```
manila.tests.cmd.test_manage.ManilaCmdManageTestCase.test_share_deletetesttools.testresult.real._StringException: Traceback (most recent call last):
  File "/home/zuul/src/opendev.org/openstack/manila/manila/tests/cmd/test_manage.py", line 459, in test_share_delete
    self.share_cmds.delete(share_id)
  File "/home/zuul/src/opendev.org/openstack/manila/manila/cmd/manage.py", line 428, in delete
    db.share_delete(ctxt, share_id)
  File "/home/zuul/src/opendev.org/openstack/manila/manila/db/api.py", line 490, in share_delete
    return IMPL.share_delete(context, share_id)
  File "/home/zuul/src/opendev.org/openstack/manila/manila/db/sqlalchemy/api.py", line 170, in wrapper
    if not is_admin_context(args[0]) and not is_user_context(args[0]):
  File "/home/zuul/src/opendev.org/openstack/manila/manila/db/sqlalchemy/api.py", line 103, in is_admin_context
    return context.is_admin
AttributeError: 'str' object has no attribute 'is_admin'
```