def test_with_empty_list(self):
from google.cloud.datastore_v1.types import entity as entity_pb2
from google.cloud.datastore.entity import Entity
entity = Entity()
entity["foo"] = []
entity_pb = self._call_fut(entity)
expected_pb = entity_pb2.Entity()
prop = expected_pb._pb.properties.get_or_create("foo")
prop.array_value.CopyFrom(entity_pb2.ArrayValue(values=[])._pb)
self._compare_entity_proto(entity_pb, expected_pb)
def test_index_mismatch_ignores_empty_list(self):
from google.cloud.datastore_v1.types import entity as entity_pb2
_PROJECT = "PROJECT"
_KIND = "KIND"
_ID = 1234
array_val_pb = entity_pb2.Value(array_value=entity_pb2.ArrayValue(
values=[]))
entity_pb = entity_pb2.Entity(properties={"baz": array_val_pb})
entity_pb.key.partition_id.project_id = _PROJECT
entity_pb.key._pb.path.add(kind=_KIND, id=_ID)
entity = self._call_fut(entity_pb._pb)
entity_dict = dict(entity)
self.assertEqual(entity_dict["baz"], [])
def _set_protobuf_value(value_pb, val):
"""Assign 'val' to the correct subfield of 'value_pb'.
The Protobuf API uses different attribute names based on value types
rather than inferring the type.
Some value types (entities, keys, lists) cannot be directly
assigned; this function handles them correctly.
:type value_pb: :class:`.entity_pb2.Value`
:param value_pb: The value protobuf to which the value is being assigned.
:type val: :class:`datetime.datetime`, boolean, float, integer, string,
:class:`google.cloud.datastore.key.Key`,
:class:`google.cloud.datastore.entity.Entity`
:param val: The value to be assigned.
"""
attr, val = _pb_attr_value(val)
if attr == "key_value":
value_pb.key_value.CopyFrom(val._pb)
elif attr == "timestamp_value":
value_pb.timestamp_value.CopyFrom(val)
elif attr == "entity_value":
entity_pb = entity_to_protobuf(val)
value_pb.entity_value.CopyFrom(entity_pb._pb)
elif attr == "array_value":
if len(val) == 0:
array_value = entity_pb2.ArrayValue(values=[])._pb
value_pb.array_value.CopyFrom(array_value)
else:
l_pb = value_pb.array_value.values
for item in val:
i_pb = l_pb.add()
_set_protobuf_value(i_pb, item)
elif attr == "geo_point_value":
value_pb.geo_point_value.CopyFrom(val)
else: # scalar, just assign
setattr(value_pb, attr, val)