func (s *HookQueueSuite) TestAliveHookQueue(c *gc.C) {
for i, t := range aliveHookQueueTests {
c.Logf("test %d: %s", i, t.summary)
out := make(chan hook.Info)
in := make(chan params.RelationUnitsChange)
ruw := &RUW{in, false}
q := relation.NewAliveHookQueue(t.initial, out, ruw)
for i, step := range t.steps {
c.Logf(" step %d", i)
step.check(c, in, out)
}
expect{}.check(c, in, out)
q.Stop()
c.Assert(ruw.stopped, gc.Equals, true)
}
}
// StartHooks starts watching the relation, and sending hook.Info events on the
// hooks channel. It will panic if called when already responding to relation
// changes.
func (r *Relationer) StartHooks() error {
if r.IsImplicit() {
return nil
}
if r.queue != nil {
panic("hooks already started!")
}
if r.dying {
r.queue = relation.NewDyingHookQueue(r.dir.State(), r.hooks)
} else {
w, err := r.ru.Watch()
if err != nil {
return err
}
r.queue = relation.NewAliveHookQueue(r.dir.State(), r.hooks, w)
}
return nil
}