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use {
crate::{
tests::util::{TestResult, WrapErrExt},
unnamed_pipe::tokio::pipe,
},
tokio::{
io::{AsyncBufReadExt, AsyncWriteExt, BufReader},
sync::mpsc,
task,
},
};
static MSG: &str = "Message from sender to receiver\n";
pub(super) async fn main() -> TestResult {
let (mut tx, rx) = pipe().opname("pipe creation")?;
let (notify, mut wait) = mpsc::channel(1);
let jh = task::spawn(async move {
tx.write_all(MSG.as_bytes()).await.opname("send")?;
drop(tx);
// Test buffer retention on drop
notify.send(()).await.opname("notify")?;
TestResult::Ok(())
});
wait.recv().await.unwrap();
// Sender is guaranteed to be in limbo by this point (Windows only)
let mut buf = String::with_capacity(MSG.len());
let mut rx = BufReader::new(rx);
rx.read_line(&mut buf).await.opname("receive")?;
ensure_eq!(buf, MSG);
jh.await??;
Ok(())
}
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