mcs/class/System.Net.Http/Test/System.Net.Http/HttpRequestMessageTest.cs

   1 //
   2 // HttpRequestMessageTest.cs
   3 //
   4 // Authors:
   5 //      Marek Safar  <marek.safar@gmail.com>
   6 //
   7 // Copyright (C) 2011 Xamarin, Inc (http://www.xamarin.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System;
  30 using System.Collections;
  31 using System.Collections.Generic;
  32 using NUnit.Framework;
  33 using System.Net.Http;
  34 using System.Net;
  35 using System.Net.Http.Headers;
  36 using System.Linq;
  37
  38 namespace MonoTests.System.Net.Http
  39 {
  40         [TestFixture]
  41         public class HttpRequestMessageTest
  42         {
  43                 [Test]
  44                 public void Ctor_Invalid ()
  45                 {
  46                         try {
  47                                 new HttpRequestMessage (null, "");
  48                                 Assert.Fail ("#1");
  49                         } catch (ArgumentNullException) {
  50                         }
  51                 }
  52
  53                 [Test]
  54                 public void Ctor_Default ()
  55                 {
  56                         var m = new HttpRequestMessage ();
  57                         Assert.IsNull (m.Content, "#1");
  58                         Assert.IsNotNull (m.Headers, "#2");
  59                         Assert.AreEqual (HttpMethod.Get, m.Method, "#3");
  60                         Assert.IsNotNull (m.Properties, "#4");
  61                         Assert.IsNull (m.RequestUri, "#5");
  62                         Assert.AreEqual (new Version (1, 1), m.Version, "#6");
  63                 }
  64
  65                 [Test]
  66                 public void Ctor_Uri ()
  67                 {
  68                         var c = new HttpRequestMessage (HttpMethod.Get, new Uri ("http://xamarin.com"));
  69                         Assert.AreEqual ("http://xamarin.com/", c.RequestUri.AbsoluteUri, "#1");
  70
  71                         c = new HttpRequestMessage (HttpMethod.Get, new Uri ("https://xamarin.com"));
  72                         Assert.AreEqual ("https://xamarin.com/", c.RequestUri.AbsoluteUri, "#2");
  73
  74                         c = new HttpRequestMessage (HttpMethod.Get, new Uri ("HTTP://xamarin.com:8080"));
  75                         Assert.AreEqual ("http://xamarin.com:8080/", c.RequestUri.AbsoluteUri, "#3");
  76
  77                         var a = Uri.UriSchemeHttps;
  78                         var b = new Uri ("http://xamarin.com");
  79
  80                         try {
  81                                 new HttpRequestMessage (HttpMethod.Get, new Uri ("ftp://xamarin.com"));
  82                                 Assert.Fail ("#4");
  83                         } catch (ArgumentException) {
  84                         }
  85                 }
  86
  87                 [Test]
  88                 public void Headers ()
  89                 {
  90                         HttpRequestMessage message = new HttpRequestMessage ();
  91                         HttpRequestHeaders headers = message.Headers;
  92
  93                         headers.Accept.Add (new MediaTypeWithQualityHeaderValue ("audio/x"));
  94                         headers.AcceptCharset.Add (new StringWithQualityHeaderValue ("str-v", 0.002));
  95                         headers.AcceptEncoding.Add (new StringWithQualityHeaderValue ("str-enc", 0.44));
  96                         headers.AcceptLanguage.Add (new StringWithQualityHeaderValue ("str-lang", 0.41));
  97                         headers.Authorization = new AuthenticationHeaderValue ("sh-aut", "par");
  98                         headers.CacheControl = new CacheControlHeaderValue () {
  99                                 MaxAge = TimeSpan.MaxValue
 100                         };
 101                         headers.Connection.Add ("test-value");
 102                         headers.ConnectionClose = true;
 103                         headers.Date = new DateTimeOffset (DateTime.Today);
 104                         headers.Expect.Add (new NameValueWithParametersHeaderValue ("en", "ev"));
 105                         headers.ExpectContinue = true;
 106                         headers.From = "webmaster@w3.org";
 107                         headers.Host = "host";
 108                         headers.IfMatch.Add (new EntityTagHeaderValue ("\"tag\"", true));
 109                         headers.IfModifiedSince = new DateTimeOffset (DateTime.Today);
 110                         headers.IfNoneMatch.Add (new EntityTagHeaderValue ("\"tag2\"", true));
 111                         headers.IfRange = new RangeConditionHeaderValue (new DateTimeOffset (DateTime.Today));
 112                         headers.IfUnmodifiedSince = new DateTimeOffset? (DateTimeOffset.Now);
 113                         headers.MaxForwards = 0x15b3;
 114                         headers.Pragma.Add (new NameValueHeaderValue ("name", "value"));
