651 lines
24 KiB
Python
651 lines
24 KiB
Python
import base64
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import os
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import shutil
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import string
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import sys
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import tempfile
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import unittest
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from datetime import timedelta
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from django.conf import settings
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from django.contrib.sessions.backends.cache import SessionStore as CacheSession
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from django.contrib.sessions.backends.cached_db import \
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SessionStore as CacheDBSession
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from django.contrib.sessions.backends.db import SessionStore as DatabaseSession
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from django.contrib.sessions.backends.file import SessionStore as FileSession
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from django.contrib.sessions.backends.signed_cookies import \
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SessionStore as CookieSession
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from django.contrib.sessions.exceptions import InvalidSessionKey
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from django.contrib.sessions.middleware import SessionMiddleware
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from django.contrib.sessions.models import Session
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from django.contrib.sessions.serializers import (
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JSONSerializer, PickleSerializer,
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)
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from django.core import management
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from django.core.cache import caches
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from django.core.cache.backends.base import InvalidCacheBackendError
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from django.core.exceptions import ImproperlyConfigured
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from django.http import HttpResponse
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from django.test import (
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RequestFactory, TestCase, ignore_warnings, override_settings,
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)
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from django.test.utils import patch_logger
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from django.utils import six, timezone
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from django.utils.encoding import force_text
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from django.utils.six.moves import http_cookies
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class SessionTestsMixin(object):
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# This does not inherit from TestCase to avoid any tests being run with this
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# class, which wouldn't work, and to allow different TestCase subclasses to
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# be used.
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backend = None # subclasses must specify
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def setUp(self):
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self.session = self.backend()
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def tearDown(self):
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# NB: be careful to delete any sessions created; stale sessions fill up
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# the /tmp (with some backends) and eventually overwhelm it after lots
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# of runs (think buildbots)
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self.session.delete()
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def test_new_session(self):
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self.assertFalse(self.session.modified)
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self.assertFalse(self.session.accessed)
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def test_get_empty(self):
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self.assertEqual(self.session.get('cat'), None)
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def test_store(self):
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self.session['cat'] = "dog"
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self.assertTrue(self.session.modified)
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self.assertEqual(self.session.pop('cat'), 'dog')
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def test_pop(self):
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self.session['some key'] = 'exists'
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# Need to reset these to pretend we haven't accessed it:
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self.accessed = False
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self.modified = False
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self.assertEqual(self.session.pop('some key'), 'exists')
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self.assertTrue(self.session.accessed)
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self.assertTrue(self.session.modified)
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self.assertEqual(self.session.get('some key'), None)
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def test_pop_default(self):
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self.assertEqual(self.session.pop('some key', 'does not exist'),
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'does not exist')
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self.assertTrue(self.session.accessed)
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self.assertFalse(self.session.modified)
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def test_setdefault(self):
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self.assertEqual(self.session.setdefault('foo', 'bar'), 'bar')
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self.assertEqual(self.session.setdefault('foo', 'baz'), 'bar')
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self.assertTrue(self.session.accessed)
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self.assertTrue(self.session.modified)
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def test_update(self):
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self.session.update({'update key': 1})
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self.assertTrue(self.session.accessed)
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self.assertTrue(self.session.modified)
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self.assertEqual(self.session.get('update key', None), 1)
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def test_has_key(self):
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self.session['some key'] = 1
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self.session.modified = False
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self.session.accessed = False
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self.assertIn('some key', self.session)
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self.assertTrue(self.session.accessed)
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self.assertFalse(self.session.modified)
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def test_values(self):
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self.assertEqual(list(self.session.values()), [])
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self.assertTrue(self.session.accessed)
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self.session['some key'] = 1
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self.assertEqual(list(self.session.values()), [1])
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def test_iterkeys(self):
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self.session['x'] = 1
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self.session.modified = False
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self.session.accessed = False
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i = six.iterkeys(self.session)
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self.assertTrue(hasattr(i, '__iter__'))
