2015-01-28 20:35:27 +08:00
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from functools import update_wrapper, wraps
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2013-07-01 20:22:27 +08:00
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from unittest import TestCase
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2008-02-25 14:02:35 +08:00
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2010-10-11 20:55:17 +08:00
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from django.contrib.admin.views.decorators import staff_member_required
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2015-01-28 20:35:27 +08:00
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from django.contrib.auth.decorators import (
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login_required, permission_required, user_passes_test,
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)
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from django.http import HttpRequest, HttpResponse, HttpResponseNotAllowed
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2011-10-14 02:51:33 +08:00
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from django.middleware.clickjacking import XFrameOptionsMiddleware
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2015-07-22 04:54:37 +08:00
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from django.test import SimpleTestCase
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2010-10-11 20:55:17 +08:00
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from django.utils.decorators import method_decorator
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2014-11-24 21:36:10 +08:00
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from django.utils.functional import allow_lazy, lazy
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2015-01-28 20:35:27 +08:00
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from django.views.decorators.cache import (
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cache_control, cache_page, never_cache,
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)
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from django.views.decorators.clickjacking import (
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xframe_options_deny, xframe_options_exempt, xframe_options_sameorigin,
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)
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from django.views.decorators.http import (
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condition, require_GET, require_http_methods, require_POST, require_safe,
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)
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from django.views.decorators.vary import vary_on_cookie, vary_on_headers
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2010-10-11 20:55:17 +08:00
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2008-02-25 14:02:35 +08:00
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def fully_decorated(request):
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"""Expected __doc__"""
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return HttpResponse('<html><body>dummy</body></html>')
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fully_decorated.anything = "Expected __dict__"
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2011-05-24 00:08:36 +08:00
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def compose(*functions):
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# compose(f, g)(*args, **kwargs) == f(g(*args, **kwargs))
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functions = list(reversed(functions))
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2013-10-22 18:21:07 +08:00
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2011-05-24 00:08:36 +08:00
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def _inner(*args, **kwargs):
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result = functions[0](*args, **kwargs)
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for f in functions[1:]:
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result = f(result)
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return result
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return _inner
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full_decorator = compose(
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# django.views.decorators.http
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require_http_methods(["GET"]),
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require_GET,
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require_POST,
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require_safe,
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2012-02-10 02:57:06 +08:00
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condition(lambda r: None, lambda r: None),
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2011-05-24 00:08:36 +08:00
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# django.views.decorators.vary
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vary_on_headers('Accept-language'),
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vary_on_cookie,
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# django.views.decorators.cache
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2013-11-03 06:50:35 +08:00
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cache_page(60 * 15),
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2011-05-24 00:08:36 +08:00
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cache_control(private=True),
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never_cache,
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# django.contrib.auth.decorators
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# Apply user_passes_test twice to check #9474
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2013-10-27 03:15:03 +08:00
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user_passes_test(lambda u: True),
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2011-05-24 00:08:36 +08:00
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login_required,
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permission_required('change_world'),
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# django.contrib.admin.views.decorators
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staff_member_required,
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# django.utils.functional
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allow_lazy,
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lazy,
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)
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fully_decorated = full_decorator(fully_decorated)
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2010-02-09 23:02:39 +08:00
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2013-11-03 06:50:35 +08:00
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2008-02-25 14:02:35 +08:00
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class DecoratorsTest(TestCase):
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def test_attributes(self):
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"""
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Tests that django decorators set certain attributes of the wrapped
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function.
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"""
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2011-03-03 23:04:39 +08:00
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self.assertEqual(fully_decorated.__name__, 'fully_decorated')
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self.assertEqual(fully_decorated.__doc__, 'Expected __doc__')
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self.assertEqual(fully_decorated.__dict__['anything'], 'Expected __dict__')
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2009-04-02 00:17:38 +08:00
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def test_user_passes_test_composition(self):
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"""
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Test that the user_passes_test decorator can be applied multiple times
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(#9474).
