| // Copyright 2008, 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 |
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| // 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. |
| |
| // Macros and functions for implementing parameterized tests |
| // in Google C++ Testing and Mocking Framework (Google Test) |
| |
| // IWYU pragma: private, include "gtest/gtest.h" |
| // IWYU pragma: friend gtest/.* |
| // IWYU pragma: friend gmock/.* |
| |
| #ifndef GOOGLETEST_INCLUDE_GTEST_GTEST_PARAM_TEST_H_ |
| #define GOOGLETEST_INCLUDE_GTEST_GTEST_PARAM_TEST_H_ |
| |
| // Value-parameterized tests allow you to test your code with different |
| // parameters without writing multiple copies of the same test. |
| // |
| // Here is how you use value-parameterized tests: |
| |
| #if 0 |
| |
| // To write value-parameterized tests, first you should define a fixture |
| // class. It is usually derived from testing::TestWithParam<T> (see below for |
| // another inheritance scheme that's sometimes useful in more complicated |
| // class hierarchies), where the type of your parameter values. |
| // TestWithParam<T> is itself derived from testing::Test. T can be any |
| // copyable type. If it's a raw pointer, you are responsible for managing the |
| // lifespan of the pointed values. |
| |
| class FooTest : public ::testing::TestWithParam<const char*> { |
| // You can implement all the usual class fixture members here. |
| }; |
| |
| // Then, use the TEST_P macro to define as many parameterized tests |
| // for this fixture as you want. The _P suffix is for "parameterized" |
| // or "pattern", whichever you prefer to think. |
| |
| TEST_P(FooTest, DoesBlah) { |
| // Inside a test, access the test parameter with the GetParam() method |
| // of the TestWithParam<T> class: |
| EXPECT_TRUE(foo.Blah(GetParam())); |
| ... |
| } |
| |
| TEST_P(FooTest, HasBlahBlah) { |
| ... |
| } |
| |
| // Finally, you can use INSTANTIATE_TEST_SUITE_P to instantiate the test |
| // case with any set of parameters you want. Google Test defines a number |
| // of functions for generating test parameters. They return what we call |
| // (surprise!) parameter generators. Here is a summary of them, which |
| // are all in the testing namespace: |
| // |
| // |
| // Range(begin, end [, step]) - Yields values {begin, begin+step, |
| // begin+step+step, ...}. The values do not |
| // include end. step defaults to 1. |
| // Values(v1, v2, ..., vN) - Yields values {v1, v2, ..., vN}. |
| // ValuesIn(container) - Yields values from a C-style array, an STL |
| // ValuesIn(begin,end) container, or an iterator range [begin, end). |
| // Bool() - Yields sequence {false, true}. |
| // Combine(g1, g2, ..., gN) - Yields all combinations (the Cartesian product |
| // for the math savvy) of the values generated |
| // by the N generators. |
| // |
| // For more details, see comments at the definitions of these functions below |
| // in this file. |
| // |
| // The following statement will instantiate tests from the FooTest test suite |
| // each with parameter values "meeny", "miny", and "moe". |
| |
| INSTANTIATE_TEST_SUITE_P(InstantiationName, |
| FooTest, |
| Values("meeny", "miny", "moe")); |
| |
| // To distinguish different instances of the pattern, (yes, you |
| // can instantiate it more than once) the first argument to the |
| // INSTANTIATE_TEST_SUITE_P macro is a prefix that will be added to the |
| // actual test suite name. Remember to pick unique prefixes for different |
| // instantiations. The tests from the instantiation above will have |
