Exemplo n.º 1
0
func (s *HookSenderSuite) TestHandlesUpdatesEmptyQueueSpam(c *gc.C) {
	source := hooktesting.NewEmptySource()
	defer statetesting.AssertStop(c, source)

	out := make(chan hook.Info)
	sender := hook.NewSender(out, source)
	defer statetesting.AssertStop(c, sender)

	// Spam all channels continuously for a bit.
	timeout := time.After(coretesting.LongWait)
	changeCount := 0
	updateCount := 0
	for i := 0; i < 100; i++ {
		select {
		case hi, ok := <-out:
			c.Fatalf("got unexpected hook: %#v %#v", hi, ok)
		case source.ChangesC <- source.NewChange("sent"):
			changeCount++
		case update, ok := <-source.UpdatesC:
			c.Assert(ok, jc.IsTrue)
			c.Assert(update, gc.Equals, "sent")
			updateCount++
		case <-timeout:
			c.Fatalf("not enough things happened in time")
		}
	}

	// Check sane end state.
	c.Check(changeCount, gc.Equals, 50)
	c.Check(updateCount, gc.Equals, 50)
}
Exemplo n.º 2
0
func (s *PeekerSuite) TestUpdatesEmptyQueueSpam(c *gc.C) {
	source := hooktesting.NewEmptySource()
	defer statetesting.AssertStop(c, source)

	peeker := hook.NewPeeker(source)
	defer statetesting.AssertStop(c, peeker)

	// Spam all channels continuously for a bit.
	timeout := time.After(coretesting.LongWait)
	changeCount := 0
	updateCount := 0
	for i := 0; i < 100; i++ {
		select {
		case peek, ok := <-peeker.Peeks():
			c.Fatalf("got unexpected peek: %#v %#v", peek, ok)
		case source.ChangesC <- source.NewChange("!"):
			changeCount++
		case update, ok := <-source.UpdatesC:
			c.Assert(ok, jc.IsTrue)
			c.Assert(update, gc.Equals, "!")
			updateCount++
		case <-timeout:
			c.Fatalf("not enough things happened in time")
		}
	}

	// Check sane end state.
	c.Check(changeCount, gc.Equals, 50)
	c.Check(updateCount, gc.Equals, 50)
}
Exemplo n.º 3
0
func (s *HookSenderSuite) TestHandlesUpdatesEmptyQueue(c *gc.C) {
	source := hooktesting.NewEmptySource()
	defer statetesting.AssertStop(c, source)

	out := make(chan hook.Info)
	sender := hook.NewSender(out, source)
	defer statetesting.AssertStop(c, sender)

	// Check no hooks are sent and no updates delivered.
	assertIdle := func() {
		select {
		case hi, ok := <-out:
			c.Fatalf("got unexpected hook: %#v %#v", hi, ok)
		case update, ok := <-source.UpdatesC:
			c.Fatalf("got unexpected update: %#v %#v", update, ok)
		case <-time.After(coretesting.ShortWait):
		}
	}
	assertIdle()

	// Send an event on the Changes() chan.
	timeout := time.After(coretesting.LongWait)
	select {
	case source.ChangesC <- source.NewChange("sent"):
	case <-timeout:
		c.Fatalf("timed out")
	}

	// Now that a change has been delivered, nothing should be sent on the out
	// chan, or read from the changes chan, until the Update method has completed.
	select {
	case source.ChangesC <- source.NewChange("notSent"):
		c.Fatalf("sent extra update while updating queue")
	case hi, ok := <-out:
		c.Fatalf("got unexpected hook while updating queue: %#v %#v", hi, ok)
	case got, ok := <-source.UpdatesC:
		c.Assert(ok, jc.IsTrue)
		c.Assert(got, gc.Equals, "sent")
	case <-timeout:
		c.Fatalf("timed out")
	}

	// Now the change has been delivered, nothing should be happening.
	assertIdle()
}