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"""
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def test1(user):
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user.decorators_applied.append('test1')
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return True
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2010-10-11 20:55:17 +08:00
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2009-04-02 00:17:38 +08:00
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def test2(user):
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user.decorators_applied.append('test2')
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return True
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2010-10-11 20:55:17 +08:00
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2009-04-02 00:17:38 +08:00
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def callback(request):
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return request.user.decorators_applied
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callback = user_passes_test(test1)(callback)
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callback = user_passes_test(test2)(callback)
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2010-10-11 20:55:17 +08:00
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2013-10-17 16:17:41 +08:00
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class DummyUser(object):
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pass
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class DummyRequest(object):
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pass
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2010-10-11 20:55:17 +08:00
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2009-04-02 00:17:38 +08:00
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request = DummyRequest()
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request.user = DummyUser()
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request.user.decorators_applied = []
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response = callback(request)
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2010-10-11 20:55:17 +08:00
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2009-04-02 00:17:38 +08:00
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self.assertEqual(response, ['test2', 'test1'])
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2009-09-22 06:31:51 +08:00
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def test_cache_page_new_style(self):
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"""
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Test that we can call cache_page the new way
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"""
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def my_view(request):
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return "response"
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my_view_cached = cache_page(123)(my_view)
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self.assertEqual(my_view_cached(HttpRequest()), "response")
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2009-09-29 05:54:54 +08:00
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my_view_cached2 = cache_page(123, key_prefix="test")(my_view)
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self.assertEqual(my_view_cached2(HttpRequest()), "response")
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2009-09-22 06:31:51 +08:00
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2011-04-28 21:04:16 +08:00
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def test_require_safe_accepts_only_safe_methods(self):
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"""
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Test for the require_safe decorator.
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A view returns either a response or an exception.
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Refs #15637.
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"""
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def my_view(request):
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return HttpResponse("OK")
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my_safe_view = require_safe(my_view)
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request = HttpRequest()
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request.method = 'GET'
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2013-05-21 17:42:15 +08:00
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self.assertIsInstance(my_safe_view(request), HttpResponse)
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2011-04-28 21:04:16 +08:00
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request.method = 'HEAD'
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2013-05-21 17:42:15 +08:00
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self.assertIsInstance(my_safe_view(request), HttpResponse)
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2011-04-28 21:04:16 +08:00
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request.method = 'POST'
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2013-05-21 17:42:15 +08:00
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self.assertIsInstance(my_safe_view(request), HttpResponseNotAllowed)
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2011-04-28 21:04:16 +08:00
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request.method = 'PUT'
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2013-05-21 17:42:15 +08:00
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self.assertIsInstance(my_safe_view(request), HttpResponseNotAllowed)
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2011-04-28 21:04:16 +08:00
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request.method = 'DELETE'
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2013-05-21 17:42:15 +08:00
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self.assertIsInstance(my_safe_view(request), HttpResponseNotAllowed)
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2011-04-28 21:04:16 +08:00
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2010-02-09 23:02:39 +08:00
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# For testing method_decorator, a decorator that assumes a single argument.
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# We will get type arguments if there is a mismatch in the number of arguments.
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def simple_dec(func):
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def wrapper(arg):
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return func("test:" + arg)
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return wraps(func)(wrapper)
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simple_dec_m = method_decorator(simple_dec)
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2010-10-21 22:56:49 +08:00
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# For testing method_decorator, two decorators that add an attribute to the function
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def myattr_dec(func):
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def wrapper(*args, **kwargs):
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return func(*args, **kwargs)
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wrapper.myattr = True
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return wraps(func)(wrapper)
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myattr_dec_m = method_decorator(myattr_dec)
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def myattr2_dec(func):
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def wrapper(*args, **kwargs):
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return func(*args, **kwargs)
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wrapper.myattr2 = True
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return wraps(func)(wrapper)
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myattr2_dec_m = method_decorator(myattr2_dec)
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2014-02-09 19:13:10 +08:00
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2013-11-26 20:00:50 +08:00
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class ClsDec(object):
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def __init__(self, myattr):
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self.myattr = myattr
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def __call__(self, f):
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def wrapped():
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return f() and self.myattr
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return update_wrapper(wrapped, f)
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2010-10-21 22:56:49 +08:00
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2015-07-22 04:54:37 +08:00
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class MethodDecoratorTests(SimpleTestCase):
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2010-02-09 23:02:39 +08:00
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"""
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Tests for method_decorator
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"""
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2010-10-21 22:56:49 +08:00
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def test_preserve_signature(self):
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2010-02-09 23:02:39 +08:00
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class Test(object):
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@simple_dec_m
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def say(self, arg):
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return arg
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self.assertEqual("test:hello", Test().say("hello"))
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2010-10-21 22:56:49 +08:00
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def test_preserve_attributes(self):
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# Sanity check myattr_dec and myattr2_dec
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@myattr_dec
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@myattr2_dec
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def func():
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pass
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self.assertEqual(getattr(func, 'myattr', False), True)
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self.assertEqual(getattr(func, 'myattr2', False), True)
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2015-08-11 19:35:50 +08:00
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# Decorate using method_decorator() on the method.
