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 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 RemoveParallelTest()
{
ParallelTestHelper.Repeat(delegate
{
Setup();
var index = 0;
var r1 = false;
var r2 = false;
var r3 = false;
ParallelTestHelper.ParallelStressTest
(
_map,
delegate
{
var own = Interlocked.Increment(ref index);
switch (own)
{
case 1:
r1 = _map.TryRemove("foo", out _);
break;
case 2:
r2 = _map.TryRemove("bar", out _);
break;
case 3:
r3 = _map.TryRemove("foobar", out _);
break;
default:
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), "#1b " + value.ToString());
Assert.IsFalse(_map.TryGetValue("bar", out value), "#2b");
Assert.IsFalse(_map.TryGetValue("foobar", out value), "#3b");
});
}
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 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++)
{
while (!coll.TryAdd(i))
{
;
}
}
bool state = true;
bool ran = false;
Assert.AreEqual((count + delta) * threads, coll.Count, "#0");
ParallelTestHelper.ParallelStressTest(coll, (q) => {
ran = true;
bool s = true;
int t;
for (int i = 0; i < count; i++)
{
s &= coll.TryTake(out t);
// try again in case it was a transient failure
if (!s && coll.TryTake(out t))
{
s = true;
}
}
if (!s)
{
state = false;
}
}, threads);
Assert.IsTrue(ran, "#1-pre");
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");
}
}, 1000);
}
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 (var i = 0; i < (Count + Delta) * Threads; i++)
{
while (!coll.TryAdd(i))
{
}
}
var state = true;
Assert.AreEqual((Count + Delta) * Threads, coll.Count, "#0");
ParallelTestHelper.ParallelStressTest(coll, (q) =>
{
var s = true;
int t;
for (var i = 0; i < Count; i++)
{
s &= coll.TryTake(out t);
// try again in case it was a transient failure
if (!s && coll.TryTake(out t))
{
s = true;
}
}
state &= s;
}, Threads);
Assert.IsTrue(state, "#1");
Assert.AreEqual(Delta * Threads, coll.Count, "#2");
var actual = string.Empty;
int temp;
var builder = new StringBuilder();
builder.Append(actual);
while (coll.TryTake(out temp))
{
builder.Append(temp.ToString());
}
actual = builder.ToString();
var range = Enumerable.Range(order == CheckOrderingType.Reversed ? 0 : Count * Threads, Delta * Threads);
if (order == CheckOrderingType.Reversed)
{
range = range.Reverse();
}
var expected = range.Aggregate(string.Empty, (acc, v) => acc + v);
if (order == CheckOrderingType.DontCare)
{
Assert.That(actual, new CollectionEquivalentConstraint(expected), "#3");
}
else
{
Assert.AreEqual(expected, actual, "#3");
}
}, 10);
}
