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use pty_process::Command as _;
#[cfg(feature = "backend-std")]
#[test]
fn test_cat_std() {
use std::io::{Read as _, Write as _};
let mut child = std::process::Command::new("cat")
.spawn_pty(Some(&pty_process::Size::new(24, 80)))
.unwrap();
child.pty().write_all(b"foo\n").unwrap();
// the pty will echo the written bytes back immediately, but the
// subprocess needs to generate its own output, which takes time, so we
// can't just read immediately (we may just get the echoed bytes). because
// the output generation is happening in the subprocess, we also don't
// have any way to know when (or if!) the subprocess will decide to send
// its output, so sleeping is the best we can do.
std::thread::sleep(std::time::Duration::from_secs(1));
let mut buf = [0u8; 1024];
let bytes = child.pty().read(&mut buf).unwrap();
assert_eq!(&buf[..bytes], b"foo\r\nfoo\r\n");
child.pty().write_all(&[4u8]).unwrap();
let status = child.wait().unwrap();
assert_eq!(status.code().unwrap(), 0);
}
#[cfg(feature = "backend-smol")]
#[test]
fn test_cat_smol() {
use smol::io::{AsyncReadExt as _, AsyncWriteExt as _};
let status = smol::block_on(async {
let mut child = smol::process::Command::new("cat")
.spawn_pty(Some(&pty_process::Size::new(24, 80)))
.unwrap();
child.pty().write_all(b"foo\n").await.unwrap();
// the pty will echo the written bytes back immediately, but the
// subprocess needs to generate its own output, which takes time, so
// we can't just read immediately (we may just get the echoed bytes).
// because the output generation is happening in the subprocess, we
// also don't have any way to know when (or if!) the subprocess will
// decide to send its output, so sleeping is the best we can do.
smol::Timer::after(std::time::Duration::from_secs(1)).await;
let mut buf = [0u8; 1024];
let bytes = child.pty().read(&mut buf).await.unwrap();
assert_eq!(&buf[..bytes], b"foo\r\nfoo\r\n");
child.pty().write_all(&[4u8]).await.unwrap();
child.status().await.unwrap()
});
assert_eq!(status.code().unwrap(), 0);
}
#[cfg(feature = "backend-async-std")]
#[test]
fn test_cat_async_std() {
use async_std::io::prelude::WriteExt as _;
use async_std::io::ReadExt as _;
let status = async_std::task::block_on(async {
let mut child = async_std::process::Command::new("cat")
.spawn_pty(Some(&pty_process::Size::new(24, 80)))
.unwrap();
child.pty().write_all(b"foo\n").await.unwrap();
// the pty will echo the written bytes back immediately, but the
// subprocess needs to generate its own output, which takes time, so
// we can't just read immediately (we may just get the echoed bytes).
// because the output generation is happening in the subprocess, we
// also don't have any way to know when (or if!) the subprocess will
// decide to send its output, so sleeping is the best we can do.
async_std::task::sleep(std::time::Duration::from_secs(1)).await;
let mut buf = [0u8; 1024];
let bytes = child.pty().read(&mut buf).await.unwrap();
assert_eq!(&buf[..bytes], b"foo\r\nfoo\r\n");
child.pty().write_all(&[4u8]).await.unwrap();
child.status().await.unwrap()
});
assert_eq!(status.code().unwrap(), 0);
}
#[cfg(feature = "backend-tokio")]
#[test]
fn test_cat_tokio() {
use tokio::io::{AsyncReadExt as _, AsyncWriteExt as _};
async fn async_test_cat_tokio() {
let mut child = tokio::process::Command::new("cat")
.spawn_pty(Some(&pty_process::Size::new(24, 80)))
.unwrap();
child.pty_mut().write_all(b"foo\n").await.unwrap();
// the pty will echo the written bytes back immediately, but the
// subprocess needs to generate its own output, which takes time, so
// we can't just read immediately (we may just get the echoed bytes).
// because the output generation is happening in the subprocess, we
// also don't have any way to know when (or if!) the subprocess will
// decide to send its output, so sleeping is the best we can do.
tokio::time::sleep(std::time::Duration::from_secs(1)).await;
let mut buf = [0u8; 1024];
let bytes = child.pty_mut().read(&mut buf).await.unwrap();
assert_eq!(&buf[..bytes], b"foo\r\nfoo\r\n");
child.pty_mut().write_all(&[4u8]).await.unwrap();
let status = child.wait().await.unwrap();
assert_eq!(status.code().unwrap(), 0);
}
tokio::runtime::Runtime::new().unwrap().block_on(async {
async_test_cat_tokio().await;
});
}
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