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class TestPlain(object):
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2010-10-21 22:56:49 +08:00
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@myattr_dec_m
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@myattr2_dec_m
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def method(self):
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"A method"
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pass
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2015-08-11 19:35:50 +08:00
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# Decorate using method_decorator() on both the class and the method.
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# The decorators applied to the methods are applied before the ones
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# applied to the class.
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@method_decorator(myattr_dec_m, "method")
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class TestMethodAndClass(object):
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@method_decorator(myattr2_dec_m)
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def method(self):
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"A method"
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pass
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2010-10-21 22:56:49 +08:00
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2015-08-11 19:35:50 +08:00
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# Decorate using an iterable of decorators.
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decorators = (myattr_dec_m, myattr2_dec_m)
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2010-10-21 22:56:49 +08:00
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2015-08-11 19:35:50 +08:00
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@method_decorator(decorators, "method")
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class TestIterable(object):
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def method(self):
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"A method"
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pass
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for Test in (TestPlain, TestMethodAndClass, TestIterable):
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self.assertEqual(getattr(Test().method, 'myattr', False), True)
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self.assertEqual(getattr(Test().method, 'myattr2', False), True)
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self.assertEqual(getattr(Test.method, 'myattr', False), True)
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self.assertEqual(getattr(Test.method, 'myattr2', False), True)
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self.assertEqual(Test.method.__doc__, 'A method')
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self.assertEqual(Test.method.__name__, 'method')
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def test_bad_iterable(self):
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decorators = {myattr_dec_m, myattr2_dec_m}
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# The rest of the exception message differs between Python 2 and 3.
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with self.assertRaisesMessage(TypeError, "'set' object"):
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@method_decorator(decorators, "method")
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class TestIterable(object):
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def method(self):
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"A method"
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pass
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2011-05-31 06:27:47 +08:00
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2013-11-26 20:00:50 +08:00
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# Test for argumented decorator
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def test_argumented(self):
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class Test(object):
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@method_decorator(ClsDec(False))
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def method(self):
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return True
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self.assertEqual(Test().method(), False)
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2014-02-09 19:13:10 +08:00
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2014-02-09 19:10:05 +08:00
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def test_descriptors(self):
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def original_dec(wrapped):
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def _wrapped(arg):
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return wrapped(arg)
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return _wrapped
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method_dec = method_decorator(original_dec)
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class bound_wrapper(object):
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def __init__(self, wrapped):
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self.wrapped = wrapped
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self.__name__ = wrapped.__name__
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def __call__(self, arg):
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return self.wrapped(arg)
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def __get__(self, instance, owner):
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return self
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class descriptor_wrapper(object):
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def __init__(self, wrapped):
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self.wrapped = wrapped
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self.__name__ = wrapped.__name__
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def __get__(self, instance, owner):
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return bound_wrapper(self.wrapped.__get__(instance, owner))
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class Test(object):
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@method_dec
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@descriptor_wrapper
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def method(self, arg):
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return arg
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self.assertEqual(Test().method(1), 1)
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2015-07-22 04:54:37 +08:00
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def test_class_decoration(self):
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"""
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@method_decorator can be used to decorate a class and its methods.
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"""
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def deco(func):
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def _wrapper(*args, **kwargs):
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return True
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return _wrapper
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@method_decorator(deco, name="method")
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class Test(object):
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def method(self):
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return False
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self.assertTrue(Test().method())
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2015-08-11 19:35:50 +08:00
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def test_tuple_of_decorators(self):
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"""
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@method_decorator can accept a tuple of decorators.
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"""
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def add_question_mark(func):
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def _wrapper(*args, **kwargs):
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return func(*args, **kwargs) + "?"
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return _wrapper
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def add_exclamation_mark(func):
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def _wrapper(*args, **kwargs):
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return func(*args, **kwargs) + "!"
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return _wrapper
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# The order should be consistent with the usual order in which
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# decorators are applied, e.g.
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# @add_exclamation_mark
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# @add_question_mark
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# def func():
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# ...
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decorators = (add_exclamation_mark, add_question_mark)
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|
@method_decorator(decorators, name="method")
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class TestFirst(object):
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def method(self):
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return "hello world"
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class TestSecond(object):
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@method_decorator(decorators)
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|
def method(self):
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return "hello world"
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self.assertEqual(TestFirst().method(), "hello world?!")
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self.assertEqual(TestSecond().method(), "hello world?!")
