func (s *PresenceSuite) TestExpiry(c *gc.C) {
w := presence.NewWatcher(s.presence)
p := presence.NewPinger(s.presence, "a")
defer w.Stop()
defer p.Stop()
ch := make(chan presence.Change)
w.Watch("a", ch)
assertChange(c, ch, presence.Change{"a", false})
c.Assert(p.Start(), gc.IsNil)
w.StartSync()
assertChange(c, ch, presence.Change{"a", true})
// Still alive in previous slot.
presence.FakeTimeSlot(1)
w.StartSync()
assertNoChange(c, ch)
// Two last slots are empty.
presence.FakeTimeSlot(2)
w.StartSync()
assertChange(c, ch, presence.Change{"a", false})
// Already dead so killing isn't noticed.
p.Kill()
w.StartSync()
assertNoChange(c, ch)
}
func (s *PresenceSuite) SetUpTest(c *gc.C) {
s.LoggingSuite.SetUpTest(c)
s.MgoSuite.SetUpTest(c)
db := s.MgoSuite.Session.DB("presence")
s.presence = db.C("presence")
s.pings = db.C("presence.pings")
presence.FakeTimeSlot(0)
}