io_read_exact.rs - mozsearch

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#![warn(rust_2018_idioms)]

#![cfg(feature = "full")]

use tokio::io::AsyncReadExt;

use tokio_test::assert_ok;

#[tokio::test]

async fn read_exact() {

    let mut buf = Box::new([0; 8]);

    let mut rd: &[u8] = b"hello world";

    let n = assert_ok!(rd.read_exact(&mut buf[..]).await);

    assert_eq!(n, 8);

    assert_eq!(buf[..], b"hello wo"[..]);