diff options
Diffstat (limited to 'include/gtest/gtest.h')
| -rw-r--r-- | include/gtest/gtest.h | 97 |
1 files changed, 87 insertions, 10 deletions
diff --git a/include/gtest/gtest.h b/include/gtest/gtest.h index 226307ec..a13cfeb8 100644 --- a/include/gtest/gtest.h +++ b/include/gtest/gtest.h @@ -1291,24 +1291,101 @@ GTEST_API_ void InitGoogleTest(int* argc, wchar_t** argv); namespace internal { +// FormatForComparison<ToPrint, OtherOperand>::Format(value) formats a +// value of type ToPrint that is an operand of a comparison assertion +// (e.g. ASSERT_EQ). OtherOperand is the type of the other operand in +// the comparison, and is used to help determine the best way to +// format the value. In particular, when the value is a C string +// (char pointer) and the other operand is an STL string object, we +// want to format the C string as a string, since we know it is +// compared by value with the string object. If the value is a char +// pointer but the other operand is not an STL string object, we don't +// know whether the pointer is supposed to point to a NUL-terminated +// string, and thus want to print it as a pointer to be safe. +// +// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM. + +// The default case. +template <typename ToPrint, typename OtherOperand> +class FormatForComparison { + public: + static ::std::string Format(const ToPrint& value) { + return ::testing::PrintToString(value); + } +}; + +// Array. +template <typename ToPrint, size_t N, typename OtherOperand> +class FormatForComparison<ToPrint[N], OtherOperand> { + public: + static ::std::string Format(const ToPrint* value) { + return FormatForComparison<const ToPrint*, OtherOperand>::Format(value); + } +}; + +// By default, print C string as pointers to be safe, as we don't know +// whether they actually point to a NUL-terminated string. + +#define GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(CharType) \ + template <typename OtherOperand> \ + class FormatForComparison<CharType*, OtherOperand> { \ + public: \ + static ::std::string Format(CharType* value) { \ + return ::testing::PrintToString(static_cast<const void*>(value)); \ + } \ + } + +GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(char); +GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(const char); +GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(wchar_t); +GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(const wchar_t); + +#undef GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_ + +// If a C string is compared with an STL string object, we know it's meant +// to point to a NUL-terminated string, and thus can print it as a string. + +#define GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(CharType, OtherStringType) \ + template <> \ + class FormatForComparison<CharType*, OtherStringType> { \ + public: \ + static ::std::string Format(CharType* value) { \ + return ::testing::PrintToString(value); \ + } \ + } + +GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(char, ::std::string); +GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(const char, ::std::string); + +#if GTEST_HAS_GLOBAL_STRING +GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(char, ::string); +GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(const char, ::string); +#endif + +#if GTEST_HAS_GLOBAL_WSTRING +GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(wchar_t, ::wstring); +GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(const wchar_t, ::wstring); +#endif + +#if GTEST_HAS_STD_WSTRING +GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(wchar_t, ::std::wstring); +GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(const wchar_t, ::std::wstring); +#endif + +#undef GTEST_IMPL_FORMAT_C_STRING_AS_STRING_ + // Formats a comparison assertion (e.g. ASSERT_EQ, EXPECT_LT, and etc) // operand to be used in a failure message. The type (but not value) // of the other operand may affect the format. This allows us to // print a char* as a raw pointer when it is compared against another -// char*, and print it as a C string when it is compared against an -// std::string object, for example. -// -// The default implementation ignores the type of the other operand. -// Some specialized versions are used to handle formatting wide or -// narrow C strings. +// char* or void*, and print it as a C string when it is compared +// against an std::string object, for example. // // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM. template <typename T1, typename T2> String FormatForComparisonFailureMessage(const T1& value, const T2& /* other_operand */) { - // C++Builder compiles this incorrectly if the namespace isn't explicitly - // given. - return ::testing::PrintToString(value); + return FormatForComparison<T1, T2>::Format(value); } // The helper function for {ASSERT|EXPECT}_EQ. @@ -1320,7 +1397,7 @@ AssertionResult CmpHelperEQ(const char* expected_expression, #ifdef _MSC_VER # pragma warning(push) // Saves the current warning state. # pragma warning(disable:4389) // Temporarily disables warning on - // signed/unsigned mismatch. + // signed/unsigned mismatch. #endif if (expected == actual) { |