def test_compile_and_getsource(self):

->     co = self.source.compile()

       exec co

       f(7)

       excinfo = py.test.raises(AssertionError, "f(6)")

       frame = excinfo.traceback[-1].frame 

       stmt = frame.code.fullsource.getstatement(frame.lineno)

       #print "block", str(block)

       assert str(stmt).strip().startswith('assert')