forked from mirrors/gecko-dev
79 lines
1.6 KiB
Rust
79 lines
1.6 KiB
Rust
#![warn(rust_2018_idioms)]
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#![cfg(all(feature = "full", not(tokio_wasi)))] // Wasi does not support panic recovery
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use tokio::io::{split, AsyncRead, AsyncWrite, ReadBuf, ReadHalf, WriteHalf};
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use std::io;
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use std::pin::Pin;
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use std::task::{Context, Poll};
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struct RW;
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impl AsyncRead for RW {
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fn poll_read(
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self: Pin<&mut Self>,
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_cx: &mut Context<'_>,
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buf: &mut ReadBuf<'_>,
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) -> Poll<io::Result<()>> {
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buf.put_slice(&[b'z']);
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Poll::Ready(Ok(()))
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}
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}
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impl AsyncWrite for RW {
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fn poll_write(
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self: Pin<&mut Self>,
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_cx: &mut Context<'_>,
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_buf: &[u8],
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) -> Poll<Result<usize, io::Error>> {
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Poll::Ready(Ok(1))
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}
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fn poll_flush(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<Result<(), io::Error>> {
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Poll::Ready(Ok(()))
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}
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fn poll_shutdown(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<Result<(), io::Error>> {
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Poll::Ready(Ok(()))
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}
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}
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#[test]
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fn is_send_and_sync() {
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fn assert_bound<T: Send + Sync>() {}
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assert_bound::<ReadHalf<RW>>();
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assert_bound::<WriteHalf<RW>>();
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}
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#[test]
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fn split_stream_id() {
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let (r1, w1) = split(RW);
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let (r2, w2) = split(RW);
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assert!(r1.is_pair_of(&w1));
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assert!(!r1.is_pair_of(&w2));
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assert!(r2.is_pair_of(&w2));
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assert!(!r2.is_pair_of(&w1));
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}
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#[test]
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fn unsplit_ok() {
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let (r, w) = split(RW);
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r.unsplit(w);
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}
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#[test]
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#[should_panic]
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fn unsplit_err1() {
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let (r, _) = split(RW);
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let (_, w) = split(RW);
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r.unsplit(w);
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}
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#[test]
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#[should_panic]
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fn unsplit_err2() {
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let (_, w) = split(RW);
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let (r, _) = split(RW);
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r.unsplit(w);
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}
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