""" Unit tests for reverse URL lookups. """ import sys import threading from admin_scripts.tests import AdminScriptTestCase from django.conf import settings from django.conf.urls import include, url from django.contrib.auth.models import User from django.core.exceptions import ImproperlyConfigured, ViewDoesNotExist from django.http import ( HttpRequest, HttpResponsePermanentRedirect, HttpResponseRedirect, ) from django.shortcuts import redirect from django.test import SimpleTestCase, TestCase, override_settings from django.test.utils import override_script_prefix from django.urls import ( NoReverseMatch, RegexURLPattern, RegexURLResolver, Resolver404, ResolverMatch, get_callable, get_resolver, resolve, reverse, reverse_lazy, ) from . import middleware, urlconf_outer, views from .utils import URLObject from .views import empty_view resolve_test_data = ( # These entries are in the format: (path, url_name, app_name, namespace, view_name, func, args, kwargs) # Simple case ('/normal/42/37/', 'normal-view', '', '', 'normal-view', views.empty_view, tuple(), {'arg1': '42', 'arg2': '37'}), ( '/view_class/42/37/', 'view-class', '', '', 'view-class', views.view_class_instance, tuple(), {'arg1': '42', 'arg2': '37'} ), ( '/included/normal/42/37/', 'inc-normal-view', 'included_namespace_urls', 'included_namespace_urls', 'included_namespace_urls:inc-normal-view', views.empty_view, tuple(), {'arg1': '42', 'arg2': '37'} ), ( '/included/view_class/42/37/', 'inc-view-class', 'included_namespace_urls', 'included_namespace_urls', 'included_namespace_urls:inc-view-class', views.view_class_instance, tuple(), {'arg1': '42', 'arg2': '37'} ), # Unnamed args are dropped if you have *any* kwargs in a pattern ('/mixed_args/42/37/', 'mixed-args', '', '', 'mixed-args', views.empty_view, tuple(), {'arg2': '37'}), ( '/included/mixed_args/42/37/', 'inc-mixed-args', 'included_namespace_urls', 'included_namespace_urls', 'included_namespace_urls:inc-mixed-args', views.empty_view, tuple(), {'arg2': '37'} ), ( '/included/12/mixed_args/42/37/', 'inc-mixed-args', 'included_namespace_urls', 'included_namespace_urls', 'included_namespace_urls:inc-mixed-args', views.empty_view, tuple(), {'arg2': '37'} ), # Unnamed views should have None as the url_name. Regression data for #21157. ( '/unnamed/normal/42/37/', None, '', '', 'urlpatterns_reverse.views.empty_view', views.empty_view, tuple(), {'arg1': '42', 'arg2': '37'} ), ( '/unnamed/view_class/42/37/', None, '', '', 'urlpatterns_reverse.views.ViewClass', views.view_class_instance, tuple(), {'arg1': '42', 'arg2': '37'} ), # If you have no kwargs, you get an args list. ('/no_kwargs/42/37/', 'no-kwargs', '', '', 'no-kwargs', views.empty_view, ('42', '37'), {}), ( '/included/no_kwargs/42/37/', 'inc-no-kwargs', 'included_namespace_urls', 'included_namespace_urls', 'included_namespace_urls:inc-no-kwargs', views.empty_view, ('42', '37'), {} ), ( '/included/12/no_kwargs/42/37/', 'inc-no-kwargs', 'included_namespace_urls', 'included_namespace_urls', 'included_namespace_urls:inc-no-kwargs', views.empty_view, ('12', '42', '37'), {} ), # Namespaces ( '/test1/inner/42/37/', 'urlobject-view', 'testapp', 'test-ns1', 'test-ns1:urlobject-view', views.empty_view, tuple(), {'arg1': '42', 'arg2': '37'} ), ( '/included/test3/inner/42/37/', 'urlobject-view', 'included_namespace_urls:testapp', 'included_namespace_urls:test-ns3', 'included_namespace_urls:test-ns3:urlobject-view', views.empty_view, tuple(), {'arg1': '42', 'arg2': '37'} ), ( '/ns-included1/normal/42/37/', 'inc-normal-view', 'included_namespace_urls', 'inc-ns1', 'inc-ns1:inc-normal-view', views.empty_view, tuple(), {'arg1': '42', 'arg2': '37'} ), ( '/included/test3/inner/42/37/', 'urlobject-view', 'included_namespace_urls:testapp', 'included_namespace_urls:test-ns3', 'included_namespace_urls:test-ns3:urlobject-view', views.empty_view, tuple(), {'arg1': '42', 'arg2': '37'} ), ( '/default/inner/42/37/', 'urlobject-view', 'testapp', 'testapp', 'testapp:urlobject-view', views.empty_view, tuple(), {'arg1': '42', 'arg2': '37'} ), ( '/other2/inner/42/37/', 'urlobject-view', 'nodefault', 'other-ns2', 'other-ns2:urlobject-view', views.empty_view, tuple(), {'arg1': '42', 'arg2': '37'} ), ( '/other1/inner/42/37/', 'urlobject-view', 'nodefault', 'other-ns1', 'other-ns1:urlobject-view', views.empty_view, tuple(), {'arg1': '42', 'arg2': '37'} ), # Nested namespaces ( '/ns-included1/test3/inner/42/37/', 'urlobject-view', 'included_namespace_urls:testapp', 'inc-ns1:test-ns3', 'inc-ns1:test-ns3:urlobject-view', views.empty_view, tuple(), {'arg1': '42', 'arg2': '37'} ), ( '/ns-included1/ns-included4/ns-included2/test3/inner/42/37/', 'urlobject-view', 'included_namespace_urls:namespace_urls:included_namespace_urls:testapp', 'inc-ns1:inc-ns4:inc-ns2:test-ns3', 'inc-ns1:inc-ns4:inc-ns2:test-ns3:urlobject-view', views.empty_view, tuple(), {'arg1': '42', 'arg2': '37'} ), ( '/app-included/test3/inner/42/37/', 'urlobject-view', 'included_namespace_urls:testapp', 'inc-app:test-ns3', 'inc-app:test-ns3:urlobject-view', views.empty_view, tuple(), {'arg1': '42', 'arg2': '37'} ), ( '/app-included/ns-included4/ns-included2/test3/inner/42/37/', 'urlobject-view', 'included_namespace_urls:namespace_urls:included_namespace_urls:testapp', 'inc-app:inc-ns4:inc-ns2:test-ns3', 'inc-app:inc-ns4:inc-ns2:test-ns3:urlobject-view', views.empty_view, tuple(), {'arg1': '42', 'arg2': '37'} ), # Namespaces capturing variables ( '/inc70/', 'inner-nothing', 'included_urls', 'inc-ns5', 'inc-ns5:inner-nothing', views.empty_view, tuple(), {'outer': '70'} ), ( '/inc78/extra/foobar/', 'inner-extra', 'included_urls', 'inc-ns5', 