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|
|
2015-07-22 04:54:37 +08:00
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|
def test_invalid_non_callable_attribute_decoration(self):
|
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|
|
"""
|
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|
|
@method_decorator on a non-callable attribute raises an error.
|
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|
|
|
"""
|
|
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|
|
msg = (
|
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|
|
"Cannot decorate 'prop' as it isn't a callable attribute of "
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|
|
|
|
"<class 'Test'> (1)"
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|
|
)
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|
|
with self.assertRaisesMessage(TypeError, msg):
|
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|
|
|
@method_decorator(lambda: None, name="prop")
|
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|
|
|
class Test(object):
|
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|
|
prop = 1
|
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|
|
|
@classmethod
|
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|
|
|
def __module__(cls):
|
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|
|
|
return "tests"
|
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|
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|
|
|
|
def test_invalid_method_name_to_decorate(self):
|
|
|
|
|
"""
|
|
|
|
|
@method_decorator on a nonexistent method raises an error.
|
|
|
|
|
"""
|
|
|
|
|
msg = (
|
|
|
|
|
"The keyword argument `name` must be the name of a method of the "
|
|
|
|
|
"decorated class: <class 'Test'>. Got 'non_existing_method' instead"
|
|
|
|
|
)
|
|
|
|
|
with self.assertRaisesMessage(ValueError, msg):
|
|
|
|
|
@method_decorator(lambda: None, name="non_existing_method")
|
|
|
|
|
class Test(object):
|
|
|
|
|
@classmethod
|
|
|
|
|
def __module__(cls):
|
|
|
|
|
return "tests"
|
|
|
|
|
|
2011-05-31 06:27:47 +08:00
|
|
|
|
|
|
|
|
class XFrameOptionsDecoratorsTests(TestCase):
|
|
|
|
|
"""
|
|
|
|
|
Tests for the X-Frame-Options decorators.
|
|
|
|
|
"""
|
|
|
|
|
def test_deny_decorator(self):
|
|
|
|
|
"""
|
|
|
|
|
Ensures @xframe_options_deny properly sets the X-Frame-Options header.
|
|
|
|
|
"""
|
|
|
|
|
@xframe_options_deny
|
|
|
|
|
def a_view(request):
|
|
|
|
|
return HttpResponse()
|
|
|
|
|
r = a_view(HttpRequest())
|
|
|
|
|
self.assertEqual(r['X-Frame-Options'], 'DENY')
|
|
|
|
|
|
|
|
|
|
def test_sameorigin_decorator(self):
|
|
|
|
|
"""
|
|
|
|
|
Ensures @xframe_options_sameorigin properly sets the X-Frame-Options
|
|
|
|
|
header.
|
|
|
|
|
"""
|
|
|
|
|
@xframe_options_sameorigin
|
|
|
|
|
def a_view(request):
|
|
|
|
|
return HttpResponse()
|
|
|
|
|
r = a_view(HttpRequest())
|
|
|
|
|
self.assertEqual(r['X-Frame-Options'], 'SAMEORIGIN')
|
|
|
|
|
|
|
|
|
|
def test_exempt_decorator(self):
|
|
|
|
|
"""
|
|
|
|
|
Ensures @xframe_options_exempt properly instructs the
|
|
|
|
|
XFrameOptionsMiddleware to NOT set the header.
|
|
|
|
|
"""
|
|
|
|
|
@xframe_options_exempt
|
|
|
|
|
def a_view(request):
|
|
|
|
|
return HttpResponse()
|
|
|
|
|
req = HttpRequest()
|
|
|
|
|
resp = a_view(req)
|
|
|
|
|
self.assertEqual(resp.get('X-Frame-Options', None), None)
|
|
|
|
|
self.assertTrue(resp.xframe_options_exempt)
|
|
|
|
|
|
|
|
|
|
# Since the real purpose of the exempt decorator is to suppress
|
|
|
|
|
# the middleware's functionality, let's make sure it actually works...
|
|
|
|
|
r = XFrameOptionsMiddleware().process_response(req, resp)
|
|
|
|
|
self.assertEqual(r.get('X-Frame-Options', None), None)
|
2015-04-28 05:56:02 +08:00
|
|
|
|
|
|
|
|
|
|
|
|
|
class NeverCacheDecoratorTest(TestCase):
|
|
|
|
|
def test_never_cache_decorator(self):
|
|
|
|
|
@never_cache
|
|
|
|
|
def a_view(request):
|
|
|
|
|
return HttpResponse()
|
|
|
|
|
r = a_view(HttpRequest())
|
|
|
|
|
self.assertEqual(
|
|
|
|
|
set(r['Cache-Control'].split(', ')),
|
|
|
|
|
{'max-age=0', 'no-cache', 'no-store', 'must-revalidate'},
|
|
|
|
|
)
|
