From fa914157b0187c98996b7513ed009081867c4cef Mon Sep 17 00:00:00 2001
From: Tom de Bruijn <tom@tomdebruijn.com>
Date: Wed, 10 Jul 2024 09:03:44 +0200
Subject: [PATCH] Test Action Cable action in Rails app

Make sure we add a scenario that actually triggers an Action Cable
action so that we can test if it's instrumented.
---
 ruby/rails7-sidekiq/app/Gemfile.lock                      | 2 +-
 ruby/rails7-sidekiq/app/app/channels/chat_room_channel.rb | 8 ++++++++
 .../app/app/javascript/channels/chat_room_channel.js      | 3 +++
 3 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/ruby/rails7-sidekiq/app/Gemfile.lock b/ruby/rails7-sidekiq/app/Gemfile.lock
index 12b97aa2..8e9763ef 100644
--- a/ruby/rails7-sidekiq/app/Gemfile.lock
+++ b/ruby/rails7-sidekiq/app/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: /integration
   specs:
-    appsignal (3.9.1)
+    appsignal (3.10.0)
       rack
 
 GEM
diff --git a/ruby/rails7-sidekiq/app/app/channels/chat_room_channel.rb b/ruby/rails7-sidekiq/app/app/channels/chat_room_channel.rb
index e716bbd0..93f27244 100644
--- a/ruby/rails7-sidekiq/app/app/channels/chat_room_channel.rb
+++ b/ruby/rails7-sidekiq/app/app/channels/chat_room_channel.rb
@@ -17,4 +17,12 @@ def echo(data)
     data.delete("action")
     transmit data
   end
+
+  def add_connected_message
+    message = ChatMessage.new(
+      :body => "You're connected to the chat room!",
+      :created_at => Time.zone.now,
+    )
+    transmit message
+  end
 end
diff --git a/ruby/rails7-sidekiq/app/app/javascript/channels/chat_room_channel.js b/ruby/rails7-sidekiq/app/app/javascript/channels/chat_room_channel.js
index 98336999..79851777 100644
--- a/ruby/rails7-sidekiq/app/app/javascript/channels/chat_room_channel.js
+++ b/ruby/rails7-sidekiq/app/app/javascript/channels/chat_room_channel.js
@@ -8,6 +8,9 @@ if (chatRoomId) {
   consumer.subscriptions.create({ channel: "ChatRoomChannel", chat_room_id: chatRoomId }, {
     connected() {
       console.log(`Subscribed to ${chatRoomId}`)
+      // You would do this from the channel itself, but this triggers an action
+      // in the Channel so that we can test if instrument the action.
+      this.perform("add_connected_message")
     },
 
     disconnected() {