'inc-ns5:inner-extra', views.empty_view, tuple(), {'outer': '78', 'extra': 'foobar'} ), ) test_data = ( ('places', '/places/3/', [3], {}), ('places', '/places/3/', ['3'], {}), ('places', NoReverseMatch, ['a'], {}), ('places', NoReverseMatch, [], {}), ('places?', '/place/', [], {}), ('places+', '/places/', [], {}), ('places*', '/place/', [], {}), ('places2?', '/', [], {}), ('places2+', '/places/', [], {}), ('places2*', '/', [], {}), ('places3', '/places/4/', [4], {}), ('places3', '/places/harlem/', ['harlem'], {}), ('places3', NoReverseMatch, ['harlem64'], {}), ('places4', '/places/3/', [], {'id': 3}), ('people', NoReverseMatch, [], {}), ('people', '/people/adrian/', ['adrian'], {}), ('people', '/people/adrian/', [], {'name': 'adrian'}), ('people', NoReverseMatch, ['name with spaces'], {}), ('people', NoReverseMatch, [], {'name': 'name with spaces'}), ('people2', '/people/name/', [], {}), ('people2a', '/people/name/fred/', ['fred'], {}), ('people_backref', '/people/nate-nate/', ['nate'], {}), ('people_backref', '/people/nate-nate/', [], {'name': 'nate'}), ('optional', '/optional/fred/', [], {'name': 'fred'}), ('optional', '/optional/fred/', ['fred'], {}), ('named_optional', '/optional/1/', [1], {}), ('named_optional', '/optional/1/', [], {'arg1': 1}), ('named_optional', '/optional/1/2/', [1, 2], {}), ('named_optional', '/optional/1/2/', [], {'arg1': 1, 'arg2': 2}), ('named_optional_terminated', '/optional/1/2/', [1, 2], {}), ('named_optional_terminated', '/optional/1/2/', [], {'arg1': 1, 'arg2': 2}), ('hardcoded', '/hardcoded/', [], {}), ('hardcoded2', '/hardcoded/doc.pdf', [], {}), ('people3', '/people/il/adrian/', [], {'state': 'il', 'name': 'adrian'}), ('people3', NoReverseMatch, [], {'state': 'il'}), ('people3', NoReverseMatch, [], {'name': 'adrian'}), ('people4', NoReverseMatch, [], {'state': 'il', 'name': 'adrian'}), ('people6', '/people/il/test/adrian/', ['il/test', 'adrian'], {}), ('people6', '/people//adrian/', ['adrian'], {}), ('range', '/character_set/a/', [], {}), ('range2', '/character_set/x/', [], {}), ('price', '/price/$10/', ['10'], {}), ('price2', '/price/$10/', ['10'], {}), ('price3', '/price/$10/', ['10'], {}), ('product', '/product/chocolate+($2.00)/', [], {'price': '2.00', 'product': 'chocolate'}), ('headlines', '/headlines/2007.5.21/', [], dict(year=2007, month=5, day=21)), ( 'windows', r'/windows_path/C:%5CDocuments%20and%20Settings%5Cspam/', [], dict(drive_name='C', path=r'Documents and Settings\spam') ), ('special', r'/special_chars/~@+%5C$*%7C/', [r'~@+\$*|'], {}), ('special', r'/special_chars/some%20resource/', [r'some resource'], {}), ('special', r'/special_chars/10%25%20complete/', [r'10% complete'], {}), ('special', r'/special_chars/some%20resource/', [], {'chars': r'some resource'}), ('special', r'/special_chars/10%25%20complete/', [], {'chars': r'10% complete'}), ('special', NoReverseMatch, [''], {}), ('mixed', '/john/0/', [], {'name': 'john'}), ('repeats', '/repeats/a/', [], {}), ('repeats2', '/repeats/aa/', [], {}), ('repeats3', '/repeats/aa/', [], {}), ('test', '/test/1', [], {}), ('inner-nothing', '/outer/42/', [], {'outer': '42'}), ('inner-nothing', '/outer/42/', ['42'], {}), ('inner-nothing', NoReverseMatch, ['foo'], {}), ('inner-extra', '/outer/42/extra/inner/', [], {'extra': 'inner', 'outer': '42'}), ('inner-extra', '/outer/42/extra/inner/', ['42', 'inner'], {}), ('inner-extra', NoReverseMatch, ['fred', 'inner'], {}), ('inner-no-kwargs', '/outer-no-kwargs/42/inner-no-kwargs/1/', ['42', '1'], {}), ('disjunction', NoReverseMatch, ['foo'], {}), ('inner-disjunction', NoReverseMatch, ['10', '11'], {}), ('extra-places', '/e-places/10/', ['10'], {}), ('extra-people', '/e-people/fred/', ['fred'], {}), ('extra-people', '/e-people/fred/', [], {'name': 'fred'}), ('part', '/part/one/', [], {'value': 'one'}), ('part', '/prefix/xx/part/one/', [], {'value': 'one', 'prefix': 'xx'}), ('part2', '/part2/one/', [], {'value': 'one'}), ('part2', '/part2/', [], {}), ('part2', '/prefix/xx/part2/one/', [], {'value': 'one', 'prefix': 'xx'}), ('part2', '/prefix/xx/part2/', [], {'prefix': 'xx'}), # Tests for nested groups. Nested capturing groups will only work if you # *only* supply the correct outer group. ('nested-noncapture', '/nested/noncapture/opt', [], {'p': 'opt'}), ('nested-capture', '/nested/capture/opt/', ['opt/'], {}), ('nested-capture', NoReverseMatch, [], {'p': 'opt'}), ('nested-mixedcapture', '/nested/capture/mixed/opt', ['opt'], {}), ('nested-mixedcapture', NoReverseMatch, [], {'p': 'opt'}), ('nested-namedcapture', '/nested/capture/named/opt/', [], {'outer': 'opt/'}), ('nested-namedcapture', NoReverseMatch, [], {'outer': 'opt/', 'inner': 'opt'}), ('nested-namedcapture', NoReverseMatch, [], {'inner': 'opt'}), ('non_path_include', '/includes/non_path_include/', [], {}), # Tests for #13154 ('defaults', '/defaults_view1/3/', [], {'arg1': 3, 'arg2': 1}), ('defaults', '/defaults_view2/3/', [], {'arg1': 3, 'arg2': 2}), ('defaults', NoReverseMatch, [], {'arg1': 3, 'arg2': 3}), ('defaults', NoReverseMatch, [], {'arg2': 1}), # Security tests ('security', '/%2Fexample.com/security/', ['/example.com'], {}), ) @override_settings(ROOT_URLCONF='urlpatterns_reverse.no_urls') class NoURLPatternsTests(SimpleTestCase): def test_no_urls_exception(self): """ RegexURLResolver should raise an exception when no urlpatterns exist. """ resolver = RegexURLResolver(r'^$', settings.ROOT_URLCONF) with self.assertRaisesMessage( ImproperlyConfigured, "The included URLconf 'urlpatterns_reverse.no_urls' does not " "appear to have any patterns in it. If you see valid patterns in " "the file then the issue is probably caused by a circular import." ): getattr(resolver, 