| // these names: |
| // |
| // * InstantiationName/FooTest.DoesBlah/0 for "meeny" |
| // * InstantiationName/FooTest.DoesBlah/1 for "miny" |
| // * InstantiationName/FooTest.DoesBlah/2 for "moe" |
| // * InstantiationName/FooTest.HasBlahBlah/0 for "meeny" |
| // * InstantiationName/FooTest.HasBlahBlah/1 for "miny" |
| // * InstantiationName/FooTest.HasBlahBlah/2 for "moe" |
| // |
| // You can use these names in --gtest_filter. |
| // |
| // This statement will instantiate all tests from FooTest again, each |
| // with parameter values "cat" and "dog": |
| |
| const char* pets[] = {"cat", "dog"}; |
| INSTANTIATE_TEST_SUITE_P(AnotherInstantiationName, FooTest, ValuesIn(pets)); |
| |
| // The tests from the instantiation above will have these names: |
| // |
| // * AnotherInstantiationName/FooTest.DoesBlah/0 for "cat" |
| // * AnotherInstantiationName/FooTest.DoesBlah/1 for "dog" |
| // * AnotherInstantiationName/FooTest.HasBlahBlah/0 for "cat" |
| // * AnotherInstantiationName/FooTest.HasBlahBlah/1 for "dog" |
| // |
| // Please note that INSTANTIATE_TEST_SUITE_P will instantiate all tests |
| // in the given test suite, whether their definitions come before or |
| // AFTER the INSTANTIATE_TEST_SUITE_P statement. |
| // |
| // Please also note that generator expressions (including parameters to the |
| // generators) are evaluated in InitGoogleTest(), after main() has started. |
| // This allows the user on one hand, to adjust generator parameters in order |
| // to dynamically determine a set of tests to run and on the other hand, |
| // give the user a chance to inspect the generated tests with Google Test |
| // reflection API before RUN_ALL_TESTS() is executed. |
| // |
| // You can see samples/sample7_unittest.cc and samples/sample8_unittest.cc |
| // for more examples. |
| // |
| // In the future, we plan to publish the API for defining new parameter |
| // generators. But for now this interface remains part of the internal |
| // implementation and is subject to change. |
| // |
| // |
| // A parameterized test fixture must be derived from testing::Test and from |
| // testing::WithParamInterface<T>, where T is the type of the parameter |
| // values. Inheriting from TestWithParam<T> satisfies that requirement because |
| // TestWithParam<T> inherits from both Test and WithParamInterface. In more |
| // complicated hierarchies, however, it is occasionally useful to inherit |
| // separately from Test and WithParamInterface. For example: |
| |
| class BaseTest : public ::testing::Test { |
| // You can inherit all the usual members for a non-parameterized test |
| // fixture here. |
| }; |
| |
| class DerivedTest : public BaseTest, public ::testing::WithParamInterface<int> { |
| // The usual test fixture members go here too. |
| }; |
| |
| TEST_F(BaseTest, HasFoo) { |
| // This is an ordinary non-parameterized test. |
| } |
| |
| TEST_P(DerivedTest, DoesBlah) { |
| // GetParam works just the same here as if you inherit from TestWithParam. |
| EXPECT_TRUE(foo.Blah(GetParam())); |
| } |
| |
| #endif // 0 |
| |
| #include <iterator> |
| #include <utility> |
| |
| #include "gtest/internal/gtest-internal.h" |
| #include "gtest/internal/gtest-param-util.h" |
| #include "gtest/internal/gtest-port.h" |
| |
| namespace testing { |
| |
| // Functions producing parameter generators. |
| // |
| // Google Test uses these generators to produce parameters for value- |
| // parameterized tests. When a parameterized test suite is instantiated |
| // with a particular generator, Google Test creates and runs tests |
