public async Task GivenNonCompletedUserMessage_ShouldHaltProcessingUntilCompletion()
{
var mailboxHandler = new TestMailboxHandler();
var userMailbox = new UnboundedMailboxQueue();
var systemMessages = new UnboundedMailboxQueue();
var mailbox = new DefaultMailbox(systemMessages, userMailbox);
mailbox.RegisterHandlers(mailboxHandler, mailboxHandler);
var msg1 = new TestMessage();
var msg2 = new TestMessage();
mailbox.PostUserMessage(msg1);
mailbox.PostUserMessage(msg2);
Assert.True(userMailbox.HasMessages, "Mailbox should not have processed msg2 because processing of msg1 is not completed.");
Action resumeMailboxTrigger = () =>
{
// mailbox is waiting on msg1 to be completed before continuing
// setting msg2 first guarantees that both messages will be processed
msg2.TaskCompletionSource.SetResult(0);
msg1.TaskCompletionSource.SetResult(0);
};
await mailboxHandler.ResumeMailboxProcessingAndWaitAsync(resumeMailboxTrigger)
.ConfigureAwait(false);
Assert.False(userMailbox.HasMessages, "Mailbox should have processed msg2 because processing of msg1 is completed.");
}
public async Task GivenNonCompletedUserMessage_ShouldHaltProcessingUntilCompletion()
{
var mailboxHandler = new TestMailboxHandler();
var userMailbox = new UnboundedMailboxQueue();
var systemMessages = new UnboundedMailboxQueue();
var mailbox = new DefaultMailbox(systemMessages, userMailbox);
mailbox.RegisterHandlers(mailboxHandler, mailboxHandler);
var msg1 = new TestMessageWithTaskCompletionSource();
var msg2 = new TestMessageWithTaskCompletionSource();
mailbox.PostUserMessage(msg1);
mailbox.PostUserMessage(msg2);
await Task.Delay(1000);
Assert.True(userMailbox.HasMessages,
"Mailbox should not have processed msg2 because processing of msg1 is not completed."
);
msg2.TaskCompletionSource.SetResult(0);
msg1.TaskCompletionSource.SetResult(0);
await Task.Delay(1000);
Assert.False(userMailbox.HasMessages,
"Mailbox should have processed msg2 because processing of msg1 is completed."
);
}
public async Task GivenUserMessage_ShouldInvokeMessagePosted()
{
var msg1 = new TestMessageWithTaskCompletionSource();
_mailbox.PostUserMessage(msg1);
await Task.Delay(1000);
Assert.Contains(msg1, _mailboxStatistics.Posted);
}
public void GivenCompletedUserMessage_ShouldContinueProcessing()
{
var mailboxHandler = new TestMailboxHandler();
var userMailbox = new UnboundedMailboxQueue();
var systemMessages = new UnboundedMailboxQueue();
var mailbox = new DefaultMailbox(systemMessages, userMailbox);
mailbox.RegisterHandlers(mailboxHandler, mailboxHandler);
var msg1 = new TestMessage();
var msg2 = new TestMessage();
msg1.TaskCompletionSource.SetResult(0);
msg2.TaskCompletionSource.SetResult(0);
mailbox.PostUserMessage(msg1);
mailbox.PostUserMessage(msg2);
Assert.False(userMailbox.HasMessages, "Mailbox should have processed both messages because they were already completed.");
}
public void GivenUserMessage_ShouldInvokeMessagePosted()
{
var mailboxHandler = new TestMailboxHandler();
var userMailbox = new UnboundedMailboxQueue();
var systemMessages = new UnboundedMailboxQueue();
var mailboxStatistics = new TestMailboxStatistics();
var mailbox = new DefaultMailbox(systemMessages, userMailbox, mailboxStatistics);
mailbox.RegisterHandlers(mailboxHandler, mailboxHandler);
var msg1 = new TestMessage();
mailbox.PostUserMessage(msg1);
Assert.Contains(msg1, mailboxStatistics.Posted);
}
public void GivenCompletedUserMessage_ShouldInvokeMessageReceivedImmediately()
{
var mailboxHandler = new TestMailboxHandler();
var userMailbox = new UnboundedMailboxQueue();
var systemMessages = new UnboundedMailboxQueue();
var mailboxStatistics = new TestMailboxStatistics();
var mailbox = new DefaultMailbox(systemMessages, userMailbox, mailboxStatistics);
mailbox.RegisterHandlers(mailboxHandler, mailboxHandler);
var msg1 = new TestMessage();
msg1.TaskCompletionSource.SetResult(0);
mailbox.PostUserMessage(msg1);
Assert.Contains(msg1, mailboxStatistics.Posted);
}