 115                         headers.ProxyAuthorization = new AuthenticationHeaderValue ("s", "p");
 116                         headers.Range = new RangeHeaderValue (5L, 30L);
 117                         headers.Referrer = new Uri ("http://xamarin.com");
 118                         headers.TE.Add (new TransferCodingWithQualityHeaderValue ("TE", 0.3));
 119                         headers.Trailer.Add ("value");
 120                         headers.TransferEncoding.Add (new TransferCodingHeaderValue ("tchv"));
 121                         headers.TransferEncodingChunked = true;
 122                         headers.Upgrade.Add (new ProductHeaderValue ("prod", "ver"));
 123                         headers.UserAgent.Add (new ProductInfoHeaderValue ("(comment)"));
 124                         headers.Via.Add (new ViaHeaderValue ("protocol", "rec-by"));
 125                         headers.Warning.Add (new WarningHeaderValue (5, "agent", "\"txt\""));
 126
 127                         try {
 128                                 headers.Add ("authorization", "");
 129                                 Assert.Fail ("Authorization");
 130                         } catch (FormatException) {
 131                         }
 132
 133                         try {
 134                                 headers.Add ("connection", "extra ß ");
 135                                 Assert.Fail ("Date");
 136                         } catch (FormatException) {
 137                         }
 138
 139                         try {
 140                                 headers.Add ("date", "");
 141                                 Assert.Fail ("Date");
 142                         } catch (FormatException) {
 143                         }
 144
 145                         try {
 146                                 headers.Add ("from", "a@w3.org");
 147                                 Assert.Fail ("From");
 148                         } catch (FormatException) {
 149                         }
 150
 151                         try {
 152                                 headers.Add ("hOst", "host");
 153                                 Assert.Fail ("Host");
 154                         } catch (FormatException) {
 155                         }
 156
 157                         try {
 158                                 headers.Add ("if-modified-since", "");
 159                                 Assert.Fail ("if-modified-since");
 160                         } catch (FormatException) {
 161                         }
 162
 163                         try {
 164                                 headers.Add ("if-range", "");
 165                                 Assert.Fail ("if-range");
 166                         } catch (FormatException) {
 167                         }
 168
 169                         try {
 170                                 headers.Add ("if-unmodified-since", "");
 171                                 Assert.Fail ("if-unmodified-since");
 172                         } catch (FormatException) {
 173                         }
 174
 175                         try {
 176                                 headers.Add ("max-forwards", "");
 177                                 Assert.Fail ("max-forwards");
 178                         } catch (FormatException) {
 179                         }
 180
 181                         try {
 182                                 headers.Add ("proxy-authorization", "");
 183                                 Assert.Fail ("proxy-authorization");
 184                         } catch (FormatException) {
 185                         }
 186
 187                         try {
 188                                 headers.Add ("range", "");
 189                         } catch (FormatException) {
 190                         }
 191
 192                         try {
 193                                 headers.Add ("referer", "");
 194                                 Assert.Fail ("referer");
 195                         } catch (FormatException) {
 196                         }
 197
 198                         headers.Add ("accept", "audio/y");
 199                         headers.Add ("accept-charset", "achs");
 200                         headers.Add ("accept-encoding", "aenc");
 201                         headers.Add ("accept-language", "alan");
 202                         headers.Add ("expect", "exp");
 203                         headers.Add ("if-match", "\"v\"");
 204                         headers.Add ("if-none-match", "\"v2\"");
 205                         headers.Add ("pragma", "p");
 206                         headers.Add ("TE", "0.8");
 207                         headers.Add ("trailer", "value2");
 208                         headers.Add ("transfer-encoding", "ttt");
 209                         headers.Add ("upgrade", "uuu");
 210                         headers.Add ("user-agent", "uaua");
