public void CanEnumerateSafely()
{
var strings = LangTestHelpers.RandomStrings(1000, 50);
var results = new ConcurrentQueue <string>();
using (var stringsEnumerator = strings.GetEnumerator())
{
var tse = new ThreadSafeEnumerator <string>(stringsEnumerator);
var threads = new List <Thread>();
for (int i = 0; i < 10; i++)
{
var thread = new Thread(() =>
{
string it = null;
while (tse.TryGetNext(ref it))
{
results.Enqueue(it);
}
});
thread.Start();
threads.Add(thread);
}
foreach (var thread in threads)
{
thread.Join();
}
}
CollectionAssert.AreEquivalent(strings, results);
}
public void ForEachIteratesItemsInParallel()
{
var strings = LangTestHelpers.RandomStrings(100, 50);
var results = new ConcurrentQueue <Tuple <int, string> >();
var threadCount = 10;
Parallel.ForEach(
threadCount,
CancellationToken.None,
strings,
it =>
{
Thread.Sleep(10);
results.Enqueue(Tuple.Create(Environment.CurrentManagedThreadId, it));
}
);
Assert.AreEqual(threadCount, results.Select(it => it.Item1).Distinct().Count());
CollectionAssert.AreEquivalent(strings, results.Select(it => it.Item2));
}