mcs/class/corlib/Test/System.Threading.Tasks/TaskTest.cs

   1 //
   2 // TaskTest.cs
   3 //
   4 // Authors:
   5 //      Marek Safar  <marek.safar@gmail.com>
   6 //
   7 // Copyright (c) 2008 Jérémie "Garuma" Laval
   8 // Copyright (C) 2011 Xamarin Inc (http://www.xamarin.com)
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining a copy
  11 // of this software and associated documentation files (the "Software"), to deal
  12 // in the Software without restriction, including without limitation the rights
  13 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  14 // copies of the Software, and to permit persons to whom the Software is
  15 // furnished to do so, subject to the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be included in
  18 // all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  21 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  23 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  24 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  25 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  26 // THE SOFTWARE.
  27 //
  28 //
  29
  30 #if NET_4_0
  31
  32 using System;
  33 using System.Threading;
  34 using System.Threading.Tasks;
  35 using System.Collections.Generic;
  36 using NUnit.Framework;
  37
  38 namespace MonoTests.System.Threading.Tasks
  39 {
  40         [TestFixture]
  41         public class TaskTests
  42         {
  43                 class MockScheduler : TaskScheduler
  44                 {
  45                         public event Action<Task, bool> TryExecuteTaskInlineHandler;
  46
  47                         protected override IEnumerable<Task> GetScheduledTasks ()
  48                         {
  49                                 throw new NotImplementedException ();
  50                         }
  51
  52                         protected override void QueueTask (Task task)
  53                         {
  54                                 return;
  55                         }
  56
  57                         protected override bool TryExecuteTaskInline (Task task, bool taskWasPreviouslyQueued)
  58                         {
  59                                 if (TryExecuteTaskInlineHandler != null)
  60                                         TryExecuteTaskInlineHandler (task, taskWasPreviouslyQueued);
  61
  62                                 return base.TryExecuteTask (task);
  63                         }
  64                 }
  65
  66
  67                 Task[] tasks;
  68                 const int max = 6;
  69
  70                 [SetUp]
  71                 public void Setup()
  72                 {
  73                         tasks = new Task[max];
  74                 }
  75
  76                 void InitWithDelegate(Action action)
  77                 {
  78                         for (int i = 0; i < max; i++) {
  79                                 tasks[i] = Task.Factory.StartNew(action);
  80                         }
  81                 }
  82
  83                 [Test]
  84                 public void WaitAnyTest()
  85                 {
  86                         ParallelTestHelper.Repeat (delegate {
  87                                 int flag = 0;
  88                                 int finished = 0;
  89
  90                                 InitWithDelegate(delegate {
  91                                         int times = Interlocked.Exchange (ref flag, 1);
  92                                         if (times == 1) {
  93                                                 SpinWait sw = new SpinWait ();
  94                                                 while (finished == 0) sw.SpinOnce ();
  95                                         } else {
  96                                                 Interlocked.Increment (ref finished);
  97                                         }
  98                                 });
  99
 100                                 int index = Task.WaitAny(tasks, 1000);
 101
 102                                 Assert.AreNotEqual (-1, index, "#3");
 103                                 Assert.AreEqual (1, flag, "#1");
 104                                 Assert.AreEqual (1, finished, "#2");
 105                         });
 106                 }
 107
 108                 [Test]
 109                 public void WaitAny_Empty ()
 110                 {
 111                         Assert.AreEqual (-1, Task.WaitAny (new Task[0]));
 112                 }
 113
 114                 [Test]
 115                 public void WaitAny_Zero ()
 116                 {
 117                         Assert.AreEqual (-1, Task.WaitAny (new[] { new Task (delegate { })}, 0), "#1");
 118                         Assert.AreEqual (-1, Task.WaitAny (new[] { new Task (delegate { }) }, 20), "#1");
 119                 }
 120
 121                 [Test]
 122                 public void WaitAny_Cancelled ()
 123                 {
 124                         var cancelation = new CancellationTokenSource ();
 125                         var tasks = new Task[] {
 126                                 new Task (delegate { }),
 127                                 new Task (delegate { }, cancelation.Token)
 128                         };
 129
 130                         cancelation.Cancel ();
 131
 132                         Assert.AreEqual (1, Task.WaitAny (tasks, 1000), "#1");
 133                         Assert.IsTrue (tasks[1].IsCompleted, "#2");
 134                         Assert.IsTrue (tasks[1].IsCanceled, "#3");
 135                 }
 136
 137                 [Test]
 138                 public void WaitAny_CancelledWithoutExecution ()
 139                 {
 140                         var cancelation = new CancellationTokenSource ();
 141                         var tasks = new Task[] {
 142                                 new Task (delegate { }),
 143                                 new Task (delegate { })
 144                         };
 145
 146                         int res = 0;
 147                         var mre = new ManualResetEventSlim (false);
 148                         ThreadPool.QueueUserWorkItem (delegate {
 149                                 res = Task.WaitAny (tasks, 20);
 150                                 mre.Set ();
 151                         });
 152
 153                         cancelation.Cancel ();
 154                         Assert.IsTrue (mre.Wait (1000), "#1");
 155                         Assert.AreEqual (-1, res);
 156                 }
 157
 158                 [Test]
 159                 public void WaitAny_OneException ()
 160                 {
 161                         var mre = new ManualResetEventSlim (false);
 162                         var tasks = new Task[] {
 163                                 Task.Factory.StartNew (delegate { mre.Wait (1000); }),
 164                                 Task.Factory.StartNew (delegate { throw new ApplicationException (); })
 165                         };
 166
 167                         Assert.AreEqual (1, Task.WaitAny (tasks, 1000), "#1");
 168                         Assert.IsFalse (tasks[0].IsCompleted, "#2");
 169                         Assert.IsTrue (tasks[1].IsFaulted, "#3");
 170
 171                         mre.Set ();
 172                 }
 173
 174                 [Test]
 175                 public void WaitAny_SingleCanceled ()
 176                 {
 177                         var src = new CancellationTokenSource ();
 178                         var t = Task.Factory.StartNew (() => { Thread.Sleep (200); src.Cancel (); src.Token.ThrowIfCancellationRequested (); }, src.Token);
 179                         Assert.AreEqual (0, Task.WaitAny (new [] { t }));
 180                 }
 181
 182                 public void WaitAny_ManyExceptions ()
 183                 {
 184                         CountdownEvent cde = new CountdownEvent (3);
 185                         var tasks = new [] {
 186                                 Task.Factory.StartNew (delegate { try { throw new ApplicationException (); } finally { cde.Signal (); } }),
 187                                 Task.Factory.StartNew (delegate { try { throw new ApplicationException (); } finally { cde.Signal (); } }),
 188                                 Task.Factory.StartNew (delegate { try { throw new ApplicationException (); } finally { cde.Signal (); } })
 189                         };
 190
 191                         Assert.IsTrue (cde.Wait (1000), "#1");
 192
 193                         try {
 194                                 Assert.IsTrue (Task.WaitAll (tasks, 1000), "#2");
 195                         } catch (AggregateException e) {
 196                                 Assert.AreEqual (3, e.InnerExceptions.Count, "#3");
 197                         }
 198                 }
 199
 200                 [Test]
 201                 public void WaitAny_ManyCanceled ()
 202                 {
 203                         var cancellation = new CancellationToken (true);
 204                         var tasks = new[] {
 205                                 Task.Factory.StartNew (delegate { }, cancellation),
 206                                 Task.Factory.StartNew (delegate { }, cancellation),
 207                                 Task.Factory.StartNew (delegate { }, cancellation)
 208                         };
 209
 210                         try {
 211                                 Assert.IsTrue (Task.WaitAll (tasks, 1000), "#1");
 212                         } catch (AggregateException e) {
 213                                 Assert.AreEqual (3, e.InnerExceptions.Count, "#2");
 214                         }
 215                 }
 216
 217                 [Test]
 218                 public void WaitAllTest ()
