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#!/usr/bin/python2.4
#
# Copyright 2010 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Discovery document tests
Unit tests for objects created from discovery documents.
"""
__author__ = 'jcgregorio@google.com (Joe Gregorio)'
import base64
import datetime
import httplib2
import mox
import os
import time
import unittest
import urlparse
try:
from urlparse import parse_qs
except ImportError:
from cgi import parse_qs
import dev_appserver
dev_appserver.fix_sys_path()
import webapp2
from apiclient.http import HttpMockSequence
from google.appengine.api import apiproxy_stub
from google.appengine.api import apiproxy_stub_map
from google.appengine.api import app_identity
from google.appengine.api import memcache
from google.appengine.api import users
from google.appengine.api.memcache import memcache_stub
from google.appengine.ext import db
from google.appengine.ext import ndb
from google.appengine.ext import testbed
from google.appengine.runtime import apiproxy_errors
from oauth2client import appengine
from oauth2client import GOOGLE_TOKEN_URI
from oauth2client.anyjson import simplejson
from oauth2client.clientsecrets import _loadfile
from oauth2client.clientsecrets import InvalidClientSecretsError
from oauth2client.appengine import AppAssertionCredentials
from oauth2client.appengine import CredentialsModel
from oauth2client.appengine import CredentialsNDBModel
from oauth2client.appengine import FlowNDBProperty
from oauth2client.appengine import FlowProperty
from oauth2client.appengine import OAuth2Decorator
from oauth2client.appengine import StorageByKeyName
from oauth2client.appengine import oauth2decorator_from_clientsecrets
from oauth2client.client import AccessTokenRefreshError
from oauth2client.client import Credentials
from oauth2client.client import FlowExchangeError
from oauth2client.client import OAuth2Credentials
from oauth2client.client import flow_from_clientsecrets
from webtest import TestApp
DATA_DIR = os.path.join(os.path.dirname(__file__), 'data')
def datafile(filename):
return os.path.join(DATA_DIR, filename)
def load_and_cache(existing_file, fakename, cache_mock):
client_type, client_info = _loadfile(datafile(existing_file))
cache_mock.cache[fakename] = {client_type: client_info}
class CacheMock(object):
def __init__(self):
self.cache = {}
def get(self, key, namespace=''):
# ignoring namespace for easier testing
return self.cache.get(key, None)
def set(self, key, value, namespace=''):
# ignoring namespace for easier testing
self.cache[key] = value
class UserMock(object):
"""Mock the app engine user service"""
def __call__(self):
return self
def user_id(self):
return 'foo_user'
class UserNotLoggedInMock(object):
"""Mock the app engine user service"""
def __call__(self):
return None
class Http2Mock(object):
"""Mock httplib2.Http"""
status = 200
content = {
'access_token': 'foo_access_token',
'refresh_token': 'foo_refresh_token',
'expires_in': 3600,
}
def request(self, token_uri, method, body, headers, *args, **kwargs):
self.body = body
self.headers = headers
return (self, simplejson.dumps(self.content))
class TestAppAssertionCredentials(unittest.TestCase):
account_name = "service_account_name@appspot.com"
signature = "signature"
class AppIdentityStubImpl(apiproxy_stub.APIProxyStub):
def __init__(self):
super(TestAppAssertionCredentials.AppIdentityStubImpl, self).__init__(
'app_identity_service')
def _Dynamic_GetAccessToken(self, request, response):
response.set_access_token('a_token_123')
response.set_expiration_time(time.time() + 1800)
class ErroringAppIdentityStubImpl(apiproxy_stub.APIProxyStub):
def __init__(self):
super(TestAppAssertionCredentials.ErroringAppIdentityStubImpl, self).__init__(
'app_identity_service')
def _Dynamic_GetAccessToken(self, request, response):
raise app_identity.BackendDeadlineExceeded()
def test_raise_correct_type_of_exception(self):
app_identity_stub = self.ErroringAppIdentityStubImpl()
apiproxy_stub_map.apiproxy = apiproxy_stub_map.APIProxyStubMap()
