def test_gcs_reads_and_updates_location(self, google_client):
bucket = MagicMock()
bucket.blob.return_value.download_as_bytes.return_value = b""
google_client.return_value.bucket = MagicMock(return_value=bucket)
result = GCSResult(bucket="foo", location="{thing}/here.txt")
new_result = result.read("path/to/my/stuff.txt")
assert new_result.location == "path/to/my/stuff.txt"
assert new_result.value is None
def test_gcs_read_fails_if_format_not_called_first(self, google_client):
result = GCSResult(bucket="foo", filepath_template="nothing/here.txt")
with pytest.raises(ValueError):
result.read()