public void SimplePushValues()
{
var valueStack = new Stack <Tuple <int, int> >();
var errorStack = new Stack <Exception>();
bool isComplete = false;
var obs1 = new PushSubject <int>();
var obs2 = new PushSubject <int>();
var output = obs1.CombineWithLatest <int, int, Tuple <int, int> >(obs2, (v1, v2) => new Tuple <int, int>(v1, v2));
output.Subscribe(valueStack.Push, () => isComplete = true, errorStack.Push);
obs1.PushValue(1);
Assert.AreEqual(0, valueStack.Count, "no value should be in the output stream if not both value are sent into input streams");
obs1.PushValue(2);
Assert.AreEqual(0, valueStack.Count, "no value should be in the output stream if not both value are sent into input streams");
obs2.PushValue(3);
var outValue = valueStack.Peek();
Assert.IsTrue(outValue.Item1 == 2 && outValue.Item2 == 3, "the ouput value should contains the 2 last submitted values in both streams");
obs2.PushValue(4);
outValue = valueStack.Peek();
Assert.IsTrue(outValue.Item1 == 2 && outValue.Item2 == 4, "the ouput value should contains the 2 last submitted values in both streams");
obs1.PushValue(5);
outValue = valueStack.Peek();
Assert.IsTrue(outValue.Item1 == 5 && outValue.Item2 == 4, "the ouput value should contains the 2 last submitted values in both streams");
obs2.Complete();
Assert.IsFalse(isComplete, "the output stream shouldn't complete as long as both input streams are not complete");
obs1.PushValue(6);
outValue = valueStack.Peek();
Assert.IsTrue(outValue.Item1 == 6 && outValue.Item2 == 4, "the ouput value should contains the 2 last submitted values in both streams");
obs1.Complete();
Assert.IsTrue(isComplete, "the output stream should be completed");
}
