modify UserRepoTest

core/src/test/java/com/mooctest/crowd/domain/repository/UserRepoTest.java

@@ -151,7 +151,10 @@ public class UserRepoTest {
         user.setEvaluationAgency(evaluationAgency);
         user.setRoleList(roleList);
 
+        expectUserPO.setId(0L);
+
         when(userDao.save(any(UserPO.class))).thenReturn(expectUserPO);
+        when(userDao.findById(any(Long.class))).thenReturn(Optional.of(expectUserPO));
         //action
         User resultUser = userRepo.saveUser(user);
         //assert