public static void ParallelAdder(IProducerConsumerCollection <int> collection, int numThread)
{
int startIndex = -10;
ParallelTestHelper.ParallelStressTest(collection, delegate(IProducerConsumerCollection <int> c) {
int start = Interlocked.Add(ref startIndex, 10);
for (int i = start; i < start + 10; i++)
{
c.TryAdd(i);
}
}, numThread);
}
public void CountTestCase()
{
const int numThread = 5;
ParallelTestHelper.ParallelAdder(queue, numThread);
Assert.AreEqual(10 * numThread, queue.Count, "#1");
int value;
queue.TryPeek(out value);
ParallelTestHelper.ParallelRemover(queue, numThread, 3);
Assert.AreEqual(10 * numThread - 3, queue.Count, "#2");
}
public void ParallelForTestCase()
{
ParallelTestHelper.Repeat(() => {
int[] expected = Enumerable.Range(1, 1000).Select((e) => e * 2).ToArray();
int[] actual = Enumerable.Range(1, 1000).ToArray();
SpinWait sw = new SpinWait();
Parallel.For(0, actual.Length, (i) => { actual[i] *= 2; sw.SpinOnce(); });
CollectionAssert.AreEquivalent(expected, actual, "#1, same pixels");
CollectionAssert.AreEqual(expected, actual, "#2, pixels in order");
});
}
public static void ParallelRemover(IProducerConsumerCollection <int> collection, int numThread, int times)
{
int t = -1;
ParallelTestHelper.ParallelStressTest(collection, delegate(IProducerConsumerCollection <int> c) {
int num = Interlocked.Increment(ref t);
int value;
if (num < times)
{
c.TryTake(out value);
}
}, numThread);
}
public void ParallelForEachTestCase()
{
ParallelTestHelper.Repeat(() => {
IEnumerable <int> e = Enumerable.Repeat(1, 500);
ConcurrentQueue <int> queue = new ConcurrentQueue <int> ();
SpinWait sw = new SpinWait();
int count = 0;
Parallel.ForEach(e, (element) => { Interlocked.Increment(ref count); queue.Enqueue(element); sw.SpinOnce(); });
Assert.AreEqual(500, count, "#1");
CollectionAssert.AreEquivalent(e, queue, "#2");
});
}
public static void RemoveStressTest(IProducerConsumerCollection <int> coll, CheckOrderingType order)
{
ParallelTestHelper.Repeat(delegate {
const int count = 10;
const int threads = 5;
const int delta = 5;
for (int i = 0; i < (count + delta) * threads; i++)
{
coll.TryAdd(i);
}
bool state = true;
ParallelTestHelper.ParallelStressTest(coll, (q) => {
int t;
for (int i = 0; i < count; i++)
{
state &= coll.TryTake(out t);
}
}, threads);
Assert.IsTrue(state, "#1");
Assert.AreEqual(delta * threads, coll.Count, "#2");
string actual = string.Empty;
int temp;
while (coll.TryTake(out temp))
{
actual += temp.ToString();;
}
IEnumerable <int> range = Enumerable.Range(order == CheckOrderingType.Reversed ? 0 : count * threads, delta * threads);
if (order == CheckOrderingType.Reversed)
{
range = range.Reverse();
}
string expected = range.Aggregate(string.Empty, (acc, v) => acc + v);
if (order == CheckOrderingType.DontCare)
{
CollectionAssert.AreEquivalent(expected, actual, "#3");
}
else
{
Assert.AreEqual(expected, actual, "#3");
}
});
}
public void ContinueWithOnCompletedSuccessfullyTestCase()
{
ParallelTestHelper.Repeat(delegate {
bool result = false;
Task t = Task.Factory.StartNew(delegate { });
Task cont = t.ContinueWith(delegate { result = true; }, TaskContinuationOptions.OnlyOnRanToCompletion);
t.Wait();
cont.Wait();
Assert.IsNull(cont.Exception, "#1");
Assert.IsNotNull(cont, "#2");
Assert.IsTrue(result, "#3");
});
}
public void CountTestCase()
{
const int numThread = 5;
ParallelTestHelper.ParallelAdder(stack, numThread);
Assert.AreEqual(10 * numThread, stack.Count, "#1");
int value;
stack.TryPeek(out value);
ParallelTestHelper.ParallelRemover(stack, numThread, 3);
Assert.AreEqual(10 * numThread - 3, stack.Count, "#2");
