1 files changed, 20 insertions, 0 deletions
diff --git a/actionpack/test/abstract_unit.rb b/actionpack/test/abstract_unit.rb
index 86c8a95a43..214d79cd87 100644
--- a/actionpack/test/abstract_unit.rb
+++ b/actionpack/test/abstract_unit.rb
@@ -105,6 +105,26 @@ class ActionController::IntegrationTest < ActiveSupport::TestCase
 
   self.app = build_app
 
+  class StubDispatcher
+    def self.new(*args)
+      lambda { |env|
+        params = env['action_dispatch.request.path_parameters']
+        controller, action = params[:controller], params[:action]
+        [200, {'Content-Type' => 'text/html'}, ["#{controller}##{action}"]]
+      }
+    end
+  end
+
+  def self.stub_controllers
+    old_dispatcher = ActionDispatch::Routing::RouteSet::Dispatcher
+    ActionDispatch::Routing::RouteSet.module_eval { remove_const :Dispatcher }
+    ActionDispatch::Routing::RouteSet.module_eval { const_set :Dispatcher, StubDispatcher }
+    yield ActionDispatch::Routing::RouteSet.new
+  ensure
+    ActionDispatch::Routing::RouteSet.module_eval { remove_const :Dispatcher }
+    ActionDispatch::Routing::RouteSet.module_eval { const_set :Dispatcher, old_dispatcher }
+  end
+
   def with_routing(&block)
     real_routes = ActionController::Routing::Routes
     ActionController::Routing.module_eval { remove_const :Routes }