Sequence Based FlexUnit integration testing

Did you know that sequence based testing is built into FlexUnit? I was relieved to find this link in the documentation (http://tutorials.digitalprimates.net/flexunit/Unit-13.html). If you go to that page, please scroll to the bottom section about "Using Sequences".

One of Twin's clients needed a real time update for currency exchange. Basically in our system, instead of a continuous feed, the business requirement was that every week the admin would enter the new exchange rates (there were only 5 that were relevant). Once saved, there was supposed to be a real time push notification to all open clients so that they could update their forecast data. 

Here is what my integration test needed to prove: 

• Get the current exchange rates from the service
• Save a new exchange rate
• Receive the push notification
• Validate that the new rates has been recorded into model under the correct date.

var rtmpManager:ExchangeRateRTMPManager = new ExchangeRateRTMPManager();
var sequence:SequenceRunner = new SequenceRunner(this);
    sequence.addStep(new SequenceCaller(eventDispatcher, getInitialExchanges, [weeks] ))
    sequence.addStep(new SequenceWaiter(eventDispatcher, INITIAL_RATES_EVENT,TIMEOUT, handleTimeout));
         
    sequence.addStep(new SequenceCaller(eventDispatcher, saveCurrency ,[er]))
    sequence.addStep(new SequenceWaiter(eventDispatcher, SAVE_CURRENCY_EVENT,TIMEOUT, handleTimeout));
  
    sequence.addStep(new SequenceDelay(15*1000)) //Delay 15 s to see if we can get a notification in that time
    sequence.addAssertHandler( validateRTMPManagerReceivedPushNotifcation, null);

    sequence.run();

Tests passed, and it worked beautifully!