PyTest与单django模型创建

Question

我正在使用混音器来生成我的模型并使用pytest运行它们.我想做的只是生成我的模型一次,并使用我生成的相同模型运行多个测试.

这就是我想要的:

码

import pytest
from mixer.backend.django import mixer
from weddings.models import Wedding


@pytest.mark.django_db
class TestProductApi(object):

    @pytest.fixture(scope="module")
    def wedding(self):
        wedding = mixer.blend(
            'weddings.Wedding',
        )
        mixer.cycle(12).blend(
            'weddings.Product',
            wedding=wedding,
        )

        mixer.cycle(4).blend(
            'weddings.Product',
            wedding=wedding,
            is_visible=False,
        )

        mixer.blend(
            'weddings.Product',
            wedding=wedding,
            is_active=False,
        )
        return wedding

    def test_number_one(self, wedding):
        print 'running test_number_one'
        print 'wedding.id == {}'.format(wedding.id)
        print 'Wedding.objects.all().count() == {}'.format(Wedding.objects.all().count())
        print 'finished test_number_one'

    def test_number_two(self, wedding):
        print 'running test_number_two'
        print 'wedding.id == {}'.format(wedding.id)
        print 'Wedding.objects.all().count() == {}'.format(Wedding.objects.all().count())
        print 'finished test_number_two'

产量

tests/weddings/api/test_products.pyTestProductApi.test_number_one                                                        0%           running test_number_one
wedding.id == 1
Wedding.objects.all().count() == 1
finished test_number_one
 tests/weddings/api/test_products.pyTestProductApi.test_number_one ?                                                     50% ?????
 tests/weddings/api/test_products.pyTestProductApi.test_number_two                                                       50% ?????     running test_number_two
wedding.id == 1
Wedding.objects.all().count() == 0
finished test_number_two

我在测试中所做的并不重要,但是,我希望所有这些都使用相同的生成wedding对象运行.当我运行测试时,wedding每次创建测试时都会创建一个新的测试.

这是我正在使用的版本:
pytest==2.7.1
pytest-django==2.9.1
Django==1.8.8
mixer==5.3.1
python==2.7.6

编辑1:我也尝试在我的灯具上添加一个示波器,但这项工作仅适用于第一次测试.如果我在第二次测试中进行查询,则模型不存在,即使夹具工作正常.

编辑2:插入scope="module"夹具并显示运行测试的结果.

Answer 1

这对我有用。试一试...

import pytest
from mixer.backend.django import mixer
from weddings.models import Wedding

@pytest.fixture(scope="class")
def wedding(self):
    wedding_obj = mixer.blend(
        'weddings.Wedding',
    ) 
    mixer.cycle(12).blend(
        'weddings.Product',
        wedding=wedding_obj,
    ) 

    mixer.cycle(4).blend(
        'weddings.Product',
        wedding=wedding_obj,
        is_visible=False,
    ) 

    mixer.blend(
        'weddings.Product',
        wedding=wedding_obj,
        is_active=False,
    ) 
    return wedding_obj

@pytest.mark.django_db
@pytest.mark.usefixtures("wedding")
class TestProductApi(object):

    def test_number_one(self, wedding):
        print 'running test_number_one'
        print 'wedding.id == {}'.format(wedding.id)
        print 'Wedding.objects.all().count() == {}'.format(Wedding.objects.all().count())
        print 'finished test_number_one'

    def test_number_two(self, wedding):
        print 'running test_number_two'
        print 'wedding.id == {}'.format(wedding.id)
        print 'Wedding.objects.all().count() == {}'.format(Wedding.objects.all().count())
        print 'finished test_number_two'