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self.assertTrue(self.session.accessed)
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self.assertFalse(self.session.modified)
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self.assertEqual(list(i), ['x'])
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def test_itervalues(self):
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self.session['x'] = 1
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self.session.modified = False
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self.session.accessed = False
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i = six.itervalues(self.session)
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self.assertTrue(hasattr(i, '__iter__'))
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self.assertTrue(self.session.accessed)
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self.assertFalse(self.session.modified)
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self.assertEqual(list(i), [1])
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def test_iteritems(self):
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self.session['x'] = 1
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self.session.modified = False
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self.session.accessed = False
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i = six.iteritems(self.session)
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self.assertTrue(hasattr(i, '__iter__'))
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self.assertTrue(self.session.accessed)
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self.assertFalse(self.session.modified)
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self.assertEqual(list(i), [('x', 1)])
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def test_clear(self):
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self.session['x'] = 1
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self.session.modified = False
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self.session.accessed = False
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self.assertEqual(list(self.session.items()), [('x', 1)])
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self.session.clear()
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self.assertEqual(list(self.session.items()), [])
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self.assertTrue(self.session.accessed)
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self.assertTrue(self.session.modified)
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def test_save(self):
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if (hasattr(self.session, '_cache') and 'DummyCache' in
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settings.CACHES[settings.SESSION_CACHE_ALIAS]['BACKEND']):
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raise unittest.SkipTest("Session saving tests require a real cache backend")
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self.session.save()
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self.assertTrue(self.session.exists(self.session.session_key))
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def test_delete(self):
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self.session.save()
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self.session.delete(self.session.session_key)
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self.assertFalse(self.session.exists(self.session.session_key))
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def test_flush(self):
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self.session['foo'] = 'bar'
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self.session.save()
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prev_key = self.session.session_key
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self.session.flush()
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self.assertFalse(self.session.exists(prev_key))
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self.assertNotEqual(self.session.session_key, prev_key)
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self.assertTrue(self.session.modified)
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self.assertTrue(self.session.accessed)
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def test_cycle(self):
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self.session['a'], self.session['b'] = 'c', 'd'
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self.session.save()
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prev_key = self.session.session_key
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prev_data = list(self.session.items())
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self.session.cycle_key()
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self.assertNotEqual(self.session.session_key, prev_key)
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self.assertEqual(list(self.session.items()), prev_data)
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def test_invalid_key(self):
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# Submitting an invalid session key (either by guessing, or if the db has
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# removed the key) results in a new key being generated.
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try:
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session = self.backend('1')
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try:
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session.save()
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except AttributeError:
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self.fail(
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"The session object did not save properly. "
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"Middleware may be saving cache items without namespaces."
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)
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self.assertNotEqual(session.session_key, '1')
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self.assertEqual(session.get('cat'), None)
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session.delete()
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finally:
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# Some backends leave a stale cache entry for the invalid
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# session key; make sure that entry is manually deleted
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session.delete('1')
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def test_session_key_is_read_only(self):
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def set_session_key(session):
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session.session_key = session._get_new_session_key()
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self.assertRaises(AttributeError, set_session_key, self.session)
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# Custom session expiry
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def test_default_expiry(self):
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# A normal session has a max age equal to settings
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self.assertEqual(self.session.get_expiry_age(), settings.SESSION_COOKIE_AGE)
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# So does a custom session with an idle expiration time of 0 (but it'll
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# expire at browser close)
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self.session.set_expiry(0)
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self.assertEqual(self.session.get_expiry_age(), settings.SESSION_COOKIE_AGE)
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def test_custom_expiry_seconds(self):
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modification = timezone.now()
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self.session.set_expiry(10)
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date = self.session.get_expiry_date(modification=modification)
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self.assertEqual(date, modification + timedelta(seconds=10))
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age = self.session.get_expiry_age(modification=modification)
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self.assertEqual(age, 10)
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def test_custom_expiry_timedelta(self):
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modification = timezone.now()
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# Mock timezone.now, because set_expiry calls it on this code path.
