加载测试单一时出错

Question

我正在用json制作一组数据来运行单一测试，但是我遇到了一个问题，如果有人可以帮助我，我会很感激。

json文件是：

[
    {"pk":1,
    "model":"key_process_indicator_bsc.StrategicType",
    "fields":{
                "name":"UEN",
                "created_at": "2015-11-11",
                "modified_at": "2015-11-11",
                "deleted": 0
             }

    }


]

并且单一测试是：

from django.test import TestCase
from key_process_indicator_bsc.models import *

class ModelsTestCase(TestCase):
    fixtures = ['test_data_key_process_indicator_bsc.json']

    def test_levels(self):
        StrategicType = StrategicType.objects.get(name = "UEN")
        self.assertTrue(isinstance(StrategicType, StrategicType))
        self.assertEqual(StrategicType.__str__(), StrategicType.name)

问题是：

ERROR: test_levels (key_process_indicator_bsc.unitary_test.test_models.ModelsTestCase)
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Traceback (most recent call last):
  File "/home/leidyj/key_process_indicator_bsc_repository/key_process_indicator_bsc/key_process_indicator_bsc/unitary_test/test_models.py",
 line 8, in test_levels
    StrategicType = StrategicType.objects.get(name = "UEN")
UnboundLocalError: local variable 'StrategicType' referenced before assignment

----------------------------------------------------------------------

感谢;