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// SemaphoreSlimTests.cs
//
// Copyright (c) 2008 Jérémie "Garuma" Laval
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
//
using System;
using System.Linq;
using System.Threading;
using MonoTests.System.Threading.Tasks;
using NUnit.Framework;
namespace MonoTests.System.Threading
{
[TestFixture]
public class SemaphoreSlimTests
{
SemaphoreSlim sem;
[SetUp]
public void Setup()
{
sem = new SemaphoreSlim(5);
}
[Test]
public void CurrentCountMaxTestCase()
{
using (var semMax = new SemaphoreSlim(5, 5)) {
semMax.Wait();
try {
semMax.Release(3);
Assert.Fail ();
} catch (SemaphoreFullException) {}
}
}
[Test]
public void CurrentCountTestCase()
{
sem.Wait();
sem.Wait();
sem.Release();
Assert.AreEqual(4, sem.CurrentCount);
}
[Test]
[Category ("MultiThreaded")]
public void WaitStressTest()
{
int count = -1;
bool[] array = new bool[7];
int worker = 0;
bool coherent = true;
ParallelTestHelper.ParallelStressTest (sem, delegate (SemaphoreSlim s) {
int index = Interlocked.Increment (ref count);
s.Wait ();
if (Interlocked.Increment (ref worker) > 5)
coherent = false;
Thread.Sleep (40);
Interlocked.Decrement (ref worker);
s.Release ();
array[index] = true;
}, 7);
bool result = array.Aggregate ((acc, e) => acc && e);
Assert.IsTrue (result, "#1");
Assert.AreEqual (5, sem.CurrentCount, "#2");
Assert.IsTrue (coherent, "#3");
}
}
}
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