path: root/actioncable/test/test_helper.rb

require 'action_cable'
require 'active_support/testing/autorun'

require 'puma'

require 'mocha/setup'

require 'rack/mock'
require 'active_support/core_ext/hash/indifferent_access'

# Require all the stubs and models
Dir[File.dirname(__FILE__) + '/stubs/*.rb'].each {|file| require file }

if ENV['FAYE'].present?
  require 'faye/websocket'
  class << Faye::WebSocket
    remove_method :ensure_reactor_running

    # We don't want Faye to start the EM reactor in tests because it makes testing much harder.
    # We want to be able to start and stop EM loop in tests to make things simpler.
    def ensure_reactor_running
      # no-op
    end
  end
end

module EventMachineConcurrencyHelpers
  def wait_for_async
    EM.run_deferred_callbacks
  end

  def run_in_eventmachine
    failure = nil
    EM.run do
      begin
        yield
      rescue => ex
        failure = ex
      ensure
        wait_for_async
        EM.stop if EM.reactor_running?
      end
    end
    raise failure if failure
  end
end

module ConcurrentRubyConcurrencyHelpers
  def wait_for_async
    e = Concurrent.global_io_executor
    until e.completed_task_count == e.scheduled_task_count
      sleep 0.1
    end
  end

  def run_in_eventmachine
    yield
    wait_for_async
  end
end

class ActionCable::TestCase < ActiveSupport::TestCase
  if ENV['FAYE'].present?
    include EventMachineConcurrencyHelpers
  else
    include ConcurrentRubyConcurrencyHelpers
  end
end