actioncable/test/subscription_adapter/subscriber_map_test.rb


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require "test_helper"

class SubscriberMapTest < ActionCable::TestCase
  test "broadcast should not change subscribers" do
    setup_subscription_map
    origin = @subscription_map.instance_variable_get(:@subscribers).dup

    @subscription_map.broadcast("not_exist_channel", "")

    assert_equal origin, @subscription_map.instance_variable_get(:@subscribers)
  end

  private
    def setup_subscription_map
      @subscription_map = ActionCable::SubscriptionAdapter::SubscriberMap.new
    end
end