5 // Jérémie "Garuma" Laval <jeremie.laval@gmail.com>
6 // Marek Safar <marek.safar@gmail.com>
8 // Copyright (c) 2010 Jérémie "Garuma" Laval
9 // Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
11 // Permission is hereby granted, free of charge, to any person obtaining a copy
12 // of this software and associated documentation files (the "Software"), to deal
13 // in the Software without restriction, including without limitation the rights
14 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
15 // copies of the Software, and to permit persons to whom the Software is
16 // furnished to do so, subject to the following conditions:
18 // The above copyright notice and this permission notice shall be included in
19 // all copies or substantial portions of the Software.
21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
22 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
24 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
25 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
26 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
34 using System.Threading;
35 using System.Threading.Tasks;
36 using System.Collections.Generic;
38 using NUnit.Framework;
40 namespace MonoTests.System.Threading.Tasks
43 public class TaskFactoryTests
45 class CompletedAsyncResult : IAsyncResult
47 public object AsyncState
49 get { throw new NotImplementedException (); }
52 public WaitHandle AsyncWaitHandle
54 get { throw new NotImplementedException (); }
57 public bool CompletedSynchronously
59 get { throw new NotImplementedException (); }
62 public bool IsCompleted
68 class TestAsyncResult : IAsyncResult
70 WaitHandle wh = new ManualResetEvent (true);
72 public object AsyncState
74 get { throw new NotImplementedException (); }
77 public WaitHandle AsyncWaitHandle
85 public bool CompletedSynchronously
87 get { throw new NotImplementedException (); }
90 public bool IsCompleted
96 class TestScheduler : TaskScheduler
98 public bool ExecutedInline { get; set; }
100 protected override void QueueTask (Task task)
102 throw new NotImplementedException ();
105 protected override bool TryDequeue (Task task)
107 throw new NotImplementedException ();
110 protected override bool TryExecuteTaskInline (Task task, bool taskWasPreviouslyQueued)
112 if (taskWasPreviouslyQueued)
113 throw new ArgumentException ("taskWasPreviouslyQueued");
115 if (task.Status != TaskStatus.WaitingToRun)
116 throw new ArgumentException ("task.Status");
118 ExecutedInline = true;
119 return TryExecuteTask (task);
122 protected override IEnumerable<Task> GetScheduledTasks ()
124 throw new NotImplementedException ();
134 this.factory = Task.Factory;
138 public void StartNewTest ()
141 factory.StartNew (() => result = true).Wait ();
142 Assert.IsTrue (result);
146 public void NoDefaultScheduler ()
148 Assert.IsNull (factory.Scheduler, "#1");
152 public void ContinueWhenAll_Simple ()
154 var mre = new ManualResetEventSlim (false);
156 Task[] tasks = new Task[3];
157 tasks[0] = new Task (() => { Thread.Sleep (0); Assert.IsTrue (mre.Wait (3000)); });
158 tasks[1] = new Task (() => { Assert.IsTrue (mre.Wait (3000)); });
159 tasks[2] = new Task (() => { Assert.IsTrue (mre.Wait (3000)); });
162 Task cont = factory.ContinueWhenAll (tasks, ts => {
163 Assert.AreEqual (tasks, ts, "#0");
167 foreach (Task t in tasks)
172 Assert.IsTrue (cont.Wait (1000), "#1");
173 Assert.IsTrue (ran, "#2");
177 public void ContinueWhenAll_WithMixedCompletionState ()
179 var mre = new ManualResetEventSlim ();
180 var task = Task.Factory.StartNew (() => mre.Wait (200));
181 var contFailed = task.ContinueWith (t => {}, TaskContinuationOptions.OnlyOnFaulted);
182 var contCanceled = task.ContinueWith (t => {}, TaskContinuationOptions.OnlyOnCanceled);
183 var contSuccess = task.ContinueWith (t => {}, TaskContinuationOptions.OnlyOnRanToCompletion);
186 var cont = Task.Factory.ContinueWhenAll (new Task[] { contFailed, contCanceled, contSuccess }, _ => ran = true);
192 Assert.AreEqual (TaskStatus.RanToCompletion, cont.Status);
196 public void ContinueWhenAll_InvalidArguments ()
