1 files changed, 16 insertions, 0 deletions
diff --git a/actioncable/test/subscription_adapter/common.rb b/actioncable/test/subscription_adapter/common.rb
index 3aa88c2caa..c533a9f3eb 100644
--- a/actioncable/test/subscription_adapter/common.rb
+++ b/actioncable/test/subscription_adapter/common.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 require "concurrent"
 
@@ -112,4 +114,18 @@ module CommonSubscriptionAdapterTest
       assert_equal "two", queue.pop
     end
   end
+
+  def test_long_identifiers
+    channel_1 = "a" * 100 + "1"
+    channel_2 = "a" * 100 + "2"
+    subscribe_as_queue(channel_1) do |queue|
+      subscribe_as_queue(channel_2) do |queue_2|
+        @tx_adapter.broadcast(channel_1, "apples")
+        @tx_adapter.broadcast(channel_2, "oranges")
+
+        assert_equal "apples", queue.pop
+        assert_equal "oranges", queue_2.pop
+      end
+    end
+  end
 end