feat: cms softdelet bug fix

test/test_cms_user.py

@@ -127,6 +127,18 @@ class CmsUserCrudTest(CacheTestCase):
         obj = User.all_objects.get(id=u.id)
         self.assertTrue(obj.is_deleted)                            # 实际未物删
 
+    def test_recreate_soft_deleted_phone_returns_400(self):
+        """软删后用相同手机号重建：返回 400 CMS_USER_PHONE_EXISTS（不产生重复行）。"""
+        u = create_test_user(phone='13922200061', role_type='student', institution=self.inst)
+        self.client.delete(u_detail(u.id))
+        self.assertFalse(User.objects.filter(phone='13922200061').exists())
+        resp = self.client.post(CMS_USER_URL, {
+            'phone': '13922200061', 'real_name': '重建', 'role_type': 'student',
+            'institution': self.inst.id})
+        self.assertEqual(resp.status_code, 400, resp.content)
+        self.assertEqual(resp.json()['code'], 'CMS_USER_PHONE_EXISTS')
+        self.assertEqual(User.all_objects.filter(phone='13922200061').count(), 1)
+
     def test_reset_password(self):
         u = create_test_user(phone='13922200070', password='OldPass1', role_type='student')
         resp = self.client.post(f'/api/cms/users/{u.id}/reset-password/', {})