public void MajorityWithFailureTask()
{
var timeMachine = new TimeMachine();
// Second task gives a different result
var task1 = timeMachine.AddSuccessTask(1, "x");
var task2 = timeMachine.AddFaultingTask <string>(2, new Exception("Bang!"));
var task3 = timeMachine.AddSuccessTask(3, "x");
var resultTask = MoreTaskEx.WhenMajority(task1, task2, task3);
Assert.IsFalse(resultTask.IsCompleted);
// Only one result so far - no consensus
timeMachine.AdvanceTo(1);
Assert.IsFalse(resultTask.IsCompleted);
// Second result is a failure
timeMachine.AdvanceTo(2);
Assert.IsFalse(resultTask.IsCompleted);
// Third result gives majority verdict
timeMachine.AdvanceTo(3);
Assert.AreEqual(TaskStatus.RanToCompletion, resultTask.Status);
Assert.AreEqual("x", resultTask.Result);
}
public void EarlyFailure()
{
var timeMachine = new TimeMachine();
// Second task gives a different result
var task1 = timeMachine.AddCancelTask <string>(1);
var task2 = timeMachine.AddFaultingTask <string>(2, new Exception("Bang 2!"));
var task3 = timeMachine.AddSuccessTask(3, "x");
var resultTask = MoreTaskEx.WhenMajority(task1, task2, task3);
Assert.IsFalse(resultTask.IsCompleted);
// First result is a cancellation
timeMachine.AdvanceTo(1);
Assert.IsFalse(resultTask.IsCompleted);
// Second result is a failure. We now can't have a successful majority
timeMachine.AdvanceTo(2);
Assert.AreEqual(TaskStatus.Faulted, resultTask.Status);
}
