class BaseStatistic(model.Model):
"""Base Statistic Model class.
Attributes:
bytes (int): the total number of bytes taken up in Cloud Datastore for
the statistic instance.
count (int): attribute is the total number of occurrences of the
statistic in Cloud Datastore.
timestamp (datetime.datetime): the time the statistic instance was
written to Cloud Datastore.
"""
# This is necessary for the _get_kind() classmethod override.
STORED_KIND_NAME = "__BaseStatistic__"
bytes = model.IntegerProperty()
count = model.IntegerProperty()
timestamp = model.DateTimeProperty()
@classmethod
def _get_kind(cls):
"""Kind name override."""
return cls.STORED_KIND_NAME
class SomeKind(model.Model):
prop1 = model.DateTimeProperty()
def test_constructor():
with pytest.raises(NotImplementedError):
model.DateTimeProperty()
