toString handles wchar_t raw strings

include/internal/catch_tostring.h

@@ -154,6 +154,8 @@ std::string toString( std::string const& value );
 std::string toString( std::wstring const& value );
 std::string toString( const char* const value );
 std::string toString( char* const value );
+std::string toString( const wchar_t* const value );
+std::string toString( wchar_t* const value );
 std::string toString( int value );
 std::string toString( unsigned long value );
 std::string toString( unsigned int value );

include/internal/catch_tostring.hpp

@@ -84,6 +84,16 @@ std::string toString( char* const value ) {
     return Catch::toString( static_cast<const char*>( value ) );
 }
 
+std::string toString( const wchar_t* const value )
+{
+	return value ? Catch::toString( std::wstring(value) ) : std::string( "{null string}" );
+}
+
+std::string toString( wchar_t* const value )
+{
+	return Catch::toString( static_cast<const wchar_t*>( value ) );
+}
+
 std::string toString( int value ) {
     std::ostringstream oss;
     oss << value;