зеркало из https://github.com/mozilla/gecko-dev.git
30 строки
833 B
Rust
30 строки
833 B
Rust
#![warn(rust_2018_idioms)]
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#![cfg(feature = "full")]
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use tokio::io::AsyncReadExt;
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use tokio::net::TcpStream;
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use tokio_test::assert_ok;
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use std::thread;
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use std::{convert::TryInto, io::Write, net};
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#[tokio::test]
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async fn peek() {
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let listener = net::TcpListener::bind("127.0.0.1:0").unwrap();
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let addr = listener.local_addr().unwrap();
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let t = thread::spawn(move || assert_ok!(listener.accept()).0);
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let left = net::TcpStream::connect(&addr).unwrap();
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let mut right = t.join().unwrap();
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let _ = right.write(&[1, 2, 3, 4]).unwrap();
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let mut left: TcpStream = left.try_into().unwrap();
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let mut buf = [0u8; 16];
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let n = assert_ok!(left.peek(&mut buf).await);
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assert_eq!([1, 2, 3, 4], buf[..n]);
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let n = assert_ok!(left.read(&mut buf).await);
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assert_eq!([1, 2, 3, 4], buf[..n]);
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}
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