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)
}
// 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()
}