tests/winch.rs


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use std::io::{Read as _, Write as _};

#[cfg(feature = "backend-std")]
#[test]
fn test_winch() {
    let pty = pty_process::std::Pty::new().unwrap();
    pty.resize(pty_process::Size::new(24, 80)).unwrap();
    let mut cmd = pty_process::std::Command::new("perl");
    cmd.args(&[
        "-E",
        "$|++; $SIG{WINCH} = sub { say 'WINCH' }; say 'started'; <>",
    ]);
    let mut child = cmd.spawn(pty).unwrap();

    let mut buf = [0u8; 1024];
    let bytes = child.pty().read(&mut buf).unwrap();
    assert_eq!(&buf[..bytes], b"started\r\n");

    child.resize_pty(pty_process::Size::new(25, 80)).unwrap();

    let bytes = child.pty().read(&mut buf).unwrap();
    assert_eq!(&buf[..bytes], b"WINCH\r\n");

    child.pty().write_all(b"\n").unwrap();
    let status = child.wait().unwrap();
    assert_eq!(status.code().unwrap(), 0);
}