| // for each element in the sequence produced by the generator. |
| // |
| // In the following sample, tests from test suite FooTest are instantiated |
| // each three times with parameter values 3, 5, and 8: |
| // |
| // class FooTest : public TestWithParam<int> { ... }; |
| // |
| // TEST_P(FooTest, TestThis) { |
| // } |
| // TEST_P(FooTest, TestThat) { |
| // } |
| // INSTANTIATE_TEST_SUITE_P(TestSequence, FooTest, Values(3, 5, 8)); |
| // |
| |
| // Range() returns generators providing sequences of values in a range. |
| // |
| // Synopsis: |
| // Range(start, end) |
| // - returns a generator producing a sequence of values {start, start+1, |
| // start+2, ..., }. |
| // Range(start, end, step) |
| // - returns a generator producing a sequence of values {start, start+step, |
| // start+step+step, ..., }. |
| // Notes: |
| // * The generated sequences never include end. For example, Range(1, 5) |
| // returns a generator producing a sequence {1, 2, 3, 4}. Range(1, 9, 2) |
| // returns a generator producing {1, 3, 5, 7}. |
| // * start and end must have the same type. That type may be any integral or |
| // floating-point type or a user defined type satisfying these conditions: |
| // * It must be assignable (have operator=() defined). |
| // * It must have operator+() (operator+(int-compatible type) for |
| // two-operand version). |
| // * It must have operator<() defined. |
| // Elements in the resulting sequences will also have that type. |
| // * Condition start < end must be satisfied in order for resulting sequences |
| // to contain any elements. |
| // |
| template <typename T, typename IncrementT> |
| internal::ParamGenerator<T> Range(T start, T end, IncrementT step) { |
| return internal::ParamGenerator<T>( |
| new internal::RangeGenerator<T, IncrementT>(start, end, step)); |
| } |
| |
| template <typename T> |
| internal::ParamGenerator<T> Range(T start, T end) { |
| return Range(start, end, 1); |
| } |
| |
| // ValuesIn() function allows generation of tests with parameters coming from |
| // a container. |
| // |
| // Synopsis: |
| // ValuesIn(const T (&array)[N]) |
| // - returns a generator producing sequences with elements from |
| // a C-style array. |
| // ValuesIn(const Container& container) |
| // - returns a generator producing sequences with elements from |
| // an STL-style container. |
| // ValuesIn(Iterator begin, Iterator end) |
| // - returns a generator producing sequences with elements from |
| // a range [begin, end) defined by a pair of STL-style iterators. These |
| // iterators can also be plain C pointers. |
| // |
| // Please note that ValuesIn copies the values from the containers |
| // passed in and keeps them to generate tests in RUN_ALL_TESTS(). |
| // |
| // Examples: |
| // |
| // This instantiates tests from test suite StringTest |
| // each with C-string values of "foo", "bar", and "baz": |
| // |
| // const char* strings[] = {"foo", "bar", "baz"}; |
| // INSTANTIATE_TEST_SUITE_P(StringSequence, StringTest, ValuesIn(strings)); |
| // |
| // This instantiates tests from test suite StlStringTest |
| // each with STL strings with values "a" and "b": |
| // |
| // ::std::vector< ::std::string> GetParameterStrings() { |
| // ::std::vector< ::std::string> v; |
| // v.push_back("a"); |
| // v.push_back("b"); |
| // return v; |
| // } |
| // |
| // INSTANTIATE_TEST_SUITE_P(CharSequence, |
| // StlStringTest, |
| // ValuesIn(GetParameterStrings())); |
| // |
| // |
| // This will also instantiate tests from CharTest |
| // each with parameter values 'a' and 'b': |