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original_now = timezone.now
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try:
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timezone.now = lambda: modification
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self.session.set_expiry(timedelta(seconds=10))
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finally:
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timezone.now = original_now
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date = self.session.get_expiry_date(modification=modification)
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self.assertEqual(date, modification + timedelta(seconds=10))
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age = self.session.get_expiry_age(modification=modification)
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self.assertEqual(age, 10)
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def test_custom_expiry_datetime(self):
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modification = timezone.now()
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self.session.set_expiry(modification + timedelta(seconds=10))
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date = self.session.get_expiry_date(modification=modification)
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self.assertEqual(date, modification + timedelta(seconds=10))
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age = self.session.get_expiry_age(modification=modification)
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self.assertEqual(age, 10)
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def test_custom_expiry_reset(self):
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self.session.set_expiry(None)
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self.session.set_expiry(10)
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self.session.set_expiry(None)
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self.assertEqual(self.session.get_expiry_age(), settings.SESSION_COOKIE_AGE)
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def test_get_expire_at_browser_close(self):
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# Tests get_expire_at_browser_close with different settings and different
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# set_expiry calls
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with override_settings(SESSION_EXPIRE_AT_BROWSER_CLOSE=False):
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self.session.set_expiry(10)
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self.assertFalse(self.session.get_expire_at_browser_close())
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self.session.set_expiry(0)
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self.assertTrue(self.session.get_expire_at_browser_close())
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self.session.set_expiry(None)
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self.assertFalse(self.session.get_expire_at_browser_close())
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with override_settings(SESSION_EXPIRE_AT_BROWSER_CLOSE=True):
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self.session.set_expiry(10)
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self.assertFalse(self.session.get_expire_at_browser_close())
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self.session.set_expiry(0)
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self.assertTrue(self.session.get_expire_at_browser_close())
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self.session.set_expiry(None)
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self.assertTrue(self.session.get_expire_at_browser_close())
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def test_decode(self):
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# Ensure we can decode what we encode
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data = {'a test key': 'a test value'}
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encoded = self.session.encode(data)
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self.assertEqual(self.session.decode(encoded), data)
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def test_decode_failure_logged_to_security(self):
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bad_encode = base64.b64encode(b'flaskdj:alkdjf')
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with patch_logger('django.security.SuspiciousSession', 'warning') as calls:
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self.assertEqual({}, self.session.decode(bad_encode))
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# check that the failed decode is logged
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self.assertEqual(len(calls), 1)
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self.assertIn('corrupted', calls[0])
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def test_actual_expiry(self):
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# this doesn't work with JSONSerializer (serializing timedelta)
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with override_settings(SESSION_SERIALIZER='django.contrib.sessions.serializers.PickleSerializer'):
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self.session = self.backend() # reinitialize after overriding settings
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# Regression test for #19200
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old_session_key = None
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new_session_key = None
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try:
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self.session['foo'] = 'bar'
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self.session.set_expiry(-timedelta(seconds=10))
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self.session.save()
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old_session_key = self.session.session_key
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# With an expiry date in the past, the session expires instantly.
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new_session = self.backend(self.session.session_key)
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new_session_key = new_session.session_key
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self.assertNotIn('foo', new_session)
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finally:
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self.session.delete(old_session_key)
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self.session.delete(new_session_key)
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class DatabaseSessionTests(SessionTestsMixin, TestCase):
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backend = DatabaseSession
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def test_session_str(self):
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"Session repr should be the session key."
