You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: action_cable_subscriber.rb
    path of file: ./repos/newrelic-ruby-agent/test/new_relic/agent/instrumentation/rails
    
    the code of the file until where you have to start completion: # This file is distributed under New Relic's license terms.
# See https://github.com/newrelic/newrelic-ruby-agent/blob/main/LICENSE for complete details.
# frozen_string_literal: true

require_relative '../../../../../lib/new_relic/agent/instrumentation/rails_notifications/action_cable'

module NewRelic
  module A
    
        def test_actual_call_to_action_cable
          # TODO: Remove when we no longer support Rails 5.0
          # error in rails 5.0
          # No more expects available for :config: []
          skip('this test is flakey in rails 5.0') if defined?(Rails::VERSION) &&
            Rails::VERSION::MAJOR == 5 &&
            Rails::VERSION::MINOR == 0

          config = MiniTest::Mock.new
          config.expect(:log_tags, {})

          logger = ::Logger.new('/dev/null')

          server = MiniTest::Mock.new
          server.expect(:worker_pool, 'dinosaur')
          server.expect(:config, config)
          server.expect(:logger, logger)
          server.expect(:event_loop, nil)

          env = {}
          connection = TestConnection.new(server, env)
          identifier = nil

          channel = TestChannel.new(connection, identifier)
          data = {'action' => 'do_it'}

          in_transaction do |txn|
            channel.perform_action(data)
          end

          metric_name = "Nested/Controller/ActionCable/#{TestChannel.name}/do_it"

          assert_metrics_recorded metric_name
          assert find_node_with_name(last_transaction_trace, metric_name)
          config.verify
          server.verify
        end