'url_patterns') @override_settings(ROOT_URLCONF='urlpatterns_reverse.urls') class URLPatternReverse(SimpleTestCase): def test_urlpattern_reverse(self): for name, expected, args, kwargs in test_data: try: got = reverse(name, args=args, kwargs=kwargs) except NoReverseMatch: self.assertEqual(expected, NoReverseMatch) else: self.assertEqual(got, expected) def test_reverse_none(self): # Reversing None should raise an error, not return the last un-named view. with self.assertRaises(NoReverseMatch): reverse(None) @override_script_prefix('/{{invalid}}/') def test_prefix_braces(self): self.assertEqual( '/%7B%7Binvalid%7D%7D/includes/non_path_include/', reverse('non_path_include') ) def test_prefix_parenthesis(self): # Parentheses are allowed and should not cause errors or be escaped with override_script_prefix('/bogus)/'): self.assertEqual( '/bogus)/includes/non_path_include/', reverse('non_path_include') ) with override_script_prefix('/(bogus)/'): self.assertEqual( '/(bogus)/includes/non_path_include/', reverse('non_path_include') ) @override_script_prefix('/bump%20map/') def test_prefix_format_char(self): self.assertEqual( '/bump%2520map/includes/non_path_include/', reverse('non_path_include') ) @override_script_prefix('/%7Eme/') def test_non_urlsafe_prefix_with_args(self): # Regression for #20022, adjusted for #24013 because ~ is an unreserved # character. Tests whether % is escaped. self.assertEqual('/%257Eme/places/1/', reverse('places', args=[1])) def test_patterns_reported(self): # Regression for #17076 with self.assertRaisesMessage(NoReverseMatch, r"1 pattern(s) tried: ['people/(?P\\w+)/$']"): # this url exists, but requires an argument reverse("people", args=[]) @override_script_prefix('/script:name/') def test_script_name_escaping(self): self.assertEqual( reverse('optional', args=['foo:bar']), '/script:name/optional/foo:bar/' ) def test_view_not_found_message(self): msg = ( "Reverse for 'nonexistent-view' not found. 'nonexistent-view' " "is not a valid view function or pattern name." ) with self.assertRaisesMessage(NoReverseMatch, msg): reverse('nonexistent-view') def test_no_args_message(self): msg = "Reverse for 'places' with no arguments not found. 1 pattern(s) tried:" with self.assertRaisesMessage(NoReverseMatch, msg): reverse('places') def test_illegal_args_message(self): msg = "Reverse for 'places' with arguments '(1, 2)' not found. 1 pattern(s) tried:" with self.assertRaisesMessage(NoReverseMatch, msg): reverse('places', args=(1, 2)) def test_illegal_kwargs_message(self): msg = "Reverse for 'places' with keyword arguments '{'arg1': 2}' not found. 1 pattern(s) tried:" with self.assertRaisesMessage(NoReverseMatch, msg): reverse('places', kwargs={'arg1': 2}) class ResolverTests(SimpleTestCase): def test_resolver_repr(self): """ Test repr of RegexURLResolver, especially when urlconf_name is a list (#17892). """ # Pick a resolver from a namespaced URLconf resolver = get_resolver('urlpatterns_reverse.namespace_urls') sub_resolver = resolver.namespace_dict['test-ns1'][1] self.assertIn('', repr(sub_resolver)) def test_reverse_lazy_object_coercion_by_resolve(self): """ Verifies lazy object returned by reverse_lazy is coerced to text by resolve(). Previous to #21043, this would raise a TypeError. """ urls = 'urlpatterns_reverse.named_urls' proxy_url = reverse_lazy('named-url1', urlconf=urls) resolver = get_resolver(urls) resolver.resolve(proxy_url) def test_resolver_reverse(self): resolver = get_resolver('urlpatterns_reverse.named_urls') self.assertEqual(resolver.reverse('named-url1'), '') self.assertEqual(resolver.reverse('named-url2', 'arg'), 'extra/arg/') self.assertEqual(resolver.reverse('named-url2', extra='arg'), 'extra/arg/') def test_resolver_reverse_conflict(self): """ url() name arguments don't need to be unique. The last registered pattern takes precedence for conflicting names. """ resolver = get_resolver('urlpatterns_reverse.named_urls_conflict') # Without arguments, the last URL in urlpatterns has precedence. self.assertEqual(resolver.reverse('name-conflict'), 'conflict/') # With an arg, the last URL in urlpatterns has precedence. self.assertEqual(resolver.reverse('name-conflict', 'arg'), 'conflict-last/arg/') # With a kwarg, other url()s can be reversed. self.assertEqual(resolver.reverse('name-conflict', first='arg'), 'conflict-first/arg/') self.assertEqual(resolver.reverse('name-conflict', middle='arg'), 'conflict-middle/arg/') self.assertEqual(resolver.reverse('name-conflict', last='arg'), 'conflict-last/arg/') # The number and order of the arguments don't interfere with reversing. self.assertEqual(resolver.reverse('name-conflict', 'arg', 'arg'), 'conflict/arg/arg/') def test_non_regex(self): """ A Resolver404 is raised if resolving doesn't meet the basic requirements of a path to match - i.e., at the very least, it matches the root pattern '^/'. Never return None from resolve() to prevent a TypeError from occurring later (#10834). """ with self.assertRaises(Resolver404): resolve('') with self.assertRaises(Resolver404): resolve('a') with self.assertRaises(Resolver404): resolve('\\') with self.assertRaises(Resolver404): resolve('.') def test_404_tried_urls_have_names(self): """ The list of URLs that come back from a Resolver404 exception contains a list in the right format for printing out in the DEBUG 404 page with both the patterns and URL names, if available. """ urls = 'urlpatterns_reverse.named_urls' # this list matches the expected URL types and names returned when # you try to resolve a nonexistent URL in the first level of included # URLs in named_urls.py (e.g., '/included/nonexistent-url') url_types_names = [ [{'type': RegexURLPattern, 'name': 