public void UnscheduleFromRunLoopTest()
{
string path = Path.Combine(dirPath, "TempFileToWatch.txt");
var taskCompletionSource = new TaskCompletionSource <FSEventStreamEventsArgs> ();
FSEventStreamEventsArgs args = null;
TestRuntime.RunAsync(TimeSpan.FromSeconds(30), async() => {
fsEventStream.Events += (sender, eventArgs) => {
taskCompletionSource.SetResult(eventArgs);
watchedFileChanged = true;
};
fsEventStream.ScheduleWithRunLoop(CFRunLoop.Current); // need to schedule first before calling unschedule
fsEventStream.UnscheduleFromRunLoop(CFRunLoop.Current); // unscheduling from the RunLoop shouldn't trigger events
fsEventStreamStarted = fsEventStream.Start();
File.AppendAllText(path, "Hello World!");
Assert.IsTrue(File.Exists(path));
args = await taskCompletionSource.Task.ConfigureAwait(false);
}, () => watchedFileChanged);
Assert.IsNull(args, "Null args");
}