 219                 {
 220                         ParallelTestHelper.Repeat (delegate {
 221                                 int achieved = 0;
 222                                 InitWithDelegate(delegate { Interlocked.Increment(ref achieved); });
 223                                 Task.WaitAll(tasks);
 224                                 Assert.AreEqual(max, achieved, "#1");
 225                         });
 226                 }
 227
 228                 [Test]
 229                 public void WaitAll_ManyTasks ()
 230                 {
 231                         for (int r = 0; r < 2000; ++r) {
 232                                 var tasks = new Task[60];
 233
 234                                 for (int i = 0; i < tasks.Length; i++) {
 235                                         tasks[i] = Task.Factory.StartNew (delegate { Thread.Sleep (0); });
 236                                 }
 237
 238                                 Assert.IsTrue (Task.WaitAll (tasks, 2000));
 239                         }
 240                 }
 241
 242                 [Test]
 243                 public void WaitAll_Zero ()
 244                 {
 245                         Assert.IsFalse (Task.WaitAll (new Task[1] { new Task (delegate { }) }, 0), "#0");
 246                         Assert.IsFalse (Task.WaitAll (new Task[1] { new Task (delegate { }) }, 10), "#1");
 247                 }
 248
 249                 [Test]
 250                 public void WaitAll_WithExceptions ()
 251                 {
 252                         InitWithDelegate (delegate { throw new ApplicationException (); });
 253
 254                         try {
 255                                 Task.WaitAll (tasks);
 256                                 Assert.Fail ("#1");
 257                         } catch (AggregateException e) {
 258                                 Assert.AreEqual (6, e.InnerExceptions.Count, "#2");
 259                         }
 260
 261                         Assert.IsNotNull (tasks[0].Exception, "#3");
 262                 }
 263
 264                 [Test]
 265                 public void WaitAll_TimeoutWithExceptionsAfter ()
 266                 {
 267                         CountdownEvent cde = new CountdownEvent (2);
 268                         var mre = new ManualResetEvent (false);
 269                         var tasks = new[] {
 270                                 Task.Factory.StartNew (delegate { mre.WaitOne (); }),
 271                                 Task.Factory.StartNew (delegate { try { throw new ApplicationException (); } finally { cde.Signal (); } }),
 272                                 Task.Factory.StartNew (delegate { try { throw new ApplicationException (); } finally { cde.Signal (); } })
 273                         };
 274
 275                         Assert.IsTrue (cde.Wait (1000), "#1");
 276                         Assert.IsFalse (Task.WaitAll (tasks, 1000), "#2");
 277
 278                         mre.Set ();
 279
 280                         try {
 281                                 Assert.IsTrue (Task.WaitAll (tasks, 1000), "#3");
 282                                 Assert.Fail ("#4");
 283                         } catch (AggregateException e) {
 284                                 Assert.AreEqual (2, e.InnerExceptions.Count, "#5");
 285                         }
 286                 }
 287
 288                 [Test]
 289                 public void WaitAll_TimeoutWithExceptionsBefore ()
 290                 {
 291                         CountdownEvent cde = new CountdownEvent (2);
 292                         var mre = new ManualResetEvent (false);
 293                         var tasks = new[] {
 294                                 Task.Factory.StartNew (delegate { try { throw new ApplicationException (); } finally { cde.Signal (); } }),
 295                                 Task.Factory.StartNew (delegate { try { throw new ApplicationException (); } finally { cde.Signal (); } }),
 296                                 Task.Factory.StartNew (delegate { mre.WaitOne (); })
 297                         };
 298
 299                         Assert.IsTrue (cde.Wait (1000), "#1");
 300                         Assert.IsFalse (Task.WaitAll (tasks, 1000), "#2");
 301
 302                         mre.Set ();
 303
 304                         try {
 305                                 Assert.IsTrue (Task.WaitAll (tasks, 1000), "#3");
 306                                 Assert.Fail ("#4");
 307                         } catch (AggregateException e) {
 308                                 Assert.AreEqual (2, e.InnerExceptions.Count, "#5");
 309                         }
 310                 }
 311
 312                 [Test]
 313                 public void WaitAll_Cancelled ()
 314                 {
 315                         var cancelation = new CancellationTokenSource ();
 316                         var tasks = new Task[] {
 317                                 new Task (delegate { cancelation.Cancel (); }),
 318                                 new Task (delegate { }, cancelation.Token)
 319                         };
 320
 321                         tasks[0].Start ();
 322
 323                         try {
 324                                 Task.WaitAll (tasks);
 325                                 Assert.Fail ("#1");
 326                         } catch (AggregateException e) {
 327                                 var inner = (TaskCanceledException) e.InnerException;
 328                                 Assert.AreEqual (tasks[1], inner.Task, "#2");
 329                         }
 330
 331                         Assert.IsTrue (tasks[0].IsCompleted, "#3");
 332                         Assert.IsTrue (tasks[1].IsCanceled, "#4");
 333                 }
 334
 335                 [Test]
 336                 public void WaitAll_CancelledAndTimeout ()
 337                 {
 338                         var ct = new CancellationToken (true);
 339                         var t1 = new Task (() => {}, ct);
 340                         var t2 = Task.Delay (3000);
 341                         Assert.IsFalse (Task.WaitAll (new[] { t1, t2 }, 10));
 342                 }
 343
 344                 [Test]
 345                 public void WaitAllExceptionThenCancelled ()
 346                 {
 347                         var cancelation = new CancellationTokenSource ();
 348                         var tasks = new Task[] {
 349                                 new Task (delegate { cancelation.Cancel (); throw new ApplicationException (); }),
 350                                 new Task (delegate { }, cancelation.Token)
 351                         };
 352
 353                         tasks[0].Start ();
 354
 355                         try {
 356                                 Task.WaitAll (tasks);
 357                                 Assert.Fail ("#1");
 358                         } catch (AggregateException e) {
 359                                 Assert.IsInstanceOfType (typeof (ApplicationException), e.InnerException, "#2");
 360                                 var inner = (TaskCanceledException) e.InnerExceptions[1];
 361                                 Assert.AreEqual (tasks[1], inner.Task, "#3");
 362                         }
 363
 364                         Assert.IsTrue (tasks[0].IsCompleted, "#4");
 365                         Assert.IsTrue (tasks[1].IsCanceled, "#5");
 366                 }
 367
 368                 [Test]
 369                 public void WaitAll_StartedUnderWait ()
 370                 {
 371                         var task1 = new Task (delegate { });
 372
 373                         ThreadPool.QueueUserWorkItem (delegate {
 374                                 // Sleep little to let task to start and hit internal wait
 375                                 Thread.Sleep (20);
 376                                 task1.Start ();
 377                         });
 378
 379                         Assert.IsTrue (Task.WaitAll (new [] { task1 }, 1000), "#1");
 380                 }
 381
 382                 [Test]
 383                 public void CancelBeforeStart ()
 384                 {
 385                         var src = new CancellationTokenSource ();
 386
 387                         Task t = new Task (delegate { }, src.Token);
 388                         src.Cancel ();
 389                         Assert.AreEqual (TaskStatus.Canceled, t.Status, "#1");
 390
 391                         try {
 392                                 t.Start ();
 393                                 Assert.Fail ("#2");
 394                         } catch (InvalidOperationException) {
 395                         }
 396                 }
 397
 398                 [Test]
 399                 public void Wait_CancelledTask ()
 400                 {
 401                         var src = new CancellationTokenSource ();
 402
 403                         Task t = new Task (delegate { }, src.Token);
 404                         src.Cancel ();
 405
 406                         try {
 407                                 t.Wait (1000);
 408                                 Assert.Fail ("#1");
 409                         } catch (AggregateException e) {
 410                                 var details = (TaskCanceledException) e.InnerException;
 411                                 Assert.AreEqual (t, details.Task, "#1e");
 412                         }
 413
 414                         try {
 415                                 t.Wait ();
 416                                 Assert.Fail ("#2");
 417                         } catch (AggregateException e) {
 418                                 var details = (TaskCanceledException) e.InnerException;
