require 'test_helper' require 'stubs/test_connection' require 'stubs/room' class ActionCable::Channel::BaseTest < ActiveSupport::TestCase class ActionCable::Channel::Base def kick @last_action = [ :kick ] end def topic end end class BasicChannel < ActionCable::Channel::Base def chatters @last_action = [ :chatters ] end end class ChatChannel < BasicChannel attr_reader :room, :last_action after_subscribe :toggle_subscribed after_unsubscribe :toggle_subscribed def initialize(*) @subscribed = false super end def subscribed @room = Room.new params[:id] @actions = [] end def unsubscribed @room = nil end def toggle_subscribed @subscribed = !@subscribed end def leave @last_action = [ :leave ] end def speak(data) @last_action = [ :speak, data ] end def topic(data) @last_action = [ :topic, data ] end def subscribed? @subscribed end def get_latest transmit data: 'latest' end def receive @last_action = [ :receive ] end private def rm_rf @last_action = [ :rm_rf ] end end setup do @user = User.new "lifo" @connection = TestConnection.new(@user) @channel = ChatChannel.new @connection, "{id: 1}", { id: 1 } end test "should subscribe to a channel on initialize" do assert_equal 1, @channel.room.id end test "on subscribe callbacks" do assert @channel.subscribed end test "channel params" do assert_equal({ id: 1 }, @channel.params) end test "unsubscribing from a channel" do assert @channel.room assert @channel.subscribed? @channel.unsubscribe_from_channel assert ! @channel.room assert ! @channel.subscribed? end test "connection identifiers" do assert_equal @user.name, @channel.current_user.name end test "callable action without any argument" do @channel.perform_action 'action' => :leave assert_equal [ :leave ], @channel.last_action end test "callable action with arguments" do data = { 'action' => :speak, 'content' => "Hello World" } @channel.perform_action data assert_equal [ :speak, data ], @channel.last_action end test "should not dispatch a private method" do @channel.perform_action 'action' => :rm_rf assert_nil @channel.last_action end test "should not dispatch a public method defined on Base" do @channel.perform_action 'action' => :kick assert_nil @channel.last_action end test "should dispatch a public method defined on Base and redefined on channel" do data = { 'action' => :topic, 'content' => "This is Sparta!" } @channel.perform_action data assert_equal [ :topic, data ], @channel.last_action end test "should dispatch calling a public method defined in an ancestor" do @channel.perform_action 'action' => :chatters assert_equal [ :chatters ], @channel.last_action end test "should dispatch receive action when perform_action is called with empty action" do data = { 'content' => 'hello' } @channel.perform_action data assert_equal [ :receive ], @channel.last_action end test "transmitting data" do @channel.perform_action 'action' => :get_latest expected = ActiveSupport::JSON.encode "identifier" => "{id: 1}", "message" => { "data" => "latest" } assert_equal expected, @connection.last_transmission end test "subscription confirmation" do expected = ActiveSupport::JSON.encode "identifier" => "{id: 1}", "type" => "confirm_subscription" assert_equal expected, @connection.last_transmission end test "actions available on Channel" do available_actions = %w(room last_action subscribed unsubscribed toggle_subscribed leave speak subscribed? get_latest receive chatters topic).to_set assert_equal available_actions, ChatChannel.action_methods end test "invalid action on Channel" do assert_logged("Unable to process ActionCable::Channel::BaseTest::ChatChannel#invalid_action") do @channel.perform_action 'action' => :invalid_action end end private def assert_logged(message) old_logger = @connection.logger log = StringIO.new @connection.instance_variable_set(:@logger, Logger.new(log)) begin yield log.rewind assert_match message, log.read ensure @connection.instance_variable_set(:@logger, old_logger) end end end