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// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
#if HAS_WINFORMS
using System;
using System.Reactive.Concurrency;
using System.Reactive.Disposables;
using System.Diagnostics;
using System.Threading;
using System.Windows.Forms;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using Microsoft.Reactive.Testing;
namespace ReactiveTests.Tests
{
[TestClass]
public class ControlSchedulerTest
{
[TestMethod]
public void Ctor_ArgumentChecking()
{
ReactiveAssert.Throws<ArgumentNullException>(() => new ControlScheduler(null));
}
[TestMethod]
public void Control()
{
var lbl = new Label();
Assert.AreSame(lbl, new ControlScheduler(lbl).Control);
}
[TestMethod]
public void Now()
{
var res = new ControlScheduler(new Label()).Now - DateTime.Now;
Assert.IsTrue(res.Seconds < 1);
}
[TestMethod]
public void Schedule_ArgumentChecking()
{
var s = new ControlScheduler(new Label());
ReactiveAssert.Throws<ArgumentNullException>(() => s.Schedule(42, default(Func<IScheduler, int, IDisposable>)));
ReactiveAssert.Throws<ArgumentNullException>(() => s.Schedule(42, TimeSpan.FromSeconds(1), default(Func<IScheduler, int, IDisposable>)));
ReactiveAssert.Throws<ArgumentNullException>(() => s.Schedule(42, DateTimeOffset.Now, default(Func<IScheduler, int, IDisposable>)));
}
[TestMethod]
public void Schedule()
{
var evt = new ManualResetEvent(false);
var id = Thread.CurrentThread.ManagedThreadId;
var lbl = CreateLabel();
var sch = new ControlScheduler(lbl);
sch.Schedule(() => { lbl.Text = "Okay"; Assert.AreNotEqual(id, Thread.CurrentThread.ManagedThreadId); });
sch.Schedule(() => { Assert.AreEqual("Okay", lbl.Text); Assert.AreNotEqual(id, Thread.CurrentThread.ManagedThreadId); evt.Set(); });
evt.WaitOne();
Application.Exit();
}
[TestMethod]
public void ScheduleError()
{
var evt = new ManualResetEvent(false);
var ex = new Exception();
var lbl = CreateLabelWithHandler(e => {
Assert.AreSame(ex, e);
evt.Set();
});
var sch = new ControlScheduler(lbl);
sch.Schedule(() => { throw ex; });
evt.WaitOne();
Application.Exit();
}
[TestMethod]
public void ScheduleRelative()
{
ScheduleRelative_(TimeSpan.FromSeconds(0.1));
}
[TestMethod]
public void ScheduleRelative_Zero()
{
ScheduleRelative_(TimeSpan.Zero);
}
private void ScheduleRelative_(TimeSpan delay)
{
var evt = new ManualResetEvent(false);
var id = Thread.CurrentThread.ManagedThreadId;
var lbl = CreateLabel();
var sch = new ControlScheduler(lbl);
sch.Schedule(delay, () =>
{
lbl.Text = "Okay";
Assert.AreNotEqual(id, Thread.CurrentThread.ManagedThreadId);
sch.Schedule(() =>
{
Assert.AreEqual("Okay", lbl.Text);
Assert.AreNotEqual(id, Thread.CurrentThread.ManagedThreadId);
evt.Set();
});
});
evt.WaitOne();
Application.Exit();
}
[TestMethod]
public void ScheduleRelative_Nested()
{
var evt = new ManualResetEvent(false);
var id = Thread.CurrentThread.ManagedThreadId;
var lbl = CreateLabel();
var sch = new ControlScheduler(lbl);
sch.Schedule(TimeSpan.FromSeconds(0.1), () =>
{
sch.Schedule(TimeSpan.FromSeconds(0.1), () =>
{
lbl.Text = "Okay";
Assert.AreNotEqual(id, Thread.CurrentThread.ManagedThreadId);
sch.Schedule(() =>
{
Assert.AreEqual("Okay", lbl.Text);
Assert.AreNotEqual(id, Thread.CurrentThread.ManagedThreadId);
evt.Set();
});
});
});
evt.WaitOne();
Application.Exit();
}
[TestMethod]
public void ScheduleRelative_Cancel()
{
var evt = new ManualResetEvent(false);