 419                                 Assert.AreEqual (t, details.Task, "#2e");
 420                                 Assert.IsNull (details.Task.Exception, "#2e2");
 421                         }
 422                 }
 423
 424                 [Test]
 425                 public void Wait_Inlined ()
 426                 {
 427                         bool? previouslyQueued = null;
 428
 429                         var scheduler = new MockScheduler ();
 430                         scheduler.TryExecuteTaskInlineHandler += (task, b) => {
 431                                 previouslyQueued = b;
 432                         };
 433
 434                         var tf = new TaskFactory (scheduler);
 435                         var t = tf.StartNew (() => { });
 436                         t.Wait ();
 437
 438                         Assert.AreEqual (true, previouslyQueued);
 439                 }
 440
 441                 [Test, ExpectedException (typeof (InvalidOperationException))]
 442                 public void CreationWhileInitiallyCanceled ()
 443                 {
 444                         var token = new CancellationToken (true);
 445                         var task = new Task (() => { }, token);
 446                         Assert.AreEqual (TaskStatus.Canceled, task.Status);
 447                         task.Start ();
 448                 }
 449
 450                 [Test]
 451                 public void ContinueWithInvalidArguments ()
 452                 {
 453                         var task = new Task (() => { });
 454                         try {
 455                                 task.ContinueWith (null);
 456                                 Assert.Fail ("#1");
 457                         } catch (ArgumentException) {
 458                         }
 459
 460                         try {
 461                                 task.ContinueWith (delegate { }, null);
 462                                 Assert.Fail ("#2");
 463                         } catch (ArgumentException) {
 464                         }
 465
 466                         try {
 467                                 task.ContinueWith (delegate { }, TaskContinuationOptions.OnlyOnCanceled | TaskContinuationOptions.NotOnCanceled);
 468                                 Assert.Fail ("#3");
 469                         } catch (ArgumentException) {
 470                         }
 471
 472                         try {
 473                                 task.ContinueWith (delegate { }, TaskContinuationOptions.OnlyOnRanToCompletion | TaskContinuationOptions.NotOnRanToCompletion);
 474                                 Assert.Fail ("#4");
 475                         } catch (ArgumentException) {
 476                         }
 477                 }
 478
 479                 [Test]
 480                 public void ContinueWithOnAnyTestCase()
 481                 {
 482                         ParallelTestHelper.Repeat (delegate {
 483                                 bool result = false;
 484
 485                                 Task t = Task.Factory.StartNew(delegate { });
 486                                 Task cont = t.ContinueWith(delegate { result = true; }, TaskContinuationOptions.None);
 487                                 Assert.IsTrue (t.Wait (2000), "First wait, (status, {0})", t.Status);
 488                                 Assert.IsTrue (cont.Wait(2000), "Cont wait, (result, {0}) (parent status, {2}) (status, {1})", result, cont.Status, t.Status);
 489                                 Assert.IsNull(cont.Exception, "#1");
 490                                 Assert.IsNotNull(cont, "#2");
 491                                 Assert.IsTrue(result, "#3");
 492                         });
 493                 }
 494
 495                 [Test]
 496                 public void ContinueWithOnCompletedSuccessfullyTestCase()
 497                 {
 498                         ParallelTestHelper.Repeat (delegate {
 499                                 bool result = false;
 500
 501                                 Task t = Task.Factory.StartNew(delegate { });
 502                                 Task cont = t.ContinueWith(delegate { result = true; }, TaskContinuationOptions.OnlyOnRanToCompletion);
 503                                 Assert.IsTrue (t.Wait(1000), "#4");
 504                                 Assert.IsTrue (cont.Wait(1000), "#5");
 505
 506                                 Assert.IsNull(cont.Exception, "#1");
 507                                 Assert.IsNotNull(cont, "#2");
 508                                 Assert.IsTrue(result, "#3");
 509                         });
 510                 }
 511
 512                 [Test]
 513                 public void ContinueWithOnAbortedTestCase()
 514                 {
 515                         bool result = false;
 516                         bool taskResult = false;
 517
 518                         CancellationTokenSource src = new CancellationTokenSource ();
 519                         Task t = new Task (delegate { taskResult = true; }, src.Token);
 520
 521                         Task cont = t.ContinueWith (delegate { result = true; },
 522                                 TaskContinuationOptions.OnlyOnCanceled | TaskContinuationOptions.ExecuteSynchronously);
 523
 524                         src.Cancel ();
 525
 526                         Assert.AreEqual (TaskStatus.Canceled, t.Status, "#1a");
 527                         Assert.IsTrue (cont.IsCompleted, "#1b");
 528                         Assert.IsTrue (result, "#1c");
 529
 530                         try {
 531                                 t.Start ();
 532                                 Assert.Fail ("#2");
 533                         } catch (InvalidOperationException) {
 534                         }
 535
 536                         Assert.IsTrue (cont.Wait (1000), "#3");
 537
 538                         Assert.IsFalse (taskResult, "#4");
 539
 540                         Assert.IsNull (cont.Exception, "#5");
 541                         Assert.AreEqual (TaskStatus.RanToCompletion, cont.Status, "#6");
 542                 }
 543
 544                 [Test]
 545                 public void ContinueWithOnFailedTestCase()
 546                 {
 547                         ParallelTestHelper.Repeat (delegate {
 548                                 bool result = false;
 549
 550                                 Task t = Task.Factory.StartNew(delegate { throw new Exception("foo"); });
 551                                 Task cont = t.ContinueWith(delegate { result = true; }, TaskContinuationOptions.OnlyOnFaulted);
 552
 553                                 Assert.IsTrue (cont.Wait(1000), "#0");
 554                                 Assert.IsNotNull (t.Exception, "#1");
 555                                 Assert.IsNotNull (cont, "#2");
 556                                 Assert.IsTrue (result, "#3");
 557                         });
 558                 }
 559
 560                 [Test]
 561                 public void ContinueWithWithStart ()
 562                 {
 563                         Task t = new Task<int> (() => 1);
 564                         t = t.ContinueWith (l => { });
 565                         try {
 566                                 t.Start ();
 567                                 Assert.Fail ();
 568                         } catch (InvalidOperationException) {
 569                         }
 570                 }
 571
 572                 [Test]
 573                 public void ContinueWithChildren ()
 574                 {
 575                         ParallelTestHelper.Repeat (delegate {
 576                             bool result = false;
 577
 578                             var t = Task.Factory.StartNew (() => Task.Factory.StartNew (() => {}, TaskCreationOptions.AttachedToParent));
 579
 580                                 var mre = new ManualResetEvent (false);
 581                             t.ContinueWith (l => {
 582                                         result = true;
 583                                         mre.Set ();
 584                                 });
 585
 586                                 Assert.IsTrue (mre.WaitOne (1000), "#1");
 587                             Assert.IsTrue (result, "#2");
 588                         }, 2);
 589                 }
 590
 591                 [Test]
 592                 public void ContinueWithDifferentOptionsAreCanceledTest ()
 593                 {
 594                         var mre = new ManualResetEventSlim ();
 595                         var task = Task.Factory.StartNew (() => mre.Wait (200));
 596                         var contFailed = task.ContinueWith (t => {}, TaskContinuationOptions.OnlyOnFaulted);
 597                         var contCanceled = task.ContinueWith (t => {}, TaskContinuationOptions.OnlyOnCanceled);
 598                         var contSuccess = task.ContinueWith (t => {}, TaskContinuationOptions.OnlyOnRanToCompletion);
 599
 600                         mre.Set ();
 601                         contSuccess.Wait (100);
 602
 603                         Assert.IsTrue (contSuccess.IsCompleted);
 604                         Assert.IsTrue (contFailed.IsCompleted);
 605                         Assert.IsTrue (contCanceled.IsCompleted);
 606                         Assert.IsFalse (contSuccess.IsCanceled);
 607                         Assert.IsTrue (contFailed.IsCanceled);
 608                         Assert.IsTrue (contCanceled.IsCanceled);
 609                 }
 610
 611                 [Test]
 612                 public void MultipleTasks()
 613                 {
 614                         ParallelTestHelper.Repeat (delegate {
 615                                 bool r1 = false, r2 = false, r3 = false;