apiproxy_stub_map.apiproxy.RegisterStub('app_identity_service',
app_identity_stub)
apiproxy_stub_map.apiproxy.RegisterStub(
'memcache', memcache_stub.MemcacheServiceStub())
scope = 'http://www.googleapis.com/scope'
try:
credentials = AppAssertionCredentials(scope)
http = httplib2.Http()
credentials.refresh(http)
self.fail('Should have raised an AccessTokenRefreshError')
except AccessTokenRefreshError:
pass
def test_get_access_token_on_refresh(self):
app_identity_stub = self.AppIdentityStubImpl()
apiproxy_stub_map.apiproxy = apiproxy_stub_map.APIProxyStubMap()
apiproxy_stub_map.apiproxy.RegisterStub("app_identity_service",
app_identity_stub)
apiproxy_stub_map.apiproxy.RegisterStub(
'memcache', memcache_stub.MemcacheServiceStub())
scope = [
"http://www.googleapis.com/scope",
"http://www.googleapis.com/scope2"]
credentials = AppAssertionCredentials(scope)
http = httplib2.Http()
credentials.refresh(http)
self.assertEqual('a_token_123', credentials.access_token)
json = credentials.to_json()
credentials = Credentials.new_from_json(json)
self.assertEqual(
'http://www.googleapis.com/scope http://www.googleapis.com/scope2',
credentials.scope)
scope = "http://www.googleapis.com/scope http://www.googleapis.com/scope2"
credentials = AppAssertionCredentials(scope)
http = httplib2.Http()
credentials.refresh(http)
self.assertEqual('a_token_123', credentials.access_token)
self.assertEqual(
'http://www.googleapis.com/scope http://www.googleapis.com/scope2',
credentials.scope)
class TestFlowModel(db.Model):
flow = FlowProperty()
class FlowPropertyTest(unittest.TestCase):
def setUp(self):
self.testbed = testbed.Testbed()
self.testbed.activate()
self.testbed.init_datastore_v3_stub()
def tearDown(self):
self.testbed.deactivate()
def test_flow_get_put(self):
instance = TestFlowModel(
flow=flow_from_clientsecrets(datafile('client_secrets.json'), 'foo',
redirect_uri='oob'),
key_name='foo'
)
instance.put()
retrieved = TestFlowModel.get_by_key_name('foo')
self.assertEqual('foo_client_id', retrieved.flow.client_id)
class TestFlowNDBModel(ndb.Model):
flow = FlowNDBProperty()
class FlowNDBPropertyTest(unittest.TestCase):
def setUp(self):
self.testbed = testbed.Testbed()
self.testbed.activate()
self.testbed.init_datastore_v3_stub()
self.testbed.init_memcache_stub()
def tearDown(self):
self.testbed.deactivate()
def test_flow_get_put(self):
instance = TestFlowNDBModel(
flow=flow_from_clientsecrets(datafile('client_secrets.json'), 'foo',
redirect_uri='oob'),
id='foo'
)
instance.put()
retrieved = TestFlowNDBModel.get_by_id('foo')
self.assertEqual('foo_client_id', retrieved.flow.client_id)
def _http_request(*args, **kwargs):
resp = httplib2.Response({'status': '200'})
content = simplejson.dumps({'access_token': 'bar'})
return resp, content
class StorageByKeyNameTest(unittest.TestCase):
def setUp(self):
self.testbed = testbed.Testbed()
self.testbed.activate()
self.testbed.init_datastore_v3_stub()
self.testbed.init_memcache_stub()
self.testbed.init_user_stub()
access_token = 'foo'
client_id = 'some_client_id'
client_secret = 'cOuDdkfjxxnv+'
refresh_token = '1/0/a.df219fjls0'
token_expiry = datetime.datetime.utcnow()
user_agent = 'refresh_checker/1.0'
self.credentials = OAuth2Credentials(
access_token, client_id, client_secret,
refresh_token, token_expiry, GOOGLE_TOKEN_URI,
user_agent)
def tearDown(self):
self.testbed.deactivate()
def test_get_and_put_simple(self):
storage = StorageByKeyName(
CredentialsModel, 'foo', 'credentials')
self.assertEqual(None, storage.get())
self.credentials.set_store(storage)
self.credentials._refresh(_http_request)
credmodel = CredentialsModel.get_by_key_name('foo')
self.assertEqual('bar', credmodel.credentials.access_token)
def test_get_and_put_cached(self):
storage = StorageByKeyName(
CredentialsModel, 'foo', 'credentials', cache=memcache)
self.assertEqual(None, storage.get())
self.credentials.set_store(storage)
self.credentials._refresh(_http_request)
credmodel = CredentialsModel.get_by_key_name('foo')
self.assertEqual('bar', credmodel.credentials.access_token)