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self.session['x'] = 1
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self.session.save()
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session_key = self.session.session_key
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s = Session.objects.get(session_key=session_key)
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self.assertEqual(force_text(s), session_key)
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def test_session_get_decoded(self):
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"""
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Test we can use Session.get_decoded to retrieve data stored
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in normal way
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"""
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self.session['x'] = 1
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self.session.save()
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s = Session.objects.get(session_key=self.session.session_key)
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self.assertEqual(s.get_decoded(), {'x': 1})
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def test_sessionmanager_save(self):
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"""
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Test SessionManager.save method
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"""
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# Create a session
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self.session['y'] = 1
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self.session.save()
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s = Session.objects.get(session_key=self.session.session_key)
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# Change it
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Session.objects.save(s.session_key, {'y': 2}, s.expire_date)
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# Clear cache, so that it will be retrieved from DB
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del self.session._session_cache
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self.assertEqual(self.session['y'], 2)
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@override_settings(SESSION_ENGINE="django.contrib.sessions.backends.db")
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def test_clearsessions_command(self):
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"""
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Test clearsessions command for clearing expired sessions.
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"""
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self.assertEqual(0, Session.objects.count())
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# One object in the future
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self.session['foo'] = 'bar'
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self.session.set_expiry(3600)
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self.session.save()
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# One object in the past
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other_session = self.backend()
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other_session['foo'] = 'bar'
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other_session.set_expiry(-3600)
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other_session.save()
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# Two sessions are in the database before clearsessions...
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self.assertEqual(2, Session.objects.count())
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management.call_command('clearsessions')
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# ... and one is deleted.
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self.assertEqual(1, Session.objects.count())
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@override_settings(USE_TZ=True)
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class DatabaseSessionWithTimeZoneTests(DatabaseSessionTests):
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pass
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class CacheDBSessionTests(SessionTestsMixin, TestCase):
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backend = CacheDBSession
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@unittest.skipIf('DummyCache' in
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settings.CACHES[settings.SESSION_CACHE_ALIAS]['BACKEND'],
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"Session saving tests require a real cache backend")
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def test_exists_searches_cache_first(self):
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self.session.save()
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with self.assertNumQueries(0):
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self.assertTrue(self.session.exists(self.session.session_key))
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# Some backends might issue a warning
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@ignore_warnings(module="django.core.cache.backends.base")
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def test_load_overlong_key(self):
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self.session._session_key = (string.ascii_letters + string.digits) * 20
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self.assertEqual(self.session.load(), {})
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@override_settings(SESSION_CACHE_ALIAS='sessions')
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def test_non_default_cache(self):
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# 21000 - CacheDB backend should respect SESSION_CACHE_ALIAS.
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self.assertRaises(InvalidCacheBackendError, self.backend)
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@override_settings(USE_TZ=True)
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class CacheDBSessionWithTimeZoneTests(CacheDBSessionTests):
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pass
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# Don't need DB flushing for these tests, so can use unittest.TestCase as base class
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class FileSessionTests(SessionTestsMixin, unittest.TestCase):
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backend = FileSession
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def setUp(self):
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# Do file session tests in an isolated directory, and kill it after we're done.
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self.original_session_file_path = settings.SESSION_FILE_PATH
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self.temp_session_store = settings.SESSION_FILE_PATH = tempfile.mkdtemp()
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# Reset the file session backend's internal caches
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if hasattr(self.backend, '_storage_path'):
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del self.backend._storage_path
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super(FileSessionTests, self).setUp()
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def tearDown(self):
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super(FileSessionTests, self).tearDown()
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settings.SESSION_FILE_PATH = self.original_session_file_path
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shutil.rmtree(self.temp_session_store)
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@override_settings(
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SESSION_FILE_PATH="/if/this/directory/exists/you/have/a/weird/computer")
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def test_configuration_check(self):
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del self.backend._storage_path
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# Make sure the file backend checks for a good storage dir
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self.assertRaises(ImproperlyConfigured, self.backend)
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def test_invalid_key_backslash(self):
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# Ensure we don't allow directory-traversal.
