File: io_write_int.rs

package info (click to toggle)
thunderbird 1%3A115.16.0esr-1~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 3,476,252 kB
  • sloc: cpp: 6,972,150; javascript: 5,209,211; ansic: 3,507,222; python: 1,137,609; asm: 432,531; xml: 205,149; java: 175,761; sh: 116,485; makefile: 22,152; perl: 13,971; objc: 12,561; yacc: 4,583; pascal: 2,840; lex: 1,720; ruby: 1,075; exp: 762; sql: 666; awk: 580; php: 436; lisp: 430; sed: 70; csh: 10
file content (37 lines) | stat: -rw-r--r-- 942 bytes parent folder | download | duplicates (62) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
 
#![warn(rust_2018_idioms)]
#![cfg(feature = "full")]

use tokio::io::{AsyncWrite, AsyncWriteExt};

use std::io;
use std::pin::Pin;
use std::task::{Context, Poll};

#[tokio::test]
async fn write_int_should_err_if_write_count_0() {
    struct Wr {}

    impl AsyncWrite for Wr {
        fn poll_write(
            self: Pin<&mut Self>,
            _cx: &mut Context<'_>,
            _buf: &[u8],
        ) -> Poll<io::Result<usize>> {
            Ok(0).into()
        }

        fn poll_flush(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<io::Result<()>> {
            Ok(()).into()
        }

        fn poll_shutdown(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<io::Result<()>> {
            Ok(()).into()
        }
    }

    let mut wr = Wr {};

    // should be ok just to test these 2, other cases actually expanded by same macro.
    assert!(wr.write_i8(0).await.is_err());
    assert!(wr.write_i32(12).await.is_err());
}