| // |
| // ::std::list<char> GetParameterChars() { |
| // ::std::list<char> list; |
| // list.push_back('a'); |
| // list.push_back('b'); |
| // return list; |
| // } |
| // ::std::list<char> l = GetParameterChars(); |
| // INSTANTIATE_TEST_SUITE_P(CharSequence2, |
| // CharTest, |
| // ValuesIn(l.begin(), l.end())); |
| // |
| template <typename ForwardIterator> |
| internal::ParamGenerator< |
| typename std::iterator_traits<ForwardIterator>::value_type> |
| ValuesIn(ForwardIterator begin, ForwardIterator end) { |
| typedef typename std::iterator_traits<ForwardIterator>::value_type ParamType; |
| return internal::ParamGenerator<ParamType>( |
| new internal::ValuesInIteratorRangeGenerator<ParamType>(begin, end)); |
| } |
| |
| template <typename T, size_t N> |
| internal::ParamGenerator<T> ValuesIn(const T (&array)[N]) { |
| return ValuesIn(array, array + N); |
| } |
| |
| template <class Container> |
| internal::ParamGenerator<typename Container::value_type> ValuesIn( |
| const Container& container) { |
| return ValuesIn(container.begin(), container.end()); |
| } |
| |
| // Values() allows generating tests from explicitly specified list of |
| // parameters. |
| // |
| // Synopsis: |
| // Values(T v1, T v2, ..., T vN) |
| // - returns a generator producing sequences with elements v1, v2, ..., vN. |
| // |
| // For example, this instantiates tests from test suite BarTest each |
| // with values "one", "two", and "three": |
| // |
| // INSTANTIATE_TEST_SUITE_P(NumSequence, |
| // BarTest, |
| // Values("one", "two", "three")); |
| // |
| // This instantiates tests from test suite BazTest each with values 1, 2, 3.5. |
| // The exact type of values will depend on the type of parameter in BazTest. |
| // |
| // INSTANTIATE_TEST_SUITE_P(FloatingNumbers, BazTest, Values(1, 2, 3.5)); |
| // |
| // |
| template <typename... T> |
| internal::ValueArray<T...> Values(T... v) { |
| return internal::ValueArray<T...>(std::move(v)...); |
| } |
| |
| // Bool() allows generating tests with parameters in a set of (false, true). |
| // |
| // Synopsis: |
| // Bool() |
| // - returns a generator producing sequences with elements {false, true}. |
| // |
| // It is useful when testing code that depends on Boolean flags. Combinations |
| // of multiple flags can be tested when several Bool()'s are combined using |
| // Combine() function. |
| // |
| // In the following example all tests in the test suite FlagDependentTest |
| // will be instantiated twice with parameters false and true. |
| // |
| // class FlagDependentTest : public testing::TestWithParam<bool> { |
| // virtual void SetUp() { |
| // external_flag = GetParam(); |
| // } |
| // } |
| // INSTANTIATE_TEST_SUITE_P(BoolSequence, FlagDependentTest, Bool()); |
| // |
| inline internal::ParamGenerator<bool> Bool() { return Values(false, true); } |
| |
| // Combine() allows the user to combine two or more sequences to produce |
| // values of a Cartesian product of those sequences' elements. |
| // |
| // Synopsis: |
| // Combine(gen1, gen2, ..., genN) |
| // - returns a generator producing sequences with elements coming from |
| // the Cartesian product of elements from the sequences generated by |
| // gen1, gen2, ..., genN. The sequence elements will have a type of |
| // std::tuple<T1, T2, ..., TN> where T1, T2, ..., TN are the types |
| // of elements from sequences produces by gen1, gen2, ..., genN. |
| // |
| // Example: |
| // |
| // This will instantiate tests in test suite AnimalTest each one with |
| // the parameter values tuple("cat", BLACK), tuple("cat", WHITE), |
