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// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
#if !NO_TPL
using System;
using System.Reactive.Concurrency;
using System.Threading;
using Microsoft.Reactive.Testing;
using Microsoft.VisualStudio.TestTools.UnitTesting;
namespace ReactiveTests.Tests
{
[TestClass]
public class TaskPoolSchedulerTest
{
[TestMethod]
public void TaskPool_ArgumentChecking()
{
ReactiveAssert.Throws<ArgumentNullException>(() => new TaskPoolScheduler(null));
ReactiveAssert.Throws<ArgumentNullException>(() => TaskPoolScheduler.Default.Schedule<int>(42, default(Func<IScheduler, int, IDisposable>)));
ReactiveAssert.Throws<ArgumentNullException>(() => TaskPoolScheduler.Default.Schedule<int>(42, DateTimeOffset.Now, default(Func<IScheduler, int, IDisposable>)));
ReactiveAssert.Throws<ArgumentNullException>(() => TaskPoolScheduler.Default.Schedule<int>(42, TimeSpan.Zero, default(Func<IScheduler, int, IDisposable>)));
ReactiveAssert.Throws<ArgumentNullException>(() => TaskPoolScheduler.Default.SchedulePeriodic(42, TimeSpan.FromSeconds(1), default(Func<int, int>)));
ReactiveAssert.Throws<ArgumentOutOfRangeException>(() => TaskPoolScheduler.Default.SchedulePeriodic(42, TimeSpan.FromSeconds(-1), _ => _));
}
[TestMethod]
public void TaskPool_Now()
{
var res = TaskPoolScheduler.Default.Now - DateTime.Now;
Assert.IsTrue(res.Seconds < 1);
}
[TestMethod]
public void TaskPool_ScheduleAction()
{
var id = Thread.CurrentThread.ManagedThreadId;
var nt = TaskPoolScheduler.Default;
var evt = new ManualResetEvent(false);
nt.Schedule(() => { Assert.AreNotEqual(id, Thread.CurrentThread.ManagedThreadId); evt.Set(); });
evt.WaitOne();
}
[TestMethod]
public void TaskPool_ScheduleActionDueNow()
{
var id = Thread.CurrentThread.ManagedThreadId;
var nt = TaskPoolScheduler.Default;
var evt = new ManualResetEvent(false);
nt.Schedule(TimeSpan.Zero, () => { Assert.AreNotEqual(id, Thread.CurrentThread.ManagedThreadId); evt.Set(); });
evt.WaitOne();
}
[TestMethod]
public void TaskPool_ScheduleActionDue()
{
var id = Thread.CurrentThread.ManagedThreadId;
var nt = TaskPoolScheduler.Default;
var evt = new ManualResetEvent(false);
nt.Schedule(TimeSpan.FromMilliseconds(1), () => { Assert.AreNotEqual(id, Thread.CurrentThread.ManagedThreadId); evt.Set(); });
evt.WaitOne();
}
[TestMethod]
public void TaskPool_ScheduleActionCancel()
{
var id = Thread.CurrentThread.ManagedThreadId;
var nt = TaskPoolScheduler.Default;
var set = false;
var d = nt.Schedule(TimeSpan.FromSeconds(0.2), () => { Assert.Fail(); set = true; });
d.Dispose();
Thread.Sleep(400);
Assert.IsFalse(set);
}
#if !NO_PERF
[TestMethod]
public void TaskPool_ScheduleLongRunning()
{
var n = 0;
var e = new ManualResetEvent(false);
var gate = new object();
var d = TaskPoolScheduler.Default.ScheduleLongRunning(42, (x, cancel) =>
{
while (!cancel.IsDisposed)
lock (gate)
n++;
e.Set();
});
while (true)
{
lock (gate)
if (n >= 10)
break;
Thread.Sleep(10);
}
d.Dispose();
e.WaitOne();
Assert.IsTrue(n >= 0);
}
#endif
#if !NO_PERF
#if !NO_STOPWATCH
[TestMethod]
public void Stopwatch()
{
StopwatchTest.Run(TaskPoolScheduler.Default);
}
#endif
#endif
[TestMethod]
public void TaskPool_Periodic()
{
var n = 0;
var e = new ManualResetEvent(false);
var d = TaskPoolScheduler.Default.SchedulePeriodic(TimeSpan.FromMilliseconds(25), () =>
{
if (Interlocked.Increment(ref n) == 10)
e.Set();
});
if (!e.WaitOne(10000))
Assert.Fail();
d.Dispose();
}
[TestMethod]
public void TaskPool_Periodic_NonReentrant()
{
var n = 0;
var fail = false;
var d = TaskPoolScheduler.Default.SchedulePeriodic(0, TimeSpan.FromMilliseconds(50), x =>
{
try
{
if (Interlocked.Increment(ref n) > 1) // Without an AsyncLock this would fail.
fail = true;
Thread.Sleep(100);
return x + 1;
}
finally
{
Interlocked.Decrement(ref n);
}
});
Thread.Sleep(500);
d.Dispose();
Assert.IsFalse(fail);
}
}
}
#endif
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