public unsafe void GuidParsingUtf8(string format)
{
var parsedFormat = ParsedFormat.Parse(format);
var random = new Random(1000);
var guidBytes = new byte[16];
var expected = guidWithAllNonZeroDigits;
for (int i = 0; i < 100; i++)
{
var expectedString = expected.ToString(format, CultureInfo.InvariantCulture);
var utf8Bytes = Text.Encoding.UTF8.GetBytes(expectedString);
Assert.True(Utf8Parser.TryParseGuid(utf8Bytes, out Guid parsed, out int bytesConsumed, parsedFormat));
Assert.Equal(expected, parsed);
Assert.Equal(expectedString.Length, bytesConsumed);
random.NextBytes(guidBytes);
expected = new Guid(guidBytes);
}
}