347 lines
12 KiB
Python
347 lines
12 KiB
Python
from unittest import mock
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from urllib.parse import parse_qs, urlparse
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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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from .utils import create_root, create_team, create_user
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class TestCaseMixin:
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"""Extends TestCase for kfet application tests."""
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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 = '/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 assertForbiddenKfet(self, response, form_ctx='form'):
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"""
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Test that a response (retrieved with a Client) contains error due to
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lack of kfet permissions.
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It checks that 'Permission refusée' is present in the non-field errors
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of the form of response context at key 'form_ctx', or present in
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messages.
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This should be used for pages which can be accessed by the kfet team
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members, but require additionnal permission(s) to make an operation.
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"""
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try:
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self.assertEqual(response.status_code, 200)
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try:
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form = response.context[form_ctx]
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self.assertIn("Permission refusée", form.non_field_errors())
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except (AssertionError, AttributeError, KeyError):
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messages = [str(msg) for msg in response.context['messages']]
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self.assertIn("Permission refusée", messages)
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except AssertionError:
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request = response.wsgi_request
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raise AssertionError(
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"%(http_method)s request at %(path)s should raise an error "
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"for %(username)s user.\n"
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"Cannot find any errors in non-field errors of form "
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"'%(form_ctx)s', nor in messages." % {
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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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"'%s'" % 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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'form_ctx': form_ctx,
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}
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)
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def assertInstanceExpected(self, instance, expected):
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"""
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Test that the values of the attributes and without-argument methods of
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'instance' are equal to 'expected' pairs.
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"""
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for attr, expected_value in expected.items():
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value = getattr(instance, attr)
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if callable(value):
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value = value()
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self.assertEqual(value, expected_value)
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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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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, three users are created with their kfet account:
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- 'user': a basic user without any permission, account trigramme: 000,
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- 'team': a user with kfet.is_team permission, account trigramme: 100,
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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 3 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. Similarly, their kfet account is
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registered on 'accounts' attribute.
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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('cof.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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# These attributes register users and accounts instances.
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self.users = {}
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self.accounts = {}
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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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self.client.force_login(self.users[self.auth_user])
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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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# Format desc: username, password, trigramme
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return {
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# user, user, 000
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'user': create_user(),
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# team, team, 100
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'team': create_team(),
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# root, root, 200
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'root': create_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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if hasattr(user.profile, 'account_kfet'):
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self.accounts[label] = user.profile.account_kfet
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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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