Google App引擎：Unity Works鼻子测试失败

Question

I've wrote this simple code to test my model:

class NDBTestCase(unittest.TestCase):
    def setUp(self):
        logging.getLogger().setLevel(logging.INFO)
        # First, create an instance of the Testbed class.
        self.testbed = testbed.Testbed()
        # Then activate the testbed, which prepares the service stubs for use.
        self.testbed.activate()
        # Next, declare which service stubs you want to use.
        self.testbed.init_datastore_v3_stub()
        self.testbed.init_memcache_stub()
        self.owner = m_User(username="owner")
        self.owner.put()


    def tearDown(self):
        self.testbed.deactivate()


    def testClub(self):
        # this id is a manually assigned
        club = m_Club(id="1", name="test", email="test@test.com", description="desc", url="example.com",
                      owners=[self.owner.key], training_type=["balance", "stability"], tags=["test", "trento"])
        club.put()

in the models the owners is like this owners = ndb.KeyProperty(kind="User", repeated=True)

if i run this code with unittest it works perfectly. I tried to run it with unitest and nosegae and it fails for a problem with the Key

Traceback (most recent call last):
  File "/Users/stefano/Documents/SW/gymcentral/tester_ndb.py", line 25, in setUp
    self.owner.put()
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/model.py", line 3379, in _put
    return self._put_async(**ctx_options).get_result()
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/tasklets.py", line 325, in get_result
    self.check_success()
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/tasklets.py", line 368, in _help_tasklet_along
    value = gen.throw(exc.__class__, exc, tb)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/context.py", line 810, in put
    key = yield self._put_batcher.add(entity, options)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/tasklets.py", line 371, in _help_tasklet_along
    value = gen.send(val)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/context.py", line 350, in _put_tasklet
    ent._key = key
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/model.py", line 1363, in __set__
    self._set_value(entity, value)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/model.py", line 1513, in _set_value
    value = _validate_key(value, entity=entity)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/model.py", line 1481, in _validate_key
    raise datastore_errors.BadValueError('Expected Key, got %r' % value)
BadValueError: Expected Key, got Key('User', 1)

any idea why? i run the test from console with this command nosetests tester_ndb.py --with-gae

Answer 1

I've gotten weird errors like this as well. I think there is a bug somewhere in Google's code. I got around it by tweaking my code to do the same thing in a slightly different way.

Try changing

self.owner.put()

to

ndb.put(self.owner)

Answer 2

Could you try running nose with the flag --without-sandbox ?

There seems to be an older issue on the former tracker about the same thing.

https://code.google.com/p/nose-gae/issues/detail?id=60

I recently took over maintaining NoseGAE so I will look into the root cause as well but I am assuming it is something internal to the App Engine SDK.

EDIT: --without-sandbox was removed in NoseGAE 0.4.0 when I migrated it to dev_appserver2