# Now remove the item from the cache.
memcache.delete('foo')
# Check that getting refreshes the cache.
credentials = storage.get()
self.assertEqual('bar', credentials.access_token)
self.assertNotEqual(None, memcache.get('foo'))
# Deleting should clear the cache.
storage.delete()
credentials = storage.get()
self.assertEqual(None, credentials)
self.assertEqual(None, memcache.get('foo'))
def test_get_and_put_ndb(self):
# Start empty
storage = StorageByKeyName(
CredentialsNDBModel, 'foo', 'credentials')
self.assertEqual(None, storage.get())
# Refresh storage and retrieve without using storage
self.credentials.set_store(storage)
self.credentials._refresh(_http_request)
credmodel = CredentialsNDBModel.get_by_id('foo')
self.assertEqual('bar', credmodel.credentials.access_token)
self.assertEqual(credmodel.credentials.to_json(),
self.credentials.to_json())
def test_delete_ndb(self):
# Start empty
storage = StorageByKeyName(
CredentialsNDBModel, 'foo', 'credentials')
self.assertEqual(None, storage.get())
# Add credentials to model with storage, and check equivalent w/o storage
storage.put(self.credentials)
credmodel = CredentialsNDBModel.get_by_id('foo')
self.assertEqual(credmodel.credentials.to_json(),
self.credentials.to_json())
# Delete and make sure empty
storage.delete()
self.assertEqual(None, storage.get())
def test_get_and_put_mixed_ndb_storage_db_get(self):
# Start empty
storage = StorageByKeyName(
CredentialsNDBModel, 'foo', 'credentials')
self.assertEqual(None, storage.get())
# Set NDB store and refresh to add to storage
self.credentials.set_store(storage)
self.credentials._refresh(_http_request)
# Retrieve same key from DB model to confirm mixing works
credmodel = CredentialsModel.get_by_key_name('foo')
self.assertEqual('bar', credmodel.credentials.access_token)
self.assertEqual(self.credentials.to_json(),
credmodel.credentials.to_json())
def test_get_and_put_mixed_db_storage_ndb_get(self):
# Start empty
storage = StorageByKeyName(
CredentialsModel, 'foo', 'credentials')
self.assertEqual(None, storage.get())
# Set DB store and refresh to add to storage
self.credentials.set_store(storage)
self.credentials._refresh(_http_request)
# Retrieve same key from NDB model to confirm mixing works
credmodel = CredentialsNDBModel.get_by_id('foo')
self.assertEqual('bar', credmodel.credentials.access_token)
self.assertEqual(self.credentials.to_json(),
credmodel.credentials.to_json())
def test_delete_db_ndb_mixed(self):
# Start empty
storage_ndb = StorageByKeyName(
CredentialsNDBModel, 'foo', 'credentials')
storage = StorageByKeyName(
CredentialsModel, 'foo', 'credentials')
# First DB, then NDB
self.assertEqual(None, storage.get())
storage.put(self.credentials)
self.assertNotEqual(None, storage.get())
storage_ndb.delete()
self.assertEqual(None, storage.get())
# First NDB, then DB
self.assertEqual(None, storage_ndb.get())
storage_ndb.put(self.credentials)
storage.delete()
self.assertNotEqual(None, storage_ndb.get())
# NDB uses memcache and an instance cache (Context)
ndb.get_context().clear_cache()
memcache.flush_all()
self.assertEqual(None, storage_ndb.get())
class MockRequest(object):
url = 'https://example.org'
def relative_url(self, rel):
return self.url + rel
class MockRequestHandler(object):
request = MockRequest()
class DecoratorTests(unittest.TestCase):
def setUp(self):
self.testbed = testbed.Testbed()
self.testbed.activate()
self.testbed.init_datastore_v3_stub()
self.testbed.init_memcache_stub()
self.testbed.init_user_stub()
decorator = OAuth2Decorator(client_id='foo_client_id',
client_secret='foo_client_secret',
scope=['foo_scope', 'bar_scope'],
user_agent='foo')
self._finish_setup(decorator, user_mock=UserMock)
def _finish_setup(self, decorator, user_mock):
self.decorator = decorator
class TestRequiredHandler(webapp2.RequestHandler):
@decorator.oauth_required
def get(self):
pass
class TestAwareHandler(webapp2.RequestHandler):
@decorator.oauth_aware
def get(self, *args, **kwargs):
self.response.out.write('Hello World!')