| // tuple("dog", BLACK), and tuple("dog", WHITE): |
| // |
| // enum Color { BLACK, GRAY, WHITE }; |
| // class AnimalTest |
| // : public testing::TestWithParam<std::tuple<const char*, Color> > {...}; |
| // |
| // TEST_P(AnimalTest, AnimalLooksNice) {...} |
| // |
| // INSTANTIATE_TEST_SUITE_P(AnimalVariations, AnimalTest, |
| // Combine(Values("cat", "dog"), |
| // Values(BLACK, WHITE))); |
| // |
| // This will instantiate tests in FlagDependentTest with all variations of two |
| // Boolean flags: |
| // |
| // class FlagDependentTest |
| // : public testing::TestWithParam<std::tuple<bool, bool> > { |
| // virtual void SetUp() { |
| // // Assigns external_flag_1 and external_flag_2 values from the tuple. |
| // std::tie(external_flag_1, external_flag_2) = GetParam(); |
| // } |
| // }; |
| // |
| // TEST_P(FlagDependentTest, TestFeature1) { |
| // // Test your code using external_flag_1 and external_flag_2 here. |
| // } |
| // INSTANTIATE_TEST_SUITE_P(TwoBoolSequence, FlagDependentTest, |
| // Combine(Bool(), Bool())); |
| // |
| template <typename... Generator> |
| internal::CartesianProductHolder<Generator...> Combine(const Generator&... g) { |
| return internal::CartesianProductHolder<Generator...>(g...); |
| } |
| |
| // ConvertGenerator() wraps a parameter generator in order to cast each produced |
| // value through a known type before supplying it to the test suite |
| // |
| // Synopsis: |
| // ConvertGenerator<T>(gen) |
| // - returns a generator producing the same elements as generated by gen, but |
| // each element is static_cast to type T before being returned |
| // |
| // It is useful when using the Combine() function to get the generated |
| // parameters in a custom type instead of std::tuple |
| // |
| // Example: |
| // |
| // This will instantiate tests in test suite AnimalTest each one with |
| // the parameter values tuple("cat", BLACK), tuple("cat", WHITE), |
| // tuple("dog", BLACK), and tuple("dog", WHITE): |
| // |
| // enum Color { BLACK, GRAY, WHITE }; |
| // struct ParamType { |
| // using TupleT = std::tuple<const char*, Color>; |
| // std::string animal; |
| // Color color; |
| // ParamType(TupleT t) : animal(std::get<0>(t)), color(std::get<1>(t)) {} |
| // }; |
| // class AnimalTest |
| // : public testing::TestWithParam<ParamType> {...}; |
| // |
| // TEST_P(AnimalTest, AnimalLooksNice) {...} |
| // |
| // INSTANTIATE_TEST_SUITE_P(AnimalVariations, AnimalTest, |
| // ConvertGenerator<ParamType::TupleT>( |
| // Combine(Values("cat", "dog"), |
| // Values(BLACK, WHITE)))); |
| // |
| template <typename T> |
| internal::ParamConverterGenerator<T> ConvertGenerator( |
| internal::ParamGenerator<T> gen) { |
| return internal::ParamConverterGenerator<T>(gen); |
| } |
| |
| #define TEST_P(test_suite_name, test_name) \ |
| class GTEST_TEST_CLASS_NAME_(test_suite_name, test_name) \ |
| : public test_suite_name, \ |
| private ::testing::internal::GTestNonCopyable { \ |
| public: \ |
| GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)() {} \ |
| void TestBody() override; \ |
| \ |
| private: \ |
| static int AddToRegistry() { \ |
| ::testing::UnitTest::GetInstance() \ |
| ->parameterized_test_registry() \ |
| .GetTestSuitePatternHolder<test_suite_name>( \ |
| GTEST_STRINGIFY_(test_suite_name), \ |
| ::testing::internal::CodeLocation(__FILE__, __LINE__)) \ |
| ->AddTestPattern( \ |
| GTEST_STRINGIFY_(test_suite_name), GTEST_STRINGIFY_(test_name), \ |
| new ::testing::internal::TestMetaFactory<GTEST_TEST_CLASS_NAME_( \ |
| test_suite_name, test_name)>(), \ |