 616
 617                                 Task t1 = Task.Factory.StartNew(delegate {
 618                                         r1 = true;
 619                                 });
 620                                 Task t2 = Task.Factory.StartNew(delegate {
 621                                         r2 = true;
 622                                 });
 623                                 Task t3 = Task.Factory.StartNew(delegate {
 624                                         r3 = true;
 625                                 });
 626
 627                                 t1.Wait(2000);
 628                                 t2.Wait(2000);
 629                                 t3.Wait(2000);
 630
 631                                 Assert.IsTrue(r1, "#1");
 632                                 Assert.IsTrue(r2, "#2");
 633                                 Assert.IsTrue(r3, "#3");
 634                         }, 100);
 635                 }
 636
 637                 [Test]
 638                 public void WaitChildTestCase()
 639                 {
 640                         ParallelTestHelper.Repeat (delegate {
 641                                 bool r1 = false, r2 = false, r3 = false;
 642                                 var mre = new ManualResetEventSlim (false);
 643                                 var mreStart = new ManualResetEventSlim (false);
 644
 645                                 Task t = Task.Factory.StartNew(delegate {
 646                                         Task.Factory.StartNew(delegate {
 647                                                 mre.Wait (300);
 648                                                 r1 = true;
 649                                         }, TaskCreationOptions.AttachedToParent);
 650                                         Task.Factory.StartNew(delegate {
 651                                                 r2 = true;
 652                                         }, TaskCreationOptions.AttachedToParent);
 653                                         Task.Factory.StartNew(delegate {
 654                                                 r3 = true;
 655                                         }, TaskCreationOptions.AttachedToParent);
 656                                         mreStart.Set ();
 657                                 });
 658
 659                                 mreStart.Wait (300);
 660                                 Assert.IsFalse (t.Wait (10), "#0a");
 661                                 mre.Set ();
 662                                 Assert.IsTrue (t.Wait (500), "#0b");
 663                                 Assert.IsTrue(r2, "#1");
 664                                 Assert.IsTrue(r3, "#2");
 665                                 Assert.IsTrue(r1, "#3");
 666                                 Assert.AreEqual (TaskStatus.RanToCompletion, t.Status, "#4");
 667                         }, 10);
 668                 }
 669
 670                 [Test]
 671                 public void WaitChildWithContinuationAttachedTest ()
 672                 {
 673                         bool result = false;
 674                         var task = new Task(() =>
 675                         {
 676                                 Task.Factory.StartNew(() =>     {
 677                                         Thread.Sleep (200);
 678                                 }, TaskCreationOptions.AttachedToParent).ContinueWith(t => {
 679                                         Thread.Sleep (200);
 680                                         result = true;
 681                                 }, TaskContinuationOptions.AttachedToParent);
 682                         });
 683                         task.Start();
 684                         task.Wait();
 685                         Assert.IsTrue (result);
 686                 }
 687
 688                 [Test]
 689                 public void WaitChildWithContinuationNotAttachedTest ()
 690                 {
 691                         var task = new Task(() =>
 692                         {
 693                                 Task.Factory.StartNew(() =>     {
 694                                         Thread.Sleep (200);
 695                                 }, TaskCreationOptions.AttachedToParent).ContinueWith(t => {
 696                                         Thread.Sleep (3000);
 697                                 });
 698                         });
 699                         task.Start();
 700                         Assert.IsTrue (task.Wait(400));
 701                 }
 702
 703                 [Test]
 704                 public void WaitChildWithNesting ()
 705                 {
 706                         var result = false;
 707                         var t = Task.Factory.StartNew (() => {
 708                                 Task.Factory.StartNew (() => {
 709                                         Task.Factory.StartNew (() => {
 710                                                 Thread.Sleep (500);
 711                                                 result = true;
 712                                         }, TaskCreationOptions.AttachedToParent);
 713                                 }, TaskCreationOptions.AttachedToParent);
 714                         });
 715                         t.Wait ();
 716                         Assert.IsTrue (result);
 717                 }
 718
 719                 [Test]
 720                 public void DoubleWaitTest ()
 721                 {
 722                         ParallelTestHelper.Repeat (delegate {
 723                                 Console.WriteLine ("run");
 724                                 var evt = new ManualResetEventSlim ();
 725                                 var t = Task.Factory.StartNew (() => evt.Wait (2000));
 726                                 var cntd = new CountdownEvent (2);
 727
 728                                 bool r1 = false, r2 = false;
 729                                 ThreadPool.QueueUserWorkItem (delegate { cntd.Signal (); r1 = t.Wait (1000); Console.WriteLine ("out 1 {0}", r1); cntd.Signal (); });
 730                                 ThreadPool.QueueUserWorkItem (delegate { cntd.Signal (); r2 = t.Wait (1000); Console.WriteLine ("out 2 {0}", r2); cntd.Signal (); });
 731
 732                                 cntd.Wait (2000);
 733                                 cntd.Reset ();
 734                                 evt.Set ();
 735                                 cntd.Wait (2000);
 736                                 Assert.IsTrue (r1);
 737                                 Assert.IsTrue (r2);
 738                         }, 5);
 739                 }
 740
 741                 [Test]
 742                 public void DoubleTimeoutedWaitTest ()
 743                 {
 744                         var evt = new ManualResetEventSlim ();
 745                         var t = new Task (delegate { });
 746                         var cntd = new CountdownEvent (2);
 747
 748                         bool r1 = false, r2 = false;
 749                         ThreadPool.QueueUserWorkItem (delegate { r1 = !t.Wait (100); cntd.Signal (); });
 750                         ThreadPool.QueueUserWorkItem (delegate { r2 = !t.Wait (100); cntd.Signal (); });
 751
 752                         cntd.Wait (2000);
 753                         Assert.IsTrue (r1);
 754                         Assert.IsTrue (r2);
 755                 }
 756
 757                 [Test]
 758                 public void RunSynchronously ()
 759                 {
 760                         var val = 0;
 761                         Task t = new Task (() => { Thread.Sleep (100); val = 1; });
 762                         t.RunSynchronously ();
 763
 764                         Assert.AreEqual (1, val, "#1");
 765
 766                         t = new Task (() => { Thread.Sleep (0); val = 2; });
 767
 768                         bool? previouslyQueued = null;
 769
 770                         var scheduler = new MockScheduler ();
 771                         scheduler.TryExecuteTaskInlineHandler += (task, b) => {
 772                                 previouslyQueued = b;
 773                         };
 774
 775                         t.RunSynchronously (scheduler);
 776
 777                         Assert.AreEqual (2, val, "#2");
 778                         Assert.AreEqual (false, previouslyQueued, "#2a");
 779                 }
 780
 781                 [Test]
 782                 public void RunSynchronouslyArgumentChecks ()
 783                 {
 784                         Task t = new Task (() => { });
 785                         try {
 786                                 t.RunSynchronously (null);
 787                                 Assert.Fail ("#1");
 788                         } catch (ArgumentNullException) {
 789                         }
 790                 }
 791
 792                 [Test]
 793                 public void RunSynchronouslyWithAttachedChildren ()
 794                 {
 795                         var result = false;
 796                         var t = new Task (() => {
 797                                 Task.Factory.StartNew (() => { Thread.Sleep (500); result = true; }, TaskCreationOptions.AttachedToParent);
 798                         });
 799                         t.RunSynchronously ();
 800                         Assert.IsTrue (result);
 801                 }
 802
 803                 [Test]
 804                 public void UnobservedExceptionOnFinalizerThreadTest ()
 805                 {
 806                         bool wasCalled = false;
 807                         TaskScheduler.UnobservedTaskException += (o, args) => {
 808                                 wasCalled = true;