assert(kwargs['year'] == '2012')
assert(kwargs['month'] == '01')
application = webapp2.WSGIApplication([
('/oauth2callback', self.decorator.callback_handler()),
('/foo_path', TestRequiredHandler),
webapp2.Route(r'/bar_path/<year:\d{4}>/<month:\d{2}>',
handler=TestAwareHandler, name='bar')],
debug=True)
self.app = TestApp(application, extra_environ={
'wsgi.url_scheme': 'http',
'HTTP_HOST': 'localhost',
})
users.get_current_user = user_mock()
self.httplib2_orig = httplib2.Http
httplib2.Http = Http2Mock
def tearDown(self):
self.testbed.deactivate()
httplib2.Http = self.httplib2_orig
def test_required(self):
# An initial request to an oauth_required decorated path should be a
# redirect to start the OAuth dance.
response = self.app.get('http://localhost/foo_path')
self.assertTrue(response.status.startswith('302'))
q = parse_qs(response.headers['Location'].split('?', 1)[1])
self.assertEqual('http://localhost/oauth2callback', q['redirect_uri'][0])
self.assertEqual('foo_client_id', q['client_id'][0])
self.assertEqual('foo_scope bar_scope', q['scope'][0])
self.assertEqual('http://localhost/foo_path',
q['state'][0].rsplit(':', 1)[0])
self.assertEqual('code', q['response_type'][0])
self.assertEqual(False, self.decorator.has_credentials())
m = mox.Mox()
m.StubOutWithMock(appengine, '_parse_state_value')
appengine._parse_state_value('foo_path:xsrfkey123',
mox.IgnoreArg()).AndReturn('foo_path')
m.ReplayAll()
# Now simulate the callback to /oauth2callback.
response = self.app.get('/oauth2callback', {
'code': 'foo_access_code',
'state': 'foo_path:xsrfkey123',
})
self.assertEqual('http://localhost/foo_path', response.headers['Location'])
self.assertEqual(None, self.decorator.credentials)
m.UnsetStubs()
m.VerifyAll()
# Now requesting the decorated path should work.
response = self.app.get('/foo_path')
self.assertEqual('200 OK', response.status)
self.assertEqual(True, self.decorator.has_credentials())
self.assertEqual('foo_refresh_token',
self.decorator.credentials.refresh_token)
self.assertEqual('foo_access_token',
self.decorator.credentials.access_token)
# Invalidate the stored Credentials.
self.decorator.credentials.invalid = True
self.decorator.credentials.store.put(self.decorator.credentials)
# Invalid Credentials should start the OAuth dance again.
response = self.app.get('/foo_path')
self.assertTrue(response.status.startswith('302'))
q = parse_qs(response.headers['Location'].split('?', 1)[1])
self.assertEqual('http://localhost/oauth2callback', q['redirect_uri'][0])
def test_storage_delete(self):
# An initial request to an oauth_required decorated path should be a
# redirect to start the OAuth dance.
response = self.app.get('/foo_path')
self.assertTrue(response.status.startswith('302'))
m = mox.Mox()
m.StubOutWithMock(appengine, '_parse_state_value')
appengine._parse_state_value('foo_path:xsrfkey123',
mox.IgnoreArg()).AndReturn('foo_path')
m.ReplayAll()
# Now simulate the callback to /oauth2callback.
response = self.app.get('/oauth2callback', {
'code': 'foo_access_code',
'state': 'foo_path:xsrfkey123',
})
self.assertEqual('http://localhost/foo_path', response.headers['Location'])
self.assertEqual(None, self.decorator.credentials)
# Now requesting the decorated path should work.
response = self.app.get('/foo_path')
# Invalidate the stored Credentials.
self.decorator.credentials.store.delete()
