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//
// ConcurrentBagTests.cs
//
// Author:
// Jérémie "Garuma" Laval <jeremie.laval@gmail.com>
//
// Copyright (c) 2009 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.
#if NET_4_0
using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Concurrent;
using System.Threading;
using System.Linq;
using NUnit;
using NUnit.Framework;
using NUnit.Framework.Constraints;
namespace MonoTests.System.Collections.Concurrent
{
[TestFixture]
public class ConcurrentBagTests
{
ConcurrentBag<int> bag;
[SetUp]
public void Setup ()
{
bag = new ConcurrentBag<int> ();
}
[Test]
public void BasicAddTakeTest ()
{
bag.Add (1);
Assert.IsFalse (bag.IsEmpty);
Assert.AreEqual (1, bag.Count);
var array = bag.ToArray ();
Assert.AreEqual (1, array.Length);
Assert.AreEqual (1, array[0]);
int result;
Assert.IsTrue (bag.TryTake (out result));
Assert.AreEqual (1, result);
Assert.IsTrue (bag.IsEmpty);
}
[Test]
public void BasicAddTakeFromOtherThread ()
{
var t = new Thread (() => bag.Add (1));
t.Start ();
Assert.IsTrue (t.Join (300));
Assert.IsFalse (bag.IsEmpty);
Assert.AreEqual (1, bag.Count);
var array = bag.ToArray ();
Assert.AreEqual (1, array.Length);
Assert.AreEqual (1, array[0]);
int result;
Assert.IsTrue (bag.TryTake (out result));
Assert.AreEqual (1, result);
Assert.IsTrue (bag.IsEmpty);
}
[Test]
public void AddFromMultipleThreadTakeFromOneThread ()
{
var threads = new Thread[10];
for (int i = 0; i < threads.Length; i++) {
threads[i] = new Thread (() => bag.Add (1));
threads[i].Start ();
}
foreach (var t in threads)
Assert.IsTrue (t.Join (2000));
Assert.IsFalse (bag.IsEmpty);
Assert.AreEqual (threads.Length, bag.Count);
var array = bag.ToArray ();
Assert.AreEqual (threads.Length, array.Length);
Assert.That (array, new CollectionEquivalentConstraint (Enumerable.Repeat (1, 10).ToArray ()), "#1, same");
int result;
for (int i = 0; i < threads.Length; i++) {
Assert.IsTrue (bag.TryTake (out result));
Assert.AreEqual (1, result);
}
Assert.IsTrue (bag.IsEmpty);
}
[Test]
public void AddFromOneThreadTakeFromMultiple ()
{
var threads = new Thread[10];
for (int i = 0; i < threads.Length; i++)
bag.Add (1);
Assert.IsFalse (bag.IsEmpty);
Assert.AreEqual (threads.Length, bag.Count);
bool valid = true;
for (int i = 0; i < threads.Length; i++) {
int result;
threads[i] = new Thread (() => valid &= bag.TryTake (out result) && result == 1);
threads[i].Start ();
}
foreach (var t in threads)
Assert.IsTrue (t.Join (200));
Assert.IsTrue (valid, "Aggregate test");
}
[Test]
public void BasicAddPeekTest ()
{
bag.Add (1);
Assert.IsFalse (bag.IsEmpty);
Assert.AreEqual (1, bag.Count);
int result;
Assert.IsTrue (bag.TryPeek (out result));
Assert.AreEqual (1, result);
Assert.IsFalse (bag.IsEmpty);
}
[Test]
public void BasicAddPeekFromOtherThread ()
{
var t = new Thread (() => bag.Add (1));
t.Start ();
Assert.IsTrue (t.Join (300));
Assert.IsFalse (bag.IsEmpty);
Assert.AreEqual (1, bag.Count);
int result;
Assert.IsTrue (bag.TryPeek (out result));
Assert.AreEqual (1, result);
Assert.IsFalse (bag.IsEmpty);
}
[Test]
public void AddFromOneThreadPeekFromMultiple ()
{
var threads = new Thread[10];
for (int i = 0; i < threads.Length; i++)
bag.Add (1);
Assert.IsFalse (bag.IsEmpty);
Assert.AreEqual (threads.Length, bag.Count);
bool valid = true;
for (int i = 0; i < threads.Length; i++) {
int result;
threads[i] = new Thread (() => valid &= bag.TryPeek (out result) && result == 1);
threads[i].Start ();
}
foreach (var t in threads)
Assert.IsTrue (t.Join (200));
Assert.IsTrue (valid, "Aggregate test");
}
[Test]
public void BasicRemoveEmptyTest ()
{
int result;
Assert.IsTrue(bag.IsEmpty);
Assert.IsFalse(bag.TryTake(out result));
}
[Test]
public void BasicRemoveTwiceTest()
{
bag.Add (1);
Assert.IsFalse (bag.IsEmpty);
Assert.AreEqual (1, bag.Count);
int result;
Assert.IsTrue (bag.TryTake (out result));
Assert.AreEqual (1, result);
Assert.IsTrue (bag.IsEmpty);
Assert.IsFalse (bag.TryTake (out result));
Assert.IsFalse (bag.TryTake (out result));
}
[Test]
public void AddRemoveAddTest()
{
bag.Add (1);
Assert.IsFalse (bag.IsEmpty);
Assert.AreEqual (1, bag.Count);
int result;
Assert.IsTrue (bag.TryTake (out result));
Assert.AreEqual (1, result);
Assert.IsTrue (bag.IsEmpty);
bag.Add (1);
Assert.IsFalse (bag.IsEmpty);
Assert.AreEqual (1, bag.Count);
Assert.IsTrue (bag.TryTake (out result));
Assert.AreEqual (1, result);
Assert.IsTrue (bag.IsEmpty);
}
[Test]
public void AddStressTest ()
{
CollectionStressTestHelper.AddStressTest (bag);
}
[Test]
public void RemoveStressTest ()
{
CollectionStressTestHelper.RemoveStressTest (bag, CheckOrderingType.DontCare);
}
}
}
#endif
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