func (s *FilterSuite) TestServiceDeath(c *gc.C) {
f, err := newFilter(s.uniter, s.unit.Tag())
c.Assert(err, gc.IsNil)
defer statetesting.AssertStop(c, f)
dyingAsserter := coretesting.NotifyAsserterC{
C: c,
Precond: func() { s.BackingState.StartSync() },
Chan: f.UnitDying(),
}
dyingAsserter.AssertNoReceive()
err = s.unit.SetStatus(params.StatusStarted, "", nil)
c.Assert(err, gc.IsNil)
err = s.wordpress.Destroy()
c.Assert(err, gc.IsNil)
timeout := time.After(coretesting.LongWait)
loop:
for {
select {
case <-f.UnitDying():
break loop
case <-time.After(coretesting.ShortWait):
s.BackingState.StartSync()
case <-timeout:
c.Fatalf("dead not detected")
}
}
err = s.unit.Refresh()
c.Assert(err, gc.IsNil)
c.Assert(s.unit.Life(), gc.Equals, state.Dying)
// Can't set s.wordpress to Dead while it still has units.
}
// Ensure we get a signal on f.Dead()
func (s *FilterSuite) assertFilterDies(c *gc.C, f *filter) {
asserter := coretesting.NotifyAsserterC{
Precond: func() { s.BackingState.StartSync() },
C: c,
Chan: f.Dead(),
}
asserter.AssertClosed()
}
func (s *FilterSuite) TestUnitDeath(c *gc.C) {
f, err := newFilter(s.uniter, s.unit.Tag())
c.Assert(err, gc.IsNil)
defer f.Stop() // no AssertStop, we test for an error below
asserter := coretesting.NotifyAsserterC{
Precond: func() { s.BackingState.StartSync() },
C: c,
Chan: f.UnitDying(),
}
asserter.AssertNoReceive()
// Irrelevant change.
err = s.unit.SetResolved(state.ResolvedRetryHooks)
c.Assert(err, gc.IsNil)
asserter.AssertNoReceive()
// Set dying.
err = s.unit.SetStatus(params.StatusStarted, "", nil)
c.Assert(err, gc.IsNil)
err = s.unit.Destroy()
c.Assert(err, gc.IsNil)
asserter.AssertClosed()
// Another irrelevant change.
err = s.unit.ClearResolved()
c.Assert(err, gc.IsNil)
asserter.AssertClosed()
// Set dead.
err = s.unit.EnsureDead()
c.Assert(err, gc.IsNil)
s.assertAgentTerminates(c, f)
}