 809                                 args.SetObserved ();
 810                         };
 811                         var inner = new ApplicationException ();
 812                         Task.Factory.StartNew (() => { throw inner; });
 813                         Thread.Sleep (1000);
 814                         GC.Collect ();
 815                         Thread.Sleep (1000);
 816                         GC.WaitForPendingFinalizers ();
 817
 818                         Assert.IsTrue (wasCalled);
 819                 }
 820
 821                 [Test, ExpectedException (typeof (InvalidOperationException))]
 822                 public void StartFinishedTaskTest ()
 823                 {
 824                         var t = Task.Factory.StartNew (delegate () { });
 825                         t.Wait ();
 826
 827                         t.Start ();
 828                 }
 829
 830                 [Test]
 831                 public void Start_NullArgument ()
 832                 {
 833                         var t = Task.Factory.StartNew (delegate () { });
 834                         try {
 835                                 t.Start (null);
 836                                 Assert.Fail ();
 837                         } catch (ArgumentNullException) {
 838                         }
 839                 }
 840
 841                 [Test, ExpectedException (typeof (InvalidOperationException))]
 842                 public void DisposeUnstartedTest ()
 843                 {
 844                         var t = new Task (() => { });
 845                         t.Dispose ();
 846                 }
 847
 848                 [Test]
 849                 public void ThrowingUnrelatedCanceledExceptionTest ()
 850                 {
 851                         Task t = new Task (() => {
 852                                 throw new TaskCanceledException ();
 853                         });
 854
 855                         t.RunSynchronously ();
 856                         Assert.IsTrue (t.IsFaulted);
 857                         Assert.IsFalse (t.IsCanceled);
 858                 }
 859
 860                 [Test]
 861                 public void CanceledContinuationExecuteSynchronouslyTest ()
 862                 {
 863                         var source = new CancellationTokenSource();
 864                         var token = source.Token;
 865                         var evt = new ManualResetEventSlim ();
 866                         bool result = false;
 867                         bool thrown = false;
 868
 869                         var task = Task.Factory.StartNew (() => evt.Wait (100));
 870                         var cont = task.ContinueWith (t => result = true, token, TaskContinuationOptions.ExecuteSynchronously, TaskScheduler.Default);
 871
 872                         source.Cancel();
 873                         evt.Set ();
 874                         task.Wait (100);
 875                         try {
 876                                 cont.Wait (100);
 877                         } catch (Exception ex) {
 878                                 thrown = true;
 879                         }
 880
 881                         Assert.IsTrue (task.IsCompleted);
 882                         Assert.IsTrue (cont.IsCanceled);
 883                         Assert.IsFalse (result);
 884                         Assert.IsTrue (thrown);
 885                 }
 886
 887                 [Test]
 888                 public void WhenChildTaskErrorIsThrownParentTaskShouldBeFaulted ()
 889                 {
 890                         Task innerTask = null;
 891                         var testTask = new Task (() =>
 892                         {
 893                                 innerTask = new Task (() =>
 894                                 {
 895                                         throw new InvalidOperationException ();
 896                                 }, TaskCreationOptions.AttachedToParent);
 897                                 innerTask.RunSynchronously ();
 898                         });
 899                         testTask.RunSynchronously ();
 900
 901                         Assert.AreNotEqual (TaskStatus.Running, testTask.Status);
 902                         Assert.IsNotNull (innerTask);
 903                         Assert.IsTrue (innerTask.IsFaulted);
 904                         Assert.IsNotNull (testTask.Exception);
 905                         Assert.IsTrue (testTask.IsFaulted);
 906                         Assert.IsNotNull (innerTask.Exception);
 907                 }
 908
 909                 [Test]
 910                 public void WhenChildTaskErrorIsThrownOnlyOnFaultedContinuationShouldExecute ()
 911                 {
 912                         var continuationRan = false;
 913                         var testTask = new Task (() =>
 914                         {
 915                                 var task = new Task (() =>
 916                                 {
 917                                         throw new InvalidOperationException();
 918                                 }, TaskCreationOptions.AttachedToParent);
 919                                 task.RunSynchronously ();
 920                         });
 921                         var onErrorTask = testTask.ContinueWith (x => continuationRan = true, TaskContinuationOptions.OnlyOnFaulted);
 922                         testTask.RunSynchronously ();
 923                         onErrorTask.Wait (100);
 924                         Assert.IsTrue (continuationRan);
 925                 }
 926
 927                 [Test]
 928                 public void WhenChildTaskErrorIsThrownNotOnFaultedContinuationShouldNotBeExecuted ()
 929                 {
 930                         var continuationRan = false;
 931                         var testTask = new Task (() =>
 932                         {
 933                                 var task = new Task (() =>
 934                                 {
 935                                         throw new InvalidOperationException();
 936                                 }, TaskCreationOptions.AttachedToParent);
 937                                 task.RunSynchronously();
 938                         });
 939                         var onErrorTask = testTask.ContinueWith (x => continuationRan = true, TaskContinuationOptions.NotOnFaulted);
 940                         testTask.RunSynchronously ();
 941                         Assert.IsTrue (onErrorTask.IsCompleted);
 942                         Assert.IsFalse (onErrorTask.IsFaulted);
 943                         Assert.IsFalse (continuationRan);
 944                 }
 945
 946                 [Test]
 947                 public void WhenChildTaskSeveralLevelsDeepHandlesAggregateExceptionErrorStillBubblesToParent ()
 948                 {
 949                         var continuationRan = false;
 950                         AggregateException e = null;
 951                         var testTask = new Task (() =>
 952                         {
 953                                 var child1 = new Task (() =>
 954                                 {
 955                                         var child2 = new Task (() =>
 956                                         {
 957                                                 throw new InvalidOperationException();
 958                                         }, TaskCreationOptions.AttachedToParent);
 959                                         child2.RunSynchronously ();
 960                                 }, TaskCreationOptions.AttachedToParent);
 961
 962                                 child1.RunSynchronously();
 963                                 e = child1.Exception;
 964                                 child1.Exception.Handle (ex => true);
 965                         });
 966                         var onErrorTask = testTask.ContinueWith (x => continuationRan = true, TaskContinuationOptions.OnlyOnFaulted);
 967                         testTask.RunSynchronously ();
 968                         onErrorTask.Wait (100);
 969                         Assert.IsNotNull (e);
 970                         Assert.IsTrue (continuationRan);
 971                 }
 972
 973                 [Test]
 974                 public void AlreadyCompletedChildTaskShouldRunContinuationImmediately ()
 975                 {
 976                         string result = "Failed";
 977                         var testTask = new Task (() =>
 978                         {
 979                                 var child = new Task<string> (() =>
 980                                 {
 981                                         return "Success";
 982                                 }, TaskCreationOptions.AttachedToParent);
 983                                 child.RunSynchronously ();
 984                                 child.ContinueWith (x => { Thread.Sleep (50); result = x.Result; }, TaskContinuationOptions.AttachedToParent | TaskContinuationOptions.NotOnFaulted);
 985                         });
 986                         testTask.RunSynchronously ();
 987
 988                         Assert.AreEqual ("Success", result);
 989                 }
 990
 991                 [Test]
 992                 public void InlineNotTrashingParentRelationship ()
 993                 {
 994                         bool r1 = false, r2 = false;
 995                         var t = new Task (() => {
 996                                 new Task (() => { r1 = true; }, TaskCreationOptions.AttachedToParent).RunSynchronously ();
 997                                 Task.Factory.StartNew (() => { Thread.Sleep (100); r2 = true; }, TaskCreationOptions.AttachedToParent);
 998                     });
 999                         t.RunSynchronously ();
