def METHOD_NAME(self):
    """
    L{WorkerLogObserver} forwards data to L{managercommands.TestWrite}.
    """
    calls = []
    class FakeClient:
        def callRemote(self, method, **kwargs):
            calls.append((method, kwargs))
    observer = WorkerLogObserver(FakeClient())
    observer.emit({"message": ["Some log"]})
    self.assertEqual(calls, [(managercommands.TestWrite, {"out": "Some log"})])