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utils.py
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76 lines (54 loc) · 1.92 KB
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# -*- coding: utf-8 -*-
import functools
from django.conf import settings
from django.db.models import signals
def signals_switch():
pre_save = signals.pre_save.receivers
post_save = signals.post_save.receivers
def disconnect():
signals.pre_save.receivers = []
signals.post_save.receivers = []
def reconnect():
signals.pre_save.receivers = pre_save
signals.post_save.receivers = post_save
return disconnect, reconnect
disconnect_signals, reconnect_signals = signals_switch()
def set_settings(**new_settings):
"""Decorator for set django settings that will be only available during the
wrapped-function execution.
For example:
@set_settings(FOO='bar')
def myfunc():
...
@set_settings(FOO='bar')
class TestCase:
...
"""
def decorator(testcase):
if type(testcase) is type:
namespace = {"OVERRIDE_SETTINGS": new_settings, "ORIGINAL_SETTINGS": {}}
wrapper = type(testcase.__name__, (SettingsTestCase, testcase), namespace)
else:
@functools.wraps(testcase)
def wrapper(*args, **kwargs):
old_settings = override_settings(new_settings)
try:
testcase(*args, **kwargs)
finally:
override_settings(old_settings)
return wrapper
return decorator
def override_settings(new_settings):
old_settings = {}
for name, new_value in list(new_settings.items()):
old_settings[name] = getattr(settings, name, None)
setattr(settings, name, new_value)
return old_settings
class SettingsTestCase(object):
@classmethod
def setup_class(cls):
cls.ORIGINAL_SETTINGS = override_settings(cls.OVERRIDE_SETTINGS)
@classmethod
def teardown_class(cls):
override_settings(cls.ORIGINAL_SETTINGS)
cls.OVERRIDE_SETTINGS.clear()