public void Should_notify_when_left_right_received()
{
var left = new Subject<int>();
var right = new Subject<int>();
var withLatest = left.WithLatest(right, (l, r) => l + r);
var received = new List<int>();
using (withLatest.Subscribe(i => received.Add(i)))
{
left.OnNext(1);
right.OnNext(1);
Assert.AreEqual(1, received.Count);
Assert.AreEqual(2, received[0]);
}
}