Django 1.8 和 Nose : conflicting models?

Question

我有一个最近升级到 Django 1.8.4 的 Django 应用程序。我正在使用 Nose 1.3.7 和 django-nose 1.4.1 让我的测试运行器运行 200 多个集成和单元测试。由于升级了 Django 和 Nose ，我发现我的 12 个测试失败并出现同样的错误:

======================================================================
ERROR: Failure: RuntimeError (Conflicting 'c' models in application 'nose': <class 'account.tests.form_tests.TestAddress'> and <class 'nose.util.C'>.)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/me/venv/myproj/lib/python2.7/site-packages/nose/loader.py", line 523, in makeTest
    return self._makeTest(obj, parent)
  File "/Users/me/venv/myproj/lib/python2.7/site-packages/nose/loader.py", line 568, in _makeTest
    obj = transplant_class(obj, parent.__name__)
  File "/Users/me/venv/myproj/lib/python2.7/site-packages/nose/util.py", line 644, in transplant_class
    class C(cls):
  File "/Users/me/venv/myproj/lib/python2.7/site-packages/django/db/models/base.py", line 311, in __new__
    new_class._meta.apps.register_model(new_class._meta.app_label, new_class)
  File "/Users/me/venv/myproj/lib/python2.7/site-packages/django/apps/registry.py", line 223, in register_model
    (model_name, app_label, app_models[model_name], model))
RuntimeError: Conflicting 'c' models in application 'nose': <class 'account.tests.form_tests.TestAddress'> and <class 'nose.util.C'>.

奇怪的是 form_tests.py 模块甚至没有引用 TestAddress 这实际上是我的“配置文件”模型中的一个类:

# myprof/profile/models.py
class TestAddress(models.Model):
    user = models.OneToOneField(User, primary_key=True, unique=True)
    address_line_1 = models.CharField(max_length=30)
    address_line_2 = models.CharField(max_length=30, null=True, blank=True)
    city = models.CharField(max_length=30)
    region = models.CharField(max_length=30, null=True, blank=True)
    postal_code = models.CharField(max_length=10, null=True, blank=True)
    country = models.ForeignKey('Country')

    class Meta:
        db_table = 'test_address'

    def __unicode__(self):
        return u'%s' % (self.user.username)

当我的测试需要生成 TestAddress 类的实例时，我使用 factory_boy (v. 2.5.2) 工厂:

# utils/factories.py
from profile.models import TestAddress

class UserFactory(factory.django.DjangoModelFactory):
class Meta:
    model = User
username = 'testuser'

class TestAddressFactory(factory.django.DjangoModelFactory):
    class Meta:
        model = TestAddress
    user = factory.SubFactory('utils.factories.UserFactory')
    address_line_1 = '123 Main St.'
    address_line_2 = 'Apt. A'
    city = 'AnyCity'
    region = 'AnyRegion'
    postal_code = '12345'
    country = factory.SubFactory('utils.factories.CountryFactory')

我在 Nose loader.py 模块中设置断点并确认加载程序在“profile.models”中看到“TestAddress”。但是，有一个“parent.__name__”变量设置为“account.tests.model_tests”。我有一些问题:

1. Why is this occurring? 
2. Is there a way I can fix it?  
3. Is there some way I can get nose to tell me which tests are resulting in these runtime errors so that I can at least disable them if I can't fix the problem?  

我设置了“--verbosity=2”但是
不显示失败测试的名称。我浏览了 Nose 文档，没有看到任何东西。最坏的情况是我可以编写一个脚本来单独调用每个测试并在运行之前回显测试名称，但这看起来非常丑陋且耗时。

谢谢。

Answer 1

我在将 Django 项目从 1.6 移植到 1.8 并将 django-nose 更新到 1.4.3 时遇到了同样的问题。

似乎有了新的DiscoverRunner从 1.7 开始使用，django-nose 尝试运行所有以 Test* 开头的类作为测试用例，这导致它们在测试模块中遇到之前被改编成 django-nose 的 django 应用程序。

我设法通过重命名它们来解决这个问题，以避免这种命名方案，比如 AdressTestModel .