public void Do_not_return_new_task_until_previous_completed()
{
var queue = new QueuedExecutor(_queuedExecutorSettings, NullPersister.Instance);
queue.TaskAdded += delegate { };
var task1 = new LongRunningTask(false);
var task2 = new LongRunningTask(false);
queue.Enqueue(new ExecutionEnvelope(task1, DefaultReleaser.Instance));
queue.Enqueue(new ExecutionEnvelope(task2, DefaultReleaser.Instance));
queue.Dequeue();
Assert.That(queue.Dequeue(), Is.Null);
}
public void Returns_enqueued_task_if_added()
{
int dequeed = int.MinValue;
var queue = new QueuedExecutor(_queuedExecutorSettings, NullPersister.Instance);
queue.TaskAdded += delegate { };
var expected = new ExecutionEnvelope(new LongRunningTask(false), DefaultReleaser.Instance);
queue.Enqueue(expected);
var task = queue.Dequeue();
Assert.That(task, Is.SameAs(expected));
}
public void When_task_completed_allow_to_take_next_task()
{
var queue = new QueuedExecutor(_queuedExecutorSettings, NullPersister.Instance);
queue.TaskAdded += delegate { };
var task1 = new LongRunningTask(false);
var task2 = new LongRunningTask(false);
var envelope1 = new ExecutionEnvelope(task1, DefaultReleaser.Instance);
queue.Enqueue(envelope1);
var envelope2 = new ExecutionEnvelope(task2, DefaultReleaser.Instance);
queue.Enqueue(envelope2);
var extracted = queue.Dequeue();
extracted.ExecuteTask();
Assert.That(queue.Dequeue(), Is.SameAs(envelope2));
}
public void Returns_null_if_no_tasks_added()
{
int? dequeued = null;
var queue = new QueuedExecutor(_queuedExecutorSettings, NullPersister.Instance);
//queue.TaskCountChanged += x => dequeued = x;
var task = queue.Dequeue();
Assert.That(task, Is.Null);
Assert.That(dequeued, Is.Null); //Means not called at all
}
