Function mingw_test

tests/string_formatter_test.cpp:95–102

template<typename T>
void mingw_test( const char *const old_pattern, const char *const new_pattern, const T &value )
{
    CAPTURE( old_pattern );
    CAPTURE( new_pattern );
    std::string original_result = cata::string_formatter::raw_string_format( old_pattern, value );
    std::string new_result = throwing_string_format( new_pattern, value );
    CHECK( original_result == new_result );
}

TEST_CASE( "string_formatter" )
{