def test_call_state_refuse_during_call():
received_events = set()
def listener(event, call_state):
received_events.add(call_state.get_current_state())
c = CallState()
c.add_listener(listener)
assert c.is_disconnected
# disconnected -> ringing
c.permit()
assert c.is_ringing
assert 'ringing' in received_events
# ringing -> connected
c.answer()
assert c.is_connected
assert 'connected' in received_events
received_events = set()
# connected -> refusing
c.refuse()
assert c.is_refusing
assert 'refusing' in received_events
assert c.is_refusing
assert 'connected' not in received_events
# refusing -> disconnected
c.hangup()
assert c.is_disconnected
assert 'disconnected' in received_events
def test_call_state_refuse():
received_events = set()
def listener(event, call_state):
received_events.add(call_state.get_current_state())
c = CallState()
c.add_listener(listener)
assert c.is_disconnected
# disconnected -> refusing
c.refuse()
assert c.is_refusing
assert 'refusing' in received_events
try:
# refusing -> connected is not possible
c.answer()
raise AssertionError('can not trannsition from refusing to connected')
except:
pass
assert c.is_refusing
assert 'connected' not in received_events
# refusing -> disconnected
c.hangup()
assert c.is_disconnected
assert 'disconnected' in received_events
