diff --git a/test/integration/api_test/projects_test.rb b/test/integration/api_test/projects_test.rb
index d1dd6c24a..0c75d1fb4 100644
--- a/test/integration/api_test/projects_test.rb
+++ b/test/integration/api_test/projects_test.rb
@@ -416,4 +416,8 @@ class Redmine::ApiTest::ProjectsTest < Redmine::ApiTest::Base
     assert p = Project.find(1)
     assert p.active?
   end
+
+  def queue_adapter_for_test
+    ActiveJob::QueueAdapters::TestAdapter.new
+  end
 end
diff --git a/test/unit/jobs/destroy_project_job_test.rb b/test/unit/jobs/destroy_project_job_test.rb
index 2fe1a9fe3..667f0c864 100644
--- a/test/unit/jobs/destroy_project_job_test.rb
+++ b/test/unit/jobs/destroy_project_job_test.rb
@@ -66,4 +66,8 @@ class DestroyProjectJobTest < ActiveJob::TestCase
       )
     end
   end
+
+  def queue_adapter_for_test
+    ActiveJob::QueueAdapters::TestAdapter.new
+  end
 end
diff --git a/test/unit/jobs/destroy_projects_job_test.rb b/test/unit/jobs/destroy_projects_job_test.rb
index 0008ce189..1a8e78394 100644
--- a/test/unit/jobs/destroy_projects_job_test.rb
+++ b/test/unit/jobs/destroy_projects_job_test.rb
@@ -1,5 +1,4 @@
 # frozen_string_literal: true
-
 # Redmine - project management software
 # Copyright (C) 2006-  Jean-Philippe Lang
 #
@@ -66,4 +65,8 @@ class DestroyProjectsJobTest < ActiveJob::TestCase
       )
     end
   end
+
+  def queue_adapter_for_test
+    ActiveJob::QueueAdapters::TestAdapter.new
+  end
 end