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()
