async def test__begin_failure(self):
from google.cloud.firestore_v1.base_transaction import _CANT_BEGIN
client = _make_client()
transaction = self._make_one(client)
transaction._id = b"not-none"
with self.assertRaises(ValueError) as exc_info:
await transaction._begin()
err_msg = _CANT_BEGIN.format(transaction._id)
self.assertEqual(exc_info.exception.args, (err_msg,))
def test_transaction__begin_failure():
from google.cloud.firestore_v1.base_transaction import _CANT_BEGIN
client = _make_client()
transaction = _make_transaction(client)
transaction._id = b"not-none"
with pytest.raises(ValueError) as exc_info:
transaction._begin()
err_msg = _CANT_BEGIN.format(transaction._id)
assert exc_info.value.args == (err_msg, )
async def _begin(self, retry_id=None) -> None:
"""Begin the transaction.
Args:
retry_id (Optional[bytes]): Transaction ID of a transaction to be
retried.
Raises:
ValueError: If the current transaction has already begun.
"""
if self.in_progress:
msg = _CANT_BEGIN.format(self._id)
raise ValueError(msg)
transaction_response = await self._client._firestore_api.begin_transaction(
request={
"database": self._client._database_string,
"options": self._options_protobuf(retry_id),
},
metadata=self._client._rpc_metadata,
)
self._id = transaction_response.transaction