stack.Clear();
Assert.AreEqual(0, stack.Count, "#3");
Assert.IsTrue(stack.IsEmpty, "#4");
}
public void WaitStressTest()
{
int count = -1;
bool[] array = new bool[7];
ParallelTestHelper.ParallelStressTest(sem, delegate(SemaphoreSlim s) {
int index = Interlocked.Increment(ref count);
s.Wait();
Thread.Sleep(40);
s.Release();
array[index] = true;
}, 7);
bool result = array.Aggregate((acc, e) => acc && e);
Assert.IsTrue(result, "#1");
Assert.AreEqual(5, sem.CurrentCount, "#2");
}
public void AddCountSignalStressTestCase()
{
int count = 0;
ParallelTestHelper.ParallelStressTest(evt, delegate(CountdownEvent e) {
int num = Interlocked.Increment(ref count);
if (num % 2 == 0)
{
e.AddCount();
}
else
{
e.Signal();
}
}, 7);
Assert.AreEqual(4, evt.CurrentCount, "#1");
Assert.IsFalse(evt.IsSet, "#2");
}
public void StressNonZeroTest()
{
ParallelTestHelper.Repeat(delegate {
ParallelTestHelper.ParallelStressTest(snzi, (s) => {
snzi.Increment();
for (int i = 0; i < 1; i++)
{
if (i % 2 == 0)
{
snzi.Increment();
}
else
{
snzi.Decrement();
}
}
});
Assert.IsFalse(snzi.IsSet, "#1");
});
}
public void CancelTestCase()
{
int count = 1;
ParallelTestHelper.Repeat(delegate {
bool result = false;
Task t = new Task(delegate {
result = true;
});
t.Cancel();
Assert.IsTrue(t.IsCancellationRequested, "#-1");
t.Start();
t.Wait();
Assert.IsInstanceOfType(typeof(TaskCanceledException), t.Exception, "#1 : " + count++);
TaskCanceledException ex = (TaskCanceledException)t.Exception;
Assert.AreEqual(t, ex.Task, "#2");
Assert.IsFalse(result, "#3");
});
}
public void RemoveParallelTest()
{
ParallelTestHelper.Repeat(delegate {
Setup();
int index = 0;
bool r1 = false, r2 = false, r3 = false;
int val;
ParallelTestHelper.ParallelStressTest(map, delegate {
int own = Interlocked.Increment(ref index);
switch (own)
{
case 1:
r1 = map.TryRemove("foo", out val);
break;
case 2:
r2 = map.TryRemove("bar", out val);
break;
case 3:
r3 = map.TryRemove("foobar", out val);
break;
}
}, 3);
Assert.AreEqual(0, map.Count);
int value;
Assert.IsTrue(r1, "1");
Assert.IsTrue(r2, "2");
Assert.IsTrue(r3, "3");
Assert.IsFalse(map.TryGetValue("foo", out value), "#1");
Assert.IsFalse(map.TryGetValue("bar", out value), "#2");
Assert.IsFalse(map.TryGetValue("foobar", out value), "#3");
});
}
public void MultipleTaskTestCase()
{
ParallelTestHelper.Repeat(delegate {
bool r1 = false, r2 = false, r3 = false;
Task t1 = Task.Factory.StartNew(delegate {
r1 = true;
});
Task t2 = Task.Factory.StartNew(delegate {
r2 = true;
});
Task t3 = Task.Factory.StartNew(delegate {
r3 = true;
});
t1.Wait();
t2.Wait();
t3.Wait();
Assert.IsTrue(r1, "#1");
Assert.IsTrue(r2, "#2");
Assert.IsTrue(r3, "#3");
});
}
public void ContinueWithOnAbortedTestCase()
{
ParallelTestHelper.Repeat(delegate {
bool result = false;
bool taskResult = false;
Task t = new Task(delegate { taskResult = true; });
t.Cancel();
Task cont = t.ContinueWith(delegate { result = true; }, TaskContinuationOptions.OnlyOnCanceled);
t.Start();
t.Wait();
cont.Wait();
Assert.IsFalse(taskResult, "#-1");
Assert.AreEqual(TaskStatus.Canceled, t.Status, "#0");
Assert.IsTrue(t.IsCanceled, "#0bis");
Assert.IsNull(cont.Exception, "#1");
Assert.IsNotNull(cont, "#2");
Assert.IsTrue(result, "#3");
});
}
public void WaitTestCase()
{
int count = 0;
bool s = false;
ParallelTestHelper.ParallelStressTest(evt, delegate(CountdownEvent e) {
if (Interlocked.Increment(ref count) % 2 == 0)
{
Thread.Sleep(100);
while (!e.IsSet)
{
e.Signal();
}
}
else
{
e.Wait();
s = true;
}
});
Assert.IsTrue(s, "#1");
Assert.IsTrue(evt.IsSet, "#2");
}
