from unittest import TestCase from sys import version_info try: from functools import wraps except ImportError: from django.utils.functional import wraps # Python 2.4 fallback. from django.http import HttpResponse, HttpRequest from django.utils.functional import allow_lazy, lazy, memoize from django.views.decorators.http import require_http_methods, require_GET, require_POST from django.views.decorators.vary import vary_on_headers, vary_on_cookie from django.views.decorators.cache import cache_page, never_cache, cache_control from django.utils.decorators import method_decorator from django.contrib.auth.decorators import login_required, permission_required, user_passes_test from django.contrib.admin.views.decorators import staff_member_required def fully_decorated(request): """Expected __doc__""" return HttpResponse('dummy') fully_decorated.anything = "Expected __dict__" # django.views.decorators.http fully_decorated = require_http_methods(["GET"])(fully_decorated) fully_decorated = require_GET(fully_decorated) fully_decorated = require_POST(fully_decorated) # django.views.decorators.vary fully_decorated = vary_on_headers('Accept-language')(fully_decorated) fully_decorated = vary_on_cookie(fully_decorated) # django.views.decorators.cache fully_decorated = cache_page(60*15)(fully_decorated) fully_decorated = cache_control(private=True)(fully_decorated) fully_decorated = never_cache(fully_decorated) # django.contrib.auth.decorators # Apply user_passes_test twice to check #9474 fully_decorated = user_passes_test(lambda u:True)(fully_decorated) fully_decorated = login_required(fully_decorated) fully_decorated = permission_required('change_world')(fully_decorated) # django.contrib.admin.views.decorators fully_decorated = staff_member_required(fully_decorated) # django.utils.functional fully_decorated = memoize(fully_decorated, {}, 1) fully_decorated = allow_lazy(fully_decorated) fully_decorated = lazy(fully_decorated) class DecoratorsTest(TestCase): def test_attributes(self): """ Tests that django decorators set certain attributes of the wrapped function. """ # Only check __name__ on Python 2.4 or later since __name__ can't be # assigned to in earlier Python versions. if version_info[0] >= 2 and version_info[1] >= 4: self.assertEquals(fully_decorated.__name__, 'fully_decorated') self.assertEquals(fully_decorated.__doc__, 'Expected __doc__') self.assertEquals(fully_decorated.__dict__['anything'], 'Expected __dict__') def test_user_passes_test_composition(self): """ Test that the user_passes_test decorator can be applied multiple times (#9474). """ def test1(user): user.decorators_applied.append('test1') return True def test2(user): user.decorators_applied.append('test2') return True def callback(request): return request.user.decorators_applied callback = user_passes_test(test1)(callback) callback = user_passes_test(test2)(callback) class DummyUser(object): pass class DummyRequest(object): pass request = DummyRequest() request.user = DummyUser() request.user.decorators_applied = [] response = callback(request) self.assertEqual(response, ['test2', 'test1']) def test_cache_page_new_style(self): """ Test that we can call cache_page the new way """ def my_view(request): return "response" my_view_cached = cache_page(123)(my_view) self.assertEqual(my_view_cached(HttpRequest()), "response") my_view_cached2 = cache_page(123, key_prefix="test")(my_view) self.assertEqual(my_view_cached2(HttpRequest()), "response") def test_cache_page_old_style(self): """ Test that we can call cache_page the old way """ def my_view(request): return "response" my_view_cached = cache_page(my_view, 123) self.assertEqual(my_view_cached(HttpRequest()), "response") my_view_cached2 = cache_page(my_view, 123, key_prefix="test") self.assertEqual(my_view_cached2(HttpRequest()), "response") my_view_cached3 = cache_page(my_view) self.assertEqual(my_view_cached3(HttpRequest()), "response") my_view_cached4 = cache_page()(my_view) self.assertEqual(my_view_cached4(HttpRequest()), "response") # For testing method_decorator, a decorator that assumes a single argument. # We will get type arguments if there is a mismatch in the number of arguments. def simple_dec(func): def wrapper(arg): return func("test:" + arg) return wraps(func)(wrapper) simple_dec_m = method_decorator(simple_dec) class MethodDecoratorTests(TestCase): """ Tests for method_decorator """ def test_method_decorator(self): class Test(object): @simple_dec_m def say(self, arg): return arg self.assertEqual("test:hello", Test().say("hello"))