'named-url1'}], [{'type': RegexURLPattern, 'name': 'named-url2'}], [{'type': RegexURLPattern, 'name': None}], [{'type': RegexURLResolver}, {'type': RegexURLPattern, 'name': 'named-url3'}], [{'type': RegexURLResolver}, {'type': RegexURLPattern, 'name': 'named-url4'}], [{'type': RegexURLResolver}, {'type': RegexURLPattern, 'name': None}], [{'type': RegexURLResolver}, {'type': RegexURLResolver}], ] with self.assertRaisesMessage(Resolver404, 'tried') as cm: resolve('/included/nonexistent-url', urlconf=urls) e = cm.exception # make sure we at least matched the root ('/') url resolver: self.assertIn('tried', e.args[0]) self.assertEqual( len(e.args[0]['tried']), len(url_types_names), 'Wrong number of tried URLs returned. Expected %s, got %s.' % ( len(url_types_names), len(e.args[0]['tried']) ) ) for tried, expected in zip(e.args[0]['tried'], url_types_names): for t, e in zip(tried, expected): self.assertIsInstance(t, e['type']), '%s is not an instance of %s' % (t, e['type']) if 'name' in e: if not e['name']: self.assertIsNone(t.name, 'Expected no URL name but found %s.' % t.name) else: self.assertEqual( t.name, e['name'], 'Wrong URL name. Expected "%s", got "%s".' % (e['name'], t.name) ) def test_namespaced_view_detail(self): resolver = get_resolver('urlpatterns_reverse.nested_urls') self.assertTrue(resolver._is_callback('urlpatterns_reverse.nested_urls.view1')) self.assertTrue(resolver._is_callback('urlpatterns_reverse.nested_urls.view2')) self.assertTrue(resolver._is_callback('urlpatterns_reverse.nested_urls.View3')) self.assertFalse(resolver._is_callback('urlpatterns_reverse.nested_urls.blub')) def test_view_detail_as_method(self): # Views which have a class name as part of their path. resolver = get_resolver('urlpatterns_reverse.method_view_urls') self.assertTrue(resolver._is_callback('urlpatterns_reverse.method_view_urls.ViewContainer.method_view')) self.assertTrue(resolver._is_callback('urlpatterns_reverse.method_view_urls.ViewContainer.classmethod_view')) def test_populate_concurrency(self): """ RegexURLResolver._populate() can be called concurrently, but not more than once per thread (#26888). """ resolver = RegexURLResolver(r'^/', 'urlpatterns_reverse.urls') resolver._local.populating = True thread = threading.Thread(target=resolver._populate) thread.start() thread.join() self.assertNotEqual(resolver._reverse_dict, {}) @override_settings(ROOT_URLCONF='urlpatterns_reverse.reverse_lazy_urls') class ReverseLazyTest(TestCase): def test_redirect_with_lazy_reverse(self): response = self.client.get('/redirect/') self.assertRedirects(response, "/redirected_to/", status_code=302) def test_user_permission_with_lazy_reverse(self): alfred = User.objects.create_user('alfred', 'alfred@example.com', password='testpw') response = self.client.get('/login_required_view/') self.assertRedirects(response, "/login/?next=/login_required_view/", status_code=302) self.client.force_login(alfred) response = self.client.get('/login_required_view/') self.assertEqual(response.status_code, 200) def test_inserting_reverse_lazy_into_string(self): self.assertEqual( 'Some URL: %s' % reverse_lazy('some-login-page'), 'Some URL: /login/' ) class ReverseLazySettingsTest(AdminScriptTestCase): """ reverse_lazy can be used in settings without causing a circular import error. """ def setUp(self): self.write_settings('settings.py', extra=""" from django.urls import reverse_lazy LOGIN_URL = reverse_lazy('login')""") def tearDown(self): self.remove_settings('settings.py') def test_lazy_in_settings(self): out, err = self.run_manage(['check']) self.assertNoOutput(err) @override_settings(ROOT_URLCONF='urlpatterns_reverse.urls') class ReverseShortcutTests(SimpleTestCase): def test_redirect_to_object(self): # We don't really need a model; just something with a get_absolute_url class FakeObj: def get_absolute_url(self): return "/hi-there/" res = redirect(FakeObj()) self.assertIsInstance(res, HttpResponseRedirect) self.assertEqual(res.url, '/hi-there/') res = redirect(FakeObj(), permanent=True) self.assertIsInstance(res, HttpResponsePermanentRedirect) self.assertEqual(res.url, '/hi-there/') def test_redirect_to_view_name(self): res = redirect('hardcoded2') self.assertEqual(res.url, '/hardcoded/doc.pdf') res = redirect('places', 1) self.assertEqual(res.url, '/places/1/') res = redirect('headlines', year='2008', month='02', day='17') self.assertEqual(res.url, '/headlines/2008.02.17/') with self.assertRaises(NoReverseMatch): redirect('not-a-view') def test_redirect_to_url(self): res = redirect('/foo/') self.assertEqual(res.url, '/foo/') res = redirect('http://example.com/') self.assertEqual(res.url, 'http://example.com/') # Assert that we can redirect using UTF-8 strings res = redirect('/æøå/abc/') self.assertEqual(res.url, '/%C3%A6%C3%B8%C3%A5/abc/') # Assert that no imports are attempted when dealing with a relative path # (previously, the below would resolve in a UnicodeEncodeError from __import__ ) res = redirect('/æøå.abc/') self.assertEqual(res.url, '/%C3%A6%C3%B8%C3%A5.abc/') res = redirect('os.path') self.assertEqual(res.url, 'os.path') def test_no_illegal_imports(self): # modules that are not listed in urlpatterns should not be importable redirect("urlpatterns_reverse.nonimported_module.view") self.assertNotIn("urlpatterns_reverse.nonimported_module", sys.modules) def test_reverse_by_path_nested(self): # Views added to urlpatterns using include() should be reversible. from .views import nested_view self.assertEqual(reverse(nested_view), '/includes/nested_path/') def test_redirect_view_object(self): from .views import absolute_kwargs_view res = redirect(absolute_kwargs_view) self.assertEqual(res.url, '/absolute_arg_view/') with