Trigger subscription callback when there is a publish action about action-cable-testing

[flyfy1]

@palkan Sorry it has been a while since last time I was working on this issue 😂

I've changed the way I test things to bypass this issue now... would probably change it back later on (at that time, I'll re-open this issue)

[palkan]

I think, it's possible to add support for real broadcast in unit-tests:

• implement subscribe / unsubscribe for Test adapter
• enhance stream_from and stop_all_streams for ChannelStub to interact with pubsub.

I'm not sure when I'll have time to do that by myself. If you'd like to propose a PR, feel free to ask me for advice/help!

[palkan]

Hi @flyfy1!

Could you, please, provide an example of a channel and the corresponding test which involves streams callbacks?

Having a good example would help to figure our a better way to implement support for this.