func waiter(c *gc.C, m dependency.Manifold, w worker.Worker) gate.Waiter {
var waiter gate.Waiter
err := m.Output(w, &waiter)
c.Assert(err, jc.ErrorIsNil)
c.Assert(waiter, gc.NotNil)
return waiter
}
func unlocker(c *gc.C, m dependency.Manifold, w worker.Worker) gate.Unlocker {
var unlocker gate.Unlocker
err := m.Output(w, &unlocker)
c.Assert(err, jc.ErrorIsNil)
c.Assert(unlocker, gc.NotNil)
return unlocker
}
func assertGate(c *gc.C, manifold dependency.Manifold, unlocker gate.Unlocker) {
w, err := manifold.Start(nil)
c.Assert(err, jc.ErrorIsNil)
defer worker.Stop(w)
var waiter gate.Waiter
err = manifold.Output(w, &waiter)
c.Assert(err, jc.ErrorIsNil)
select {
case <-waiter.Unlocked():
c.Fatalf("expected gate to be locked")
default:
}
unlocker.Unlock()
select {
case <-waiter.Unlocked():
default:
c.Fatalf("expected gate to be unlocked")
}
}