def test_subscribe(self):
ebc = EventBusClient()
sub = ebc.subscribe('news', lambda msg, topic: None)
self.assertEqual(len(ebc.list_subscribers()), 1)
self.assertEqual(len(ebc.list_subscribers('news')), 1)
self.assertEqual(len(ebc.list_subscribers('other')), 0)
def test_unsubscribe(self):
ebc = EventBusClient(EventBus())
sub = ebc.subscribe('news', lambda msg, topic: None)
ebc.unsubscribe(sub)
self.assertEqual(ebc.list_subscribers(), [])
self.assertEqual(ebc.list_subscribers('news'), [])
def test_wildcard_topic(self):
ebc = EventBusClient(EventBus())
subs = []
wildcard_sub = Mock()
subs.append(ebc.subscribe(re.compile(r'.*'), wildcard_sub))
prefix_sub = Mock()
subs.append(ebc.subscribe(re.compile(r'ham.*'), prefix_sub))
contains_sub = Mock()
subs.append(ebc.subscribe(re.compile(r'.*burg.*'), contains_sub))
ebc.publish('news', 1)
ebc.publish('hamsters', 2)
ebc.publish('hamburgers', 3)
ebc.publish('nonsense', 4)
c = call
self.assertEqual(wildcard_sub.call_count, 4)
wildcard_sub.assert_has_calls([
c('news', 1),
c('hamsters', 2),
c('hamburgers', 3),
c('nonsense', 4)])
self.assertEqual(prefix_sub.call_count, 2)
prefix_sub.assert_has_calls([
c('hamsters', 2),
c('hamburgers', 3)])
self.assertEqual(contains_sub.call_count, 1)
contains_sub.assert_has_calls([c('hamburgers', 3)])
for sub in subs:
ebc.unsubscribe(sub)
self.assertEqual(ebc.list_subscribers(), [])