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#region license
// Copyright (c) 2005 - 2007 Ayende Rahien (ayende@ayende.com)
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of Ayende Rahien nor the names of its
// contributors may be used to endorse or promote products derived from this
// software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#endregion
using System;
using System.Threading;
using Ayende.NHibernateQueryAnalyzer.Utilities;
using MbUnit.Framework;
namespace Ayende.NHibernateQueryAnalyzer.Tests.Utiltites
{
[TestFixture]
public class ThreadSafeQueueTests
{
private IQueue q;
private ManualResetEvent flag;
[SetUp]
public void Setup()
{
q = new ThreadSafeQueue();
flag = new ManualResetEvent(false);
}
[TearDown]
public void Teardown()
{
flag.Close();
}
[Test]
public void EnqueueShouldWork()
{
q.Enqueue(new object());
}
[Test]
public void DequeueAfterEnqueueShouldReturnTheSameObject()
{
object o = new object();
q.Enqueue(o);
Assert.AreSame(o, q.Dequeue());
}
#region DequeueOnAnEmptyQueueShouldSleep
[Test]
public void DequeueOnAnEmptyQueueShouldSleep()
{
Thread t = new Thread(new ThreadStart(DequeueFromEmptyQueue));
t.Start();
flag.WaitOne(); // let other thread run
Thread.Sleep(10);
Assert.AreEqual(ThreadState.WaitSleepJoin, t.ThreadState);
t.Abort(); // clean up
}
private void DequeueFromEmptyQueue()
{
flag.Set();
q.Dequeue();
}
#endregion
#region EnqueueShouldReleaseSleepingThread
[Test]
public void EnqueueShouldReleaseSleepingThread()
{
Thread t = new Thread(new ThreadStart(DequeueFromNonEmptyQueue));
t.Start();
flag.WaitOne(); // let other thread run
Thread.Sleep(10);
Assert.AreEqual(ThreadState.WaitSleepJoin, t.ThreadState);
flag.Reset();
q.Enqueue(1);
flag.WaitOne(); // let other thread finish
Thread.Sleep(10);
Assert.IsTrue(true);
}
private void DequeueFromNonEmptyQueue()
{
flag.Set();
object o = q.Dequeue();
flag.Set();
Assert.AreEqual(1, Convert.ToInt32(o));
}
#endregion
}
} |
