def test_subscribe():
""" Testing .subscribe() and .unsubscibe() of Publisher. """
s1 = Value()
s2 = Value()
publisher = Publisher()
assert len(publisher.subscriptions) == 0
# subscribe first subscriber
d1 = publisher.subscribe(s1)
assert any(s1 is s for s in publisher.subscriptions)
assert not any(s2 is s for s in publisher.subscriptions)
assert len(publisher.subscriptions) == 1
# re - subscribe should fail
with pytest.raises(SubscriptionError):
publisher.subscribe(s1)
# subscribe second subscriber
d2 = publisher.subscribe(s2)
assert len(publisher.subscriptions) == 2
assert any(s1 is s for s in publisher.subscriptions)
assert any(s2 is s for s in publisher.subscriptions)
# unsubscribe both subscribers
d2.dispose()
assert len(publisher.subscriptions) == 1
publisher.unsubscribe(s1)
assert len(publisher.subscriptions) == 0
# re - unsubscribing should fail
with pytest.raises(SubscriptionError):
d1.dispose()
with pytest.raises(SubscriptionError):
publisher.unsubscribe(s1)
with pytest.raises(SubscriptionError):
d2.dispose()
def unsubscribe(self, subscriber: Subscriber) -> None:
Publisher.unsubscribe(self, subscriber)
if not self._subscriptions and self._call_later_handler:
self._call_later_handler.cancel()
self._call_later_handler = None
def unsubscribe(self, subscriber: Subscriber) -> None:
Publisher.unsubscribe(self, subscriber)
if not self._subscriptions:
self._publisher.unsubscribe(self._emit_sink)
def unsubscribe(self, subscriber: Subscriber) -> None:
Publisher.unsubscribe(self, subscriber)
if not self._subscriptions:
for publisher in self._orginators:
publisher.unsubscribe(self)
Publisher.reset_state(self)
def unsubscribe(self, subscriber: Subscriber) -> None:
Publisher.unsubscribe(self, subscriber)
if not self._subscriptions and self._originator is not None:
self._originator.unsubscribe(self)
Publisher.reset_state(self)
def unsubscribe(self, subscriber: Subscriber) -> None:
Publisher.unsubscribe(self, subscriber)
if not self._subscriptions and self._subject is not None:
self._subject.unsubscribe(self)