self.assertRaises(NoReverseMatch): redirect(absolute_kwargs_view, wrong_argument=None) @override_settings(ROOT_URLCONF='urlpatterns_reverse.namespace_urls') class NamespaceTests(SimpleTestCase): def test_ambiguous_object(self): "Names deployed via dynamic URL objects that require namespaces can't be resolved" with self.assertRaises(NoReverseMatch): reverse('urlobject-view') with self.assertRaises(NoReverseMatch): reverse('urlobject-view', args=[37, 42]) with self.assertRaises(NoReverseMatch): reverse('urlobject-view', kwargs={'arg1': 42, 'arg2': 37}) def test_ambiguous_urlpattern(self): "Names deployed via dynamic URL objects that require namespaces can't be resolved" with self.assertRaises(NoReverseMatch): reverse('inner-nothing') with self.assertRaises(NoReverseMatch): reverse('inner-nothing', args=[37, 42]) with self.assertRaises(NoReverseMatch): reverse('inner-nothing', kwargs={'arg1': 42, 'arg2': 37}) def test_non_existent_namespace(self): "Nonexistent namespaces raise errors" with self.assertRaises(NoReverseMatch): reverse('blahblah:urlobject-view') with self.assertRaises(NoReverseMatch): reverse('test-ns1:blahblah:urlobject-view') def test_normal_name(self): "Normal lookups work as expected" self.assertEqual('/normal/', reverse('normal-view')) self.assertEqual('/normal/37/42/', reverse('normal-view', args=[37, 42])) self.assertEqual('/normal/42/37/', reverse('normal-view', kwargs={'arg1': 42, 'arg2': 37})) self.assertEqual('/+%5C$*/', reverse('special-view')) def test_simple_included_name(self): "Normal lookups work on names included from other patterns" self.assertEqual('/included/normal/', reverse('included_namespace_urls:inc-normal-view')) self.assertEqual('/included/normal/37/42/', reverse('included_namespace_urls:inc-normal-view', args=[37, 42])) self.assertEqual( '/included/normal/42/37/', reverse('included_namespace_urls:inc-normal-view', kwargs={'arg1': 42, 'arg2': 37}) ) self.assertEqual('/included/+%5C$*/', reverse('included_namespace_urls:inc-special-view')) def test_namespace_object(self): "Dynamic URL objects can be found using a namespace" self.assertEqual('/test1/inner/', reverse('test-ns1:urlobject-view')) self.assertEqual('/test1/inner/37/42/', reverse('test-ns1:urlobject-view', args=[37, 42])) self.assertEqual('/test1/inner/42/37/', reverse('test-ns1:urlobject-view', kwargs={'arg1': 42, 'arg2': 37})) self.assertEqual('/test1/inner/+%5C$*/', reverse('test-ns1:urlobject-special-view')) def test_app_object(self): "Dynamic URL objects can return a (pattern, app_name) 2-tuple, and include() can set the namespace" self.assertEqual('/newapp1/inner/', reverse('new-ns1:urlobject-view')) self.assertEqual('/newapp1/inner/37/42/', reverse('new-ns1:urlobject-view', args=[37, 42])) self.assertEqual('/newapp1/inner/42/37/', reverse('new-ns1:urlobject-view', kwargs={'arg1': 42, 'arg2': 37})) self.assertEqual('/newapp1/inner/+%5C$*/', reverse('new-ns1:urlobject-special-view')) def test_app_object_default_namespace(self): "Namespace defaults to app_name when including a (pattern, app_name) 2-tuple" self.assertEqual('/new-default/inner/', reverse('newapp:urlobject-view')) self.assertEqual('/new-default/inner/37/42/', reverse('newapp:urlobject-view', args=[37, 42])) self.assertEqual( '/new-default/inner/42/37/', reverse('newapp:urlobject-view', kwargs={'arg1': 42, 'arg2': 37}) ) self.assertEqual('/new-default/inner/+%5C$*/', reverse('newapp:urlobject-special-view')) def test_embedded_namespace_object(self): "Namespaces can be installed anywhere in the URL pattern tree" self.assertEqual('/included/test3/inner/', reverse('included_namespace_urls:test-ns3:urlobject-view')) self.assertEqual( '/included/test3/inner/37/42/', reverse('included_namespace_urls:test-ns3:urlobject-view', args=[37, 42]) ) self.assertEqual( '/included/test3/inner/42/37/', reverse('included_namespace_urls:test-ns3:urlobject-view', kwargs={'arg1': 42, 'arg2': 37}) ) self.assertEqual( '/included/test3/inner/+%5C$*/', reverse('included_namespace_urls:test-ns3:urlobject-special-view') ) def test_namespace_pattern(self): "Namespaces can be applied to include()'d urlpatterns" self.assertEqual('/ns-included1/normal/', reverse('inc-ns1:inc-normal-view')) self.assertEqual('/ns-included1/normal/37/42/', reverse('inc-ns1:inc-normal-view', args=[37, 42])) self.assertEqual( '/ns-included1/normal/42/37/', reverse('inc-ns1:inc-normal-view', kwargs={'arg1': 42, 'arg2': 37}) ) self.assertEqual('/ns-included1/+%5C$*/', reverse('inc-ns1:inc-special-view')) def test_app_name_pattern(self): "Namespaces can be applied to include()'d urlpatterns that set an app_name attribute" self.assertEqual('/app-included1/normal/', reverse('app-ns1:inc-normal-view')) self.assertEqual('/app-included1/normal/37/42/', reverse('app-ns1:inc-normal-view', args=[37, 42])) self.assertEqual( '/app-included1/normal/42/37/', reverse('app-ns1:inc-normal-view', kwargs={'arg1': 42, 'arg2': 37}) ) self.assertEqual('/app-included1/+%5C$*/', reverse('app-ns1:inc-special-view')) def test_namespace_pattern_with_variable_prefix(self): "When using an include with namespaces when there is a regex variable in front of it" self.assertEqual('/ns-outer/42/normal/', reverse('inc-outer:inc-normal-view', kwargs={'outer': 42})) self.assertEqual('/ns-outer/42/normal/', reverse('inc-outer:inc-normal-view', args=[42])) self.assertEqual( '/ns-outer/42/normal/37/4/', reverse('inc-outer:inc-normal-view', kwargs={'outer': 42, 'arg1': 37, 'arg2': 4}) ) self.assertEqual('/ns-outer/42/normal/37/4/', reverse('inc-outer:inc-normal-view', args=[42, 37, 4])) self.assertEqual('/ns-outer/42/+%5C$*/', reverse('inc-outer:inc-special-view', kwargs={'outer': 