rails/actioncable/test/channel/broadcasting_test.rb
Vladimir Dementyev dc80459a9e
Move channel_name to Channel.broadcasting_for
That would allow us to test broadcasting made with channel, e.g.:

```ruby
class ChatRelayJob < ApplicationJob
  def perform_later(room, msg)
    ChatChannel.broadcast_to room, message: msg
  end
end
```

To test this functionality we need to know the underlying stream name
(to use `assert_broadcasts`), which relies on `channel_name`.

We had to use the following code:

```ruby
assert_broadcasts(ChatChannel.broadcasting_for([ChatChannel.channel_name, room]), 1) do
  ChatRelayJob.perform_now
end
```

The problem with this approach is that we use _internal_ API (we shouldn't care about `channel_name` prefix
in our code).

With this commit we could re-write the test as following:

```ruby
 assert_broadcasts(ChatChannel.broadcasting_for(room), 1) do
   ChatRelayJob.perform_now
 end
```
2019-01-22 15:14:20 -05:00

49 lines
1.1 KiB
Ruby

# frozen_string_literal: true
require "test_helper"
require "stubs/test_connection"
require "stubs/room"
class ActionCable::Channel::BroadcastingTest < ActionCable::TestCase
class ChatChannel < ActionCable::Channel::Base
end
setup do
@connection = TestConnection.new
end
test "broadcasts_to" do
assert_called_with(
ActionCable.server,
:broadcast,
[
"action_cable:channel:broadcasting_test:chat:Room#1-Campfire",
"Hello World"
]
) do
ChatChannel.broadcast_to(Room.new(1), "Hello World")
end
end
test "broadcasting_for with an object" do
assert_equal(
"action_cable:channel:broadcasting_test:chat:Room#1-Campfire",
ChatChannel.broadcasting_for(Room.new(1))
)
end
test "broadcasting_for with an array" do
assert_equal(
"action_cable:channel:broadcasting_test:chat:Room#1-Campfire:Room#2-Campfire",
ChatChannel.broadcasting_for([ Room.new(1), Room.new(2) ])
)
end
test "broadcasting_for with a string" do
assert_equal(
"action_cable:channel:broadcasting_test:chat:hello",
ChatChannel.broadcasting_for("hello")
)
end
end