require 'test_helper' require 'stubs/test_connection' require 'stubs/room' class ActionCable::Channel::StreamTest < ActionCable::TestCase class ChatChannel < ActionCable::Channel::Base def subscribed if params[:id] @room = Room.new params[:id] stream_from "test_room_#{@room.id}" end end def send_confirmation transmit_subscription_confirmation end end test "streaming start and stop" do run_in_eventmachine do connection = TestConnection.new connection.expects(:pubsub).returns mock().tap { |m| m.expects(:subscribe).with("test_room_1", kind_of(Proc), kind_of(Proc)).returns stub_everything(:pubsub) } channel = ChatChannel.new connection, "{id: 1}", { id: 1 } connection.expects(:pubsub).returns mock().tap { |m| m.expects(:unsubscribe) } channel.unsubscribe_from_channel end end test "stream_for" do run_in_eventmachine do connection = TestConnection.new EM.next_tick do connection.expects(:pubsub).returns mock().tap { |m| m.expects(:subscribe).with("action_cable:channel:stream_test:chat:Room#1-Campfire", kind_of(Proc), kind_of(Proc)).returns stub_everything(:pubsub) } end channel = ChatChannel.new connection, "" channel.stream_for Room.new(1) end end test "stream_from subscription confirmation" do EM.run do connection = TestConnection.new ChatChannel.new connection, "{id: 1}", { id: 1 } assert_nil connection.last_transmission EM::Timer.new(0.1) do expected = ActiveSupport::JSON.encode "identifier" => "{id: 1}", "type" => "confirm_subscription" connection.transmit(expected) assert_equal expected, connection.last_transmission, "Did not receive subscription confirmation within 0.1s" EM.run_deferred_callbacks EM.stop end end end test "subscription confirmation should only be sent out once" do EM.run do connection = TestConnection.new channel = ChatChannel.new connection, "test_channel" channel.send_confirmation channel.send_confirmation EM.run_deferred_callbacks expected = ActiveSupport::JSON.encode "identifier" => "test_channel", "type" => "confirm_subscription" assert_equal expected, connection.last_transmission, "Did not receive subscription confirmation" assert_equal 1, connection.transmissions.size EM.stop end end end