 211                         headers.Add ("via", "prot v");
 212                         headers.Add ("warning", "4 ww \"t\"");
 213
 214                         Assert.IsTrue (headers.Accept.SequenceEqual (
 215                                 new[] {
 216                                         new MediaTypeWithQualityHeaderValue ("audio/x"),
 217                                         new MediaTypeWithQualityHeaderValue ("audio/y")
 218                                 }
 219                         ));
 220
 221                         Assert.IsTrue (headers.AcceptCharset.SequenceEqual (
 222                                 new[] {
 223                                         new StringWithQualityHeaderValue ("str-v", 0.002),
 224                                         new StringWithQualityHeaderValue ("achs")
 225                                 }
 226                         ));
 227
 228                         Assert.IsTrue (headers.AcceptEncoding.SequenceEqual (
 229                                 new[] {
 230                                         new StringWithQualityHeaderValue ("str-enc", 0.44),
 231                                         new StringWithQualityHeaderValue ("aenc")
 232                                 }
 233                         ));
 234
 235                         Assert.IsTrue (headers.AcceptLanguage.SequenceEqual (
 236                                 new[] {
 237                                         new StringWithQualityHeaderValue ("str-lang", 0.41),
 238                                         new StringWithQualityHeaderValue ("alan")
 239                                 }
 240                         ));
 241
 242                         Assert.AreEqual (new AuthenticationHeaderValue ("sh-aut", "par"), headers.Authorization);
 243
 244                         var cch = new CacheControlHeaderValue () {
 245                                         MaxAge = TimeSpan.MaxValue,
 246                                 };
 247
 248                         Assert.AreEqual (cch, headers.CacheControl);
 249
 250                         Assert.IsTrue (headers.Connection.SequenceEqual (
 251                                 new string[] { "test-value", "close" }));
 252
 253                         Assert.AreEqual (headers.Date, new DateTimeOffset (DateTime.Today));
 254
 255                         Assert.IsTrue (headers.Expect.SequenceEqual (
 256                                 new [] {
 257                                         new NameValueWithParametersHeaderValue ("en", "ev"),
 258                                         new NameValueWithParametersHeaderValue ("100-continue"),
 259                                         new NameValueWithParametersHeaderValue ("exp")
 260                                 }));
 261
 262                         Assert.AreEqual (headers.From, "webmaster@w3.org");
 263
 264                         Assert.IsTrue (headers.IfMatch.SequenceEqual (
 265                                 new EntityTagHeaderValue[] {
 266                                         new EntityTagHeaderValue ("\"tag\"", true),
 267                                         new EntityTagHeaderValue ("\"v\"", false)
 268                                 }
 269                         ));
 270
 271                         Assert.AreEqual (headers.IfModifiedSince, new DateTimeOffset (DateTime.Today));
 272                         Assert.IsTrue (headers.IfNoneMatch.SequenceEqual (new EntityTagHeaderValue[] { new EntityTagHeaderValue ("\"tag2\"", true), new EntityTagHeaderValue ("\"v2\"", false) }));
 273                         Assert.AreEqual (new DateTimeOffset (DateTime.Today), headers.IfRange.Date);
 274                         Assert.AreEqual (headers.MaxForwards, 0x15b3);
 275                         Assert.IsTrue (headers.Pragma.SequenceEqual (new NameValueHeaderValue[] { new NameValueHeaderValue ("name", "value"), new NameValueHeaderValue ("p", null) }));
 276                         Assert.AreEqual ("p", headers.ProxyAuthorization.Parameter);
 277                         Assert.AreEqual ("s", headers.ProxyAuthorization.Scheme);
 278                         Assert.AreEqual (5, headers.Range.Ranges.First ().From);
 279                         Assert.AreEqual (30, headers.Range.Ranges.First ().To);
 280                         Assert.AreEqual ("bytes", headers.Range.Unit);
 281                         Assert.AreEqual (headers.Referrer, new Uri ("http://xamarin.com"));
 282                         Assert.IsTrue (headers.TE.SequenceEqual (new TransferCodingWithQualityHeaderValue[] { new TransferCodingWithQualityHeaderValue ("TE", 0.3), new TransferCodingWithQualityHeaderValue ("0.8") }), "29");
 283                         Assert.IsTrue (headers.Trailer.SequenceEqual (
 284                                 new string[] {
 285                                         "value", "value2"
 286                                 }), "30");
