Method testMoveOnly

test/beast/websocket/write.cpp:616–624

    }

    void
    testMoveOnly()
    {
        net::io_context ioc;
        stream<test::stream> ws{ioc};
        ws.async_write_some(
            true, net::const_buffer{},
            move_only_handler{});
    }

    struct copyable_handler
    {