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// Copyright 2008 Google Inc.

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//

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//

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//

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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(\

              "", ::testing::internal::CodeLocation(__FILE__, __LINE__), \

              #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, \

              ::testing::internal::CodeLocation(__FILE__, __LINE__), \

              &GTEST_TYPED_TEST_CASE_P_STATE_(CaseName), \

              #CaseName, GTEST_REGISTERED_TEST_NAMES_(CaseName))

#endif  // GTEST_HAS_TYPED_TEST_P

#endif  // GTEST_INCLUDE_GTEST_GTEST_TYPED_TEST_H_