forked from DGNum/gestioCOF
330 lines
10 KiB
Python
330 lines
10 KiB
Python
from unittest import mock
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from urllib.parse import parse_qs, urlparse
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from django.contrib.auth import get_user_model
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from django.core.urlresolvers import reverse
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from django.http import QueryDict
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from django.test import Client
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from django.utils import timezone
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from django.utils.functional import cached_property
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import icalendar
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User = get_user_model()
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class TestCaseMixin:
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def assertForbidden(self, response):
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"""
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Test that the response (retrieved with a Client) is a denial of access.
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The response should verify one of the following:
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- its HTTP response code is 403,
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- it redirects to the login page with a GET parameter named 'next'
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whose value is the url of the requested page.
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"""
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request = response.wsgi_request
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try:
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try:
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# Is this an HTTP Forbidden response ?
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self.assertEqual(response.status_code, 403)
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except AssertionError:
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# A redirection to the login view is fine too.
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# Let's build the login url with the 'next' param on current
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# page.
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full_path = request.get_full_path()
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querystring = QueryDict(mutable=True)
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querystring['next'] = full_path
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login_url = '{}?{}'.format(
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reverse('cof-login'), querystring.urlencode(safe='/'))
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# We don't focus on what the login view does.
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# So don't fetch the redirect.
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self.assertRedirects(
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response, login_url,
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fetch_redirect_response=False,
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)
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except AssertionError:
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raise AssertionError(
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"%(http_method)s request at %(path)s should be forbidden for "
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"%(username)s user.\n"
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"Response isn't 403, nor a redirect to login view. Instead, "
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"response code is %(code)d." % {
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'http_method': request.method,
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'path': request.get_full_path(),
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'username': (
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"'{}'".format(request.user)
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if request.user.is_authenticated()
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else 'anonymous'
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),
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'code': response.status_code,
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}
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)
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def assertUrlsEqual(self, actual, expected):
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"""
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Test that the url 'actual' is as 'expected'.
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Arguments:
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actual (str): Url to verify.
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expected: Two forms are accepted.
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* (str): Expected url. Strings equality is checked.
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* (dict): Its keys must be attributes of 'urlparse(actual)'.
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Equality is checked for each present key, except for
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'query' which must be a dict of the expected query string
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parameters.
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"""
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if type(expected) == dict:
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parsed = urlparse(actual)
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for part, expected_part in expected.items():
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if part == 'query':
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self.assertDictEqual(
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parse_qs(parsed.query),
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expected.get('query', {}),
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)
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else:
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self.assertEqual(getattr(parsed, part), expected_part)
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else:
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self.assertEqual(actual, expected)
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def _test_event_equal(self, event, exp):
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for k, v_desc in exp.items():
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if isinstance(v_desc, tuple):
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v_getter = v_desc[0]
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v = v_desc[1]
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else:
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v_getter = lambda v: v
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v = v_desc
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if v_getter(event[k.upper()]) != v:
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return False
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return True
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def _find_event(self, ev, l):
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for i, elt in enumerate(l):
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if self._test_event_equal(ev, elt):
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return elt, i
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return False, -1
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def assertCalEqual(self, ical_content, expected):
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remaining = expected.copy()
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unexpected = []
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cal = icalendar.Calendar.from_ical(ical_content)
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for ev in cal.walk('vevent'):
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found, i_found = self._find_event(ev, remaining)
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if found:
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remaining.pop(i_found)
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else:
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unexpected.append(ev)
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self.assertListEqual(unexpected, [])
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self.assertListEqual(remaining, [])
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class ViewTestCaseMixin(TestCaseMixin):
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"""
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TestCase extension to ease tests of kfet views.
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Urls concerns
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-------------
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# Basic usage
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Attributes:
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url_name (str): Name of view under test, as given to 'reverse'
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function.
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url_args (list, optional): Will be given to 'reverse' call.
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url_kwargs (dict, optional): Same.
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url_expcted (str): What 'reverse' should return given previous
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attributes.
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View url can then be accessed at the 'url' attribute.
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# Advanced usage
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If multiple combinations of url name, args, kwargs can be used for a view,
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it is possible to define 'urls_conf' attribute. It must be a list whose
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each item is a dict defining arguments for 'reverse' call ('name', 'args',
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'kwargs' keys) and its expected result ('expected' key).
