python - Django 测试失败，内部错误 : no such savepoint. DB : Postgres, 通过 mysql

Question

有趣的是，它也适用于 shell。

   [MY code which calls Model.objects.get_or_create(...)]
  File "/usr/lib/python2.5/site-packages/django/db/models/manager.py", line 123, in get_or_create
    return self.get_query_set().get_or_create(**kwargs)
  File "/usr/lib/python2.5/site-packages/django/db/models/query.py", line 308, in get_or_create
    transaction.savepoint_rollback(sid)
  File "/usr/lib/python2.5/site-packages/django/db/transaction.py", line 199, in savepoint_rollback
    connection._savepoint_rollback(sid)
  File "/usr/lib/python2.5/site-packages/django/db/backends/__init__.py", line 67, in _savepoint_rollback
    self.cursor().execute(self.ops.savepoint_rollback_sql(sid))
InternalError: no such savepoint

Answer 1

如果你想测试使用交易的代码，你需要继承TransactionTestCase而不是 TestCase

例如:

from django.test import TransactionTestCase

class MyTests(TransactionTestCase):
    ...

它可能在 MySql 中传递，因为您使用的是不支持事务的 MyISAM 表