public void TryParseAdd_AddBadAfterGoodValue_False()
 {
     HttpResponseHeaders headers = new HttpResponseHeaders();
     headers.WwwAuthenticate.Add(new AuthenticationHeaderValue("Negotiate"));
     string input = "Basic, D\rigest qop=\"auth\",algorithm=MD5-sess";
     Assert.False(headers.WwwAuthenticate.TryParseAdd(input));
     Assert.Equal("Negotiate", headers.WwwAuthenticate.ToString());
     Assert.Equal("WWW-Authenticate: Negotiate\r\n", headers.ToString());
 }
 public void TryParseAdd_AddBadValue_False()
 {
     HttpResponseHeaders headers = new HttpResponseHeaders();
     string input = "Basic, D\rigest qop=\"auth\",algorithm=MD5-sess";
     Assert.False(headers.WwwAuthenticate.TryParseAdd(input));
     Assert.Equal(string.Empty, headers.WwwAuthenticate.ToString());
     Assert.Equal(string.Empty, headers.ToString());
 }