42})) self.assertEqual('/ns-outer/42/+%5C$*/', reverse('inc-outer:inc-special-view', args=[42])) def test_multiple_namespace_pattern(self): "Namespaces can be embedded" self.assertEqual('/ns-included1/test3/inner/', reverse('inc-ns1:test-ns3:urlobject-view')) self.assertEqual('/ns-included1/test3/inner/37/42/', reverse('inc-ns1:test-ns3:urlobject-view', args=[37, 42])) self.assertEqual( '/ns-included1/test3/inner/42/37/', reverse('inc-ns1:test-ns3:urlobject-view', kwargs={'arg1': 42, 'arg2': 37}) ) self.assertEqual('/ns-included1/test3/inner/+%5C$*/', reverse('inc-ns1:test-ns3:urlobject-special-view')) def test_nested_namespace_pattern(self): "Namespaces can be nested" self.assertEqual( '/ns-included1/ns-included4/ns-included1/test3/inner/', reverse('inc-ns1:inc-ns4:inc-ns1:test-ns3:urlobject-view') ) self.assertEqual( '/ns-included1/ns-included4/ns-included1/test3/inner/37/42/', reverse('inc-ns1:inc-ns4:inc-ns1:test-ns3:urlobject-view', args=[37, 42]) ) self.assertEqual( '/ns-included1/ns-included4/ns-included1/test3/inner/42/37/', reverse('inc-ns1:inc-ns4:inc-ns1:test-ns3:urlobject-view', kwargs={'arg1': 42, 'arg2': 37}) ) self.assertEqual( '/ns-included1/ns-included4/ns-included1/test3/inner/+%5C$*/', reverse('inc-ns1:inc-ns4:inc-ns1:test-ns3:urlobject-special-view') ) def test_app_lookup_object(self): "A default application namespace can be used for lookup" self.assertEqual('/default/inner/', reverse('testapp:urlobject-view')) self.assertEqual('/default/inner/37/42/', reverse('testapp:urlobject-view', args=[37, 42])) self.assertEqual('/default/inner/42/37/', reverse('testapp:urlobject-view', kwargs={'arg1': 42, 'arg2': 37})) self.assertEqual('/default/inner/+%5C$*/', reverse('testapp:urlobject-special-view')) def test_app_lookup_object_with_default(self): "A default application namespace is sensitive to the 'current' app can be used for lookup" self.assertEqual('/default/inner/', reverse('testapp:urlobject-view', current_app='test-ns3')) self.assertEqual( '/default/inner/37/42/', reverse('testapp:urlobject-view', args=[37, 42], current_app='test-ns3') ) self.assertEqual( '/default/inner/42/37/', reverse('testapp:urlobject-view', kwargs={'arg1': 42, 'arg2': 37}, current_app='test-ns3') ) self.assertEqual( '/default/inner/+%5C$*/', reverse('testapp:urlobject-special-view', current_app='test-ns3') ) def test_app_lookup_object_without_default(self): "An application namespace without a default is sensitive to the 'current' app can be used for lookup" self.assertEqual('/other2/inner/', reverse('nodefault:urlobject-view')) self.assertEqual('/other2/inner/37/42/', reverse('nodefault:urlobject-view', args=[37, 42])) self.assertEqual('/other2/inner/42/37/', reverse('nodefault:urlobject-view', kwargs={'arg1': 42, 'arg2': 37})) self.assertEqual('/other2/inner/+%5C$*/', reverse('nodefault:urlobject-special-view')) self.assertEqual('/other1/inner/', reverse('nodefault:urlobject-view', current_app='other-ns1')) self.assertEqual( '/other1/inner/37/42/', reverse('nodefault:urlobject-view', args=[37, 42], current_app='other-ns1') ) self.assertEqual( '/other1/inner/42/37/', reverse('nodefault:urlobject-view', kwargs={'arg1': 42, 'arg2': 37}, current_app='other-ns1') ) self.assertEqual('/other1/inner/+%5C$*/', reverse('nodefault:urlobject-special-view', current_app='other-ns1')) def test_special_chars_namespace(self): self.assertEqual('/+%5C$*/included/normal/', reverse('special:included_namespace_urls:inc-normal-view')) self.assertEqual( '/+%5C$*/included/normal/37/42/', reverse('special:included_namespace_urls:inc-normal-view', args=[37, 42]) ) self.assertEqual( '/+%5C$*/included/normal/42/37/', reverse('special:included_namespace_urls:inc-normal-view', kwargs={'arg1': 42, 'arg2': 37}) ) self.assertEqual('/+%5C$*/included/+%5C$*/', reverse('special:included_namespace_urls:inc-special-view')) def test_namespaces_with_variables(self): "Namespace prefixes can capture variables: see #15900" self.assertEqual('/inc70/', reverse('inc-ns5:inner-nothing', kwargs={'outer': '70'})) self.assertEqual( '/inc78/extra/foobar/', reverse('inc-ns5:inner-extra', kwargs={'outer': '78', 'extra': 'foobar'}) ) self.assertEqual('/inc70/', reverse('inc-ns5:inner-nothing', args=['70'])) self.assertEqual('/inc78/extra/foobar/', reverse('inc-ns5:inner-extra', args=['78', 'foobar'])) def test_nested_app_lookup(self): "A nested current_app should be split in individual namespaces (#24904)" self.assertEqual('/ns-included1/test4/inner/', reverse('inc-ns1:testapp:urlobject-view')) self.assertEqual('/ns-included1/test4/inner/37/42/', reverse('inc-ns1:testapp:urlobject-view', args=[37, 42])) self.assertEqual( '/ns-included1/test4/inner/42/37/', reverse('inc-ns1:testapp:urlobject-view', kwargs={'arg1': 42, 'arg2': 37}) ) self.assertEqual('/ns-included1/test4/inner/+%5C$*/', reverse('inc-ns1:testapp:urlobject-special-view')) self.assertEqual( '/ns-included1/test3/inner/', reverse('inc-ns1:testapp:urlobject-view', current_app='inc-ns1:test-ns3') ) self.assertEqual( '/ns-included1/test3/inner/37/42/', reverse('inc-ns1:testapp:urlobject-view', args=[37, 42], current_app='inc-ns1:test-ns3') ) self.assertEqual( '/ns-included1/test3/inner/42/37/', reverse('inc-ns1:testapp:urlobject-view', kwargs={'arg1': 42, 'arg2': 37}, current_app='inc-ns1:test-ns3') ) self.assertEqual( '/ns-included1/test3/inner/+%5C$*/', reverse('inc-ns1:testapp:urlobject-special-view', current_app='inc-ns1:test-ns3') ) def test_current_app_no_partial_match(self): "current_app should either match the whole path or shouldn't be used" self.assertEqual( '/ns-included1/test4/inner/', reverse('inc-ns1:testapp:urlobject-view', current_app='nonexistent:test-ns3') ) self.assertEqual( '/ns-included1/test4/inner/37/42/', reverse('inc-ns1:testapp:urlobject-view', args=[37, 42], current_app='nonexistent:test-ns3') ) self.assertEqual( '/ns-included1/test4/inner/42/37/', reverse('inc-ns1:testapp:urlobject-view', kwargs={'arg1': 42, 'arg2': 37}, current_app='nonexistent:test-ns3') ) self.assertEqual( '/ns-included1/test4/inner/+%5C$*/', reverse('inc-ns1:testapp:urlobject-special-view', current_app='nonexistent:test-ns3') ) @override_settings(ROOT_URLCONF=urlconf_outer.