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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;
#if NUNIT
using NUnit.Framework;
using TestClassAttribute = NUnit.Framework.TestFixtureAttribute;
using TestMethodAttribute = NUnit.Framework.TestAttribute;
using TestInitializeAttribute = NUnit.Framework.SetUpAttribute;
#else
using Microsoft.VisualStudio.TestTools.UnitTesting;
#endif
namespace ReactiveTests.Tests
{
[TestClass]
public class SynchronizationContextSchedulerTest
{
[TestMethod]
public void SynchronizationContext_ArgumentChecking()
{
var ms = new MySync();
var s = new SynchronizationContextScheduler(ms);
ReactiveAssert.Throws<ArgumentNullException>(() => new SynchronizationContextScheduler(null));
ReactiveAssert.Throws<ArgumentNullException>(() => new SynchronizationContextScheduler(null, true));
ReactiveAssert.Throws<ArgumentNullException>(() => s.Schedule<int>(42, default(Func<IScheduler, int, IDisposable>)));
ReactiveAssert.Throws<ArgumentNullException>(() => s.Schedule<int>(42, DateTimeOffset.Now, default(Func<IScheduler, int, IDisposable>)));
ReactiveAssert.Throws<ArgumentNullException>(() => s.Schedule<int>(42, TimeSpan.Zero, default(Func<IScheduler, int, IDisposable>)));
}
[TestMethod]
public void SynchronizationContext_Now()
{
var ms = new MySync();
var s = new SynchronizationContextScheduler(ms);
var res = s.Now - DateTime.Now;
Assert.IsTrue(res.Seconds < 1);
}
[TestMethod]
public void SynchronizationContext_ScheduleAction()
{
var ms = new MySync();
var s = new SynchronizationContextScheduler(ms);
var ran = false;
s.Schedule(() => { ran = true; });
Assert.IsTrue(ms.Count == 1);
Assert.IsTrue(ran);
}
[TestMethod]
public void SynchronizationContext_ScheduleAction_TimeSpan()
{
var ms = new MySync();
var s = new SynchronizationContextScheduler(ms);
var e = new ManualResetEvent(false);
s.Schedule(TimeSpan.FromMilliseconds(1), () => { e.Set(); });
e.WaitOne();
Assert.IsTrue(ms.Count == 1);
}
[TestMethod]
public void SynchronizationContext_ScheduleAction_DateTimeOffset()
{
var ms = new MySync();
var s = new SynchronizationContextScheduler(ms);
var e = new ManualResetEvent(false);
s.Schedule(DateTimeOffset.Now.AddMilliseconds(100), () => { e.Set(); });
e.WaitOne();
Assert.IsTrue(ms.Count >= 1); // Can be > 1 in case of timer queue retry operations.
}
[TestMethod]
public void SynchronizationContext_ScheduleActionError()
{
var ms = new MySync();
var s = new SynchronizationContextScheduler(ms);
var ex = new Exception();
try
{
s.Schedule(() => { throw ex; });
Assert.Fail();
}
catch (Exception e)
{
Assert.AreSame(e, ex);
}
Assert.IsTrue(ms.Count == 1);
}
#if !SILVERLIGHT
[TestMethod]
[Ignore]
public void SynchronizationContext_ScheduleActionDue()
{
var ms = new MySync();
var s = new SynchronizationContextScheduler(ms);
var evt = new ManualResetEvent(false);
var sw = new Stopwatch();
sw.Start();
s.Schedule(TimeSpan.FromSeconds(0.2), () => { sw.Stop(); evt.Set(); });
evt.WaitOne();
Assert.IsTrue(sw.ElapsedMilliseconds > 180, "due " + sw.ElapsedMilliseconds);
Assert.IsTrue(ms.Count == 1);
}
#endif
class MySync : SynchronizationContext
{
public int Count { get; private set; }
public override void Post(SendOrPostCallback d, object state)
{
Count++;
d(state);
}
public override void Send(SendOrPostCallback d, object state)
{
throw new NotImplementedException();
}
public int Started { get; private set; }
public override void OperationStarted()
{
base.OperationStarted();
Started++;
}
public int Completed { get; private set; }
public override void OperationCompleted()
{
base.OperationCompleted();
Completed++;
}
}
[TestMethod]
public void SynchronizationContext_StartedCompleted()
{
var ms = new MySync();
var s = new SynchronizationContextScheduler(ms);
var started = 0;
s.Schedule<int>(42, TimeSpan.Zero, (self, x) => { started = ms.Started; return Disposable.Empty; });
Assert.IsTrue(started == 1);
Assert.IsTrue(ms.Count == 1);
Assert.IsTrue(ms.Completed == 1);
}
[TestMethod]
public void SynchronizationContext_DontPost_Different()
{
var ms = new MySync();
var s = new SynchronizationContextScheduler(ms, false);
var ran = false;
s.Schedule(() => { ran = true; });
Assert.IsTrue(ms.Count == 1);
Assert.IsTrue(ran);
}
[TestMethod]
public void SynchronizationContext_DontPost_Same()
{
var count = 0;
var ran = false;
var t = new Thread(() =>
{
var ms = new MySync();
SynchronizationContext.SetSynchronizationContext(ms);
var s = new SynchronizationContextScheduler(ms, false);
s.Schedule(() => { ran = true; });
count = ms.Count;
});
t.Start();
t.Join();
Assert.IsTrue(count == 0 /* no post */);
Assert.IsTrue(ran);
}
[TestMethod]
public void SynchronizationContext_AlwaysPost_Different()
{
var ms = new MySync();
var s = new SynchronizationContextScheduler(ms, true);
var ran = false;
s.Schedule(() => { ran = true; });
Assert.IsTrue(ms.Count == 1);
Assert.IsTrue(ran);
}
[TestMethod]
public void SynchronizationContext_AlwaysPost_Same()
{
var count = 0;
var ran = false;
var t = new Thread(() =>
{
var ms = new MySync();
SynchronizationContext.SetSynchronizationContext(ms);
var s = new SynchronizationContextScheduler(ms, true);
s.Schedule(() => { ran = true; });
count = ms.Count;
});
t.Start();
t.Join();
Assert.IsTrue(count == 1 /* post */);
Assert.IsTrue(ran);
}
}
}
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