352 lines
8.8 KiB
C#
352 lines
8.8 KiB
C#
//
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// BroadcastBlockTest.cs
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//
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// Author:
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// Jérémie "garuma" Laval <jeremie.laval@gmail.com>
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// Petr Onderka <gsvick@gmail.com>
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//
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// Copyright (c) 2011 Jérémie "garuma" Laval
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// Copyright (c) 2012 Petr Onderka
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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using System;
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using System.Collections.Generic;
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using System.Threading;
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using System.Threading.Tasks.Dataflow;
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using NUnit.Framework;
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namespace MonoTests.System.Threading.Tasks.Dataflow {
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[TestFixture]
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public class BroadcastBlockTest {
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[Test]
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public void BasicUsageTest ()
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{
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bool act1 = false, act2 = false;
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var evt = new CountdownEvent (2);
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var broadcast = new BroadcastBlock<int> (null);
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var action1 = new ActionBlock<int> (i =>
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{
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act1 = i == 42;
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evt.Signal ();
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});
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var action2 = new ActionBlock<int> (i =>
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{
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act2 = i == 42;
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evt.Signal ();
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});
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broadcast.LinkTo (action1);
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broadcast.LinkTo (action2);
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Assert.IsTrue (broadcast.Post (42));
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Assert.IsTrue (evt.Wait (1000));
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Assert.IsTrue (act1);
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Assert.IsTrue (act2);
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}
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[Test]
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public void LinkAfterPostTest ()
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{
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bool act = false;
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var evt = new ManualResetEventSlim ();
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var broadcast = new BroadcastBlock<int> (null);
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var action = new ActionBlock<int> (i =>
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{
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act = i == 42;
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evt.Set ();
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});
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Assert.IsTrue (broadcast.Post (42));
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broadcast.LinkTo (action);
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Assert.IsTrue (evt.Wait (1000));
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Assert.IsTrue (act);
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}
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[Test]
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public void PostponedTest ()
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{
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var broadcast = new BroadcastBlock<int> (null);
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var target = new BufferBlock<int> (
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new DataflowBlockOptions { BoundedCapacity = 1 });
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broadcast.LinkTo (target);
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Assert.IsTrue (target.Post (1));
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Assert.IsTrue (broadcast.Post (2));
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Assert.AreEqual (1, target.Receive (TimeSpan.FromMilliseconds (0)));
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Assert.AreEqual (2, target.Receive (TimeSpan.FromMilliseconds (1000)));
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}
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[Test]
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public void ConsumeChangedTest ()
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{
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var scheduler = new TestScheduler ();
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var broadcast = new BroadcastBlock<int> (null,
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new DataflowBlockOptions { TaskScheduler = scheduler });
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var target = new TestTargetBlock<int> { Postpone = true };
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broadcast.LinkTo (target);
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Assert.IsFalse (target.HasPostponed);
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Assert.IsTrue (broadcast.Post (1));
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scheduler.ExecuteAll ();
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Assert.IsTrue (target.HasPostponed);
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Assert.IsTrue (broadcast.Post (2));
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scheduler.ExecuteAll ();
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int value;
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Assert.IsTrue (target.RetryPostponed (out value));
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Assert.AreEqual (2, value);
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}
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[Test]
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public void ReserveConsumeChangedTest ()
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{
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var scheduler = new TestScheduler ();
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var broadcast = new BroadcastBlock<int> (null,
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new DataflowBlockOptions { TaskScheduler = scheduler });
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var target = new TestTargetBlock<int> { Postpone = true };
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broadcast.LinkTo (target);
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Assert.IsFalse (target.HasPostponed);
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Assert.IsTrue (broadcast.Post (1));
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scheduler.ExecuteAll ();
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Assert.IsTrue (target.HasPostponed);
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Assert.IsTrue (target.ReservePostponed ());
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Assert.IsTrue (broadcast.Post (2));
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scheduler.ExecuteAll ();
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int value;
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Assert.IsTrue (target.RetryPostponed (out value));
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Assert.AreEqual (1, value);
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}
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[Test]
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public void ReserveChangedTest ()
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{
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var scheduler = new TestScheduler ();
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var broadcast = new BroadcastBlock<int> (null,
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new DataflowBlockOptions { TaskScheduler = scheduler });
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var target = new TestTargetBlock<int> { Postpone = true };
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broadcast.LinkTo (target);
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Assert.IsFalse (target.HasPostponed);
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Assert.IsTrue (broadcast.Post (1));
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scheduler.ExecuteAll ();
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Assert.IsTrue (target.HasPostponed);
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Assert.IsTrue(broadcast.Post(2));
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scheduler.ExecuteAll ();
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Assert.IsTrue (target.ReservePostponed ());
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int value;
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Assert.IsTrue (target.RetryPostponed (out value));
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Assert.AreEqual (2, value);
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}
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[Test]
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public void QueuedMessagesTest ()
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{
