app_engine_test_case.py

class SomeTestCase(unittest.TestCase):

    def setUp(self):
        self.testbed = testbed.Testbed()
        self.testbed.activate()
        self.testbed.init_datastore_v3_stub()
        self.testbed.init_memcache_stub()
        ndb.get_context().clear_cache()
        self.app = main.app.test_client()
        # Diff is 804 characters long. Set self.maxDiff to None to see it.
        self.maxDiff = None
        
    def tearDown(self):
        self.testbed.deactivate()