feat: adding integration tests

backend/middleware/middleware.go

@@ -104,7 +104,7 @@ func GetPathParamID(logger *log.Logger, param string, w http.ResponseWriter, r *
 	}
 
 	uuidParam, err := uuid.Parse(pathParam)
-	if len(pathParam) == 0 {
+	if err != nil {
 		w.WriteHeader(http.StatusBadRequest)
 
 		err := fmt.Errorf("could not parse param: %w", err)