"", ""),               ::testing::KilledBySignal(SIGABRT),               "error: got empty string for making TextFormat data, input:");   EXPECT_EXIT(decode_data.AddString(0, "a", ""),               ::testing::KilledBySignal(SIGABRT),               "error: got empty string for making TextFormat data, input:");   EXPECT_EXIT(decode_data.AddString(0, "", "a"),               ::testing::KilledBySignal(SIGABRT),               "error: got empty string for making TextFormat data, input:");    // Null char in the string.    string str_with_null_char("ab\0c", 0);   EXPECT_EXIT(       