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//
// BackgroundWorkerTest.cs
//
// Author:
// Atsushi Enomoto <atsushi@ximian.com>
//
// Copyright (C) 2007 Novell, Inc.
//
using System;
using System.Threading;
using System.Reflection;
using System.ComponentModel;
using System.Globalization;
using NUnit.Framework;
namespace MonoTests.System.ComponentModel
{
[TestFixture]
public class BackgroundWorkerTest
{
ManualResetEvent m;
bool runworkercalled;
SynchronizationContext old_context;
[TestFixtureSetUp]
public void FixtureSetup ()
{
old_context = AsyncOperationManager.SynchronizationContext;
AsyncOperationManager.SynchronizationContext = new SynchronizationContext ();
}
[TestFixtureTearDown]
public void TestFixtureTearDown ()
{
AsyncOperationManager.SynchronizationContext = old_context;
}
[SetUp]
public void Setup ()
{
m = new ManualResetEvent (false);
runworkercalled = false;
}
[Test]
[ExpectedException (typeof (InvalidOperationException))]
public void ReportProgressNoReportingSupported ()
{
BackgroundWorker b = new BackgroundWorker ();
Assert.IsFalse (b.IsBusy, "#1");
b.ReportProgress (0);
}
[Test]
public void ReportProgressNonBusy ()
{
BackgroundWorker b = new BackgroundWorker ();
b.WorkerReportsProgress = true;
Assert.IsFalse (b.IsBusy, "#1");
b.ReportProgress (0);
}
[Test]
[ExpectedException (typeof (InvalidOperationException))]
public void CancelAsyncNoCancellationSupported ()
{
BackgroundWorker b = new BackgroundWorker ();
Assert.IsFalse (b.IsBusy, "#1");
b.CancelAsync ();
}
[Test]
public void CancelAsyncNonBusy ()
{
BackgroundWorker b = new BackgroundWorker ();
b.WorkerSupportsCancellation = true;
Assert.IsFalse (b.IsBusy, "#1");
b.CancelAsync ();
}
[Test]
public void CancelBackgroundWorker ()
{
BackgroundWorker bw = new BackgroundWorker ();
bw.WorkerSupportsCancellation = true;
bw.DoWork += new DoWorkEventHandler (bw_DoWork);
bw.RunWorkerCompleted += new RunWorkerCompletedEventHandler (bw_RunWorkerCompleted);
runworkercalled = false;
bw.RunWorkerAsync ("cancel");
// We don't want to hang forever if the test fails.
Assert.AreEqual (true, m.WaitOne (10000, false), "A");
Assert.AreEqual (true, runworkercalled, "B");
Assert.AreEqual (false, bw.IsBusy, "C");
}
void bw_RunWorkerCompleted (object sender, RunWorkerCompletedEventArgs e)
{
runworkercalled = true;
Assert.AreEqual (true, e.Cancelled, "A1");
try {
object o = e.Result;
Assert.Fail ("There should be an IOE for cancelling the operation");
}
catch (InvalidOperationException)
{ }
Assert.IsNull (e.Error, "A3");
m.Set ();
}
[Test]
public void ExceptionBackgroundWorker ()
{
BackgroundWorker bw = new BackgroundWorker ();
bw.WorkerSupportsCancellation = true;
bw.DoWork += new DoWorkEventHandler (bw_DoWork);
bw.RunWorkerCompleted += new RunWorkerCompletedEventHandler (bw_RunWorkerCompletedException);
runworkercalled = false;
bw.RunWorkerAsync ("exception");
// We don't want to hang forever if the test fails.
Assert.AreEqual (true, m.WaitOne (10000, false), "A");
Assert.AreEqual (true, runworkercalled, "B");
Assert.AreEqual (false, bw.IsBusy, "C");
}
void bw_RunWorkerCompletedException (object sender, RunWorkerCompletedEventArgs e)
{
runworkercalled = true;
Assert.AreEqual (false, e.Cancelled, "A1");
try
{
object o = e.Result;
Assert.Fail ("There should be an TargetInvocationException");
}
catch (TargetInvocationException)
{ }
Assert.IsNotNull (e.Error, "A3");
m.Set ();
}
[Test]
public void CompleteBackgroundWorker ()
{
BackgroundWorker bw = new BackgroundWorker ();
bw.WorkerSupportsCancellation = true;
bw.DoWork += new DoWorkEventHandler (bw_DoWork);
bw.RunWorkerCompleted += new RunWorkerCompletedEventHandler (bw_RunWorkerCompletedSuccess);
runworkercalled = false;
bw.RunWorkerAsync ();
// We don't want to hang forever if the test fails.
Assert.AreEqual (true, m.WaitOne (10000, false), "A");
Assert.AreEqual (true, runworkercalled, "B");
Assert.AreEqual (false, bw.IsBusy, "C");
}
void bw_RunWorkerCompletedSuccess (object sender, RunWorkerCompletedEventArgs e)
{
runworkercalled = true;
Assert.AreEqual (false, e.Cancelled, "A1");
Assert.AreEqual ("B", e.Result, "A2");
Assert.IsNull (e.Error, "A3");
m.Set ();
}
void bw_DoWork (object sender, DoWorkEventArgs e)
{
if ((string)e.Argument == "cancel") {
e.Cancel = true;
e.Result = "A";
} else if ((string)e.Argument == "exception") {
throw new ApplicationException ("Whoops!");
} else
e.Result = "B";
}
}
}
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