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# This is tested directly on _key_to_file, as load() will swallow
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# a SuspiciousOperation in the same way as an IOError - by creating
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# a new session, making it unclear whether the slashes were detected.
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self.assertRaises(InvalidSessionKey,
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self.backend()._key_to_file, "a\\b\\c")
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def test_invalid_key_forwardslash(self):
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# Ensure we don't allow directory-traversal
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self.assertRaises(InvalidSessionKey,
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self.backend()._key_to_file, "a/b/c")
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@override_settings(SESSION_ENGINE="django.contrib.sessions.backends.file")
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def test_clearsessions_command(self):
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"""
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Test clearsessions command for clearing expired sessions.
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"""
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storage_path = self.backend._get_storage_path()
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file_prefix = settings.SESSION_COOKIE_NAME
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def count_sessions():
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return len([session_file for session_file in os.listdir(storage_path)
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if session_file.startswith(file_prefix)])
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self.assertEqual(0, count_sessions())
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# One object in the future
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self.session['foo'] = 'bar'
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self.session.set_expiry(3600)
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self.session.save()
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# One object in the past
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other_session = self.backend()
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other_session['foo'] = 'bar'
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other_session.set_expiry(-3600)
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other_session.save()
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# Two sessions are in the filesystem before clearsessions...
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self.assertEqual(2, count_sessions())
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management.call_command('clearsessions')
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# ... and one is deleted.
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self.assertEqual(1, count_sessions())
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class CacheSessionTests(SessionTestsMixin, unittest.TestCase):
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backend = CacheSession
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# Some backends might issue a warning
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@ignore_warnings(module="django.core.cache.backends.base")
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def test_load_overlong_key(self):
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self.session._session_key = (string.ascii_letters + string.digits) * 20
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self.assertEqual(self.session.load(), {})
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def test_default_cache(self):
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self.session.save()
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self.assertNotEqual(caches['default'].get(self.session.cache_key), None)
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@override_settings(CACHES={
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'default': {
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'BACKEND': 'django.core.cache.backends.dummy.DummyCache',
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},
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'sessions': {
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'BACKEND': 'django.core.cache.backends.locmem.LocMemCache',
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'LOCATION': 'session',
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},
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}, SESSION_CACHE_ALIAS='sessions')
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def test_non_default_cache(self):
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# Re-initialize the session backend to make use of overridden settings.
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self.session = self.backend()
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self.session.save()
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self.assertEqual(caches['default'].get(self.session.cache_key), None)
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self.assertNotEqual(caches['sessions'].get(self.session.cache_key), None)
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class SessionMiddlewareTests(TestCase):
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@override_settings(SESSION_COOKIE_SECURE=True)
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def test_secure_session_cookie(self):
