diff options
Diffstat (limited to 'src/google/protobuf/lite_unittest.cc')
-rw-r--r-- | src/google/protobuf/lite_unittest.cc | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/google/protobuf/lite_unittest.cc b/src/google/protobuf/lite_unittest.cc index d1948ab5..3ca3fbaf 100644 --- a/src/google/protobuf/lite_unittest.cc +++ b/src/google/protobuf/lite_unittest.cc @@ -686,6 +686,33 @@ int main(int argc, char* argv[]) { EXPECT_TRUE(map_message.IsInitialized()); } + { + // Check that adding more values to enum does not corrupt message + // when passed through an old client. + protobuf_unittest::V2MessageLite v2_message; + v2_message.set_int_field(800); + // Set enum field to the value not understood by the old client. + v2_message.set_enum_field(protobuf_unittest::V2_SECOND); + string v2_bytes = v2_message.SerializeAsString(); + + protobuf_unittest::V1MessageLite v1_message; + v1_message.ParseFromString(v2_bytes); + EXPECT_TRUE(v1_message.IsInitialized()); + EXPECT_EQ(v1_message.int_field(), v2_message.int_field()); + // V1 client does not understand V2_SECOND value, so it discards it and + // uses default value instead. + EXPECT_EQ(v1_message.enum_field(), protobuf_unittest::V1_FIRST); + + // However, when re-serialized, it should preserve enum value. + string v1_bytes = v1_message.SerializeAsString(); + + protobuf_unittest::V2MessageLite same_v2_message; + same_v2_message.ParseFromString(v1_bytes); + + EXPECT_EQ(v2_message.int_field(), same_v2_message.int_field()); + EXPECT_EQ(v2_message.enum_field(), same_v2_message.enum_field()); + } + std::cout << "PASS" << std::endl; return 0; } |