Org.flexunit.listeners.UIListener not found, and other problems

Question

I have a basic setup of FlexUnit that comes with the latest FlashBulider. I import a bunch of SWC's in my project and try to follow instructions from here:
http://docs.flexunit.org/index.php?title=Setting_up_a_FlexUnit_4_Project
I got an error saying defintion of UIListener could not be found.
Then I checked the AS docs here: http://docs.flexunit.org/asdocs/index.html
And found out there is no UIListener class at all
So I realized that core.addListener takes IRunListener, and change the code to this:
core.addListener(IRunListener(uiListener));
Sadly, when run. there was a runtime error with this line:
<flexui:TestRunnerBase id="uiListener" width="100%" height="100%" x="0" y="0" />
Saying TestRunnerBase does not implement the IRunListener intarface,

Answer 1

The UIListener is not in the core project, it is in the UIListener project, so unless you have that one as well, you will not have the UIListener.
My guess though is that it is a TestRunnerBase issue. TestRunnerBase isn't something we wrote for FlexUnit 4. It is an adaption of a FlexUnit 1 concept to give people a familiar environment as a default test runner. The goal is to eventually write a new one for FlexUnit 4 but our priorities were features and IDE integration.
All of that said, I am guessing the flexui namespace in your project is pointing to an older version of the TestRunnerBase buried somewhere in the FlexUnit .9 project. We include FlexUnit .9 in its entirety for compatibility reasons, but it means that you can sometimes reference older classes. The appropriate namespace should be:
http://www.adobe.com/2009/flexUnitUIRunner
If that doesn't work, then you are missing the FlexUnit4UIListener.swc and your namespace is probably set differently. Here is another thread on this same issue:
http://forums.adobe.com/message/2252570#2252570
When configured correctly, your MXML file should read something like this:
<?xml version="1.0" encoding="utf-8"?>
<mx:Application
xmlns:mx="http://www.adobe.com/2006/mxml"
creationComplete="runMe()" xmlns:adobe="http://www.adobe.com/2009/flexUnitUIRunner">
  <mx:Script>
      <![CDATA[
        import org.flexunit.listeners.UIListener;
        import compilationSuite.SuitesToRun;
        import org.flexunit.runner.FlexUnitCore;
        private var core:FlexUnitCore;
        public function runMe():void {
          core = new FlexUnitCore();
          core.addListener( uiListener );
          core.run( compilationSuite.SuitesToRun );
    ]]>
  </mx:Script>
  <adobe:TestRunnerBase id="uiListener" width="100%" height="100%"  />
</mx:Application>
I will give the wiki page you reference a read today and see if I can make things clearer,
Mike