[Fix rails#50713] Do not trigger loading of ActiveJob::Base in ActiveJob::TestHelper

Author: maximerety

activejob/CHANGELOG.md

@@ -1,3 +1,7 @@
+*   Do not trigger immediate loading of `ActiveJob::Base` when loading `ActiveJob::TestHelper`.
+
+    *Maxime Réty*
+
 *   Preserve the serialized timezone when deserializing `ActiveSupport::TimeWithZone` arguments.
 
     *Joshua Young*

activejob/lib/active_job/test_helper.rb

@@ -34,7 +34,9 @@ def enable_test_adapter(test_adapter)
       end
     end
 
-    ActiveJob::Base.include(TestQueueAdapter)
+    ActiveSupport.on_load(:active_job) do
+      ActiveJob::Base.include(TestQueueAdapter)
+    end
 
     def before_setup # :nodoc:
       test_adapter = queue_adapter_for_test