python - factory_boy 工厂的多重继承——似乎只继承了第一个父级

Question

我试图继承两个 ~Factory factory_boy 类，但似乎只继承了第一个类，第二个被忽略了。 (他们确实有一个共同的 parent 。)

class BasicFactory(factory.DjangoModelFactory):
    # Meta class, some SubFactories and RelatedFactoriues, a post_generation method

class BasicFactoryWithExtraRelatedFactories(BasicFactory):
    another_related = factory.RelatedFactory(SomethingElseFactory, 'basic', etc)

class BasicFactoryWithExtraPostGeneration(BasicFactory):
    @factory.post_generation
    def post(self, create, extracted, **kwargs):
        """
        A replacement post_generation method
        """

class ExtraRelatedAndExtraPostGenerationFactory(BasicFactoryWithExtraRelatedFactories, BasicFactoryWithExtraPostGeneration)
    """
    This seems to inherit the extra RelatedFactories, but not the extra post_generation method.
    """

class ExtraRelatedAndExtraPostGenerationFactory(BasicFactoryWithExtraPostGeneration, BasicFactoryWithExtraRelatedFactories)
    """
    This seems to inherit the extra post_generation method, but not the extra RelatedFactories.
    """

有什么方法可以同时继承两者吗？

我知道这是一项艰巨的任务，但它可以为我遇到的问题提供如此美妙的解决方案，这样我就可以简单地通过多重继承创建所有需要的测试用例组合。 (我认识到在 factory_boy 中支持它可能并不“简单”。)

Answer 1

这种方法对我有用，两个最终子类都继承了相关工厂和后生成方法，所以我预计实际场景比你上面的测试代码更复杂。这是我的实际代码:

class BasicFactory(factory.DjangoModelFactory):

    country = factory.SubFactory(CountryFactory)
    code = factory.Sequence(lambda n: 'unit%d' % n)
    name = factory.Sequence(lambda n: 'Unit %d' % n)
    full_name = factory.Sequence(lambda n: 'Unit %d, etc.' % n)
    unit_type = factory.SubFactory(GeographicUnitTypeFactory)

    class Meta:
        model = 'spatial.GeographicUnit'


class BasicFactoryWithExtraRelatedFactories(BasicFactory):
    season = factory.RelatedFactory(SeasonFactory, 'geographicunit')


class BasicFactoryWithExtraPostGeneration(BasicFactory):

    @factory.post_generation
    def post(self, create, extracted, **kwargs):
        """
        A replacement post_generation method
        """
        self.name = self.name + ' after post'


class ExtraRelatedAndExtraPostGenerationFactory(BasicFactoryWithExtraRelatedFactories, BasicFactoryWithExtraPostGeneration):
    """
    This seems to inherit the extra RelatedFactories, but not the extra post_generation method.
    """


class ExtraPostGenerationAndExtraRelatedFactory(BasicFactoryWithExtraPostGeneration, BasicFactoryWithExtraRelatedFactories):
    """
    This seems to inherit the extra post_generation method, but not the extra RelatedFactories.
    """

from django.test import TestCase


class MyTestCase(TestCase):

    def test_extrarelated(self):
        obj = ExtraRelatedAndExtraPostGenerationFactory()
        self.assertTrue(obj.name.endswith(' after post'))
        self.assertEqual(Season.objects.filter(geographicunit=obj).count(), 1)

    def test_extrapostgeneration(self):
        obj = ExtraPostGenerationAndExtraRelatedFactory()
        self.assertTrue(obj.name.endswith(' after post'))
        self.assertEqual(Season.objects.filter(geographicunit=obj).count(), 1)

结果如下:

 ./manage.py test --settings=fdw.settings.sqlite spatial.tests.factories:MyTestCase
nosetests spatial.tests.factories:MyTestCase --nocapture --nologcapture --stopwatch-file=.nose-stopwatch-times-sqlite --verbosity=1
Creating test database for alias 'default'...
..
----------------------------------------------------------------------
Ran 2 tests in 0.037s

OK