How can I test ActionCable channels using RSpec?

Question

I am wondering how to test ActionCable channels.

Let\'s say I have the following chat channel:

class ChatChannel < ApplicationCable::Channel
  def s         


        

Answer 1

I would install and configure TCR gem for recording sockets interaction ('its like VCR for websockets')

A spec for this in your case might look something like this...

describe ChatChannel do
  context ".subscribed" do
    it "updates db and defines opens 2 streams for one channel" do
      TCR.use_cassette("subscribed_action") do |cassette|
        # ...
        ChatChannel.subscribed
        expect(cassette).to include "something ..."
      end
    end
  end
end