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// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
using System;
using System.Diagnostics;
using System.Reactive.Concurrency;
using System.Reactive.Disposables;
using System.Threading;
using Microsoft.Reactive.Testing;
using Microsoft.VisualStudio.TestTools.UnitTesting;
namespace ReactiveTests.Tests
{
[TestClass]
public class NewThreadSchedulerTest
{
[TestMethod]
public void NewThread_ArgumentChecking()
{
ReactiveAssert.Throws<ArgumentNullException>(() => new NewThreadScheduler(null));
ReactiveAssert.Throws<ArgumentNullException>(() => NewThreadScheduler.Default.Schedule<int>(42, default(Func<IScheduler, int, IDisposable>)));
ReactiveAssert.Throws<ArgumentNullException>(() => NewThreadScheduler.Default.Schedule<int>(42, DateTimeOffset.Now, default(Func<IScheduler, int, IDisposable>)));
ReactiveAssert.Throws<ArgumentNullException>(() => NewThreadScheduler.Default.Schedule<int>(42, TimeSpan.Zero, default(Func<IScheduler, int, IDisposable>)));
ReactiveAssert.Throws<ArgumentNullException>(() => NewThreadScheduler.Default.SchedulePeriodic<int>(42, TimeSpan.FromSeconds(1), default(Func<int, int>)));
ReactiveAssert.Throws<ArgumentNullException>(() => NewThreadScheduler.Default.ScheduleLongRunning<int>(42, default(Action<int, ICancelable>)));
ReactiveAssert.Throws<ArgumentOutOfRangeException>(() => NewThreadScheduler.Default.SchedulePeriodic<int>(42, TimeSpan.FromSeconds(-1), _ => _));
}
[TestMethod]
public void NewThread_Now()
{
var res = NewThreadScheduler.Default.Now - DateTime.Now;
Assert.IsTrue(res.Seconds < 1);
}
[TestMethod]
public void NewThread_ScheduleAction()
{
var id = Thread.CurrentThread.ManagedThreadId;
var nt = NewThreadScheduler.Default;
var evt = new ManualResetEvent(false);
nt.Schedule(() => { Assert.AreNotEqual(id, Thread.CurrentThread.ManagedThreadId); evt.Set(); });
evt.WaitOne();
}
#if !SILVERLIGHT
[TestMethod]
[Ignore]
public void NewThread_ScheduleActionDue()
{
var id = Thread.CurrentThread.ManagedThreadId;
var nt = NewThreadScheduler.Default;
var evt = new ManualResetEvent(false);
var sw = new Stopwatch();
sw.Start();
nt.Schedule(TimeSpan.FromSeconds(0.2), () => { sw.Stop(); Assert.AreNotEqual(id, Thread.CurrentThread.ManagedThreadId); evt.Set(); });
evt.WaitOne();
Assert.IsTrue(sw.ElapsedMilliseconds > 180, "due " + sw.ElapsedMilliseconds);
}
#endif
#if !NO_PERF
#if !NO_STOPWATCH
[TestMethod]
public void Stopwatch()
{
StopwatchTest.Run(NewThreadScheduler.Default);
}
#endif
#endif
[TestMethod]
public void NewThread_Periodic()
{
var n = 0;
var e = new ManualResetEvent(false);
var d = NewThreadScheduler.Default.SchedulePeriodic(TimeSpan.FromMilliseconds(25), () =>
{
if (Interlocked.Increment(ref n) == 10)
e.Set();
});
if (!e.WaitOne(10000))
Assert.Fail();
d.Dispose();
}
[TestMethod]
public void NewThread_Periodic_NonReentrant()
{
var n = 0;
var fail = false;
var d = NewThreadScheduler.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);
}
}
}
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