require "test_helper" class ActionCable::Server::WithIndependentConfig < ActionCable::Server::Base # ActionCable::Server::Base defines config as a class variable. # Need config to be an instance variable here as we're testing 2 separate configs def config @config ||= ActionCable::Server::Configuration.new end end module ChannelPrefixTest def test_channel_prefix server2 = ActionCable::Server::WithIndependentConfig.new server2.config.cable = alt_cable_config server2.config.logger = Logger.new(StringIO.new).tap { |l| l.level = Logger::UNKNOWN } adapter_klass = server2.config.pubsub_adapter rx_adapter2 = adapter_klass.new(server2) tx_adapter2 = adapter_klass.new(server2) subscribe_as_queue("channel") do |queue| subscribe_as_queue("channel", rx_adapter2) do |queue2| @tx_adapter.broadcast("channel", "hello world") tx_adapter2.broadcast("channel", "hello world 2") assert_equal "hello world", queue.pop assert_equal "hello world 2", queue2.pop end end end def alt_cable_config cable_config.merge(channel_prefix: "foo") end end