# Invalid Credentials should start the OAuth dance again.
response = self.app.get('/foo_path')
self.assertTrue(response.status.startswith('302'))
m.UnsetStubs()
m.VerifyAll()
def test_aware(self):
# An initial request to an oauth_aware decorated path should not redirect.
response = self.app.get('http://localhost/bar_path/2012/01')
self.assertEqual('Hello World!', response.body)
self.assertEqual('200 OK', response.status)
self.assertEqual(False, self.decorator.has_credentials())
url = self.decorator.authorize_url()
q = parse_qs(url.split('?', 1)[1])
self.assertEqual('http://localhost/oauth2callback', q['redirect_uri'][0])
self.assertEqual('foo_client_id', q['client_id'][0])
self.assertEqual('foo_scope bar_scope', q['scope'][0])
self.assertEqual('http://localhost/bar_path/2012/01',
q['state'][0].rsplit(':', 1)[0])
self.assertEqual('code', q['response_type'][0])
m = mox.Mox()
m.StubOutWithMock(appengine, '_parse_state_value')
appengine._parse_state_value('bar_path:xsrfkey456',
mox.IgnoreArg()).AndReturn('bar_path')
m.ReplayAll()
# Now simulate the callback to /oauth2callback.
url = self.decorator.authorize_url()
response = self.app.get('/oauth2callback', {
'code': 'foo_access_code',
'state': 'bar_path:xsrfkey456',
})
self.assertEqual('http://localhost/bar_path', response.headers['Location'])
self.assertEqual(False, self.decorator.has_credentials())
m.UnsetStubs()
m.VerifyAll()
# Now requesting the decorated path will have credentials.
response = self.app.get('/bar_path/2012/01')
self.assertEqual('200 OK', response.status)
self.assertEqual('Hello World!', response.body)
self.assertEqual(True, self.decorator.has_credentials())
self.assertEqual('foo_refresh_token',
self.decorator.credentials.refresh_token)
self.assertEqual('foo_access_token',
self.decorator.credentials.access_token)
def test_error_in_step2(self):
# An initial request to an oauth_aware decorated path should not redirect.
response = self.app.get('/bar_path/2012/01')
url = self.decorator.authorize_url()
response = self.app.get('/oauth2callback', {
'error': 'Bad<Stuff>Happened\''
})
self.assertEqual('200 OK', response.status)
self.assertTrue('Bad&lt;Stuff&gt;Happened&#39;' in response.body)
def test_kwargs_are_passed_to_underlying_flow(self):
decorator = OAuth2Decorator(client_id='foo_client_id',
client_secret='foo_client_secret',
user_agent='foo_user_agent',
scope=['foo_scope', 'bar_scope'],
access_type='offline',
approval_prompt='force',
revoke_uri='dummy_revoke_uri')
request_handler = MockRequestHandler()
decorator._create_flow(request_handler)
self.assertEqual('https://example.org/oauth2callback',
decorator.flow.redirect_uri)
self.assertEqual('offline', decorator.flow.params['access_type'])
self.assertEqual('force', decorator.flow.params['approval_prompt'])
self.assertEqual('foo_user_agent', decorator.flow.user_agent)
self.assertEqual('dummy_revoke_uri', decorator.flow.revoke_uri)
self.assertEqual(None, decorator.flow.params.get('user_agent', None))
def test_decorator_from_client_secrets(self):
decorator = oauth2decorator_from_clientsecrets(
datafile('client_secrets.json'),
scope=['foo_scope', 'bar_scope'])
self._finish_setup(decorator, user_mock=UserMock)
self.assertFalse(decorator._in_error)
self.decorator = decorator
self.test_required()
http = self.decorator.http()
self.assertEquals('foo_access_token', http.request.credentials.access_token)
# revoke_uri is not required
self.assertEqual(self.decorator._revoke_uri,
'https://accounts.google.com/o/oauth2/revoke')
self.assertEqual(self.decorator._revoke_uri,
self.decorator.credentials.revoke_uri)
def test_decorator_from_cached_client_secrets(self):
cache_mock = CacheMock()
load_and_cache('client_secrets.json', 'secret', cache_mock)
decorator = oauth2decorator_from_clientsecrets(
# filename, scope, message=None, cache=None
'secret', '', cache=cache_mock)
self.assertFalse(decorator._in_error)
def test_decorator_from_client_secrets_not_logged_in_required(self):
decorator = oauth2decorator_from_clientsecrets(
datafile('client_secrets.json'),
scope=['foo_scope', 'bar_scope'], message='NotLoggedInMessage')
self.decorator = decorator
self._finish_setup(decorator, user_mock=UserNotLoggedInMock)
self.assertFalse(decorator._in_error)
