public void SimplePushBeforeTriggerIncluded()
{
var valueStack = new Stack <int>();
var errorStack = new Stack <Exception>();
bool isComplete = false;
var obs1 = new PushSubject <int>();
var output = obs1.TakeUntil(i => i == 0, true);
output.Subscribe(valueStack.Push, () => isComplete = true, errorStack.Push);
obs1.PushValue(1);
Assert.AreEqual(1, valueStack.Peek(), "the input value should be issued");
var ex = new Exception();
obs1.PushException(ex);
Assert.IsTrue(Object.ReferenceEquals(ex, errorStack.Peek()), "the exception should be issued");
obs1.PushValue(0);
Assert.AreEqual(0, valueStack.Peek(), "the input value should be issued");
obs1.PushValue(3);
Assert.AreEqual(2, valueStack.Count, "the ouput stream should not issue any other value");
ex = new Exception();
obs1.PushException(ex);
Assert.AreEqual(1, errorStack.Count, "the exception should not be issued");
obs1.Complete();
Assert.IsTrue(isComplete, "the output stream should be competed");
}