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# frozen_string_literal: true
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
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