public void TryParse_GoodValues_Success()
{
HttpRequestMessage request = new HttpRequestMessage();
string input = " Digest qop=\"auth\",algorithm=MD5-sess,nonce=\"+Upgraded+v109e309640b\",realm=\"Digest\" ";
AuthenticationHeaderValue parsedValue;
Assert.True(AuthenticationHeaderValue.TryParse(input, out parsedValue));
request.Headers.Authorization = parsedValue;
Assert.Equal(input.Trim(), request.Headers.Authorization.ToString());
}