def __init__(self, client, read_only=False):
super(Transaction, self).__init__(client)
self._id = None
if read_only:
options = TransactionOptions(read_only=TransactionOptions.ReadOnly())
else:
options = TransactionOptions()
self._options = options
def test_read_only_transaction_defaults(self):
from google.cloud.datastore_v1.types import TransactionOptions
creds = _make_credentials()
client = self._make_one(credentials=creds)
xact = client.transaction(read_only=True)
self.assertEqual(
xact._options,
TransactionOptions(read_only=TransactionOptions.ReadOnly()))
self.assertFalse(xact._options.HasField("read_write"))
self.assertTrue(xact._options.HasField("read_only"))
self.assertEqual(xact._options.read_only,
TransactionOptions.ReadOnly())
def test_begin_transaction_w_options(self):
from google.cloud.datastore_v1.types import TransactionOptions
read_only = TransactionOptions.ReadOnly._meta.pb()
options = TransactionOptions(read_only=read_only)
self._begin_transaction_helper(options=options)