def testUnknownProperty(self):
class A(ndb.Model):
a = ndb.StringProperty()
inst = A(a='abc')
inst.put()
datastore_utils.DeletePropertyValue(inst, 'b')
inst.put()
inst = A.get_by_id(inst.key.id())
self.assertIsNotNone(inst.a)
def testRequiredField(self):
# Initial schema but this time with a required property
class A(ndb.Model):
a = ndb.StringProperty()
b = ndb.StringProperty(required=True)
# Create an entity using the initial schema
inst = A(a='abc', b='def')
inst.put()
# Delete the property and save the entity
utils.DeletePropertyValue(inst, 'b')
# Property required but no longer has a value.
with self.assertRaises(Exception):
inst.put()
def testDatetimeAutoNowAdd(self):
# Initial schema
class A(ndb.Model):
a = ndb.StringProperty()
b = ndb.DateTimeProperty(auto_now_add=True)
# Create an entity using the initial schema
inst = A(a='abc')
inst.put()
# Delete the property and save the entity
utils.DeletePropertyValue(inst, 'b')
inst.put()
self.assertTrue(utils.HasProperty(inst, 'b'))
self.assertIsNotNone(inst.b)
def testRepeatedProperty(self):
# Initial schema
class A(ndb.Model):
a = ndb.StringProperty()
b = ndb.StringProperty(repeated=True)
# Create an entity using the initial schema
inst = A(a='abc', b=['def'])
inst.put()
self.assertIsNotNone(inst.b)
# Delete the property and save the entity
utils.DeletePropertyValue(inst, 'b')
inst.put()
inst = A.get_by_id(inst.key.id())
# The old data is gone
self.assertEqual([], inst.b)
def testDeleteValue(self):
# Initial schema
class A(ndb.Model):
a = ndb.StringProperty()
b = ndb.StringProperty()
# Create an entity using the initial schema
inst = A(a='abc', b='def')
inst.put()
self.assertIsNotNone(inst.b)
# Delete the property and save the entity
datastore_utils.DeletePropertyValue(inst, 'b')
inst.put()
inst = A.get_by_id(inst.key.id())
# The old data is gone :)
self.assertIsNone(inst.b)