import encoding.utf8 fn test_validate_str() { assert utf8.validate_str('añçá') == true assert utf8.validate_str('\x61\xC3\xB1\xC3\xA7\xC3\xA1') == true assert utf8.validate_str('\xC0\xC1') == false assert utf8.validate_str('\xF5\xFF') == false assert utf8.validate_str('\xE0\xEF') == false }