testing subclass of ServicesWebTestCase needs an opensource library, how to include this in testsuite?

Hey guys,

I'm writing tests for the amfserver project (AmfServerTestCase extends ServicesWebTestCase. To do this, I need a non actionscript based client to make AMF calls from php.
SabreAMF is such a library that provides a php AMF client, so I need this for my testing the amfserver.
Now, I can get test results and I have put the sabreamf library in sites/all/libraries.
But I would like to make my tests (which are included in the module), run without having users need to download the sabreamf thing first.

Is there a way to do this and can you please explain?
Can I make this a requirement, so you can at least run the tests but will get a message saying you need the sabre amf library etc.

see attached screenshots.

cheers