var id = Thread.CurrentThread.ManagedThreadId;
var lbl = CreateLabel();
var sch = new ControlScheduler(lbl);
sch.Schedule(TimeSpan.FromSeconds(0.1), () =>
{
lbl.Text = "Okay";
Assert.AreNotEqual(id, Thread.CurrentThread.ManagedThreadId);
var d = sch.Schedule(TimeSpan.FromSeconds(0.1), () =>
{
lbl.Text = "Oops!";
});
sch.Schedule(() =>
{
d.Dispose();
});
sch.Schedule(TimeSpan.FromSeconds(0.2), () =>
{
Assert.AreEqual("Okay", lbl.Text);
Assert.AreNotEqual(id, Thread.CurrentThread.ManagedThreadId);
evt.Set();
});
});
evt.WaitOne();
Application.Exit();
}
[TestMethod]
public void SchedulePeriodic_ArgumentChecking()
{
var s = new ControlScheduler(new Label());
ReactiveAssert.Throws<ArgumentNullException>(() => s.SchedulePeriodic(42, TimeSpan.FromSeconds(1), default(Func<int, int>)));
ReactiveAssert.Throws<ArgumentOutOfRangeException>(() => s.SchedulePeriodic(42, TimeSpan.Zero, x => x));
ReactiveAssert.Throws<ArgumentOutOfRangeException>(() => s.SchedulePeriodic(42, TimeSpan.FromMilliseconds(1).Subtract(TimeSpan.FromTicks(1)), x => x));
}
[TestMethod]
public void SchedulePeriodic()
{
var evt = new ManualResetEvent(false);
var id = Thread.CurrentThread.ManagedThreadId;
var lbl = CreateLabel();
var sch = new ControlScheduler(lbl);
var d = new SingleAssignmentDisposable();
d.Disposable = sch.SchedulePeriodic(1, TimeSpan.FromSeconds(0.1), n =>
{
lbl.Text = "Okay " + n;
Assert.AreNotEqual(id, Thread.CurrentThread.ManagedThreadId);
if (n == 3)
{
d.Dispose();
sch.Schedule(TimeSpan.FromSeconds(0.2), () =>
{
Assert.AreEqual("Okay 3", lbl.Text);
Assert.AreNotEqual(id, Thread.CurrentThread.ManagedThreadId);
evt.Set();
});
}
if (n > 3)
{
Assert.Fail();
}
return n + 1;
});
evt.WaitOne();
Application.Exit();
}
[TestMethod]
public void SchedulePeriodic_Nested()
{
var evt = new ManualResetEvent(false);
var id = Thread.CurrentThread.ManagedThreadId;
var lbl = CreateLabel();
var sch = new ControlScheduler(lbl);
sch.Schedule(() =>
{
lbl.Text = "Okay";
var d = new SingleAssignmentDisposable();
d.Disposable = sch.SchedulePeriodic(1, TimeSpan.FromSeconds(0.1), n =>
{
lbl.Text = "Okay " + n;
Assert.AreNotEqual(id, Thread.CurrentThread.ManagedThreadId);
if (n == 3)
{
d.Dispose();
sch.Schedule(TimeSpan.FromSeconds(0.2), () =>
{
Assert.AreEqual("Okay 3", lbl.Text);
Assert.AreNotEqual(id, Thread.CurrentThread.ManagedThreadId);
evt.Set();
});
}
return n + 1;
});
});
evt.WaitOne();
Application.Exit();
}
private Label CreateLabel()
{
var loaded = new ManualResetEvent(false);
var lbl = default(Label);
var t = new Thread(() =>
{
lbl = new Label();
var frm = new Form { Controls = { lbl }, Width = 0, Height = 0, FormBorderStyle = FormBorderStyle.None, ShowInTaskbar = false };
frm.Load += (_, __) =>
{
loaded.Set();
};
Application.Run(frm);
});
t.SetApartmentState(ApartmentState.STA);
t.Start();
loaded.WaitOne();
return lbl;
}
private Label CreateLabelWithHandler(Action<Exception> handler)
{
var loaded = new ManualResetEvent(false);
var lbl = default(Label);
var t = new Thread(() =>
{
lbl = new Label();
var frm = new Form { Controls = { lbl }, Width = 0, Height = 0, FormBorderStyle = FormBorderStyle.None, ShowInTaskbar = false };
frm.Load += (_, __) =>
{
loaded.Set();
};
Application.ThreadException += (o, e) =>
{
handler(e.Exception);
};
Application.Run(frm);
});
t.SetApartmentState(ApartmentState.STA);
t.Start();
loaded.WaitOne();
return lbl;
}
}
}
#endif
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