public void GivenNonCompletedUserMessage_ShouldSetMailboxToIdleAfterCompletion()
{
var mailboxHandler = new TestMailboxHandler();
var userMailbox = new UnboundedMailboxQueue();
var systemMessages = new UnboundedMailboxQueue();
var mailbox = new DefaultMailbox(systemMessages, userMailbox);
mailbox.RegisterHandlers(mailboxHandler, mailboxHandler);
var msg1 = new TestMessage();
mailbox.PostUserMessage(msg1);
msg1.TaskCompletionSource.SetResult(0);
Thread.Sleep(500); // wait for mailbox to finish
Assert.True(mailbox.Status == MailboxStatus.Idle, "Mailbox should be set back to Idle after completion of message.");
}
public void GivenCompletedUserMessageThrewException_ShouldNotInvokeMessageReceived()
{
var mailboxHandler = new TestMailboxHandler();
var userMailbox = new UnboundedMailboxQueue();
var systemMessages = new UnboundedMailboxQueue();
var mailboxStatistics = new TestMailboxStatistics();
var mailbox = new DefaultMailbox(systemMessages, userMailbox, mailboxStatistics);
mailbox.RegisterHandlers(mailboxHandler, mailboxHandler);
var msg1 = new TestMessage();
msg1.TaskCompletionSource.SetException(new Exception());
mailbox.PostUserMessage(msg1);
Assert.DoesNotContain(msg1, mailboxStatistics.Received);
}
public async Task GivenNonCompletedUserMessage_ShouldSetMailboxToIdleAfterCompletion()
{
var mailboxHandler = new TestMailboxHandler();
var userMailbox = new UnboundedMailboxQueue();
var systemMessages = new UnboundedMailboxQueue();
var mailbox = new DefaultMailbox(systemMessages, userMailbox);
mailbox.RegisterHandlers(mailboxHandler, mailboxHandler);
var msg1 = new TestMessage();
mailbox.PostUserMessage(msg1);
Action resumeMailboxTrigger = () => msg1.TaskCompletionSource.SetResult(0);
await mailboxHandler.ResumeMailboxProcessingAndWaitAsync(resumeMailboxTrigger)
.ConfigureAwait(false);
Assert.True(mailbox.Status == MailboxStatus.Idle, "Mailbox should be set back to Idle after completion of message.");
}
public async Task GivenNonCompletedUserMessageThrewException_ShouldNotInvokeMessageReceived()
{
var mailboxHandler = new TestMailboxHandler();
var userMailbox = new UnboundedMailboxQueue();
var systemMessages = new UnboundedMailboxQueue();
var mailboxStatistics = new TestMailboxStatistics();
var mailbox = new DefaultMailbox(systemMessages, userMailbox, mailboxStatistics);
mailbox.RegisterHandlers(mailboxHandler, mailboxHandler);
var msg1 = new TestMessage();
mailbox.PostUserMessage(msg1);
Action resumeMailboxTrigger = () => msg1.TaskCompletionSource.SetException(new Exception());
await mailboxHandler.ResumeMailboxProcessingAndWaitAsync(resumeMailboxTrigger)
.ConfigureAwait(false);
Assert.DoesNotContain(msg1, mailboxStatistics.Received);
}
public void GivenCompletedUserMessageTaskThrewException_ShouldEscalateFailure()
{
var mailboxHandler = new TestMailboxHandler();
var userMailbox = new UnboundedMailboxQueue();
var systemMessages = new UnboundedMailboxQueue();
var mailbox = new DefaultMailbox(systemMessages, userMailbox);
mailbox.RegisterHandlers(mailboxHandler, mailboxHandler);
var msg1 = new TestMessage();
var taskException = new Exception();
msg1.TaskCompletionSource.SetException(taskException);
mailbox.PostUserMessage(msg1);
Assert.Equal(1, mailboxHandler.EscalatedFailures.Count);
var e = Assert.IsType <AggregateException>(mailboxHandler.EscalatedFailures[0]);
Assert.Equal(taskException, e.InnerException);
}
public async Task GivenNonCompletedUserMessage_ShouldSetMailboxToIdleAfterCompletion()
{
var mailboxHandler = new TestMailboxHandler();
var userMailbox = new UnboundedMailboxQueue();
var systemMessages = new UnboundedMailboxQueue();
var mailbox = new DefaultMailbox(systemMessages, userMailbox);
mailbox.RegisterHandlers(mailboxHandler, mailboxHandler);
var msg1 = new TestMessageWithTaskCompletionSource();
mailbox.PostUserMessage(msg1);
await Task.Delay(1000);
msg1.TaskCompletionSource.SetResult(0);
await Task.Delay(1000);
Assert.True(mailbox.Status == MailboxStatus.Idle,
"Mailbox should be set back to Idle after completion of message."
);
}