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request = RequestFactory().get('/')
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response = HttpResponse('Session test')
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middleware = SessionMiddleware()
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# Simulate a request the modifies the session
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middleware.process_request(request)
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request.session['hello'] = 'world'
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# Handle the response through the middleware
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response = middleware.process_response(request, response)
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self.assertTrue(
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response.cookies[settings.SESSION_COOKIE_NAME]['secure'])
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@override_settings(SESSION_COOKIE_HTTPONLY=True)
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def test_httponly_session_cookie(self):
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|
request = RequestFactory().get('/')
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|
response = HttpResponse('Session test')
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middleware = SessionMiddleware()
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|
|
|
# Simulate a request the modifies the session
|
|
middleware.process_request(request)
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request.session['hello'] = 'world'
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|
|
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# Handle the response through the middleware
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|
response = middleware.process_response(request, response)
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self.assertTrue(
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|
response.cookies[settings.SESSION_COOKIE_NAME]['httponly'])
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self.assertIn(http_cookies.Morsel._reserved['httponly'],
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|
str(response.cookies[settings.SESSION_COOKIE_NAME]))
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|
|
|
@override_settings(SESSION_COOKIE_HTTPONLY=False)
|
|
def test_no_httponly_session_cookie(self):
|
|
request = RequestFactory().get('/')
|
|
response = HttpResponse('Session test')
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|
middleware = SessionMiddleware()
|
|
|
|
# Simulate a request the modifies the session
|
|
middleware.process_request(request)
|
|
request.session['hello'] = 'world'
|
|
|
|
# Handle the response through the middleware
|
|
response = middleware.process_response(request, response)
|
|
self.assertFalse(response.cookies[settings.SESSION_COOKIE_NAME]['httponly'])
|
|
|
|
self.assertNotIn(http_cookies.Morsel._reserved['httponly'],
|
|
str(response.cookies[settings.SESSION_COOKIE_NAME]))
|
|
|
|
def test_session_save_on_500(self):
|
|
request = RequestFactory().get('/')
|
|
response = HttpResponse('Horrible error')
|
|
response.status_code = 500
|
|
middleware = SessionMiddleware()
|
|
|
|
# Simulate a request the modifies the session
|
|
middleware.process_request(request)
|
|
request.session['hello'] = 'world'
|
|
|
|
# Handle the response through the middleware
|
|
response = middleware.process_response(request, response)
|
|
|
|
# Check that the value wasn't saved above.
|
|
self.assertNotIn('hello', request.session.load())
|
|
|
|
def test_session_delete_on_end(self):
|
|
request = RequestFactory().get('/')
|
|
response = HttpResponse('Session test')
|
|
middleware = SessionMiddleware()
|
|
|
|
# Before deleting, there has to be an existing cookie
|
|
request.COOKIES[settings.SESSION_COOKIE_NAME] = 'abc'
|
|
|
|
# Simulate a request that ends the session
|
|
middleware.process_request(request)
|
|
request.session.flush()
|
|
|
|
# Handle the response through the middleware
|
|
response = middleware.process_response(request, response)
|
|
|
|
# Check that the cookie was deleted, not recreated.
|
|
# A deleted cookie header looks like:
|
|
# Set-Cookie: sessionid=; expires=Thu, 01-Jan-1970 00:00:00 GMT; Max-Age=0; Path=/
|
|
self.assertEqual(
|
|
'Set-Cookie: {}={}; expires=Thu, 01-Jan-1970 00:00:00 GMT; '
|
|
'Max-Age=0; Path=/'.format(
|
|
settings.SESSION_COOKIE_NAME,
|
|
'""' if sys.version_info >= (3, 5) else '',
|
|
),
|
|
str(response.cookies[settings.SESSION_COOKIE_NAME])
|
|
)
|
|
|
|
|
|
# Don't need DB flushing for these tests, so can use unittest.TestCase as base class
|
|
class CookieSessionTests(SessionTestsMixin, unittest.TestCase):
|
|
|
|
backend = CookieSession
|
|
|
|
def test_save(self):
|
|
"""
|
|
This test tested exists() in the other session backends, but that
|
|
doesn't make sense for us.
|
|
"""
|
|
pass
|
|
|
|
def test_cycle(self):
|
|
"""
|
|
This test tested cycle_key() which would create a new session
|
|
key for the same session data. But we can't invalidate previously
|
|
signed cookies (other than letting them expire naturally) so
|
|
testing for this behavior is meaningless.
|
|
"""
|
|
pass
|
|
|
|
@unittest.expectedFailure
|
|
def test_actual_expiry(self):
|
|
# The cookie backend doesn't handle non-default expiry dates, see #19201
|
|
super(CookieSessionTests, self).test_actual_expiry()
|
|
|
|
def test_unpickling_exception(self):
|
|
# signed_cookies backend should handle unpickle exceptions gracefully
|
|
# by creating a new session
|
|
self.assertEqual(self.session.serializer, JSONSerializer)
|
|
self.session.save()
|
|
|
|
self.session.serializer = PickleSerializer
|
|
self.session.load()
|