Add output test for propolis-server

Author: lif

progenitor-impl/src/method.rs

@@ -891,10 +891,10 @@ impl Generator {
                         }
                     }
                     OperationResponseType::Upgrade => {
-                        quote! {
-                            Err(Error::ErrorResponse(
-                                ResponseValue::upgrade(response).await?
-                            ))
+                        if response.status_code == OperationResponseStatus::Default {
+                            return quote! { } // catch-all handled below
+                        } else {
+                            todo!("non-default error response handling for upgrade requests is not yet implemented");
                         }
                     }
                 };