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var scheduler = new TestScheduler ();
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var broadcast = new BroadcastBlock<int> (null,
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new DataflowBlockOptions { TaskScheduler = scheduler });
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var target = new BufferBlock<int> ();
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broadcast.LinkTo (target);
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Assert.IsTrue (broadcast.Post (1));
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Assert.IsTrue (broadcast.Post (2));
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AssertEx.Throws<TimeoutException> (
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() => target.Receive (TimeSpan.FromMilliseconds (1000)));
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scheduler.ExecuteAll ();
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int item;
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Assert.IsTrue (target.TryReceive (out item));
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Assert.AreEqual (1, item);
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Assert.IsTrue (target.TryReceive (out item));
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Assert.AreEqual (2, item);
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}
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[Test]
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public void BoundedQueuedTest ()
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{
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var scheduler = new TestScheduler ();
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var broadcast = new BroadcastBlock<int> (
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null,
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new DataflowBlockOptions { TaskScheduler = scheduler, BoundedCapacity = 1 });
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Assert.IsTrue (broadcast.Post (1));
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Assert.IsFalse (broadcast.Post (2));
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}
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[Test]
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public void BoundedPostponedTest ()
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{
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var scheduler = new TestScheduler ();
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var broadcast = new BroadcastBlock<int> (
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null,
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new DataflowBlockOptions { TaskScheduler = scheduler, BoundedCapacity = 1 });
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ITargetBlock<int> target = broadcast;
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var source = new TestSourceBlock<int> ();
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Assert.IsTrue (broadcast.Post (1));
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var header = new DataflowMessageHeader (1);
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source.AddMessage (header, 2);
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Assert.AreEqual (DataflowMessageStatus.Postponed,
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target.OfferMessage (header, 2, source, false));
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Assert.IsFalse (source.WasConsumed (header));
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scheduler.ExecuteAll ();
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Assert.IsTrue (source.WasConsumed (header));
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}
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[Test]
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public void CloningTest ()
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{
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object act1 = null, act2 = null;
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var evt = new CountdownEvent (2);
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object source = new object ();
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var broadcast = new BroadcastBlock<object> (o => new object ());
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var action1 = new ActionBlock<object> (i =>
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{
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act1 = i;
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evt.Signal ();
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});
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var action2 = new ActionBlock<object> (i =>
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{
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act2 = i;
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evt.Signal ();
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});
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broadcast.LinkTo (action1);
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broadcast.LinkTo (action2);
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Assert.IsTrue (broadcast.Post (source));
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Assert.IsTrue (evt.Wait (1000));
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Assert.IsNotNull (act1);
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Assert.IsNotNull (act2);
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Assert.IsFalse (source.Equals (act1));
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Assert.IsFalse (source.Equals (act2));
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Assert.IsFalse (act2.Equals (act1));
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}
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[Test]
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public void TryReceiveTest()
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{
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var scheduler = new TestScheduler();
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var block = new BroadcastBlock<int>(i => i * 10, new DataflowBlockOptions { TaskScheduler = scheduler });
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int item;
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Assert.IsFalse(block.TryReceive(null, out item));
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Assert.IsTrue(block.Post(1));
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Assert.IsTrue(block.Post(2));
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scheduler.ExecuteAll();
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Assert.IsTrue(block.TryReceive(null, out item));
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Assert.AreEqual(20, item);
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// predicate is tested on original value, but returned is cloned
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Assert.IsTrue(block.TryReceive(i => i < 10, out item));
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Assert.AreEqual(20, item);
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}
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[Test]
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public void TryReceiveAllTest()
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{
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var scheduler = new TestScheduler();
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var block = new BroadcastBlock<int>(null, new DataflowBlockOptions { TaskScheduler = scheduler });
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IReceivableSourceBlock<int> source = block;
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Assert.IsTrue(block.Post(1));
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Assert.IsTrue(block.Post(2));
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scheduler.ExecuteAll();
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IList<int> items;
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Assert.IsTrue(source.TryReceiveAll(out items));
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CollectionAssert.AreEqual(new[] { 2 }, items);
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}
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[Test]
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public void DontOfferTwiceTest()
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{
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var scheduler = new TestScheduler ();
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var block = new BroadcastBlock<int> (null,
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new DataflowBlockOptions { TaskScheduler = scheduler });
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var target =
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new TestTargetBlock<int> { Postpone = true };
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block.LinkTo (target);
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Assert.IsFalse (target.HasPostponed);
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Assert.IsTrue (block.Post (1));
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scheduler.ExecuteAll();
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Assert.IsTrue (target.HasPostponed);
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target.Postpone = false;
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int value;
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Assert.IsTrue(target.RetryPostponed(out value));
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Assert.AreEqual(1, value);
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block.LinkTo(new BufferBlock<int>());
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scheduler.ExecuteAll();
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Assert.AreEqual(default(int), target.DirectlyAccepted);
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}
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}
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} |