1000
1001                         Assert.IsTrue (r1);
1002                         Assert.IsTrue (r2);
1003                 }
1004
1005 #if NET_4_5
1006                 [Test]
1007                 public void Delay_Invalid ()
1008                 {
1009                         try {
1010                                 Task.Delay (-100);
1011                         } catch (ArgumentOutOfRangeException) {
1012                         }
1013                 }
1014
1015                 [Test]
1016                 public void Delay_Start ()
1017                 {
1018                         var t = Task.Delay (5000);
1019                         try {
1020                                 t.Start ();
1021                         } catch (InvalidOperationException) {
1022                         }
1023                 }
1024
1025                 [Test]
1026                 public void Delay_Simple ()
1027                 {
1028                         var t = Task.Delay (300);
1029                         Assert.IsTrue (TaskStatus.WaitingForActivation == t.Status || TaskStatus.Running == t.Status, "#1");
1030                         Assert.IsTrue (t.Wait (400), "#2");
1031                 }
1032
1033                 [Test]
1034                 public void Delay_Cancelled ()
1035                 {
1036                         var cancelation = new CancellationTokenSource ();
1037
1038                         var t = Task.Delay (5000, cancelation.Token);
1039                         Assert.IsTrue (TaskStatus.WaitingForActivation == t.Status || TaskStatus.Running == t.Status, "#1");
1040                         cancelation.Cancel ();
1041                         try {
1042                                 t.Wait (1000);
1043                                 Assert.Fail ("#2");
1044                         } catch (AggregateException) {
1045                                 Assert.AreEqual (TaskStatus.Canceled, t.Status, "#3");
1046                         }
1047
1048                         cancelation = new CancellationTokenSource ();
1049                         t = Task.Delay (Timeout.Infinite, cancelation.Token);
1050                         Assert.AreEqual (TaskStatus.WaitingForActivation, t.Status, "#11");
1051                         cancelation.Cancel ();
1052                         try {
1053                                 t.Wait (1000);
1054                                 Assert.Fail ("#12");
1055                         } catch (AggregateException) {
1056                                 Assert.AreEqual (TaskStatus.Canceled, t.Status, "#13");
1057                         }
1058                 }
1059
1060                 [Test]
1061                 public void WaitAny_WithNull ()
1062                 {
1063                         var tasks = new [] {
1064                                 Task.FromResult (2),
1065                                 null
1066                         };
1067
1068                         try {
1069                                 Task.WaitAny (tasks);
1070                                 Assert.Fail ();
1071                         } catch (ArgumentException) {
1072                         }
1073                 }
1074
1075                 [Test]
1076                 public void WhenAll_WithNull ()
1077                 {
1078                         var tasks = new[] {
1079                                 Task.FromResult (2),
1080                                 null
1081                         };
1082
1083                         try {
1084                                 Task.WhenAll (tasks);
1085                                 Assert.Fail ("#1");
1086                         } catch (ArgumentException) {
1087                         }
1088
1089                         tasks = null;
1090                         try {
1091                                 Task.WhenAll (tasks);
1092                                 Assert.Fail ("#2");
1093                         } catch (ArgumentException) {
1094                         }
1095                 }
1096
1097                 [Test]
1098                 public void WhenAll_Start ()
1099                 {
1100                         Task[] tasks = new[] {
1101                                 Task.FromResult (2),
1102                         };
1103
1104                         var t = Task.WhenAll (tasks);
1105                         Assert.AreEqual (TaskStatus.RanToCompletion, t.Status, "#1");
1106
1107                         try {
1108                                 t.Start ();
1109                                 Assert.Fail ("#2");
1110                         } catch (InvalidOperationException) {
1111                         }
1112
1113                         tasks = new [] {
1114                                 new Task (delegate { }),
1115                         };
1116
1117                         t = Task.WhenAll (tasks);
1118                         Assert.AreEqual (TaskStatus.WaitingForActivation, t.Status, "#11");
1119
1120                         try {
1121                                 t.Start ();
1122                                 Assert.Fail ("#12");
1123                         } catch (InvalidOperationException) {
1124                         }
1125                 }
1126
1127                 [Test]
1128                 public void WhenAll_Cancelled ()
1129                 {
1130                         var cancelation = new CancellationTokenSource ();
1131                         var tasks = new Task[] {
1132                                 new Task (delegate { }),
1133                                 new Task (delegate { }, cancelation.Token)
1134                         };
1135
1136                         cancelation.Cancel ();
1137
1138                         var t = Task.WhenAll (tasks);
1139                         Assert.AreEqual (TaskStatus.WaitingForActivation, t.Status, "#1");
1140                         tasks[0].Start ();
1141
1142                         try {
1143                                 Assert.IsTrue (t.Wait (1000), "#2");
1144                                 Assert.Fail ("#2a");
1145                         } catch (AggregateException e) {
1146                                 Assert.IsInstanceOfType (typeof (TaskCanceledException), e.InnerException, "#3");
1147                         }
1148                 }
1149
1150                 [Test]
1151                 public void WhenAll_Faulted ()
1152                 {
1153                         var tcs = new TaskCompletionSource<object> ();
1154                         tcs.SetException (new ApplicationException ());
1155
1156                         var tcs2 = new TaskCompletionSource<object> ();
1157                         tcs2.SetException (new InvalidTimeZoneException ());
1158
1159                         var cancelation = new CancellationTokenSource ();
1160                         var tasks = new Task[] {
1161                                 new Task (delegate { }),
1162                                 new Task (delegate { }, cancelation.Token),
1163                                 tcs.Task,
1164                                 tcs2.Task
1165                         };
1166
1167                         cancelation.Cancel ();
1168
1169                         var t = Task.WhenAll (tasks);
1170                         Assert.AreEqual (TaskStatus.WaitingForActivation, t.Status, "#1");
1171                         tasks[0].Start ();
1172
1173                         try {
1174                                 Assert.IsTrue (t.Wait (1000), "#2");
1175                                 Assert.Fail ("#2a");
1176                         } catch (AggregateException e) {
1177                                 Assert.IsInstanceOfType (typeof (ApplicationException), e.InnerException, "#3");
1178                                 Assert.IsInstanceOfType (typeof (InvalidTimeZoneException), e.InnerExceptions[1], "#4");
1179                         }
1180                 }
1181
1182                 [Test]
1183                 public void WhenAll ()
1184                 {
1185                         var t1 = new Task (delegate { });
1186                         var t2 = new Task (delegate { t1.Start (); });
1187
1188                         var tasks = new Task[] {
1189                                 t1,
1190                                 t2,
1191                         };
1192
1193                         var t = Task.WhenAll (tasks);
1194                         Assert.AreEqual (TaskStatus.WaitingForActivation, t.Status, "#1");
1195                         t2.Start ();
1196
1197                         Assert.IsTrue (t.Wait (1000), "#2");
1198                 }
1199
1200                 [Test]
1201                 public void WhenAllResult_WithNull ()
1202                 {
1203                         var tasks = new[] {
1204                                 Task.FromResult (2),
1205                                 null
1206                         };
1207
1208                         try {
1209                                 Task.WhenAll<int> (tasks);
1210                                 Assert.Fail ("#1");
1211                         } catch (ArgumentException) {
1212                         }
1213
1214                         tasks = null;
1215                         try {
1216                                 Task.WhenAll<int> (tasks);
1217                                 Assert.Fail ("#2");
1218                         } catch (ArgumentException) {
1219                         }
1220                 }
1221
1222                 [Test]
1223                 public void WhenAllResult_Cancelled ()
1224                 {
1225                         var cancelation = new CancellationTokenSource ();
