BugFix - ShouldHandleNotification sends to the router, no output is expected, so don't wait for output.

Author: Martin Lercher

test/JsonRpc.Tests/InputHandlerTests.cs

@@ -158,7 +158,7 @@ public void ShouldHandleNotification()
                 incomingRequestRouter,
                 Substitute.For<IResponseRouter>(),
                 cts => {
-                    outputHandler.When(x => x.Send(Arg.Any<object>()))
+                    incomingRequestRouter.When(x => x.RouteNotification(Arg.Any<JsonRpc.Server.Notification>()))
                         .Do(x => {
                             cts.Cancel();
                         });