152 lines
6.4 KiB
Python
152 lines
6.4 KiB
Python
from django.contrib.messages import constants
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from django.contrib.messages.storage.fallback import (
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CookieStorage, FallbackStorage,
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)
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from django.test import SimpleTestCase
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from .base import BaseTests
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from .test_cookie import set_cookie_data, stored_cookie_messages_count
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from .test_session import set_session_data, stored_session_messages_count
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class FallbackTests(BaseTests, SimpleTestCase):
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storage_class = FallbackStorage
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def get_request(self):
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self.session = {}
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request = super(FallbackTests, self).get_request()
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request.session = self.session
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return request
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def get_cookie_storage(self, storage):
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return storage.storages[-2]
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def get_session_storage(self, storage):
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return storage.storages[-1]
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def stored_cookie_messages_count(self, storage, response):
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return stored_cookie_messages_count(self.get_cookie_storage(storage), response)
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def stored_session_messages_count(self, storage, response):
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return stored_session_messages_count(self.get_session_storage(storage))
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def stored_messages_count(self, storage, response):
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"""
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Return the storage totals from both cookie and session backends.
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"""
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return (
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self.stored_cookie_messages_count(storage, response) +
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self.stored_session_messages_count(storage, response)
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)
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def test_get(self):
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request = self.get_request()
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storage = self.storage_class(request)
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cookie_storage = self.get_cookie_storage(storage)
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# Set initial cookie data.
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example_messages = [str(i) for i in range(5)]
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set_cookie_data(cookie_storage, example_messages)
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# Overwrite the _get method of the fallback storage to prove it is not
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# used (it would cause a TypeError: 'NoneType' object is not callable).
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self.get_session_storage(storage)._get = None
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self.assertEqual(list(storage), example_messages)
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def test_get_empty(self):
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request = self.get_request()
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storage = self.storage_class(request)
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# Overwrite the _get method of the fallback storage to prove it is not
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# used (it would cause a TypeError: 'NoneType' object is not callable).
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self.get_session_storage(storage)._get = None
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self.assertEqual(list(storage), [])
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def test_get_fallback(self):
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request = self.get_request()
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storage = self.storage_class(request)
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cookie_storage = self.get_cookie_storage(storage)
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session_storage = self.get_session_storage(storage)
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# Set initial cookie and session data.
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example_messages = [str(i) for i in range(5)]
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set_cookie_data(cookie_storage, example_messages[:4] + [CookieStorage.not_finished])
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set_session_data(session_storage, example_messages[4:])
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self.assertEqual(list(storage), example_messages)
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def test_get_fallback_only(self):
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request = self.get_request()
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storage = self.storage_class(request)
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cookie_storage = self.get_cookie_storage(storage)
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session_storage = self.get_session_storage(storage)
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# Set initial cookie and session data.
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example_messages = [str(i) for i in range(5)]
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set_cookie_data(cookie_storage, [CookieStorage.not_finished], encode_empty=True)
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set_session_data(session_storage, example_messages)
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self.assertEqual(list(storage), example_messages)
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def test_flush_used_backends(self):
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request = self.get_request()
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storage = self.storage_class(request)
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cookie_storage = self.get_cookie_storage(storage)
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session_storage = self.get_session_storage(storage)
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# Set initial cookie and session data.
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set_cookie_data(cookie_storage, ['cookie', CookieStorage.not_finished])
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set_session_data(session_storage, ['session'])
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# When updating, previously used but no longer needed backends are
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# flushed.
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response = self.get_response()
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list(storage)
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storage.update(response)
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session_storing = self.stored_session_messages_count(storage, response)
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self.assertEqual(session_storing, 0)
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def test_no_fallback(self):
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"""
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(1) A short number of messages whose data size doesn't exceed what is
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allowed in a cookie will all be stored in the CookieBackend.
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(2) If the CookieBackend can store all messages, the SessionBackend
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won't be written to at all.
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"""
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storage = self.get_storage()
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response = self.get_response()
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# Overwrite the _store method of the fallback storage to prove it isn't
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# used (it would cause a TypeError: 'NoneType' object is not callable).
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self.get_session_storage(storage)._store = None
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for i in range(5):
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storage.add(constants.INFO, str(i) * 100)
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storage.update(response)
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cookie_storing = self.stored_cookie_messages_count(storage, response)
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self.assertEqual(cookie_storing, 5)
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session_storing = self.stored_session_messages_count(storage, response)
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self.assertEqual(session_storing, 0)
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def test_session_fallback(self):
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"""
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If the data exceeds what is allowed in a cookie, messages which did
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not fit are stored in the SessionBackend.
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"""
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storage = self.get_storage()
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response = self.get_response()
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# see comment in CookieTests.test_cookie_max_length()
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msg_size = int((CookieStorage.max_cookie_size - 54) / 4.5 - 37)
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for i in range(5):
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storage.add(constants.INFO, str(i) * msg_size)
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storage.update(response)
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cookie_storing = self.stored_cookie_messages_count(storage, response)
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self.assertEqual(cookie_storing, 4)
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session_storing = self.stored_session_messages_count(storage, response)
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self.assertEqual(session_storing, 1)
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def test_session_fallback_only(self):
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"""
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Large messages, none of which fit in a cookie, are stored in the
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SessionBackend (and nothing is stored in the CookieBackend).
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"""
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storage = self.get_storage()
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response = self.get_response()
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storage.add(constants.INFO, 'x' * 5000)
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storage.update(response)
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cookie_storing = self.stored_cookie_messages_count(storage, response)
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self.assertEqual(cookie_storing, 0)
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session_storing = self.stored_session_messages_count(storage, response)
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self.assertEqual(session_storing, 1)
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