1 files changed, 25 insertions, 0 deletions
diff --git a/Rx.NET/Tests.System.Reactive/NullErrorObservable.cs b/Rx.NET/Tests.System.Reactive/NullErrorObservable.cs
new file mode 100644
index 0000000..401d636
--- /dev/null
+++ b/Rx.NET/Tests.System.Reactive/NullErrorObservable.cs
@@ -0,0 +1,25 @@
+// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
+
+using System.Reactive.Disposables;
+using System;
+
+namespace ReactiveTests
+{
+    public class NullErrorObservable<T> : IObservable<T>
+    {
+        public static NullErrorObservable<T> Instance = new NullErrorObservable<T>();
+
+        private NullErrorObservable()
+        {
+        }
+
+        public IDisposable Subscribe(IObserver<T> observer)
+        {
+            if (observer == null)
+                throw new ArgumentNullException("observer");
+
+            observer.OnError(null);
+            return Disposable.Empty;
+        }
+    }
+}