199 factory.ContinueWhenAll (null, delegate { });
201 } catch (ArgumentNullException) {
205 factory.ContinueWhenAll (new Task[0], delegate { });
207 } catch (ArgumentException) {
211 factory.ContinueWhenAll (new Task[] { null }, delegate { });
213 } catch (ArgumentException) {
216 var tasks = new Task [] {
217 factory.StartNew (delegate {})
221 factory.ContinueWhenAll (tasks, null);
223 } catch (ArgumentException) {
227 factory.ContinueWhenAll (tasks, delegate { }, CancellationToken.None, TaskContinuationOptions.None, null);
229 } catch (ArgumentException) {
233 factory.ContinueWhenAll (tasks, delegate { }, CancellationToken.None, TaskContinuationOptions.OnlyOnCanceled, null);
235 } catch (ArgumentException) {
240 public void ContinueWhenAny_Simple ()
242 var t1 = new ManualResetEvent (false);
243 var t2 = new ManualResetEvent (false);
245 var tasks = new Task[2] {
246 Task.Factory.StartNew (() => { t1.WaitOne (3000); }),
247 Task.Factory.StartNew (() => { t2.WaitOne (3000); })
251 var ct = new CancellationToken ();
252 Task cont = factory.ContinueWhenAny (tasks, t => {
253 Assert.AreEqual (tasks[0], t, "#1");
257 Assert.AreEqual (TaskStatus.WaitingForActivation, cont.Status, "#2");
261 Assert.IsTrue (cont.Wait (2000), "#10");
262 Assert.IsTrue (ran, "#11");
268 public void ContinueWhenAny_InvalidArguments ()
271 factory.ContinueWhenAny (null, delegate { });
273 } catch (ArgumentNullException) {
277 factory.ContinueWhenAny (new Task[0], delegate { });
279 } catch (ArgumentException) {
283 factory.ContinueWhenAny (new Task[] { null }, delegate { });
285 } catch (ArgumentException) {
288 var tasks = new Task [] {
289 factory.StartNew (delegate {})
293 factory.ContinueWhenAny (tasks, null);
295 } catch (ArgumentException) {
299 factory.ContinueWhenAny (tasks, delegate { }, CancellationToken.None, TaskContinuationOptions.None, null);
301 } catch (ArgumentException) {
305 factory.ContinueWhenAny (tasks, delegate { }, CancellationToken.None, TaskContinuationOptions.OnlyOnCanceled, null);
307 } catch (ArgumentException) {
312 public void FromAsyncBeginInvoke_WithResult ()
316 Func<int, int> func = (i) => {
317 Assert.IsTrue (Thread.CurrentThread.IsThreadPoolThread);
318 result = true; return i + 3;
321 var task = factory.FromAsync<int, int> (func.BeginInvoke, func.EndInvoke, 1, "state", TaskCreationOptions.AttachedToParent);
322 Assert.IsTrue (task.Wait (5000), "#1");
323 Assert.IsTrue (result, "#2");
324 Assert.AreEqual (4, task.Result, "#3");
325 Assert.AreEqual ("state", (string) task.AsyncState, "#4");
326 Assert.AreEqual (TaskCreationOptions.AttachedToParent, task.CreationOptions, "#5");
330 public void FromAsyncBeginMethod_DirectResult ()
333 bool continuationTest = false;
335 Func<int, int> func = (i) => { result = true; return i + 3; };
336 Task<int> task = factory.FromAsync<int> (func.BeginInvoke (1, delegate { }, null), func.EndInvoke);
337 var cont = task.ContinueWith (_ => continuationTest = true, TaskContinuationOptions.ExecuteSynchronously);
341 Assert.IsTrue (result);
342 Assert.IsTrue (continuationTest);
343 Assert.AreEqual (4, task.Result);
347 public void FromAsyncBeginMethod_Exception ()
350 bool continuationTest = false;
352 Func<int, int> func = (i) => { result = true; throw new ApplicationException ("bleh"); };
353 Task<int> task = factory.FromAsync<int, int> (func.BeginInvoke, func.EndInvoke, 1, null);
354 var cont = task.ContinueWith (_ => continuationTest = true, TaskContinuationOptions.ExecuteSynchronously);
360 Assert.IsTrue (result);
361 Assert.IsTrue (continuationTest);
362 Assert.IsNotNull (task.Exception);
363 var agg = task.Exception;
364 Assert.AreEqual (1, agg.InnerExceptions.Count);
365 Assert.IsInstanceOfType (typeof (ApplicationException), agg.InnerExceptions[0]);
366 Assert.AreEqual (TaskStatus.Faulted, task.Status);
371 } catch (AggregateException) {
376 public void FromAsync_ArgumentsCheck ()
378 var result = new CompletedAsyncResult ();
380 factory.FromAsync (null, l => { });
382 } catch (ArgumentNullException) {
386 factory.FromAsync (result, null);
388 } catch (ArgumentNullException) {
