2018-01-22 14:49:02 +01:00
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import csv
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2018-01-19 17:48:00 +01:00
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from unittest import mock
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from urllib.parse import parse_qs, urlparse
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2018-10-06 12:35:49 +02:00
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import icalendar
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2018-01-19 17:48:00 +01:00
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from django.contrib.auth import get_user_model
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from django.http import QueryDict
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from django.test import Client
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2019-04-17 18:21:15 +02:00
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from django.urls import reverse
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2018-01-19 17:48:00 +01:00
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from django.utils import timezone
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from django.utils.functional import cached_property
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User = get_user_model()
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2020-05-10 23:54:21 +02:00
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class MockLDAPMixin:
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"""
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Mixin pour simuler un appel à un serveur LDAP (e.g., celui de l'ENS) dans des
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tests unitaires. La réponse est une instance d'une classe Entry, qui simule
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grossièrement l'interface de ldap3.
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Cette classe patche la méthode magique `__enter__`, le code correspondant doit donc
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appeler `with Connection(*args, **kwargs) as foo` pour que le test fonctionne.
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"""
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def mockLDAP(self, results):
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class Elt:
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def __init__(self, value):
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self.value = value
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class Entry:
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def __init__(self, **kwargs):
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for k, v in kwargs.items():
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setattr(self, k, Elt(v))
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results_as_ldap = [Entry(uid=uid, cn=name) for uid, name in results]
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mock_connection = mock.MagicMock()
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mock_connection.entries = results_as_ldap
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# Connection is used as a context manager.
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mock_context_manager = mock.MagicMock()
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mock_context_manager.return_value.__enter__.return_value = mock_connection
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patcher = mock.patch(
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"shared.views.autocomplete.Connection", new=mock_context_manager
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)
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patcher.start()
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self.addCleanup(patcher.stop)
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return mock_connection
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class CSVResponseMixin:
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"""
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Mixin pour manipuler des réponses données via CSV. Deux choix sont possibles:
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- si `as_dict=False`, convertit le CSV en une liste de listes (une liste par ligne)
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- si `as_dict=True`, convertit le CSV en une liste de dicts, avec les champs donnés
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par la première ligne du CSV.
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"""
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def load_from_csv_response(self, r, as_dict=False, **reader_kwargs):
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content = r.content.decode("utf-8")
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# la dernière ligne du fichier CSV est toujours vide
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content = content.split("\n")[:-1]
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if as_dict:
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reader_class = csv.DictReader
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else:
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reader_class = csv.reader
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return list(reader_class(content, **reader_kwargs))
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class ICalMixin:
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"""
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Mixin pour manipuler des iCalendars. Permet de tester l'égalité entre
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in iCal d'une part, et une liste d'évènements (représentés par des dicts)
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d'autre part.
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"""
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def _test_event_equal(self, event, exp):
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"""
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Les éléments du dict peuvent être de deux types:
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- un tuple `(getter, expected_value)`, auquel cas on teste l'égalité
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`getter(event[key]) == value)`;
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- une variable `value` de n'importe quel autre type, auquel cas on teste
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`event[key] == value`.
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"""
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for key, value in exp.items():
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if isinstance(value, tuple):
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getter = value[0]
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v = value[1]
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else:
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getter = lambda v: v
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v = value
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# dans un iCal, les fields sont en majuscules
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if getter(event[key.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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2018-01-19 17:48:00 +01:00
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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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2018-10-06 12:35:49 +02:00
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querystring["next"] = full_path
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2018-01-19 17:48:00 +01:00
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2018-10-06 12:35:49 +02:00
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login_url = "{}?{}".format(
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reverse("cof-login"), querystring.urlencode(safe="/")
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)
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2018-01-19 17:48:00 +01:00
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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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2018-10-06 12:35:49 +02:00
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self.assertRedirects(response, login_url, fetch_redirect_response=False)
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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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2018-10-06 12:35:49 +02:00
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"response code is %(code)d."
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% {
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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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2018-10-06 12:35:49 +02:00
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else "anonymous"
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2018-01-19 17:48:00 +01:00
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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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2018-01-19 17:48:00 +01:00
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self.assertDictEqual(
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2018-10-06 12:35:49 +02:00
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parse_qs(parsed.query), 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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2018-01-21 17:51:23 +01:00
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2018-01-19 17:48:00 +01:00
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class ViewTestCaseMixin(TestCaseMixin):
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"""
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2020-05-10 23:58:13 +02:00
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Utilitaire pour automatiser certains tests sur les vues Django.
