Function TEST

tests/test_asio_transport.cpp:41–68

using namespace oid;

TEST(AsioTransport, RoundTripBytes) {
    asio::io_context server_ctx;
    asio::ip::tcp::acceptor acceptor(
        server_ctx,
        asio::ip::tcp::endpoint(asio::ip::make_address("127.0.0.1"), 0));
    const unsigned short port = acceptor.local_endpoint().port();

    asio::ip::tcp::socket server_sock(server_ctx);
    std::thread server([&acceptor, &server_sock] {
        acceptor.accept(server_sock);
        // Echo 4 bytes back after receiving 4.
        std::array<std::byte, 4> buf{};
        asio::read(server_sock, asio::buffer(buf));
        asio::write(server_sock, asio::buffer(buf));
    });

    AsioTransport client("127.0.0.1", port);
    const std::array<std::byte, 4> out{
        std::byte{1}, std::byte{2}, std::byte{3}, std::byte{4}};
    client.send(out);
    std::array<std::byte, 4> in{};
    std::size_t got = 0;
    while (got < in.size()) {
        got += client.receive(std::span{in}.subspan(got));
    }
    server.join();
    EXPECT_EQ(in, out);
}

TEST(AsioTransport, HasDataFalseBeforeSend) {
    asio::io_context server_ctx;