392 factory.FromAsync (result, l => { }, TaskCreationOptions.LongRunning);
394 } catch (ArgumentOutOfRangeException) {
398 factory.FromAsync (result, l => { }, TaskCreationOptions.PreferFairness);
400 } catch (ArgumentOutOfRangeException) {
404 factory.FromAsync (result, l => { }, TaskCreationOptions.None, null);
406 } catch (ArgumentNullException) {
410 factory.FromAsync (null, l => { }, null, TaskCreationOptions.None);
412 } catch (ArgumentNullException) {
416 factory.FromAsync ((a, b) => null, l => { }, null, TaskCreationOptions.LongRunning);
418 } catch (ArgumentOutOfRangeException) {
423 public void FromAsync_Completed ()
425 var completed = new CompletedAsyncResult ();
428 Action<IAsyncResult> end = l => {
429 Assert.IsFalse (Thread.CurrentThread.IsThreadPoolThread, "#2");
430 valid = l == completed;
432 Task task = factory.FromAsync (completed, end);
433 Assert.IsTrue (valid == true, "#1");
437 public void FromAsync_CompletedWithException ()
439 var completed = new CompletedAsyncResult ();
441 Action<IAsyncResult> end = l => {
442 throw new ApplicationException ();
444 Task task = factory.FromAsync (completed, end);
445 Assert.AreEqual (TaskStatus.Faulted, task.Status, "#1");
449 public void FromAsync_CompletedCanceled ()
451 var completed = new CompletedAsyncResult ();
453 Action<IAsyncResult> end = l => {
454 throw new OperationCanceledException ();
456 Task task = factory.FromAsync (completed, end);
457 Assert.AreEqual (TaskStatus.Canceled, task.Status, "#1");
458 Assert.IsNull (task.Exception, "#2");
462 public void FromAsync_SimpleAsyncResult ()
464 var result = new TestAsyncResult ();
467 var task = factory.FromAsync (result, l => {
471 Assert.IsTrue (task.Wait (1000), "#1");
472 Assert.IsTrue (called, "#2");
476 public void FromAsync_ResultException ()
478 var result = new TestAsyncResult ();
480 var task = factory.FromAsync (result, l => {
481 throw new ApplicationException ();
485 Assert.IsFalse (task.Wait (1000), "#1");
486 } catch (AggregateException) {
489 Assert.AreEqual (TaskStatus.Faulted, task.Status, "#2");
493 public void FromAsync_ReturnInt ()
495 var result = new TestAsyncResult ();
498 var task = factory.FromAsync<int> (result, l => {
503 Assert.IsTrue (task.Wait (1000), "#1");
504 Assert.IsTrue (called, "#2");
505 Assert.AreEqual (4, task.Result, "#3");
509 public void FromAsync_Scheduler_Explicit ()
511 var result = new TestAsyncResult ();
513 var scheduler = new TestScheduler ();
515 var task = factory.FromAsync (result, l => {
517 }, TaskCreationOptions.None, scheduler);
519 Assert.IsTrue (task.Wait (5000), "#1");
520 Assert.IsTrue (called, "#2");
521 Assert.IsTrue (scheduler.ExecutedInline, "#3");
525 public void FromAsync_Scheduler_Implicit ()
527 var result = new TestAsyncResult ();
529 var scheduler = new TestScheduler ();
531 factory = new TaskFactory (scheduler);
533 Task task = factory.FromAsync (result, l => {
534 Assert.IsTrue (Thread.CurrentThread.IsThreadPoolThread, "#6");
536 }, TaskCreationOptions.AttachedToParent);
538 Assert.AreEqual (TaskCreationOptions.AttachedToParent, task.CreationOptions, "#1");
539 Assert.IsNull (task.AsyncState, "#2");
540 Assert.IsTrue (task.Wait (5000), "#3");
541 Assert.IsTrue (called, "#4");
542 Assert.IsTrue (scheduler.ExecutedInline, "#5");
546 public void FromAsync_BeginCallback ()
549 bool called2 = false;
551 var task = factory.FromAsync (
556 if ((TaskCreationOptions) c != TaskCreationOptions.AttachedToParent)
559 Assert.IsFalse (Thread.CurrentThread.IsThreadPoolThread, "#12");
568 "h", TaskCreationOptions.AttachedToParent);
570 Assert.AreEqual (TaskCreationOptions.None, task.CreationOptions, "#1");
571 Assert.AreEqual (TaskCreationOptions.AttachedToParent, (TaskCreationOptions) task.AsyncState, "#2");
572 Assert.IsTrue (task.Wait (5000), "#3");
573 Assert.IsTrue (called, "#4");
574 Assert.IsTrue (called2, "#5");
578 public void StartNewCancelled ()
580 var cts = new CancellationTokenSource ();
583 var task = factory.StartNew (() => Assert.Fail ("Should never be called"), cts.Token);
586 } catch (InvalidOperationException) {
589 Assert.IsTrue (task.IsCanceled, "#2");