 287
 288                         Assert.IsTrue (headers.TransferEncoding.SequenceEqual (
 289                                 new[] {
 290                                         new TransferCodingHeaderValue ("tchv"),
 291                                         new TransferCodingHeaderValue ("chunked"),
 292                                         new TransferCodingHeaderValue ("ttt")
 293                                 }
 294                         ));
 295
 296                         Assert.IsTrue (headers.Upgrade.SequenceEqual (
 297                                 new[] {
 298                                         new ProductHeaderValue ("prod", "ver"),
 299                                         new ProductHeaderValue ("uuu")
 300                                 }
 301                         ));
 302
 303                         Assert.IsTrue (headers.UserAgent.SequenceEqual (
 304                                 new[] {
 305                                         new ProductInfoHeaderValue ("(comment)"),
 306                                         new ProductInfoHeaderValue ("uaua", null)
 307                                 }
 308                         ));
 309
 310                         Assert.IsTrue (headers.Via.SequenceEqual (
 311                                 new[] {
 312                                         new ViaHeaderValue ("protocol", "rec-by"),
 313                                         new ViaHeaderValue ("prot", "v")
 314                                 }
 315                         ));
 316
 317                         Assert.IsTrue (headers.Warning.SequenceEqual (
 318                                 new[] {
 319                                         new WarningHeaderValue (5, "agent", "\"txt\""),
 320                                         new WarningHeaderValue (4, "ww", "\"t\"")
 321                                 }
 322                         ));
 323
 324                 }
 325
 326                 [Test]
 327                 public void Header_BaseImplementation ()
 328                 {
 329                         HttpRequestMessage message = new HttpRequestMessage ();
 330                         HttpRequestHeaders headers = message.Headers;
 331
 332                         headers.Add ("a", "a-value");
 333                         headers.Add ("b", new List<string> { "v1", "v2" });
 334                         headers.Add ("c", null as string);
 335                         headers.Add ("d", new string[0]);
 336
 337                         headers.AddWithoutValidation ("accept", "audio");
 338
 339                         Assert.IsFalse (headers.Contains ("nn"), "#1a");
 340                         Assert.IsTrue (headers.Contains ("b"), "#1b");
 341
 342                         var values = headers.GetValues ("b").ToList ();
 343                         Assert.AreEqual ("v1", values[0], "#2a");
 344                         Assert.AreEqual ("v2", values[1], "#2b");
 345
 346                         Assert.IsFalse (headers.Remove ("p"), "#3a");
 347                         Assert.IsTrue (headers.Remove ("b"), "#3b");
 348                         Assert.IsFalse (headers.Contains ("b"), "#3b-c");
 349
 350                         IEnumerable<string> values2;
 351                         Assert.IsTrue (headers.TryGetValues ("c", out values2));
 352                         values = values2.ToList ();
 353                         Assert.AreEqual ("", values[0], "#4a");
 354
 355                         int counter = 0;
 356                         foreach (var i in headers) {
 357                                 ++counter;
 358                         }
 359
 360                         Assert.AreEqual (3, counter, "#5");
 361
 362                         headers.Clear ();
 363
 364                         headers.Accept.Add (new MediaTypeWithQualityHeaderValue ("audio/x"));
 365                         headers.AddWithoutValidation ("accept", "audio");
 366
 367                         values = headers.GetValues ("accept").ToList ();
 368                         Assert.AreEqual (2, values.Count, "#6");
 369                         Assert.AreEqual ("audio/x", values[0], "#6a");
 370                         Assert.AreEqual ("audio", values[1], "#6b");
 371                         Assert.AreEqual (1, headers.Accept.Count, "#6c");
 372
 373                         headers.Clear ();
 374
 375                         headers.AddWithoutValidation ("from", new[] { "a@a.com", "ssss@oo.com" });
 376                         values = headers.GetValues ("from").ToList ();
 377
 378                         Assert.AreEqual (2, values.Count, "#7");
 379                         Assert.AreEqual ("a@a.com", values[0], "#7a");
 380                         Assert.AreEqual ("ssss@oo.com", values[1], "#7b");
 381                         Assert.AreEqual ("a@a.com", headers.From, "#7c");
 382
 383                         headers.Clear ();
