测试期间没有加载夹具

Question

I wrote a unit test checking whether initial data is loaded correctly. However the Node.objects.all().count() always returns 0, thus it seems as the fixtures are not loaded at all. There is no output/error msg in the command line that fixtures are not loaded.

from core.models import Node

class NodeTableTestCase(unittest.TestCase):
    fixtures = ['core/core_fixture.json']
    def setUp(self):
        print "nothing to prepare..."

    def testFixture(self):
        """Check if initial data can be loaded correctly"""
        self.assertEqual(Node.objects.all().count(), 14) 

the fixture core_fixture.json contains 14 nodes and I'm using this fixture as a initial data load into the db using the following command:

python manage.py loaddata core/core_fixture.json

They are located in the folder I provided in the settings.py setting FIXTURE_DIRS .

Answer 1

Found the solution in another thread, answer from John Mee

# Import the TestCase from django.test:

# Bad:  import unittest
# Bad:  import django.utils.unittest
# Good: import django.test

from django.test import TestCase

class test_something(TestCase):
    fixtures = ['one.json', 'two.json']
    ...

Doing this I got a proper error message, saying that foreign key is violated and I had to also include the fixtures for the app "auth". I exported the needed data with this command:

manage.py dumpdata auth.User auth.Group > usersandgroups.json

Using Unittest I got only the message that loading of fixture data failed, which was not very helpful.

Finally my working test looks like this:

from django.test import TestCase

class NodeTableTestCase2(TestCase):
    fixtures = ['auth/auth_usersandgroups_fixture.json','core/core_fixture.json']

    def setUp(self):
        # Test definitions as before.
        print "welcome in setup: while..nothing to setup.."

    def testFixture2(self):
        """Check if initial data can be loaded correctly"""
        self.assertEqual(Node.objects.all().count(), 11)  

Answer 2

When loading fixtures in test cases, I don't think Django allows you to include the directory name. Try changing your fixtures setting to:

fixtures = ['core_fixture.json',]

You might have to change your FIXTURE_DIRS setting as well, to include the core directory.

If you run your tests in verbose mode , you will see the fixture files that Django attempts to load. This should help you debug your configuration.

python manage.py test -v 2

Answer 3

确保您的应用已在INSTALLED_APPS列出，并且您的应用包含models.py文件。