1 files changed, 67 insertions, 0 deletions
diff --git a/Rx/NET/Source/Tests.System.Reactive/Stress/Core/Schedulers/EventLoop.cs b/Rx/NET/Source/Tests.System.Reactive/Stress/Core/Schedulers/EventLoop.cs
new file mode 100644
index 0000000..41245a1
--- /dev/null
+++ b/Rx/NET/Source/Tests.System.Reactive/Stress/Core/Schedulers/EventLoop.cs
@@ -0,0 +1,67 @@
+// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
+
+#if STRESS
+using System;
+using System.Linq;
+using System.Reactive.Concurrency;
+using System.Reactive.Disposables;
+using System.Reactive.Linq;
+using System.Reflection;
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace ReactiveTests.Stress.Schedulers
+{
+    /// <summary>
+    /// Test for <see href="https://rx.codeplex.com/workitem/37">work item #37</see>.
+    /// </summary>
+    public static class EventLoop
+    {
+        private static readonly FieldInfo semaphore = typeof(EventLoopScheduler).GetField("_evt", BindingFlags.NonPublic | BindingFlags.Instance);
+
+        public static void NoSemaphoreFullException()
+        {
+            var failed = new TaskCompletionSource<int>();
+
+            using (var scheduler = new EventLoopScheduler())
+            {
+                Assert.AreEqual(0, scheduler.CurrentCount());
+
+                var maxCount = Environment.ProcessorCount;
+
+                using (Enumerable.Range(1, maxCount)
+                    .Select(_ => scheduler.SchedulePeriodic(TimeSpan.Zero, () =>
+                    {
+                        var count = scheduler.CurrentCount();
+
+                        if (count > maxCount)
+                            failed.SetResult(count);
+                    }))
+                    .Aggregate(
+                        new CompositeDisposable(),
+                        (c, d) =>
+                        {
+                            c.Add(d);
+                            return c;
+                        }))
+                {
+                    if (failed.Task.Wait(TimeSpan.FromSeconds(10)))
+                    {
+                        Assert.Fail("Semaphore count is too high: {0}", failed.Task.Result);
+                    }
+                }
+            }
+        }
+
+        private static int CurrentCount(this EventLoopScheduler scheduler)
+        {
+#if !NO_CDS
+            return ((SemaphoreSlim)semaphore.GetValue(scheduler)).CurrentCount;
+#else
+            return 0;
+#endif
+        }
+    }
+}
+#endif
+\ No newline at end of file