 384
 385                         headers.AddWithoutValidation ("Date", "wrong date");
 386                         var value = headers.Date;
 387                         Assert.IsNull (headers.Date, "#8");
 388                 }
 389
 390                 [Test]
 391                 public void Headers_Invalid ()
 392                 {
 393                         HttpRequestMessage message = new HttpRequestMessage ();
 394                         HttpRequestHeaders headers = message.Headers;
 395
 396                         try {
 397                                 headers.Add ("Allow", "");
 398                                 Assert.Fail ("#1");
 399                         } catch (InvalidOperationException) {
 400                         }
 401
 402                         try {
 403                                 headers.Add (null, "");
 404                                 Assert.Fail ("#2");
 405                         } catch (ArgumentException) {
 406                         }
 407
 408                         try {
 409                                 headers.Add ("mm", null as IEnumerable<string>);
 410                                 Assert.Fail ("#2b");
 411                         } catch (ArgumentNullException) {
 412                         }
 413
 414                         try {
 415                                 headers.Add ("accept", "audio");
 416                                 Assert.Fail ("#2c");
 417                         } catch (FormatException) {
 418                         }
 419
 420                         try {
 421                                 headers.AddWithoutValidation ("Allow", "");
 422                                 Assert.Fail ("#3");
 423                         } catch (InvalidOperationException) {
 424                         }
 425
 426                         try {
 427                                 headers.AddWithoutValidation (null, "");
 428                                 Assert.Fail ("#4");
 429                         } catch (ArgumentException) {
 430                         }
 431
 432                         try {
 433                                 headers.Contains (null);
 434                                 Assert.Fail ("#5");
 435                         } catch (ArgumentException) {
 436                         }
 437
 438                         try {
 439                                 headers.GetValues (null);
 440                                 Assert.Fail ("#6a");
 441                         } catch (ArgumentException) {
 442                         }
 443
 444                         try {
 445                                 headers.GetValues ("bbbb");
 446                                 Assert.Fail ("#6b");
 447                         } catch (InvalidOperationException) {
 448                         }
 449
 450                         try {
 451                                 headers.Add ("from", new[] { "a@a.com", "ssss@oo.com" });
 452                                 Assert.Fail ("#7a");
 453                         } catch (FormatException) {
 454                         }
 455
 456                         headers.AddWithoutValidation ("from", "a@a.com");
 457                         try {
 458                                 headers.Add ("from", "valid@w3.org");
 459                                 Assert.Fail ("#7b");
 460                         } catch (FormatException) {
 461                         }
 462                 }
 463
 464                 [Test]
 465                 public void Headers_Response ()
 466                 {
 467                         HttpRequestMessage message = new HttpRequestMessage ();
 468                         HttpRequestHeaders headers = message.Headers;
 469
 470                         headers.Add ("Age", "vv");
 471                         Assert.AreEqual ("vv", headers.GetValues ("Age").First (), "#1");
 472
 473                         headers.Clear ();
 474                         headers.AddWithoutValidation ("Age", "vv");
 475                         Assert.AreEqual ("vv", headers.GetValues ("Age").First (), "#2");
 476                 }
 477
 478                 [Test]
 479                 public void Headers_ExpectContinue ()
 480                 {
 481                         HttpRequestMessage message = new HttpRequestMessage ();
 482                         HttpRequestHeaders headers = message.Headers;
 483                         Assert.IsNull (headers.ExpectContinue, "#1");
 484
 485                         headers.ExpectContinue = false;
 486                         Assert.IsFalse (headers.ExpectContinue.Value, "#2");
 487
 488                         headers.Clear ();
 489
 490                         headers.ExpectContinue = true;
 491                         headers.ExpectContinue = true;
 492                         headers.ExpectContinue = true;
 493                         headers.ExpectContinue = true;
