'L{LegacyLogObserverWrapper} is an L{ILogObserver}.'

def test_interface(self):

    legacyObserver = (lambda e: None)
    observer = LegacyLogObserverWrapper(legacyObserver)
    try:
        verifyObject(ILogObserver, observer)
    except BrokenMethodImplementation as e:
        self.fail(e)
