ls-standard-library/test/lib/googletest-1.8.1/googletest/include/gtest/gtest-typed-test.h

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// GOOGLETEST_CM0001 DO NOT DELETE

#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) { ... }

// TYPED_TEST_CASE takes an optional third argument which allows to specify a
// class that generates custom test name suffixes based on the type. This should
// be a class which has a static template function GetName(int index) returning
// a string for each type. The provided integer index equals the index of the
// type in the provided type list. In many cases the index can be ignored.
//
// For example:
//   class MyTypeNames {
//    public:
//     template <typename T>
//     static std::string GetName(int) {
//       if (std::is_same<T, char>()) return "char";
//       if (std::is_same<T, int>()) return "int";
//       if (std::is_same<T, unsigned int>()) return "unsignedInt";
//     }
//   };
//   TYPED_TEST_CASE(FooTest, MyTypes, MyTypeNames);

#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);
//
// Similar to the optional argument of TYPED_TEST_CASE above,
// INSTANTIATE_TEST_CASE_P takes an optional fourth argument which allows to
// generate custom names.
//   INSTANTIATE_TYPED_TEST_CASE_P(My, FooTest, MyTypes, MyTypeNames);

#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##_

// Expands to the name of the typedef for the NameGenerator, responsible for
// creating the suffixes of the name.
#define GTEST_NAME_GENERATOR_(TestCaseName) \
  gtest_type_params_##TestCaseName##_NameGenerator

// 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);                                                           \
  typedef ::testing::internal::NameGeneratorSelector<__VA_ARGS__>::type    \
      GTEST_NAME_GENERATOR_(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();                                                  \
  };                                                                          \
  static 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,                   \
                                   ::testing::internal::GenerateNames<        \
                                       GTEST_NAME_GENERATOR_(CaseName),       \
                                       GTEST_TYPE_PARAMS_(CaseName)>());      \
  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_ATTRIBUTE_UNUSED_ = \
          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, ...)      \
  static 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),                \
                   ::testing::internal::GenerateNames<                    \
                       ::testing::internal::NameGeneratorSelector<        \
                           __VA_ARGS__>::type,                            \
                       ::testing::internal::TypeList< Types >::type>())

#endif  // GTEST_HAS_TYPED_TEST_P

#endif  // GTEST_INCLUDE_GTEST_GTEST_TYPED_TEST_H_