiated in | |
// gtest-param-test_test2.cc. ExternalInstantiationTest fixture class is | |
// defined in gtest-param-test_test.h. | |
TEST_P(ExternalInstantiationTest, IsMultipleOf33) { | |
EXPECT_EQ(0, GetParam() % 33); | |
} | |
// Tests that a parameterized test case can be instantiated with multiple | |
// generators. | |
class MultipleInstantiationTest : public TestWithParam<int> {}; | |
TEST_P(MultipleInstantiationTest, AllowsMultipleInstances) { | |
} | |
INSTANTIATE_TEST_CASE_P(Sequence1, MultipleInstantiationTest, Values(1, 2)); | |
INSTANTIATE_TEST_CASE_P(Sequence2, MultipleInstantiationTest, Range(3, 5)); | |
// Tests that a parameterized test case can be instantiated | |
// in multiple translation units. This test will be instantiated | |
// here and in gtest-param-test_test2.cc. | |
// InstantiationInMultipleTranslationUnitsTest fixture class | |
// is defined in gtest-param-test_test.h. | |
TEST_P(InstantiationInMultipleTranslaionUnitsTest, IsMultipleOf42) { | |
EXPECT_EQ(0, GetParam() % 42); | |
} | |
INSTANTIATE_TEST_CASE_P(Sequence1, | |
InstantiationInMultipleTranslaionUnitsTest, | |
Values(42, 42*2)); | |
// Tests that each iteration of parameterized test runs in a separate test | |
// object. | |
class SeparateInstanceTest : public TestWithParam<int> { | |
public: | |
SeparateInstanceTest() : count_(0) {} | |
static void TearDownTestCase() { | |
EXPECT_GE(global_count_, 2) | |
<< "If some (but not all) SeparateInstanceTest tests have been " | |
<< "filtered out this test will fail. Make sure that all " | |
<< "GeneratorEvaluationTest are selected or de-selected together " | |
<< "by the test filter."; | |
} | |
protected: | |
int count_; | |
static int global_count_; | |
}; | |
int SeparateInstanceTest::global_count_ = 0; | |
TEST_P(SeparateInstanceTest, TestsRunInSeparateInstances) { | |
EXPECT_EQ(0, count_++); | |
global_count_++; | |
} | |
INSTANTIATE_TEST_CASE_P(FourElemSequence, SeparateInstanceTest, Range(1, 4)); | |
// Tests that all instantiations of a test have named appropriately. Test | |
// defined with TEST_P(TestCaseName, TestName) and instantiated with | |
// INSTANTIATE_TEST_CASE_P(SequenceName, TestCaseName, generator) must be named | |
// SequenceName/TestCaseName.TestName/i, where i is the 0-based index of the | |
// sequence element used to instantiate the test. | |
class NamingTest : public TestWithParam<int> {}; | |
TEST_P(NamingTest, TestsReportCorrectNamesAndParameters) { | |
const ::testing::TestInfo* const test_info = | |
::testing::UnitTest::GetInstance()->current_test_info(); | |
EXPECT_STREQ("ZeroToFiveSequence/NamingTest", test_info->test_case_name()); | |
Message index_stream; | |
index_stream << "TestsReportCorrectNamesAndParameters/" << GetParam(); | |
EXPECT_STREQ(index_stream.GetString().c_str(), test_info->name()); | |
EXPECT_EQ(::testing::PrintToString(GetParam()), test_info->value_param()); | |
} | |
INSTANTIATE_TEST_CASE_P(ZeroToFiveSequence, NamingTest, Range(0, 5)); | |
// Class that cannot be streamed into an ostream. It needs to be copyable | |
// (and, in case of MSVC, also assignable) in order to be a test parameter | |
// type. Its default copy constructor and assignment operator do exactly | |
// what we need. | |
class Unstreamable { | |
public: | |
explicit Unstreamable(int value) : value_(value) {} | |
private: | |
int value_; | |
}; | |
class CommentTest : public TestWithParam<Unstreamable> {}; | |
TEST_P(CommentTest, TestsCorrectlyReportUnstreamableParams) { | |
const ::testing::TestInfo* const test_info = | |
::testing::UnitTest::GetInstance()->current_test_info(); | |
EXPECT_EQ(::testing::PrintToString(GetParam()), test_info->value_param()); | |
} | |
INSTANTIATE_TEST_CASE_P(InstantiationWithComments, | |
CommentTest, | |
Values(Unstreamable(1))); | |
// Verify that we can create a hierarchy of test fixtures, where the base | |
// class fixture is not parameterized and the derived class is. In this case | |
// ParameterizedDerivedTest inherits from NonParameterizedBaseTest. We | |
// perform simple tests on both. | |
class NonParameterizedBaseTest : public ::testing::Test { | |
public: | |
NonParameterizedBaseTest() : n_(17) { } | |
protected: | |
int n_; | |
}; | |
class ParameterizedDerivedTest : public NonParameterizedBaseTest, | |
public ::testing::WithParamInterface<int> { | |
protected: | |
ParameterizedDerivedTest() : count_(0) { } | |
int count_; | |
static int global_count_; | |
}; | |
int ParameterizedDerivedTest::global_count_ = 0; | |
TEST_F(NonParameterizedBaseTest, FixtureIsInitialized) { | |
EXPECT_EQ(17, n_); | |
} | |
TEST_P(ParameterizedDerivedTest, SeesSequence) { | |
EXPECT_EQ(17, n_); | |
EXPECT_EQ(0, count_++); | |
EXPECT_EQ(GetParam(), global_count_++); | |
} | |
class ParameterizedDeathTest : public ::testing::TestWithParam<int> { }; | |
TEST_F(ParameterizedDeathTest, GetParamDiesFromTestF) { | |
EXPECT_DEATH_IF_SUPPORTED(GetParam(), | |
".* value-parameterized test .*"); | |
} | |
INSTANTIATE_TEST_CASE_P(RangeZeroToFive, ParameterizedDerivedTest, Range(0, 5)); | |
#endif // GTEST_HAS_PARAM_TEST | |
TEST(CompileTest, CombineIsDefinedOnlyWhenGtestHasParamTestIsDefined) { | |
#if GTEST_HAS_COMBINE && !GTEST_HAS_PARAM_TEST | |
FAIL() << "GTEST_HAS_COMBINE is defined while GTEST_HAS_PARAM_TEST is not\n" | |
#endif | |
} | |
int main(int argc, char **argv) { | |
#if GTEST_HAS_PARAM_TEST | |
// Used in TestGenerationTest test case. | |
AddGlobalTestEnvironment(TestGenerationTest::Environment::Instance()); | |
// Used in GeneratorEvaluationTest test case. Tests that the updated value | |
// will be picked up for instantiating tests in GeneratorEvaluationTest. | |
GeneratorEvaluationTest::set_param_value(1); | |
#endif // GTEST_HAS_PARAM_TEST | |
::testing::InitGoogleTest(&argc, argv); | |
#if GTEST_HAS_PARAM_TEST | |
// Used in GeneratorEvaluationTest test case. Tests that value updated | |
// here will NOT be used for instantiating tests in | |
// GeneratorEvaluationTest. | |
GeneratorEvaluationTest::set_param_value(2); | |
#endif // GTEST_HAS_PARAM_TEST | |
return RUN_ALL_TESTS(); | |
} |