gtest-internal.h

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//   comment:          a comment on the test that will be included in the
//                     test output
//   fixture_class_id: ID of the test fixture class
//   set_up_tc:        pointer to the function that sets up the test case
//   tear_down_tc:     pointer to the function that tears down the test case
//   factory:          pointer to the factory that creates a test object.
//                     The newly created TestInfo instance will assume
//                     ownership of the factory object.
TestInfo* MakeAndRegisterTestInfo(
    const char* test_case_name, const char* name,
    const char* test_case_comment, const char* comment,
    TypeId fixture_class_id,
    SetUpTestCaseFunc set_up_tc,
    TearDownTestCaseFunc tear_down_tc,
    TestFactoryBase* factory);

#if defined(GTEST_HAS_TYPED_TEST) || defined(GTEST_HAS_TYPED_TEST_P)

// State of the definition of a type-parameterized test case.
class TypedTestCasePState {
 public:
  TypedTestCasePState() : registered_(false) {}

  // Adds the given test name to defined_test_names_ and return true
  // if the test case hasn't been registered; otherwise aborts the
  // program.
  bool AddTestName(const char* file, int line, const char* case_name,
                   const char* test_name) {
    if (registered_) {
      fprintf(stderr, "%s Test %s must be defined before "
              "REGISTER_TYPED_TEST_CASE_P(%s, ...).\n",
              FormatFileLocation(file, line).c_str(), test_name, case_name);
      abort();
    }
    defined_test_names_.insert(test_name);
    return true;
  }

  // Verifies that registered_tests match the test names in
  // defined_test_names_; returns registered_tests if successful, or
  // aborts the program otherwise.
  const char* VerifyRegisteredTestNames(
      const char* file, int line, const char* registered_tests);

 private:
  bool registered_;
  ::std::set<const char*> defined_test_names_;
};

// Skips to the first non-space char after the first comma in 'str';
// returns NULL if no comma is found in 'str'.
inline const char* SkipComma(const char* str) {
  const char* comma = strchr(str, ',');
  if (comma == NULL) {
    return NULL;
  }
  while (isspace(*(++comma))) {}
  return comma;
}

// Returns the prefix of 'str' before the first comma in it; returns
// the entire string if it contains no comma.
inline String GetPrefixUntilComma(const char* str) {
  const char* comma = strchr(str, ',');
  return comma == NULL ? String(str) : String(str, comma - str);
}

// TypeParameterizedTest<Fixture, TestSel, Types>::Register()
// registers a list of type-parameterized tests with Google Test.  The
// return value is insignificant - we just need to return something
// such that we can call this function in a namespace scope.
//
// Implementation note: The GTEST_TEMPLATE_ macro declares a template
// template parameter.  It's defined in gtest-type-util.h.
template <GTEST_TEMPLATE_ Fixture, class TestSel, typename Types>
class TypeParameterizedTest {
 public:
  // 'index' is the index of the test in the type list 'Types'
  // specified in INSTANTIATE_TYPED_TEST_CASE_P(Prefix, TestCase,
  // Types).  Valid values for 'index' are [0, N - 1] where N is the
  // length of Types.
  static bool Register(const char* prefix, const char* case_name,
                       const char* test_names, int index) {
    typedef typename Types::Head Type;
    typedef Fixture<Type> FixtureClass;
    typedef typename GTEST_BIND_(TestSel, Type) TestClass;

    // First, registers the first type-parameterized test in the type
    // list.
    MakeAndRegisterTestInfo(
        String::Format("%s%s%s/%d", prefix, prefix[0] == '\0' ? "" : "/",
                       case_name, index).c_str(),
        GetPrefixUntilComma(test_names).c_str(),
        String::Format("TypeParam = %s", GetTypeName<Type>().c_str()).c_str(),
        "",
        GetTypeId<FixtureClass>(),
        TestClass::SetUpTestCase,
        TestClass::TearDownTestCase,
        new TestFactoryImpl<TestClass>);

    // Next, recurses (at compile time) with the tail of the type list.
    return TypeParameterizedTest<Fixture, TestSel, typename Types::Tail>
        ::Register(prefix, case_name, test_names, index + 1);
  }
};

// The base case for the compile time recursion.
template <GTEST_TEMPLATE_ Fixture, class TestSel>
class TypeParameterizedTest<Fixture, TestSel, Types0> {
 public:
  static bool Register(const char* /*prefix*/, const char* /*case_name*/,
                       const char* /*test_names*/, int /*index*/) {
    return true;
  }
};

// TypeParameterizedTestCase<Fixture, Tests, Types>::Register()
// registers *all combinations* of 'Tests' and 'Types' with Google
// Test.  The return value is insignificant - we just need to return
// something such that we can call this function in a namespace scope.
template <GTEST_TEMPLATE_ Fixture, typename Tests, typename Types>
class TypeParameterizedTestCase {
 public:
  static bool Register(const char* prefix, const char* case_name,
                       const char* test_names) {
    typedef typename Tests::Head Head;

    // First, register the first test in 'Test' for each type in 'Types'.
    TypeParameterizedTest<Fixture, Head, Types>::Register(
        prefix, case_name, test_names, 0);

    // Next, recurses (at compile time) with the tail of the test list.
    return TypeParameterizedTestCase<Fixture, typename Tests::Tail, Types>
        ::Register(prefix, case_name, SkipComma(test_names));
  }
};

// The base case for the compile time recursion.
template <GTEST_TEMPLATE_ Fixture, typename Types>
class TypeParameterizedTestCase<Fixture, Templates0, Types> {
 public:
  static bool Register(const char* prefix, const char* case_name,
                       const char* test_names) {
    return true;
  }
};

