def test_channel_management(use_dedicated_thread_mode=True): bus = MessageBus() initial_channel_count = len(bus.channels) # root channel, internal # log channel, etc. test_channels = {} bus.start() # The bus has already been started by __init__, but # this extra call should do no damage! if use_dedicated_thread_mode: bus.turn_on_dedicated_thread_mode() attempt_to_create_existing_channel(bus, 'root') assert bus.root_channel == bus.get_channel('root') def addchan(name, parent): get_nonexistent_channel(bus, name) test_channels[name] = chan = bus.create_new_channel(name) assert chan == bus.get_channel(name) assert chan.parent_channel == parent assert chan in parent.child_channels assert chan.name == name return chan for i in xrange(5): topname = 'top%i'%i topchan = addchan(topname, bus.root_channel) for j in xrange(5): subname = '%s.subchan%i'%(topname, j) subchan = addchan(subname, topchan) assert len(topchan.child_channels) == j+1 assert '.'.join(subchan.name.split('.')[:-1])==topchan.name for k in xrange(5): subsubchan = addchan('%s.subsubchan%i'%(subname, k), subchan) assert len(subchan.child_channels) == k+1 assert '.'.join(subsubchan.name.split('.')[:-1])==subchan.name assert len(bus.channels) == (len(test_channels)+initial_channel_count) assert len(bus.channels) == len(bus.get_open_channel_names()) chanX = bus.create_new_channel('X') attempt_to_create_existing_channel(bus, 'X') assert chanX.parent_channel == bus.root_channel assert bus.get_channel('X') == chanX assert bus.create_new_channel('x') != chanX chanY = bus.create_new_channel('X.Y') assert chanY.parent_channel == chanX assert chanX.name in bus.channels assert chanY.name in bus.channels bus.stop()
def test_full_message_queue(): bus = MessageBus(max_queue_size=1) bus.turn_on_dedicated_thread_mode() chan = bus.root_channel subscriber = CollectingSubscriber() chan.subscribe(subscriber, async=True) for i in range(6): chan.send(i) slow_subscriber = SlowSubscriber() chan.subscribe(slow_subscriber, async=True) for i in range(6): # will block till the slow subscriber has finished handling # the previous one chan.send(i) bus.stop()