Stubbing django settings with Mock

settings.py

SOME_SETTING = 'some value'

tests.py

from django.test import TestCase

from myapp.utils import get_some_setting
from mock import patch

class SimpleTest(TestCase):
    # see http://www.voidspace.org.uk/python/mock/patch.html#where-to-patch
    @patch('myapp.utils.settings', SOME_SETTING='FAKED!')
    def test_get_some_setting_returns_some_setting(self, settings):
        assert get_some_setting() == 'FAKED!'

utils.py

from django.conf import settings

def get_some_setting():
    return settings.SOME_SETTING

Django 1.4 provides a decoraor @override_settings allows you mock Django settings.
So the recommended way is:

from django.test.utils import override_settings
...


class ABCTest(TestCase)

    @override_settings(DEBUG=False)
    def test_xyz(self):
        # do something