osrm-backend/third_party/protozero/test/t/message/testcase.cpp

#include <testcase.hpp>

#include "testcase.pb.h"

int main() {
    TestMessage::Test msg;

    TestMessage::Sub* submsg = msg.mutable_submessage();
    submsg->set_s("foobar");

    write_to_file(msg, "data-message.pbf");

    TestMessage::Opt opt_msg;
    write_to_file(opt_msg, "data-opt-empty.pbf");

    opt_msg.set_s("optional");
    write_to_file(opt_msg, "data-opt-element.pbf");
}