tokio/tests/io_read_to_string.rs


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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_to_string() {
    let mut buf = String::new();
    let mut rd: &[u8] = b"hello world";

    let n = assert_ok!(rd.read_to_string(&mut buf).await);
    assert_eq!(n, 11);
    assert_eq!(buf[..], "hello world"[..]);
}