public void SwitchEarlySCatchFirst()
{
List <int> output = new List <int>();
ValueTuple <Stream <int>, StreamSink <int>, StreamSink <int>, CellSink <Stream <int> >, IListener> t = Transaction.Run(() =>
{
StreamSink <int> c1 = Stream.CreateSink <int>();
StreamSink <int> c2 = Stream.CreateSink <int>();
CellSink <Stream <int> > s = Cell.CreateSink(c1.AsStream());
Stream <int> c = s.SwitchEarlyS();
c1.Send(2);
c2.Send(12);
s.Send(c2);
IListener l = c.Listen(output.Add);
return(ValueTuple.Create(c, c1, c2, s, l));
});
t.Item2.Send(3);
t.Item3.Send(13);
Transaction.RunVoid(() =>
{
t.Item2.Send(4);
t.Item3.Send(14);
t.Item4.Send(t.Item2);
});
t.Item2.Send(5);
t.Item3.Send(15);
t.Item5.Unlisten();
CollectionAssert.AreEqual(new[] { 12, 13, 4, 5 }, output);
}