alias middleware_args middleware_args_old

Author: hannahramadan

instrumentation/rack/lib/opentelemetry/instrumentation/rack/instrumentation.rb

@@ -48,6 +48,8 @@ def middleware_args_old
           end
         end
 
+        alias middleware_args middleware_args_old
+
         def middleware_args_dup
           if config.fetch(:use_rack_events, false) == true && defined?(OpenTelemetry::Instrumentation::Rack::Middlewares::Dup::EventHandler)
             [::Rack::Events, [OpenTelemetry::Instrumentation::Rack::Middlewares::Dup::EventHandler.new]]

instrumentation/rack/test/opentelemetry/instrumentation/rack/instrumentation_old_test.rb

@@ -72,5 +72,14 @@
         _(args).must_equal [OpenTelemetry::Instrumentation::Rack::Middlewares::Old::TracerMiddleware]
       end
     end
+
+    describe 'when previously defined middleware_args is called' do
+      let(:config) { Hash(use_rack_events: false) }
+
+      it 'alias to middleware_args_old' do
+        args = instrumentation.middleware_args
+        _(args).must_equal [OpenTelemetry::Instrumentation::Rack::Middlewares::Old::TracerMiddleware]
+      end
+    end
   end
 end