#endif  // GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P

// Returns the current OS stack trace as a String.
//
// The maximum number of stack frames to be included is specified by
// the gtest_stack_trace_depth flag.  The skip_count parameter
// specifies the number of top frames to be skipped, which doesn't
// count against the number of frames to be included.
//
// For example, if Foo() calls Bar(), which in turn calls
// GetCurrentOsStackTraceExceptTop(..., 1), Foo() will be included in
// the trace but Bar() and GetCurrentOsStackTraceExceptTop() won't.
String GetCurrentOsStackTraceExceptTop(UnitTest* unit_test, int skip_count);

// Returns the number of failed test parts in the given test result object.
int GetFailedPartCount(const TestResult* result);

}  // namespace internal
}  // namespace testing

#define GTEST_MESSAGE_(message, result_type) \
  ::testing::internal::AssertHelper(result_type, __FILE__, __LINE__, message) \
    = ::testing::Message()

#define GTEST_FATAL_FAILURE_(message) \
  return GTEST_MESSAGE_(message, ::testing::TPRT_FATAL_FAILURE)

#define GTEST_NONFATAL_FAILURE_(message) \
  GTEST_MESSAGE_(message, ::testing::TPRT_NONFATAL_FAILURE)

#define GTEST_SUCCESS_(message) \
  GTEST_MESSAGE_(message, ::testing::TPRT_SUCCESS)

#define GTEST_TEST_THROW_(statement, expected_exception, fail) \
  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
  if (const char* gtest_msg = "") { \
    bool gtest_caught_expected = false; \
    try { \
      statement; \
    } \
    catch (expected_exception const&) { \
      gtest_caught_expected = true; \
    } \
    catch (...) { \
      gtest_msg = "Expected: " #statement " throws an exception of type " \
                  #expected_exception ".\n  Actual: it throws a different " \
                  "type."; \
      goto GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__); \
    } \
    if (!gtest_caught_expected) { \
      gtest_msg = "Expected: " #statement " throws an exception of type " \
                  #expected_exception ".\n  Actual: it throws nothing."; \
      goto GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__); \
    } \
  } else \
    GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__): \
      fail(gtest_msg)

#define GTEST_TEST_NO_THROW_(statement, fail) \
  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
  if (const char* gtest_msg = "") { \
    try { \
      statement; \
    } \
    catch (...) { \
      gtest_msg = "Expected: " #statement " doesn't throw an exception.\n" \
                  "  Actual: it throws."; \
      goto GTEST_CONCAT_TOKEN_(gtest_label_testnothrow_, __LINE__); \
    } \
  } else \
    GTEST_CONCAT_TOKEN_(gtest_label_testnothrow_, __LINE__): \
      fail(gtest_msg)

#define GTEST_TEST_ANY_THROW_(statement, fail) \
  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
  if (const char* gtest_msg = "") { \
    bool gtest_caught_any = false; \
    try { \
      statement; \
    } \
    catch (...) { \
      gtest_caught_any = true; \
    } \
    if (!gtest_caught_any) { \
      gtest_msg = "Expected: " #statement " throws an exception.\n" \
                  "  Actual: it doesn't."; \
      goto GTEST_CONCAT_TOKEN_(gtest_label_testanythrow_, __LINE__); \
    } \
  } else \
    GTEST_CONCAT_TOKEN_(gtest_label_testanythrow_, __LINE__): \
      fail(gtest_msg)


#define GTEST_TEST_BOOLEAN_(boolexpr, booltext, actual, expected, fail) \
  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
  if (boolexpr) \
    ; \
  else \
    fail("Value of: " booltext "\n  Actual: " #actual "\nExpected: " #expected)

#define GTEST_TEST_NO_FATAL_FAILURE_(statement, fail) \
  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
  if (const char* gtest_msg = "") { \
    ::testing::internal::HasNewFatalFailureHelper gtest_fatal_failure_checker; \
    { statement; } \
    if (gtest_fatal_failure_checker.has_new_fatal_failure()) { \
      gtest_msg = "Expected: " #statement " doesn't generate new fatal " \
                  "failures in the current thread.\n" \
                  "  Actual: it does."; \
      goto GTEST_CONCAT_TOKEN_(gtest_label_testnofatal_, __LINE__); \
    } \
  } else \
    GTEST_CONCAT_TOKEN_(gtest_label_testnofatal_, __LINE__): \
      fail(gtest_msg)

// Expands to the name of the class that implements the given test.
#define GTEST_TEST_CLASS_NAME_(test_case_name, test_name) \
  test_case_name##_##test_name##_Test

// Helper macro for defining tests.
#define GTEST_TEST_(test_case_name, test_name, parent_class, parent_id)\
class GTEST_TEST_CLASS_NAME_(test_case_name, test_name) : public parent_class {\
 public:\
  GTEST_TEST_CLASS_NAME_(test_case_name, test_name)() {}\
 private:\
  virtual void TestBody();\
  static ::testing::TestInfo* const test_info_;\
  GTEST_DISALLOW_COPY_AND_ASSIGN_(\
      GTEST_TEST_CLASS_NAME_(test_case_name, test_name));\
};\
\
::testing::TestInfo* const GTEST_TEST_CLASS_NAME_(test_case_name, test_name)\
  ::test_info_ =\
    ::testing::internal::MakeAndRegisterTestInfo(\
        #test_case_name, #test_name, "", "", \
        (parent_id), \
        parent_class::SetUpTestCase, \
        parent_class::TearDownTestCase, \
        new ::testing::internal::TestFactoryImpl<\
            GTEST_TEST_CLASS_NAME_(test_case_name, test_name)>);\
void GTEST_TEST_CLASS_NAME_(test_case_name, test_name)::TestBody()

#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_INTERNAL_H_