Use anycable-rack-server in tests

.github/workflows/system_test.yml

@@ -52,7 +52,5 @@ jobs:
       - name: Run RSpec
         run: |
           bundle exec rails db:prepare
-          sudo bundle exec rails g anycable:download --bin-path=./bin
           bundle exec rails webpacker:compile
-          sudo cp ./bin/anycable-go /usr/local/bin/
           bundle exec rspec --tag type:system

Gemfile

@@ -37,5 +37,8 @@ group :test do
   gem 'selenium-webdriver'
   gem 'cuprite'
 
+  # Rack-based AnyCable server implementation
+  gem 'anycable-rack-server', '0.2.0.rc1'
+
   gem 'test-prof'
 end

Gemfile.lock

@@ -65,6 +65,11 @@ GEM
     anycable (1.0.0.rc2)
       anyway_config (>= 1.4.2)
       grpc (~> 1.17)
+    anycable-rack-server (0.2.0.rc1)
+      anycable
+      anyway_config (>= 1.4.2)
+      connection_pool (~> 2.2)
+      websocket (~> 1.2)
     anycable-rails (1.0.0.rc4)
       anycable (= 1.0.0.rc2)
       rails (>= 5)
@@ -90,6 +95,7 @@ GEM
       adamantium (~> 0.2.0)
       equalizer (~> 0.0.9)
     concurrent-ruby (1.1.6)
+    connection_pool (2.2.3)
     crass (1.0.6)
     cuprite (0.10)
       capybara (>= 2.1, < 4)
@@ -267,6 +273,7 @@ GEM
       activesupport (>= 4.2)
       rack-proxy (>= 0.6.1)
       railties (>= 4.2)
+    websocket (1.2.8)
     websocket-driver (0.7.2)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
@@ -278,6 +285,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  anycable-rack-server (= 0.2.0.rc1)
   anycable-rails (= 1.0.0.rc4)
   bootsnap (>= 1.4.2)
   capybara

config/anycable.yml

@@ -31,6 +31,7 @@ development:
 
 test:
   <<: *default
+  http_broadcast_url: "http://localhost:3023/_anycable_rack_broadcast"
 
 production:
   <<: *default

config/environments/test.rb

@@ -8,13 +8,15 @@
 Rails.application.configure do
   # Enforce AnyCable patches to make it possible to use any_cable adapter for system tests
   require "anycable/rails/actioncable/connection"
+  # TEMP: Remove me after final anycable 1.0.0 release
+  require "anycable/rack/version"
 
   # Specify AnyCable WebSocket server URL to use by JS client
-  config.after_initialize do
-    config.action_cable.url = ActionCable.server.config.url = ENV.fetch("CABLE_URL", "ws://127.0.0.1:8080/cable")
-  end
-
+  config.action_cable.url = "/rack_cable"
+  # Disable built-in Action Cable
   config.action_cable.mount_path = nil
+  # Run AnyCable Rack server at a custom path
+  config.any_cable_rack.mount_path = "/rack_cable"
 
   # Settings specified here will take precedence over those in config/application.rb.
   config.cache_classes = true

spec/rails_helper.rb

@@ -4,6 +4,9 @@
 
 require "spec_helper"
 
+# Run embedded RPC server only in RSpec context (it would break when running migrations on CI otherwise)
+ENV["ANYCABLE_RUN_RPC"] = "true"
+
 begin
   require File.expand_path("../../config/environment", __FILE__)
 rescue => e

spec/system/support/anycable_setup.rb

@@ -7,13 +7,8 @@
   # Skip assets precompilcation if we exclude system specs.
   next if config.filter.opposite.rules[:type] == "system" || config.exclude_pattern.match?(%r{spec/system})
 
-  require "anycable/cli"
-
-  cli = AnyCable::CLI.new(embedded: true)
-  cli.run(["--server-command", "anycable-go --broadcast_adapter=http"])
-
   config.after(:suite) do
-    cli&.shutdown
+    AnyCable::Rack.rpc_server&.shutdown
   end
 
   config.before(:each, type: :system) do

spec/system/support/capybara_setup.rb

@@ -11,6 +11,9 @@
 # Where to store artifacts (e.g. screenshots, downloaded files, etc.)
 Capybara.save_path = ENV.fetch("CAPYBARA_ARTIFACTS", "./tmp/capybara")
 
+# Use fixed server port to configure AnyCable broadcast url
+Capybara.server_port = 3023
+
 Capybara.singleton_class.prepend(Module.new do
   attr_accessor :last_used_session