1226                         var tasks = new [] {
1227                                 new Task<int> (delegate { return 9; }),
1228                                 new Task<int> (delegate { return 1; }, cancelation.Token)
1229                         };
1230
1231                         cancelation.Cancel ();
1232
1233                         var t = Task.WhenAll (tasks);
1234                         Assert.AreEqual (TaskStatus.WaitingForActivation, t.Status, "#1");
1235                         tasks[0].Start ();
1236
1237                         try {
1238                                 Assert.IsTrue (t.Wait (1000), "#2");
1239                                 Assert.Fail ("#2a");
1240                         } catch (AggregateException e) {
1241                                 Assert.IsInstanceOfType (typeof (TaskCanceledException), e.InnerException, "#3");
1242                         }
1243
1244                         try {
1245                                 var r = t.Result;
1246                                 Assert.Fail ("#4");
1247                         } catch (AggregateException) {
1248                         }
1249                 }
1250
1251                 [Test]
1252                 public void WhenAllResult ()
1253                 {
1254                         var t1 = new Task<string> (delegate { return "a"; });
1255                         var t2 = new Task<string> (delegate { t1.Start (); return "b"; });
1256
1257                         var tasks = new [] {
1258                                 t1,
1259                                 t2,
1260                         };
1261
1262                         var t = Task.WhenAll<string> (tasks);
1263                         Assert.AreEqual (TaskStatus.WaitingForActivation, t.Status, "#1");
1264                         t2.Start ();
1265
1266                         Assert.IsTrue (t.Wait (1000), "#2");
1267                         Assert.AreEqual (2, t.Result.Length, "#3");
1268                         Assert.AreEqual ("a", t.Result[0], "#3a");
1269                         Assert.AreEqual ("b", t.Result[1], "#3b");
1270                 }
1271
1272                 [Test]
1273                 public void WhenAllResult_Completed ()
1274                 {
1275                         var tasks = new[] {
1276                                 Task.FromResult (1),
1277                                 Task.FromResult (2)
1278                         };
1279
1280                         var t = Task.WhenAll<int> (tasks);
1281                         Assert.AreEqual (TaskStatus.RanToCompletion, t.Status, "#1");
1282                         Assert.AreEqual (2, t.Result.Length, "#2");
1283                         Assert.AreEqual (1, t.Result[0], "#2a");
1284                         Assert.AreEqual (2, t.Result[1], "#2b");
1285                 }
1286
1287                 [Test]
1288                 public void WhenAny_WithNull ()
1289                 {
1290                         var tasks = new Task[] {
1291                                 Task.FromResult (2),
1292                                 null
1293                         };
1294
1295                         try {
1296                                 Task.WhenAny (tasks);
1297                                 Assert.Fail ("#1");
1298                         } catch (ArgumentException) {
1299                         }
1300
1301                         tasks = null;
1302                         try {
1303                                 Task.WhenAny (tasks);
1304                                 Assert.Fail ("#2");
1305                         } catch (ArgumentException) {
1306                         }
1307
1308                         try {
1309                                 Task.WhenAny (new Task[0]);
1310                                 Assert.Fail ("#3");
1311                         } catch (ArgumentException) {
1312                         }
1313                 }
1314
1315                 [Test]
1316                 public void WhenAny_Start ()
1317                 {
1318                         Task[] tasks = new[] {
1319                                 Task.FromResult (2),
1320                         };
1321
1322                         var t = Task.WhenAny (tasks);
1323                         Assert.AreEqual (TaskStatus.RanToCompletion, t.Status, "#1");
1324
1325                         try {
1326                                 t.Start ();
1327                                 Assert.Fail ("#2");
1328                         } catch (InvalidOperationException) {
1329                         }
1330
1331                         tasks = new[] {
1332                                 new Task (delegate { }),
1333                         };
1334
1335                         t = Task.WhenAny (tasks);
1336                         Assert.AreEqual (TaskStatus.WaitingForActivation, t.Status, "#11");
1337
1338                         try {
1339                                 t.Start ();
1340                                 Assert.Fail ("#12");
1341                         } catch (InvalidOperationException) {
1342                         }
1343                 }
1344
1345                 [Test]
1346                 public void WhenAny_Cancelled ()
1347                 {
1348                         var cancelation = new CancellationTokenSource ();
1349                         var tasks = new Task[] {
1350                                 new Task (delegate { }),
1351                                 new Task (delegate { }, cancelation.Token)
1352                         };
1353
1354                         cancelation.Cancel ();
1355
1356                         var t = Task.WhenAny (tasks);
1357                         Assert.AreEqual (TaskStatus.RanToCompletion, t.Status, "#1");
1358                         tasks[0].Start ();
1359
1360                         Assert.IsTrue (t.Wait (1000), "#2");
1361                         Assert.AreEqual (TaskStatus.Canceled, t.Result.Status, "#3");
1362                 }
1363
1364                 [Test]
1365                 public void WhenAny_Faulted ()
1366                 {
1367                         var tcs = new TaskCompletionSource<object> ();
1368                         tcs.SetException (new ApplicationException ());
1369
1370                         var tcs2 = new TaskCompletionSource<object> ();
1371                         tcs2.SetException (new InvalidTimeZoneException ());
1372
1373                         var cancelation = new CancellationTokenSource ();
1374                         var tasks = new Task[] {
1375                                 new Task (delegate { }),
1376                                 tcs.Task,
1377                                 new Task (delegate { }, cancelation.Token),
1378                                 tcs2.Task
1379                         };
1380
1381                         cancelation.Cancel ();
1382
1383                         var t = Task.WhenAny (tasks);
1384                         Assert.AreEqual (TaskStatus.RanToCompletion, t.Status, "#1");
1385                         tasks[0].Start ();
1386
1387                         Assert.IsTrue (t.Wait (1000), "#2");
1388                         Assert.IsNull (t.Exception, "#3");
1389
1390                         Assert.IsInstanceOfType (typeof (ApplicationException), t.Result.Exception.InnerException, "#4");
1391                 }
1392
1393                 [Test]
1394                 public void WhenAny ()
1395                 {
1396                         var t1 = new Task (delegate { });
1397                         var t2 = new Task (delegate { t1.Start (); });
1398
1399                         var tasks = new Task[] {
1400                                 t1,
1401                                 t2,
1402                         };
1403
1404                         var t = Task.WhenAny (tasks);
1405                         Assert.AreEqual (TaskStatus.WaitingForActivation, t.Status, "#1");
1406                         t2.Start ();
1407
1408                         Assert.IsTrue (t.Wait (1000), "#2");
1409                         Assert.IsNotNull (t.Result, "#3");
1410                 }
1411
1412                 [Test]
1413                 public void WhenAnyResult_WithNull ()
1414                 {
1415                         var tasks = new [] {
1416                                 Task.FromResult (2),
1417                                 null
1418                         };
1419
1420                         try {
1421                                 Task.WhenAny<int> (tasks);
1422                                 Assert.Fail ("#1");
1423                         } catch (ArgumentException) {
1424                         }
1425
1426                         tasks = null;
1427                         try {
1428                                 Task.WhenAny<int> (tasks);
1429                                 Assert.Fail ("#2");
1430                         } catch (ArgumentException) {
1431                         }
1432
1433                         try {
1434                                 Task.WhenAny<short> (new Task<short>[0]);
1435                                 Assert.Fail ("#3");
1436                         } catch (ArgumentException) {
1437                         }
1438                 }
1439
1440                 [Test]
1441                 public void WhenAnyResult_Start ()
1442                 {
1443                         var tasks = new[] {
1444                                 Task.FromResult (2),
1445                         };
1446
1447                         var t = Task.WhenAny<int> (tasks);
1448                         Assert.AreEqual (TaskStatus.RanToCompletion, t.Status, "#1");
1449
1450                         try {