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The reversed urls can be accessed at the 't_urls' attribute.
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Users concerns
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--------------
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During setup, the following users are created:
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- 'user': a basic user without any permission,
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- 'root': a superuser, account trigramme: 200.
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Their password is their username.
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One can create additionnal users with 'get_users_extra' method, or prevent
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these users to be created with 'get_users_base' method. See these two
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methods for further informations.
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By using 'register_user' method, these users can then be accessed at
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'users' attribute by their label.
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A user label can be given to 'auth_user' attribute. The related user is
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then authenticated on self.client during test setup. Its value defaults to
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'None', meaning no user is authenticated.
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Automated tests
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---------------
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# Url reverse
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Based on url-related attributes/properties, the test 'test_urls' checks
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that expected url is returned by 'reverse' (once with basic url usage and
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each for advanced usage).
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# Forbidden responses
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The 'test_forbidden' test verifies that each user, from labels of
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'auth_forbidden' attribute, can't access the url(s), i.e. response should
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be a 403, or a redirect to login view.
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Tested HTTP requests are given by 'http_methods' attribute. Additional data
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can be given by defining an attribute '<method(lowercase)>_data'.
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"""
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url_name = None
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url_expected = None
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http_methods = ['GET']
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auth_user = None
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auth_forbidden = []
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def setUp(self):
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"""
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Warning: Do not forget to call super().setUp() in subclasses.
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"""
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# Signals handlers on login/logout send messages.
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# Due to the way the Django' test Client performs login, this raise an
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# error. As workaround, we mock the Django' messages module.
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patcher_messages = mock.patch('gestioncof.signals.messages')
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patcher_messages.start()
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self.addCleanup(patcher_messages.stop)
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# A test can mock 'django.utils.timezone.now' and give this as return
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# value. E.g. it is useful if the test checks values of 'auto_now' or
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# 'auto_now_add' fields.
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self.now = timezone.now()
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# Register of User instances.
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self.users = {}
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for label, user in dict(self.users_base, **self.users_extra).items():
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self.register_user(label, user)
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if self.auth_user:
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# The wrapper is a sanity check.
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self.assertTrue(
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self.client.login(
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username=self.auth_user,
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password=self.auth_user,
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)
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)
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def tearDown(self):
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del self.users_base
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del self.users_extra
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def get_users_base(self):
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"""
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Dict of <label: user instance>.
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Note: Don't access yourself this property. Use 'users_base' attribute
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which cache the returned value from here.
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It allows to give functions calls, which creates users instances, as
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values here.
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"""
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return {
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'user': User.objects.create_user('user', '', 'user'),
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'root': User.objects.create_superuser('root', '', 'root'),
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}
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@cached_property
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def users_base(self):
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return self.get_users_base()
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def get_users_extra(self):
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"""
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Dict of <label: user instance>.
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Note: Don't access yourself this property. Use 'users_base' attribute
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which cache the returned value from here.
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It allows to give functions calls, which create users instances, as
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values here.
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"""
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return {}
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@cached_property
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def users_extra(self):
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return self.get_users_extra()
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def register_user(self, label, user):
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self.users[label] = user
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def get_user(self, label):
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if self.auth_user is not None:
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return self.auth_user
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return self.auth_user_mapping.get(label)
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@property
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def urls_conf(self):
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return [{
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'name': self.url_name,
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'args': getattr(self, 'url_args', []),
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'kwargs': getattr(self, 'url_kwargs', {}),
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'expected': self.url_expected,
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}]
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@property
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def t_urls(self):
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return [
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reverse(
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url_conf['name'],
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args=url_conf.get('args', []),
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kwargs=url_conf.get('kwargs', {}),
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)
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for url_conf in self.urls_conf]
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@property
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def url(self):
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return self.t_urls[0]
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def test_urls(self):
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for url, conf in zip(self.t_urls, self.urls_conf):
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self.assertEqual(url, conf['expected'])
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def test_forbidden(self):
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for method in self.http_methods:
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for user in self.auth_forbidden:
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for url in self.t_urls:
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self.check_forbidden(method, url, user)
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def check_forbidden(self, method, url, user=None):
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method = method.lower()
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client = Client()
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if user is not None:
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client.login(username=user, password=user)
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send_request = getattr(client, method)
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data = getattr(self, '{}_data'.format(method), {})
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r = send_request(url, data)
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self.assertForbidden(r)
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