There should be a test_main method otherwise this won't work when called from regrtest.  

Have you tried to run this with regrtest -R :: ?  I think it will work, but just wanted to be sure.

One thing that might be nice to add to this test is to verify the change in the length of the callLst since assertLastCallWas() was called.  Typically there should be only one method call from what I saw in the test.  However, if we screw something up and there are two method calls, this test could catch that.  It would be an enhancement (ie new feature) over the existing test.