IMailboxQueue GetMailboxQueue(MailboxQueueKind kind)
{
switch (kind)
{
case MailboxQueueKind.Bounded: return(new BoundedMailboxQueue(4));
case MailboxQueueKind.Unbounded: return(new UnboundedMailboxQueue());
}
throw new ArgumentOutOfRangeException(nameof(kind));
}
private IMailboxQueue GetMailboxQueue(MailboxQueueKind kind)
{
switch (kind)
{
case MailboxQueueKind.Bounded: return(new BoundedMailboxQueue(4));
case MailboxQueueKind.Unbounded: return(new UnboundedMailboxQueue());
default:
throw new ArgumentOutOfRangeException(nameof(kind), kind, null);
}
}
public void Given_MailboxQueue_when_enqueue_and_dequeue_in_different_threads_Then_we_get_the_elements_in_the_FIFO_order(MailboxQueueKind kind)
{
const int msgCount = 1000;
var cancelSource = new CancellationTokenSource();
var sut = GetMailboxQueue(kind);
var producer = new Thread(_ =>
{
for (int i = 0; i < msgCount; i++)
{
if (cancelSource.IsCancellationRequested)
{
return;
}
sut.Push(i);
}
});
var consumerList = new List <int>();
var consumer = new Thread(l =>
{
var list = (List <int>)l;
for (var i = 0; i < msgCount; i++)
{
var popped = sut.Pop();
while (popped == null)
{
if (cancelSource.IsCancellationRequested)
{
return;
}
Thread.Sleep(1);
popped = sut.Pop();
}
list.Add((int)popped);
}
});
producer.Start(); consumer.Start(consumerList);
producer.Join(1000); consumer.Join(1000);
cancelSource.Cancel();
Assert.Equal(msgCount, consumerList.Count);
for (var i = 0; i < msgCount; i++)
{
Assert.Equal(i, consumerList[i]);
}
}
public void Given_MailboxQueue_When_push_pop_Then_HasMessages_relate_the_queue_status(MailboxQueueKind kind)
{
var sut = GetMailboxQueue(kind);
Assert.False(sut.HasMessages);
sut.Push(1);
Assert.True(sut.HasMessages);
sut.Push(2);
Assert.True(sut.HasMessages);
Assert.Equal(1, sut.Pop());
Assert.True(sut.HasMessages);
Assert.Equal(2, sut.Pop());
Assert.False(sut.HasMessages);
}
private IMailboxQueue GetMailboxQueue(MailboxQueueKind kind)
=> kind switch
{
