Files
django-anymail/djrill/tests/utils.py
medmunds 8815601b65 Use override_settings rather than mucking with settings in tests
Second attempt to address possible test sequencing issue around tests that alter settings. (Failures in Travis tests not reproducible locally.)

Back-ports override_settings from Django 1.4 for compatibility with Django 1.3.
2014-04-20 16:04:31 -07:00

69 lines
2.7 KiB
Python

__all__ = (
'override_settings',
)
try:
from django.test.utils import override_settings
except ImportError:
# Back-port override_settings from Django 1.4
# https://github.com/django/django/blob/stable/1.4.x/django/test/utils.py
from django.conf import settings, UserSettingsHolder
from django.utils.functional import wraps
class override_settings(object):
"""
Acts as either a decorator, or a context manager. If it's a decorator it
takes a function and returns a wrapped function. If it's a contextmanager
it's used with the ``with`` statement. In either event entering/exiting
are called before and after, respectively, the function/block is executed.
"""
def __init__(self, **kwargs):
self.options = kwargs
self.wrapped = settings._wrapped
def __enter__(self):
self.enable()
def __exit__(self, exc_type, exc_value, traceback):
self.disable()
def __call__(self, test_func):
from django.test import TransactionTestCase
if isinstance(test_func, type) and issubclass(test_func, TransactionTestCase):
original_pre_setup = test_func._pre_setup
original_post_teardown = test_func._post_teardown
def _pre_setup(innerself):
self.enable()
original_pre_setup(innerself)
def _post_teardown(innerself):
original_post_teardown(innerself)
self.disable()
test_func._pre_setup = _pre_setup
test_func._post_teardown = _post_teardown
return test_func
else:
@wraps(test_func)
def inner(*args, **kwargs):
with self:
return test_func(*args, **kwargs)
return inner
def enable(self):
override = UserSettingsHolder(settings._wrapped)
for key, new_value in self.options.items():
setattr(override, key, new_value)
settings._wrapped = override
# No setting_changed signal in Django 1.3
# for key, new_value in self.options.items():
# setting_changed.send(sender=settings._wrapped.__class__,
# setting=key, value=new_value)
def disable(self):
settings._wrapped = self.wrapped
# No setting_changed signal in Django 1.3
# for key in self.options:
# new_value = getattr(settings, key, None)
# setting_changed.send(sender=settings._wrapped.__class__,
# setting=key, value=new_value)