__name__) class RequestURLconfTests(SimpleTestCase): def test_urlconf(self): response = self.client.get('/test/me/') self.assertEqual(response.status_code, 200) self.assertEqual(response.content, b'outer:/test/me/,inner:/inner_urlconf/second_test/') response = self.client.get('/inner_urlconf/second_test/') self.assertEqual(response.status_code, 200) response = self.client.get('/second_test/') self.assertEqual(response.status_code, 404) @override_settings( MIDDLEWARE=[ '%s.ChangeURLconfMiddleware' % middleware.__name__, ] ) def test_urlconf_overridden(self): response = self.client.get('/test/me/') self.assertEqual(response.status_code, 404) response = self.client.get('/inner_urlconf/second_test/') self.assertEqual(response.status_code, 404) response = self.client.get('/second_test/') self.assertEqual(response.status_code, 200) self.assertEqual(response.content, b'outer:,inner:/second_test/') @override_settings( MIDDLEWARE=[ '%s.NullChangeURLconfMiddleware' % middleware.__name__, ] ) def test_urlconf_overridden_with_null(self): """ Overriding request.urlconf with None will fall back to the default URLconf. """ response = self.client.get('/test/me/') self.assertEqual(response.status_code, 200) self.assertEqual(response.content, b'outer:/test/me/,inner:/inner_urlconf/second_test/') response = self.client.get('/inner_urlconf/second_test/') self.assertEqual(response.status_code, 200) response = self.client.get('/second_test/') self.assertEqual(response.status_code, 404) @override_settings( MIDDLEWARE=[ '%s.ChangeURLconfMiddleware' % middleware.__name__, '%s.ReverseInnerInResponseMiddleware' % middleware.__name__, ] ) def test_reverse_inner_in_response_middleware(self): """ Test reversing an URL from the *overridden* URLconf from inside a response middleware. """ response = self.client.get('/second_test/') self.assertEqual(response.status_code, 200) self.assertEqual(response.content, b'/second_test/') @override_settings( MIDDLEWARE=[ '%s.ChangeURLconfMiddleware' % middleware.__name__, '%s.ReverseOuterInResponseMiddleware' % middleware.__name__, ] ) def test_reverse_outer_in_response_middleware(self): """ Test reversing an URL from the *default* URLconf from inside a response middleware. """ message = "Reverse for 'outer' not found." with self.assertRaisesMessage(NoReverseMatch, message): self.client.get('/second_test/') @override_settings( MIDDLEWARE=[ '%s.ChangeURLconfMiddleware' % middleware.__name__, '%s.ReverseInnerInStreaming' % middleware.__name__, ] ) def test_reverse_inner_in_streaming(self): """ Test reversing an URL from the *overridden* URLconf from inside a streaming response. """ response = self.client.get('/second_test/') self.assertEqual(response.status_code, 200) self.assertEqual(b''.join(response), b'/second_test/') @override_settings( MIDDLEWARE=[ '%s.ChangeURLconfMiddleware' % middleware.__name__, '%s.ReverseOuterInStreaming' % middleware.__name__, ] ) def test_reverse_outer_in_streaming(self): """ Test reversing an URL from the *default* URLconf from inside a streaming response. """ message = "Reverse for 'outer' not found." with self.assertRaisesMessage(NoReverseMatch, message): self.client.get('/second_test/') b''.join(self.client.get('/second_test/')) class ErrorHandlerResolutionTests(SimpleTestCase): """Tests for handler400, handler404 and handler500""" def setUp(self): urlconf = 'urlpatterns_reverse.urls_error_handlers' urlconf_callables = 'urlpatterns_reverse.urls_error_handlers_callables' self.resolver = RegexURLResolver(r'^$', urlconf) self.callable_resolver = RegexURLResolver(r'^$', urlconf_callables) def test_named_handlers(self): handler = (empty_view, {}) self.assertEqual(self.resolver.resolve_error_handler(400), handler) self.assertEqual(self.resolver.resolve_error_handler(404), handler) self.assertEqual(self.resolver.resolve_error_handler(500), handler) def test_callable_handlers(self): handler = (empty_view, {}) self.assertEqual(self.callable_resolver.resolve_error_handler(400), handler) self.assertEqual(self.callable_resolver.resolve_error_handler(404), handler) self.assertEqual(self.callable_resolver.resolve_error_handler(500), handler) @override_settings(ROOT_URLCONF='urlpatterns_reverse.urls_without_full_import') class DefaultErrorHandlerTests(SimpleTestCase): def test_default_handler(self): "If the urls.py doesn't specify handlers, the defaults are used" response = self.client.get('/test/') self.assertEqual(response.status_code, 404) with self.assertRaisesMessage(ValueError, "I don't think I'm getting good"): self.client.get('/bad_view/') @override_settings(ROOT_URLCONF=None) class NoRootUrlConfTests(SimpleTestCase): """Tests for handler404 and handler500 if ROOT_URLCONF is None""" def test_no_handler_exception(self): with self.assertRaises(ImproperlyConfigured): self.client.get('/test/me/') @override_settings(ROOT_URLCONF='urlpatterns_reverse.namespace_urls') class ResolverMatchTests(SimpleTestCase): def test_urlpattern_resolve(self): for path, url_name, app_name, namespace, view_name, func, args, kwargs in resolve_test_data: # Test legacy support for extracting "function, args, kwargs" match_func, match_args, match_kwargs = resolve(path) self.assertEqual(match_func, func) self.assertEqual(match_args, args) self.assertEqual(match_kwargs, kwargs) # Test ResolverMatch capabilities. match = resolve(path) self.assertEqual(match.