1451                                 t.Start ();
1452                                 Assert.Fail ("#2");
1453                         } catch (InvalidOperationException) {
1454                         }
1455
1456                         tasks = new[] {
1457                                 new Task<int> (delegate { return 55; }),
1458                         };
1459
1460                         t = Task.WhenAny<int> (tasks);
1461                         Assert.AreEqual (TaskStatus.WaitingForActivation, t.Status, "#11");
1462
1463                         try {
1464                                 t.Start ();
1465                                 Assert.Fail ("#12");
1466                         } catch (InvalidOperationException) {
1467                         }
1468                 }
1469
1470                 [Test]
1471                 public void WhenAnyResult_Cancelled ()
1472                 {
1473                         var cancelation = new CancellationTokenSource ();
1474                         var tasks = new [] {
1475                                 new Task<double> (delegate { return 1.1; }),
1476                                 new Task<double> (delegate { return -4.4; }, cancelation.Token)
1477                         };
1478
1479                         cancelation.Cancel ();
1480
1481                         var t = Task.WhenAny<double> (tasks);
1482                         Assert.AreEqual (TaskStatus.RanToCompletion, t.Status, "#1");
1483                         tasks[0].Start ();
1484
1485                         Assert.IsTrue (t.Wait (1000), "#2");
1486                         Assert.AreEqual (TaskStatus.Canceled, t.Result.Status, "#3");
1487                 }
1488
1489                 [Test]
1490                 public void WhenAnyResult_Faulted ()
1491                 {
1492                         var tcs = new TaskCompletionSource<object> ();
1493                         tcs.SetException (new ApplicationException ());
1494
1495                         var tcs2 = new TaskCompletionSource<object> ();
1496                         tcs2.SetException (new InvalidTimeZoneException ());
1497
1498                         var cancelation = new CancellationTokenSource ();
1499                         var tasks = new Task<object>[] {
1500                                 new Task<object> (delegate { return null; }),
1501                                 tcs.Task,
1502                                 new Task<object> (delegate { return ""; }, cancelation.Token),
1503                                 tcs2.Task
1504                         };
1505
1506                         cancelation.Cancel ();
1507
1508                         var t = Task.WhenAny<object> (tasks);
1509                         Assert.AreEqual (TaskStatus.RanToCompletion, t.Status, "#1");
1510                         tasks[0].Start ();
1511
1512                         Assert.IsTrue (t.Wait (1000), "#2");
1513                         Assert.IsNull (t.Exception, "#3");
1514
1515                         Assert.IsInstanceOfType (typeof (ApplicationException), t.Result.Exception.InnerException, "#4");
1516                 }
1517
1518                 [Test]
1519                 public void WhenAnyResult ()
1520                 {
1521                         var t1 = new Task<byte> (delegate { return 3; });
1522                         var t2 = new Task<byte> (delegate { t1.Start (); return 2; });
1523
1524                         var tasks = new [] {
1525                                 t1,
1526                                 t2,
1527                         };
1528
1529                         var t = Task.WhenAny<byte> (tasks);
1530                         Assert.AreEqual (TaskStatus.WaitingForActivation, t.Status, "#1");
1531                         t2.Start ();
1532
1533                         Assert.IsTrue (t.Wait (1000), "#2");
1534                         Assert.IsTrue (t.Result.Result > 1, "#3");
1535                 }
1536
1537                 [Test]
1538                 public void ContinueWith_StateValue ()
1539                 {
1540                         var t = Task.Factory.StartNew (l => {
1541                                 Assert.AreEqual (1, l, "a-1");
1542                         }, 1);
1543
1544                         var c = t.ContinueWith ((a, b) => {
1545                                 Assert.AreEqual (t, a, "c-1");
1546                                 Assert.AreEqual (2, b, "c-2");
1547                         }, 2);
1548
1549                         var d = t.ContinueWith ((a, b) => {
1550                                 Assert.AreEqual (t, a, "d-1");
1551                                 Assert.AreEqual (3, b, "d-2");
1552                                 return 77;
1553                         }, 3);
1554
1555                         Assert.IsTrue (d.Wait (1000), "#1");
1556
1557                         Assert.AreEqual (1, t.AsyncState, "#2");
1558                         Assert.AreEqual (2, c.AsyncState, "#3");
1559                         Assert.AreEqual (3, d.AsyncState, "#4");
1560                 }
1561
1562                 [Test]
1563                 public void ContinueWith_StateValueGeneric ()
1564                 {
1565                         var t = Task<int>.Factory.StartNew (l => {
1566                                 Assert.AreEqual (1, l, "a-1");
1567                                 return 80;
1568                         }, 1);
1569
1570                         var c = t.ContinueWith ((a, b) => {
1571                                 Assert.AreEqual (t, a, "c-1");
1572                                 Assert.AreEqual (2, b, "c-2");
1573                                 return "c";
1574                         }, 2);
1575
1576                         var d = t.ContinueWith ((a, b) => {
1577                                 Assert.AreEqual (t, a, "d-1");
1578                                 Assert.AreEqual (3, b, "d-2");
1579                                 return 'd';
1580                         }, 3);
1581
1582                         Assert.IsTrue (d.Wait (1000), "#1");
1583
1584                         Assert.AreEqual (1, t.AsyncState, "#2");
1585                         Assert.AreEqual (80, t.Result, "#2r");
1586                         Assert.AreEqual (2, c.AsyncState, "#3");
1587                         Assert.AreEqual ("c", c.Result, "#3r");
1588                         Assert.AreEqual (3, d.AsyncState, "#4");
1589                         Assert.AreEqual ('d', d.Result, "#3r");
1590                 }
1591
1592                 [Test]
1593                 public void FromResult ()
1594                 {
1595                         var t = Task.FromResult<object> (null);
1596                         Assert.IsTrue (t.IsCompleted, "#1");
1597                         Assert.AreEqual (null, t.Result, "#2");
1598                         t.Dispose ();
1599                         t.Dispose ();
1600                 }
1601
1602                 [Test]
1603                 public void LongRunning ()
1604                 {
1605                         bool? is_tp = null;
1606                         bool? is_bg = null;
1607                         var t = new Task (() => { is_tp = Thread.CurrentThread.IsThreadPoolThread; is_bg = Thread.CurrentThread.IsBackground; });
1608                         t.Start ();
1609                         Assert.IsTrue (t.Wait (100));
1610                         Assert.IsTrue ((bool)is_tp, "#1");
1611                         Assert.IsTrue ((bool)is_bg, "#2");
1612
1613                         is_tp = null;
1614                         is_bg = null;
1615                         t = new Task (() => { is_tp = Thread.CurrentThread.IsThreadPoolThread; is_bg = Thread.CurrentThread.IsBackground; }, TaskCreationOptions.LongRunning);
1616                         t.Start ();
1617
1618                         Assert.IsTrue (t.Wait (100));
1619                         Assert.IsFalse ((bool) is_tp, "#11");
1620                         Assert.IsTrue ((bool) is_bg, "#12");
1621                 }
1622
1623                 [Test]
1624                 public void Run_ArgumentCheck ()
1625                 {
1626                         try {
1627                                 Task.Run (null as Action);
1628                                 Assert.Fail ("#1");
1629                         } catch (ArgumentNullException) {
1630                         }
1631                 }
1632
1633                 [Test]
1634                 public void Run ()
1635                 {
1636                         var t = Task.Run (delegate { });
1637                         Assert.AreEqual (TaskCreationOptions.DenyChildAttach, t.CreationOptions, "#1");
1638                         t.Wait ();
1639                 }
1640
1641                 [Test]
1642                 public void Run_Cancel ()
1643                 {
1644                         var t = Task.Run (() => 1, new CancellationToken (true));
1645                         try {
1646                                 var r = t.Result;
1647                                 Assert.Fail ("#1");
1648                         } catch (AggregateException) {
1649                         }
1650
1651                         Assert.IsTrue (t.IsCanceled, "#2");
1652                 }
1653
1654                 [Test]
1655                 public void Run_ExistingTask ()
1656                 {
1657                         var t = new Task<int> (() => 5);
1658                         var t2 = Task.Run (() => { t.Start (); return t; });
1659
1660                         Assert.IsTrue (t2.Wait (1000), "#1");
1661                         Assert.AreEqual (5, t2.Result, "#2");
1662                 }
1663 #endif
1664         }
1665 }
1666 #endif