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Création d'utilisateurs
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------------------------
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# Données de base
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On crée dans tous les cas deux utilisateurs : un utilisateur normal "user",
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et un superutilisateur "root", avec un mot de passe identique au username.
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# Accès et utilisateurs supplémentaires
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Les utilisateurs créés sont accessibles dans le dict `self.users`, qui associe
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un label à une instance de User.
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Pour rajouter des utilisateurs supplémentaires (et s'assurer qu'ils sont
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disponibles dans `self.users`), on peut redéfinir la fonction `get_users_extra()`,
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qui doit renvoyer là aussi un dict <label: User instance>.
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Misc QoL
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------------------------
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Pour éviter une erreur de login (puisque les messages de Django ne sont pas
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disponibles), les messages de bienvenue de GestioCOF sont patchés.
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Un attribut `self.now` est fixé au démarrage, pour être donné comme valeur
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de retour à un patch local de `django.utils.timezone.now`. Cela permet de
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tester des dates/heures de manière robuste.
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Test d'URLS
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------------------------
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# Usage basique
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Teste que l'URL générée par `reverse` correspond bien à l'URL théorique.
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Attributs liés :
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- `url_name` : nom de l'URL qui sera donné à `reverse`,
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- `url_expected` : URL attendue en retour.
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- (optionnels) `url_args` et `url_kwargs` : arguments de l'URL pour `reverse`.
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# Usage avancé
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On peut tester plusieurs URLs pour une même vue, en redéfinissant la fonction
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`urls_conf()`. Cette fonction doit retourner une liste de dicts, avec les clés
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suivantes : `name`, `args`, `kwargs`, `expected`.
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# Accès aux URLs générées
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Dans le cas d'usage basique, l'attribut `self.url` contient l'URL de la vue testée
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(telle que renvoyée par `reverse()`). Si plusieurs URLs sont définies dans
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`urls_conf()`, elles sont accessibles par la suite dans `self.reversed_urls`.
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Authentification
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------------------------
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Si l'attribut `auth_user` est dans `self.users`, l'utilisateur correspondant
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est authentifié avant chaque test (cela n'empêche bien sûr pas de login un autre
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utilisateur à la main).
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Test de restrictions d'accès
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------------------------
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L'utilitaire vérifie automatiquement que certains utilisateurs n'ont pas accès à la
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vue. Plus spécifiquement, sont testés toutes les méthodes dans `self.http_methods`
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et tous les utilisateurs dans `self.auth_forbidden`. Pour rappel, l'utilisateur
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`None` sert à tester la vue sans authentification.
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On peut donner des paramètres GET/POST/etc. aux tests en définissant un attribut
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<methode>_data.
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TODO (?): faire pareil pour vérifier les GET/POST classiques (code 200)
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2018-01-19 17:48:00 +01:00
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"""
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2018-10-06 12:35:49 +02:00
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2018-01-19 17:48:00 +01:00
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url_name = None
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url_expected = None
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2018-10-06 12:35:49 +02:00
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http_methods = ["GET"]
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2018-01-19 17:48:00 +01:00
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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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2020-05-10 23:58:13 +02:00
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2018-10-06 12:35:49 +02:00
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patcher_messages = mock.patch("gestioncof.signals.messages")
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2018-01-19 17:48:00 +01:00
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patcher_messages.start()
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self.addCleanup(patcher_messages.stop)
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self.now = timezone.now()
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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(username=self.auth_user, password=self.auth_user)
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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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2018-01-19 17:48:00 +01:00
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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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{
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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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]
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2018-01-19 17:48:00 +01:00
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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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2018-10-06 12:35:49 +02:00
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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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2018-01-19 17:48:00 +01:00
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)
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2018-10-06 12:35:49 +02:00
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for url_conf in self.urls_conf
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2018-10-28 14:25:43 +01:00
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if url_conf["name"] is not None
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2018-10-06 12:35:49 +02:00
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]
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2018-01-19 17:48:00 +01:00
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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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2018-10-06 12:35:49 +02:00
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self.assertEqual(url, conf["expected"])
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2018-01-19 17:48:00 +01:00
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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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2018-10-06 12:35:49 +02:00
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data = getattr(self, "{}_data".format(method), {})
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2018-01-19 17:48:00 +01:00
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r = send_request(url, data)
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self.assertForbidden(r)
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