static void TestSequenceOrder(YieldingDispatcher dispatcher, ISubject <int> sub, IObservable <int> obs)
{
IList <int> result = null;
obs.SelectMany(i => Observable.FromAsync(() => dispatcher.InvokeAsync(
() =>
{
Thread.Sleep(100);
return(i);
})))
.Buffer(2)
.Subscribe(
l =>
{
result = l;
});
sub.OnNext(1);
dispatcher.FlushNoneBlocking(); // This is the key here, we start processing item '1' before we add item '2'
sub.OnNext(2);
while (result == null)
{
dispatcher.Flush();
Thread.Sleep(1);
}
Assert.True(result.Count == 2, "Unexpected number of items in observable sequence. Was expecting 2");
Assert.True(result[0] == 1, "Unexpected observable sequence order. Was expecting 1");
Assert.True(result[1] == 2, "Unexpected observable sequence order. Was expecting 2");
}
public static void TestYieldNormalSequence()
{
var ctSource = new CancellationTokenSource();
var dispatcher = new YieldingDispatcher(ctSource.Token);
var sub = new Subject <int>();
var obs = sub.ObserveOn(dispatcher);
TestSequenceOrder(dispatcher, sub, obs);
ctSource.Cancel();
}
