You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: tcgetattr.rs
    path of file: ./repos/remote-pty/remote-pty-master/src/handler
    
    the code of the file until where you have to start completion: use remote_pty_common::proto::{
    slave::{PtySlaveResponse, TcGetAttrResponse},
    Termios,
};

use crate::context::Context;

use super::common::handle_error;

// @see https://pubs.opengroup.org/onlinepubs/007
    
    fn test_tcgetattr_with_valid_pty() {
        let ctx = Context::openpty().unwrap();
        let ret = handle_tcgetattr(&ctx);

        let res = match ret {
            PtySlaveResponse::GetAttr(res) => res,
            res @ _ => {
                dbg!(res);
                unreachable!()
            }
        };

        assert_eq!(res.ret, 0);
    }