| ::testing::internal::CodeLocation(__FILE__, __LINE__)); \ |
| return 0; \ |
| } \ |
| static int gtest_registering_dummy_ GTEST_ATTRIBUTE_UNUSED_; \ |
| }; \ |
| int GTEST_TEST_CLASS_NAME_(test_suite_name, \ |
| test_name)::gtest_registering_dummy_ = \ |
| GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)::AddToRegistry(); \ |
| void GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)::TestBody() |
| |
| // The last argument to INSTANTIATE_TEST_SUITE_P allows the user to specify |
| // generator and an optional function or functor that generates custom test name |
| // suffixes based on the test parameters. Such a function or functor should |
| // accept one argument of type testing::TestParamInfo<class ParamType>, and |
| // return std::string. |
| // |
| // testing::PrintToStringParamName is a builtin test suffix generator that |
| // returns the value of testing::PrintToString(GetParam()). |
| // |
| // Note: test names must be non-empty, unique, and may only contain ASCII |
| // alphanumeric characters or underscore. Because PrintToString adds quotes |
| // to std::string and C strings, it won't work for these types. |
| |
| #define GTEST_EXPAND_(arg) arg |
| #define GTEST_GET_FIRST_(first, ...) first |
| #define GTEST_GET_SECOND_(first, second, ...) second |
| |
| #define INSTANTIATE_TEST_SUITE_P(prefix, test_suite_name, ...) \ |
| static ::testing::internal::ParamGenerator<test_suite_name::ParamType> \ |
| gtest_##prefix##test_suite_name##_EvalGenerator_() { \ |
| return GTEST_EXPAND_(GTEST_GET_FIRST_(__VA_ARGS__, DUMMY_PARAM_)); \ |
| } \ |
| static ::std::string gtest_##prefix##test_suite_name##_EvalGenerateName_( \ |
| const ::testing::TestParamInfo<test_suite_name::ParamType>& info) { \ |
| if (::testing::internal::AlwaysFalse()) { \ |
| ::testing::internal::TestNotEmpty(GTEST_EXPAND_(GTEST_GET_SECOND_( \ |
| __VA_ARGS__, \ |
| ::testing::internal::DefaultParamName<test_suite_name::ParamType>, \ |
| DUMMY_PARAM_))); \ |
| auto t = std::make_tuple(__VA_ARGS__); \ |
| static_assert(std::tuple_size<decltype(t)>::value <= 2, \ |
| "Too Many Args!"); \ |
| } \ |
| return ((GTEST_EXPAND_(GTEST_GET_SECOND_( \ |
| __VA_ARGS__, \ |
| ::testing::internal::DefaultParamName<test_suite_name::ParamType>, \ |
| DUMMY_PARAM_))))(info); \ |
| } \ |
| static int gtest_##prefix##test_suite_name##_dummy_ \ |
| GTEST_ATTRIBUTE_UNUSED_ = \ |
| ::testing::UnitTest::GetInstance() \ |
| ->parameterized_test_registry() \ |
| .GetTestSuitePatternHolder<test_suite_name>( \ |
| GTEST_STRINGIFY_(test_suite_name), \ |
| ::testing::internal::CodeLocation(__FILE__, __LINE__)) \ |
| ->AddTestSuiteInstantiation( \ |
| GTEST_STRINGIFY_(prefix), \ |
| >est_##prefix##test_suite_name##_EvalGenerator_, \ |
| >est_##prefix##test_suite_name##_EvalGenerateName_, \ |
| __FILE__, __LINE__) |
| |
| // Allow Marking a Parameterized test class as not needing to be instantiated. |
| #define GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(T) \ |
| namespace gtest_do_not_use_outside_namespace_scope {} \ |
| static const ::testing::internal::MarkAsIgnored gtest_allow_ignore_##T( \ |
| GTEST_STRINGIFY_(T)) |
| |
| // Legacy API is deprecated but still available |
| #ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_ |
| #define INSTANTIATE_TEST_CASE_P \ |
| static_assert(::testing::internal::InstantiateTestCase_P_IsDeprecated(), \ |
| ""); \ |
| INSTANTIATE_TEST_SUITE_P |
| #endif // GTEST_REMOVE_LEGACY_TEST_CASEAPI_ |
| |
| } // namespace testing |
| |
| #endif // GOOGLETEST_INCLUDE_GTEST_GTEST_PARAM_TEST_H_ |
