| // 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 |
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| // |
| // Author: wan@google.com (Zhanyong Wan) |
| |
| #ifndef GTEST_INCLUDE_GTEST_GTEST_TYPED_TEST_H_ |
| #define GTEST_INCLUDE_GTEST_GTEST_TYPED_TEST_H_ |
| |
| // This header implements typed tests and type-parameterized tests. |
| |
| // Typed (aka type-driven) tests repeat the same test for types in a |
| // list. You must know which types you want to test with when writing |
| // typed tests. Here's how you do it: |
| |
| #if 0 |
| |
| // First, define a fixture class template. It should be parameterized |
| // by a type. Remember to derive it from testing::Test. |
| template <typename T> |
| class FooTest : public testing::Test { |
| public: |
| ... |
| typedef std::list<T> List; |
| static T shared_; |
| T value_; |
| }; |
| |
| // Next, associate a list of types with the test case, which will be |
| // repeated for each type in the list. The typedef is necessary for |
| // the macro to parse correctly. |
| typedef testing::Types<char, int, unsigned int> MyTypes; |
| TYPED_TEST_CASE(FooTest, MyTypes); |
| |
| // If the type list contains only one type, you can write that type |
| // directly without Types<...>: |
| // TYPED_TEST_CASE(FooTest, int); |
| |
| // Then, use TYPED_TEST() instead of TEST_F() to define as many typed |
| // tests for this test case as you want. |
| TYPED_TEST(FooTest, DoesBlah) { |
| // Inside a test, refer to TypeParam to get the type parameter. |
| // Since we are inside a derived class template, C++ requires use to |
| // visit the members of FooTest via 'this'. |
| TypeParam n = this->value_; |
| |
| // To visit static members of the fixture, add the TestFixture:: |
| // prefix. |
| n += TestFixture::shared_; |
| |
| // To refer to typedefs in the fixture, add the "typename |
| // TestFixture::" prefix. |
| typename TestFixture::List values; |
| values.push_back(n); |
| ... |
| } |
| |
| TYPED_TEST(FooTest, HasPropertyA) { ... } |
| |
| #endif // 0 |
| |
| // Type-parameterized tests are abstract test patterns parameterized |
| // by a type. Compared with typed tests, type-parameterized tests |
| // allow you to define the test pattern without knowing what the type |
| // parameters are. The defined pattern can be instantiated with |
| // different types any number of times, in any number of translation |
| // units. |
| // |
| // If you are designing an interface or concept, you can define a |
| // suite of type-parameterized tests to verify properties that any |
| // valid implementation of the interface/concept should have. Then, |
| // each implementation can easily instantiate the test suite to verify |
| // that it conforms to the requirements, without having to write |
| // similar tests repeatedly. Here's an example: |
| |
| #if 0 |
| |
| // First, define a fixture class template. It should be parameterized |
| // by a type. Remember to derive it from testing::Test. |
| template <typename T> |
| class FooTest : public testing::Test { |
| ... |
| }; |
| |
| // Next, declare that you will define a type-parameterized test case |
| // (the _P suffix is for "parameterized" or "pattern", whichever you |
| // prefer): |
| TYPED_TEST_CASE_P(FooTest); |
| |
| // Then, use TYPED_TEST_P() to define as many type-parameterized tests |
| // for this type-parameterized test case as you want. |
| TYPED_TEST_P(FooTest, DoesBlah) { |
| // Inside a test, refer to TypeParam to get the type parameter. |
| TypeParam n = 0; |
| ... |
| } |
| |
| TYPED_TEST_P(FooTest, HasPropertyA) { ... } |
| |
| // Now the tricky part: you need to register all test patterns before |
| // you can instantiate them. The first argument of the macro is the |
| // test case name; the rest are the names of the tests in this test |
| // case. |
| REGISTER_TYPED_TEST_CASE_P(FooTest, |
| DoesBlah, HasPropertyA); |
| |
| // Finally, you are free to instantiate the pattern with the types you |
| // want. If you put the above code in a header file, you can #include |
| // it in multiple C++ source files and instantiate it multiple times. |
| // |
| // To distinguish different instances of the pattern, the first |
| // argument to the INSTANTIATE_* macro is a prefix that will be added |
| // to the actual test case name. Remember to pick unique prefixes for |
| // different instances. |
| typedef testing::Types<char, int, unsigned int> MyTypes; |
| INSTANTIATE_TYPED_TEST_CASE_P(My, FooTest, MyTypes); |
| |
| // If the type list contains only one type, you can write that type |
| // directly without Types<...>: |
| // INSTANTIATE_TYPED_TEST_CASE_P(My, FooTest, int); |
| |
| #endif // 0 |
| |
