Files
duck-preview/tests/test_dispatcher.py

48 lines
944 B
Python

from duck_preview.dispatcher.frame_dispatcher import FrameDispatcher
def test_subscribe_notified():
dispatcher = FrameDispatcher()
received = []
def cb(frame):
received.append(frame)
dispatcher.subscribe(cb)
dispatcher.on_frame("test")
assert received == ["test"]
def test_unsubscribe_not_notified():
dispatcher = FrameDispatcher()
received = []
def cb(frame):
received.append(frame)
dispatcher.subscribe(cb)
dispatcher.unsubscribe(cb)
dispatcher.on_frame("test")
assert received == []
def test_multiple_subscribers():
dispatcher = FrameDispatcher()
received_1 = []
received_2 = []
def cb1(frame):
received_1.append(frame)
def cb2(frame):
received_2.append(frame)
dispatcher.subscribe(cb1)
dispatcher.subscribe(cb2)
dispatcher.on_frame("test")
assert received_1 == ["test"]
assert received_2 == ["test"]