Merge pull request rails#42574 from leastbad/connection_identifier

add connection_identifier to ConnectionStub

Author: rafaelfranca

actioncable/lib/action_cable/channel/test_case.rb

@@ -62,6 +62,25 @@ def initialize(identifiers = {})
       def transmit(cable_message)
         transmissions << cable_message.with_indifferent_access
       end
+
+      def connection_identifier
+        unless defined? @connection_identifier
+          @connection_identifier = connection_gid identifiers.filter_map { |id| send(id.to_sym) if id }
+        end
+
+        @connection_identifier
+      end
+
+      private
+        def connection_gid(ids)
+          ids.map do |o|
+            if o.respond_to? :to_gid_param
+              o.to_gid_param
+            else
+              o.to_s
+            end
+          end.sort.join(":")
+        end
     end
 
     # Superclass for Action Cable channel functional tests.

actioncable/test/channel/test_case_test.rb

@@ -62,6 +62,7 @@ def test_connection_identifiers
 
     assert_equal "John", subscription.username
     assert subscription.admin
+    assert_equal "John:true", connection.connection_identifier
   end
 end