| #include "gtest/internal/gtest-port.h" |
| #include "gtest/internal/gtest-type-util.h" |
| |
| // Implements typed tests. |
| |
| #if GTEST_HAS_TYPED_TEST |
| |
| // INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE. |
| // |
| // Expands to the name of the typedef for the type parameters of the |
| // given test case. |
| # define GTEST_TYPE_PARAMS_(TestCaseName) gtest_type_params_##TestCaseName##_ |
| |
| // The 'Types' template argument below must have spaces around it |
| // since some compilers may choke on '>>' when passing a template |
| // instance (e.g. Types<int>) |
| # define TYPED_TEST_CASE(CaseName, Types) \ |
| typedef ::testing::internal::TypeList< Types >::type \ |
| GTEST_TYPE_PARAMS_(CaseName) |
| |
| # define TYPED_TEST(CaseName, TestName) \ |
| template <typename gtest_TypeParam_> \ |
| class GTEST_TEST_CLASS_NAME_(CaseName, TestName) \ |
| : public CaseName<gtest_TypeParam_> { \ |
| private: \ |
| typedef CaseName<gtest_TypeParam_> TestFixture; \ |
| typedef gtest_TypeParam_ TypeParam; \ |
| virtual void TestBody(); \ |
| }; \ |
| bool gtest_##CaseName##_##TestName##_registered_ GTEST_ATTRIBUTE_UNUSED_ = \ |
| ::testing::internal::TypeParameterizedTest< \ |
| CaseName, \ |
| ::testing::internal::TemplateSel< \ |
| GTEST_TEST_CLASS_NAME_(CaseName, TestName)>, \ |
| GTEST_TYPE_PARAMS_(CaseName)>::Register(\ |
| "", #CaseName, #TestName, 0); \ |
| template <typename gtest_TypeParam_> \ |
| void GTEST_TEST_CLASS_NAME_(CaseName, TestName)<gtest_TypeParam_>::TestBody() |
| |
| #endif // GTEST_HAS_TYPED_TEST |
| |
| // Implements type-parameterized tests. |
| |
| #if GTEST_HAS_TYPED_TEST_P |
| |
| // INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE. |
| // |
| // Expands to the namespace name that the type-parameterized tests for |
| // the given type-parameterized test case are defined in. The exact |
| // name of the namespace is subject to change without notice. |
| # define GTEST_CASE_NAMESPACE_(TestCaseName) \ |
| gtest_case_##TestCaseName##_ |
| |
| // INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE. |
| // |
| // Expands to the name of the variable used to remember the names of |
| // the defined tests in the given test case. |
| # define GTEST_TYPED_TEST_CASE_P_STATE_(TestCaseName) \ |
| gtest_typed_test_case_p_state_##TestCaseName##_ |
| |
| // INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE DIRECTLY. |
| // |
| // Expands to the name of the variable used to remember the names of |
| // the registered tests in the given test case. |
| # define GTEST_REGISTERED_TEST_NAMES_(TestCaseName) \ |
| gtest_registered_test_names_##TestCaseName##_ |
| |
| // The variables defined in the type-parameterized test macros are |
| // static as typically these macros are used in a .h file that can be |
| // #included in multiple translation units linked together. |
| # define TYPED_TEST_CASE_P(CaseName) \ |
| static ::testing::internal::TypedTestCasePState \ |
| GTEST_TYPED_TEST_CASE_P_STATE_(CaseName) |
| |
| # define TYPED_TEST_P(CaseName, TestName) \ |
| namespace GTEST_CASE_NAMESPACE_(CaseName) { \ |
| template <typename gtest_TypeParam_> \ |
| class TestName : public CaseName<gtest_TypeParam_> { \ |
| private: \ |
| typedef CaseName<gtest_TypeParam_> TestFixture; \ |
| typedef gtest_TypeParam_ TypeParam; \ |
| virtual void TestBody(); \ |
| }; \ |
| static bool gtest_##TestName##_defined_ GTEST_ATTRIBUTE_UNUSED_ = \ |
| GTEST_TYPED_TEST_CASE_P_STATE_(CaseName).AddTestName(\ |
| __FILE__, __LINE__, #CaseName, #TestName); \ |
| } \ |
| template <typename gtest_TypeParam_> \ |
| void GTEST_CASE_NAMESPACE_(CaseName)::TestName<gtest_TypeParam_>::TestBody() |
| |
| # define REGISTER_TYPED_TEST_CASE_P(CaseName, ...) \ |
| namespace GTEST_CASE_NAMESPACE_(CaseName) { \ |
| typedef ::testing::internal::Templates<__VA_ARGS__>::type gtest_AllTests_; \ |
| } \ |
| static const char* const GTEST_REGISTERED_TEST_NAMES_(CaseName) = \ |
| GTEST_TYPED_TEST_CASE_P_STATE_(CaseName).VerifyRegisteredTestNames(\ |
| __FILE__, __LINE__, #__VA_ARGS__) |
| |
| // The 'Types' template argument below must have spaces around it |
| // since some compilers may choke on '>>' when passing a template |
| // instance (e.g. Types<int>) |
| # define INSTANTIATE_TYPED_TEST_CASE_P(Prefix, CaseName, Types) \ |
| bool gtest_##Prefix##_##CaseName GTEST_ATTRIBUTE_UNUSED_ = \ |
| ::testing::internal::TypeParameterizedTestCase<CaseName, \ |
| GTEST_CASE_NAMESPACE_(CaseName)::gtest_AllTests_, \ |
| ::testing::internal::TypeList< Types >::type>::Register(\ |
| #Prefix, #CaseName, GTEST_REGISTERED_TEST_NAMES_(CaseName)) |
| |
| #endif // GTEST_HAS_TYPED_TEST_P |
| |
| #endif // GTEST_INCLUDE_GTEST_GTEST_TYPED_TEST_H_ |