__class__, ResolverMatch) self.assertEqual(match.url_name, url_name) self.assertEqual(match.app_name, app_name) self.assertEqual(match.namespace, namespace) self.assertEqual(match.view_name, view_name) self.assertEqual(match.func, func) self.assertEqual(match.args, args) self.assertEqual(match.kwargs, kwargs) # ... and for legacy purposes: self.assertEqual(match[0], func) self.assertEqual(match[1], args) self.assertEqual(match[2], kwargs) def test_resolver_match_on_request(self): response = self.client.get('/resolver_match/') resolver_match = response.resolver_match self.assertEqual(resolver_match.url_name, 'test-resolver-match') def test_resolver_match_on_request_before_resolution(self): request = HttpRequest() self.assertIsNone(request.resolver_match) @override_settings(ROOT_URLCONF='urlpatterns_reverse.erroneous_urls') class ErroneousViewTests(SimpleTestCase): def test_noncallable_view(self): # View is not a callable (explicit import; arbitrary Python object) with self.assertRaisesMessage(TypeError, 'view must be a callable'): url(r'uncallable-object/$', views.uncallable) def test_invalid_regex(self): # Regex contains an error (refs #6170) msg = '(regex_error/$" is not a valid regular expression' with self.assertRaisesMessage(ImproperlyConfigured, msg): reverse(views.empty_view) class ViewLoadingTests(SimpleTestCase): def test_view_loading(self): self.assertEqual(get_callable('urlpatterns_reverse.views.empty_view'), empty_view) # passing a callable should return the callable self.assertEqual(get_callable(empty_view), empty_view) def test_exceptions(self): # A missing view (identified by an AttributeError) should raise # ViewDoesNotExist, ... with self.assertRaisesMessage(ViewDoesNotExist, "View does not exist in"): get_callable('urlpatterns_reverse.views.i_should_not_exist') # ... but if the AttributeError is caused by something else don't # swallow it. with self.assertRaises(AttributeError): get_callable('urlpatterns_reverse.views_broken.i_am_broken') class IncludeTests(SimpleTestCase): url_patterns = [ url(r'^inner/$', views.empty_view, name='urlobject-view'), url(r'^inner/(?P[0-9]+)/(?P[0-9]+)/$', views.empty_view, name='urlobject-view'), url(r'^inner/\+\\\$\*/$', views.empty_view, name='urlobject-special-view'), ] app_urls = URLObject('inc-app') def test_include_urls(self): self.assertEqual(include(self.url_patterns), (self.url_patterns, None, None)) def test_include_namespace(self): msg = ( "Specifying a namespace in django.conf.urls.include() without " "providing an app_name is not supported." ) with self.assertRaisesMessage(ImproperlyConfigured, msg): include(self.url_patterns, 'namespace') def test_include_4_tuple(self): msg = 'Passing a 4-tuple to django.conf.urls.include() is not supported.' with self.assertRaisesMessage(ImproperlyConfigured, msg): include((self.url_patterns, 'app_name', 'namespace', 'blah')) def test_include_3_tuple(self): msg = 'Passing a 3-tuple to django.conf.urls.include() is not supported.' with self.assertRaisesMessage(ImproperlyConfigured, msg): include((self.url_patterns, 'app_name', 'namespace')) def test_include_3_tuple_namespace(self): msg = 'Cannot override the namespace for a dynamic module that provides a namespace.' with self.assertRaisesMessage(ImproperlyConfigured, msg): include((self.url_patterns, 'app_name', 'namespace'), 'namespace') def test_include_2_tuple(self): self.assertEqual( include((self.url_patterns, 'app_name')), (self.url_patterns, 'app_name', 'app_name') ) def test_include_2_tuple_namespace(self): self.assertEqual( include((self.url_patterns, 'app_name'), namespace='namespace'), (self.url_patterns, 'app_name', 'namespace') ) def test_include_app_name(self): self.assertEqual( include(self.app_urls), (self.app_urls, 'inc-app', 'inc-app') ) def test_include_app_name_namespace(self): self.assertEqual( include(self.app_urls, 'namespace'), (self.app_urls, 'inc-app', 'namespace') ) @override_settings(ROOT_URLCONF='urlpatterns_reverse.urls') class LookaheadTests(SimpleTestCase): def test_valid_resolve(self): test_urls = [ '/lookahead-/a-city/', '/lookbehind-/a-city/', '/lookahead+/a-city/', '/lookbehind+/a-city/', ] for test_url in test_urls: match = resolve(test_url) self.assertEqual(match.kwargs, {'city': 'a-city'}) def test_invalid_resolve(self): test_urls = [ '/lookahead-/not-a-city/', '/lookbehind-/not-a-city/', '/lookahead+/other-city/', '/lookbehind+/other-city/', ] for test_url in test_urls: with self.assertRaises(Resolver404): resolve(test_url) def test_valid_reverse(self): url = reverse('lookahead-positive', kwargs={'city': 'a-city'}) self.assertEqual(url, '/lookahead+/a-city/') url = reverse('lookahead-negative', kwargs={'city': 'a-city'}) self.assertEqual(url, '/lookahead-/a-city/') url = reverse('lookbehind-positive', kwargs={'city': 'a-city'}) self.assertEqual(url, '/lookbehind+/a-city/') url = reverse('lookbehind-negative', kwargs={'city': 'a-city'}) self.assertEqual(url, '/lookbehind-/a-city/') def test_invalid_reverse(self): with self.assertRaises(NoReverseMatch): reverse('lookahead-positive', kwargs={'city': 'other-city'}) with self.assertRaises(NoReverseMatch): reverse('lookahead-negative', kwargs={'city': 'not-a-city'}) with self.assertRaises(NoReverseMatch): reverse('lookbehind-positive', kwargs={'city': 'other-city'}) with self.assertRaises(NoReverseMatch): reverse('lookbehind-negative', kwargs={'city': 'not-a-city'})