test.SimpleTestCase.allow_database_queries

Warning

SimpleTestCase and its subclasses (e.g. TestCase, ...) rely on setUpClass() and tearDownClass() to perform some class-wide initialization (e.g. overriding settings). If you need to override those methods, don’t forget to call the super implementation:

class MyTestCase(TestCase):

    @classmethod
    def setUpClass(cls):
        super(MyTestCase, cls).setUpClass()
        ...

    @classmethod
    def tearDownClass(cls):
        ...
        super(MyTestCase, cls).tearDownClass()

Be sure to account for Python’s behavior if an exception is raised during setUpClass(). If that happens, neither the tests in the class nor tearDownClass() are run. In the case of django.test.TestCase, this will leak the transaction created in super() which results in various symptoms including a segmentation fault on some platforms (reported on OS X). If you want to intentionally raise an exception such as unittest.SkipTest in setUpClass(), be sure to do it before calling super() to avoid this.