［修改］测试实体类

mock/serializers/assignment/ProjectSerializer.js

@@ -17,7 +17,7 @@ const makeId = require("../../util/makeId");
  * @returns {ProjectSerializerType}
  */
 
-module.exports = () => {
+module.exports = function projectSerializer() {
   return {
     id: makeId(),
     codeId: makeId(),