private void CancellationTestCase(WorkerThread wt, EventMonitor <WorkerThread> wtMon)
{
var q = wt.Queue;
var tasks = Enumerable.Range(0, 4).Select(i => new TestTask(i.ToString())).ToArray();
var taskMons = tasks.Select(t => new EventMonitor <TestTask>(t)).ToArray();
var cancelTask = tasks[1];
cancelTask.StateChanging += (s, e) =>
{
if (e.NewValue == TaskState.InProgress)
{
wt.Cancel();
}
};
foreach (var task in tasks)
{
q.Enqueue(task);
}
Assert.IsTrue(wt.WaitForDeath(timeout: 4000));
AssertState(wt, isDisposed: false, isAlive: false, busy: false);
Assert.AreEqual(TaskState.Succeeded, tasks[0].State);
Assert.AreEqual(TaskState.Canceled, tasks[1].State);
Assert.AreEqual(TaskState.Waiting, tasks[2].State);
Assert.AreEqual(TaskState.Waiting, tasks[3].State);
wtMon.History.AssertEventNames(
nameof(WorkerThread.BusyChanged),
nameof(WorkerThread.CurrentTaskChanged),
nameof(WorkerThread.TaskBegin),
nameof(WorkerThread.TaskEnd),
nameof(WorkerThread.CurrentTaskChanged),
nameof(WorkerThread.TaskBegin),
nameof(WorkerThread.Cancelled),
nameof(WorkerThread.TaskEnd),
nameof(WorkerThread.CurrentTaskChanged),
nameof(WorkerThread.BusyChanged),
nameof(WorkerThread.IsAliveChanged));
}