def testOneofFields(self):
message = json_format_proto3_pb2.TestOneof()
# Always print does not affect oneof fields.
self.assertEqual(json_format.MessageToJson(message, True), '{}')
message.oneof_int32_value = 0
self.assertEqual(json_format.MessageToJson(message, True), '{\n'
' "oneofInt32Value": 0\n'
'}')
parsed_message = json_format_proto3_pb2.TestOneof()
self.CheckParseBack(message, parsed_message)
def testNullValue(self):
message = json_format_proto3_pb2.TestOneof()
message.oneof_null_value = 0
self.assertEqual(json_format.MessageToJson(message),
'{\n "oneofNullValue": null\n}')
parsed_message = json_format_proto3_pb2.TestOneof()
self.CheckParseBack(message, parsed_message)
# Check old format is also accepted
new_message = json_format_proto3_pb2.TestOneof()
json_format.Parse('{\n "oneofNullValue": "NULL_VALUE"\n}',
new_message)
self.assertEqual(json_format.MessageToJson(new_message),
'{\n "oneofNullValue": null\n}')
def testInvalidOneof(self):
message = json_format_proto3_pb2.TestOneof()
text = '{"oneofInt32Value": 1, "oneofStringValue": "2"}'
self.assertRaisesRegexp(
json_format.ParseError, 'Message type "proto3.TestOneof"'
' should not have multiple "oneof_value" oneof fields.',
json_format.Parse, text, message)