ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	mux := newMux(nil)
	channelOne := mux.ChannelWithContext(ctx, "one")
	if channelOne != mux.ChannelWithContext(ctx, "one") {
		t.Error("Didn't get the same muxuration channel back with the same name")
	}
	channelTwo := mux.ChannelWithContext(ctx, "two")
	if channelOne == channelTwo {
		t.Error("Got back the same muxuration channel for different names")
	}
}

		merger:  merger,
	}
	return mux
}

// ChannelWithContext returns a channel where a configuration source
// can send updates of new configurations. Multiple calls with the same
// source will return the same channel. This allows change and state based sources
// to use the same channel. Different source names however will be treated as a
// union.
func (m *mux) ChannelWithContext(ctx context.Context, source string) chan interface{} {

// only accepts PodUpdates
func (c *PodConfig) Channel(ctx context.Context, source string) chan<- interface{} {
	c.sourcesLock.Lock()
	defer c.sourcesLock.Unlock()
	c.sources.Insert(source)
	return c.mux.ChannelWithContext(ctx, source)
}

// SeenAllSources returns true if seenSources contains all sources in the
// config, and also this config has received a SET message from each source.