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#[test]
fn test_pipe_basic() {
use std::os::unix::io::FromRawFd as _;
let (read_fd, write_fd) =
nix::unistd::pipe2(nix::fcntl::OFlag::O_CLOEXEC).unwrap();
let mut child_from = std::process::Command::new("seq");
child_from.args(["1", "10"]);
child_from.stdout(unsafe { std::process::Stdio::from_raw_fd(write_fd) });
let mut child_to = std::process::Command::new("tac");
child_to.stdin(unsafe { std::process::Stdio::from_raw_fd(read_fd) });
child_to.stdout(std::process::Stdio::piped());
assert!(child_from.status().unwrap().success());
drop(child_from);
let output = child_to.output().unwrap();
assert!(output.status.success());
assert_eq!(output.stdout, b"10\n9\n8\n7\n6\n5\n4\n3\n2\n1\n");
}
#[test]
fn test_pipe_blocking() {
use std::io::Read as _;
use std::os::unix::io::FromRawFd as _;
let (read_fd, write_fd) =
nix::unistd::pipe2(nix::fcntl::OFlag::O_CLOEXEC).unwrap();
let pty_from = pty_process::blocking::Pty::new().unwrap();
let pts_from = pty_from.pts().unwrap();
pty_from.resize(pty_process::Size::new(24, 80)).unwrap();
let mut cmd_from = pty_process::blocking::Command::new("seq");
cmd_from.args(["1", "10"]);
cmd_from.stdout(unsafe { std::process::Stdio::from_raw_fd(write_fd) });
let mut child_from = cmd_from.spawn(&pts_from).unwrap();
let mut pty_to = pty_process::blocking::Pty::new().unwrap();
let pts_to = pty_to.pts().unwrap();
let mut cmd_to = pty_process::blocking::Command::new("tac");
cmd_to.stdin(unsafe { std::process::Stdio::from_raw_fd(read_fd) });
let mut child_to = cmd_to.spawn(&pts_to).unwrap();
assert!(child_from.wait().unwrap().success());
drop(cmd_from);
// wait for the `tac` process to finish generating output (we don't really
// have a good way to detect when that happens)
std::thread::sleep(std::time::Duration::from_millis(100));
let mut buf = [0u8; 1024];
let bytes = pty_to.read(&mut buf).unwrap();
assert_eq!(
&buf[..bytes],
b"10\r\n9\r\n8\r\n7\r\n6\r\n5\r\n4\r\n3\r\n2\r\n1\r\n"
);
assert!(child_to.wait().unwrap().success());
}
#[cfg(feature = "async")]
#[test]
fn test_pipe_async() {
use std::os::unix::io::FromRawFd as _;
use tokio::io::AsyncReadExt as _;
tokio::runtime::Builder::new_multi_thread()
.enable_all()
.build()
.unwrap()
.block_on(async {
let (read_fd, write_fd) =
nix::unistd::pipe2(nix::fcntl::OFlag::O_CLOEXEC).unwrap();
let pty_from = pty_process::Pty::new().unwrap();
let pts_from = pty_from.pts().unwrap();
pty_from.resize(pty_process::Size::new(24, 80)).unwrap();
let mut cmd_from = pty_process::Command::new("seq");
cmd_from.args(["1", "10"]);
cmd_from.stdout(unsafe {
std::process::Stdio::from_raw_fd(write_fd)
});
let mut child_from = cmd_from.spawn(&pts_from).unwrap();
let mut pty_to = pty_process::Pty::new().unwrap();
let pts_to = pty_to.pts().unwrap();
let mut cmd_to = pty_process::Command::new("tac");
cmd_to
.stdin(unsafe { std::process::Stdio::from_raw_fd(read_fd) });
let mut child_to = cmd_to.spawn(&pts_to).unwrap();
assert!(child_from.wait().await.unwrap().success());
drop(cmd_from);
// wait for the `tac` process to finish generating output (we
// don't really have a good way to detect when that happens)
tokio::time::sleep(std::time::Duration::from_millis(100)).await;
let mut buf = [0u8; 1024];
let bytes = pty_to.read(&mut buf).await.unwrap();
assert_eq!(
&buf[..bytes],
b"10\r\n9\r\n8\r\n7\r\n6\r\n5\r\n4\r\n3\r\n2\r\n1\r\n"
);
assert!(child_to.wait().await.unwrap().success());
});
}
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