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

Now Rails 6 includes the action-cable-test gem

So there is no need to add a gem. You can do either

assert_has_stream "chat_1"

or, with rspec:

expect(subscription).to have_stream_from("chat_1")