 494                         Assert.IsTrue (headers.ExpectContinue.Value, "#3");
 495                         Assert.AreEqual (1, headers.GetValues ("expect").ToList ().Count, "#4");
 496
 497                         headers.Clear ();
 498                         headers.Expect.Add (new NameValueWithParametersHeaderValue ("100-conTinuE"));
 499                         Assert.IsTrue (headers.ExpectContinue.Value, "#5");
 500                 }
 501
 502                 [Test]
 503                 public void Headers_ConnectionClose ()
 504                 {
 505                         HttpRequestMessage message = new HttpRequestMessage ();
 506                         HttpRequestHeaders headers = message.Headers;
 507                         Assert.IsNull (headers.ConnectionClose, "#1");
 508
 509                         headers.ConnectionClose = false;
 510                         Assert.IsFalse (headers.ConnectionClose.Value, "#2");
 511
 512                         headers.Clear ();
 513
 514                         headers.ConnectionClose = true;
 515                         Assert.IsTrue (headers.ConnectionClose.Value, "#3");
 516
 517                         headers.Clear ();
 518                         headers.Connection.Add ("Close");
 519                         Assert.IsTrue (headers.ConnectionClose.Value, "#4");
 520                 }
 521
 522                 [Test]
 523                 public void Headers_From_Invalid ()
 524                 {
 525                         HttpRequestMessage message = new HttpRequestMessage ();
 526                         HttpRequestHeaders headers = message.Headers;
 527                         headers.From = null;
 528                         headers.From = "";
 529                         try {
 530                                 headers.From = " ";
 531                                 Assert.Fail ("#1");
 532                         } catch (FormatException) {
 533                         }
 534                         try {
 535                                 headers.From = "test";
 536                                 Assert.Fail ("#2");
 537                         } catch (FormatException) {
 538                         }
 539                 }
 540
 541                 [Test]
 542                 public void Headers_TransferEncodingChunked ()
 543                 {
 544                         HttpRequestMessage message = new HttpRequestMessage ();
 545                         HttpRequestHeaders headers = message.Headers;
 546                         Assert.IsNull (headers.TransferEncodingChunked, "#1");
 547
 548                         headers.TransferEncodingChunked = false;
 549                         Assert.IsFalse (headers.TransferEncodingChunked.Value, "#2");
 550
 551                         headers.Clear ();
 552
 553                         headers.TransferEncodingChunked = true;
 554                         Assert.IsTrue (headers.TransferEncodingChunked.Value, "#3");
 555                         Assert.AreEqual (1, headers.TransferEncoding.Count, "#3b");
 556                 }
 557
 558                 [Test]
 559                 public void Properties ()
 560                 {
 561                         var c = new HttpRequestMessage ();
 562                         c.Content = null;
 563                         c.Method = HttpMethod.Post;
 564                         c.Properties.Add ("a", "test");
 565                         c.RequestUri = null;
 566                         c.Version = HttpVersion.Version10;
 567
 568                         Assert.IsNull (c.Content, "#1");
 569                         Assert.AreEqual (HttpMethod.Post, c.Method, "#2");
 570                         Assert.AreEqual ("test", c.Properties["a"], "#3");
 571                         Assert.IsNull (c.RequestUri, "#4");
 572                         Assert.AreEqual (HttpVersion.Version10, c.Version, "#5");
 573                 }
 574
 575                 [Test]
 576                 public void Properties_Invalid ()
 577                 {
 578                         var c = new HttpRequestMessage ();
 579                         try {
 580                                 c.Method = null;
 581                                 Assert.Fail ("#1");
 582                         } catch (ArgumentNullException) {
 583                         }
 584
 585                         try {
 586                                 c.RequestUri = new Uri ("ftp://xamarin.com");
 587                                 Assert.Fail ("#2");
 588                         } catch (ArgumentException) {
 589                         }
 590
 591                         try {
 592                                 c.Version = null;
 593                                 Assert.Fail ("#3");
 594                         } catch (ArgumentNullException) {
 595                         }
 596                 }
 597         }
 598 }