def test_hold_timer_expired_event_advances_to_idle_and_sends_notification(self):
reset_timer_if_running(self.state_machine.timers["hold"], self.tick - 3600)
with self.assertRaises(IdleError) as context:
self.state_machine.event(EventTimerExpired(), self.tick)
self.assertEqual(self.state_machine.state, "idle")
self.assertEqual(self.state_machine.output_messages.qsize(), 1)
message = self.state_machine.output_messages.get()
self.assertEqual(message.error_code, 4) # Hold Timer Expired
def test_timer_expired_event_does_nothing(self):
self.tick += 3600
self.state_machine.event(EventTimerExpired(), self.tick)
self.assertEqual(self.state_machine.state, "active")
self.assertFalse(self.state_machine.timers["hold"].expired(self.tick))
self.assertFalse(self.state_machine.timers["keepalive"].expired(self.tick))
self.assertEqual(self.state_machine.output_messages.qsize(), 0)
self.assertEqual(self.state_machine.route_updates.qsize(), 0)
def test_keepalive_timer_expired_event_sends_keepalive_and_resets_keepalive_timer(self):
reset_timer_if_running(self.state_machine.timers["keepalive"], self.tick - 3600)
self.state_machine.event(EventTimerExpired(), self.tick)
self.assertEqual(self.state_machine.state, "established")
self.assertEqual(self.state_machine.output_messages.qsize(), 1)
message = self.state_machine.output_messages.get()
self.assertTrue(isinstance(message, BgpKeepaliveMessage))
self.assertTrue(self.state_machine.timers["keepalive"].running())
self.assertFalse(self.state_machine.timers["keepalive"].expired(self.tick))
def test_keepalive_timer_expired_event_does_nothing(self):
reset_timer_if_running(self.state_machine.timers["keepalive"], self.tick - 3600)
self.state_machine.event(EventTimerExpired(), self.tick)
self.assertEqual(self.state_machine.state, "open_sent")
self.assertEqual(self.state_machine.output_messages.qsize(), 0)
self.assertEqual(self.state_machine.route_updates.qsize(), 0)