# An initial request to an oauth_required decorated path should be a
# redirect to login.
response = self.app.get('/foo_path')
self.assertTrue(response.status.startswith('302'))
self.assertTrue('Login' in str(response))
def test_decorator_from_client_secrets_not_logged_in_aware(self):
decorator = oauth2decorator_from_clientsecrets(
datafile('client_secrets.json'),
scope=['foo_scope', 'bar_scope'], message='NotLoggedInMessage')
self.decorator = decorator
self._finish_setup(decorator, user_mock=UserNotLoggedInMock)
# An initial request to an oauth_aware decorated path should be a
# redirect to login.
response = self.app.get('/bar_path/2012/03')
self.assertTrue(response.status.startswith('302'))
self.assertTrue('Login' in str(response))
def test_decorator_from_unfilled_client_secrets_required(self):
MESSAGE = 'File is missing'
try:
decorator = oauth2decorator_from_clientsecrets(
datafile('unfilled_client_secrets.json'),
scope=['foo_scope', 'bar_scope'], message=MESSAGE)
except InvalidClientSecretsError:
pass
def test_decorator_from_unfilled_client_secrets_aware(self):
MESSAGE = 'File is missing'
try:
decorator = oauth2decorator_from_clientsecrets(
datafile('unfilled_client_secrets.json'),
scope=['foo_scope', 'bar_scope'], message=MESSAGE)
except InvalidClientSecretsError:
pass
class DecoratorXsrfSecretTests(unittest.TestCase):
"""Test xsrf_secret_key."""
def setUp(self):
self.testbed = testbed.Testbed()
self.testbed.activate()
self.testbed.init_datastore_v3_stub()
self.testbed.init_memcache_stub()
def tearDown(self):
self.testbed.deactivate()
def test_build_and_parse_state(self):
secret = appengine.xsrf_secret_key()
# Secret shouldn't change from call to call.
secret2 = appengine.xsrf_secret_key()
self.assertEqual(secret, secret2)
# Secret shouldn't change if memcache goes away.
memcache.delete(appengine.XSRF_MEMCACHE_ID,
namespace=appengine.OAUTH2CLIENT_NAMESPACE)
secret3 = appengine.xsrf_secret_key()
self.assertEqual(secret2, secret3)
# Secret should change if both memcache and the model goes away.
memcache.delete(appengine.XSRF_MEMCACHE_ID,
namespace=appengine.OAUTH2CLIENT_NAMESPACE)
model = appengine.SiteXsrfSecretKey.get_or_insert('site')
model.delete()
secret4 = appengine.xsrf_secret_key()
self.assertNotEqual(secret3, secret4)
def test_ndb_insert_db_get(self):
secret = appengine._generate_new_xsrf_secret_key()
appengine.SiteXsrfSecretKeyNDB(id='site', secret=secret).put()
site_key = appengine.SiteXsrfSecretKey.get_by_key_name('site')
self.assertEqual(site_key.secret, secret)
def test_db_insert_ndb_get(self):
secret = appengine._generate_new_xsrf_secret_key()
appengine.SiteXsrfSecretKey(key_name='site', secret=secret).put()
site_key = appengine.SiteXsrfSecretKeyNDB.get_by_id('site')
self.assertEqual(site_key.secret, secret)
class DecoratorXsrfProtectionTests(unittest.TestCase):
"""Test _build_state_value and _parse_state_value."""
def setUp(self):
self.testbed = testbed.Testbed()
self.testbed.activate()
self.testbed.init_datastore_v3_stub()
self.testbed.init_memcache_stub()
def tearDown(self):
self.testbed.deactivate()
def test_build_and_parse_state(self):
state = appengine._build_state_value(MockRequestHandler(), UserMock())
self.assertEqual(
'https://example.org',
appengine._parse_state_value(state, UserMock()))
self.assertRaises(appengine.InvalidXsrfTokenError,
appengine._parse_state_value, state[1:], UserMock())
if __name__ == '__main__':
unittest.main()