swh_scheduler = <swh.scheduler.backend.SchedulerBackend object at 0x7f0665cdb9b0> def test_types(swh_scheduler) -> None: """Checks all methods of SchedulerInterface are implemented by this backend, and that they have the same signature.""" # Create an instance of the protocol (which cannot be instantiated # directly, so this creates a subclass, then instantiates it) interface = type("_", (SchedulerInterface,), {})() missing_methods = [] for meth_name in dir(interface): if meth_name.startswith("_"): continue interface_meth = getattr(interface, meth_name) try: concrete_meth = getattr(swh_scheduler, meth_name) except AttributeError: missing_methods.append(meth_name) continue expected_signature = inspect.signature(interface_meth) actual_signature = inspect.signature(concrete_meth) > assert expected_signature == actual_signature, meth_name E AssertionError: grab_ready_priority_tasks E assert <Signature (t...-> List[Dict]> == <Signature (t...Type] = None)> E +<Signature (task_type: str, timestamp: Union[datetime.datetime, NoneType] = None, num_tasks: Union[int, NoneType] = None) -> List[Dict]> E -<Signature (task_type: str, timestamp: Union[datetime.datetime, NoneType] = None, num_tasks: Union[int, NoneType] = None)> .tox/py3/lib/python3.7/site-packages/swh/scheduler/tests/test_init.py:69: AssertionError