30 lines
1.3 KiB
Rust
30 lines
1.3 KiB
Rust
use assert_matches::assert_matches;
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use futures::executor::block_on;
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use futures::future::lazy;
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use futures::io::{AsyncWrite, Cursor};
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use futures::task::Poll;
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use std::pin::Pin;
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#[test]
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fn cursor_asyncwrite_vec() {
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let mut cursor = Cursor::new(vec![0; 5]);
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block_on(lazy(|cx| {
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assert_matches!(Pin::new(&mut cursor).poll_write(cx, &[1, 2]), Poll::Ready(Ok(2)));
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assert_matches!(Pin::new(&mut cursor).poll_write(cx, &[3, 4]), Poll::Ready(Ok(2)));
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assert_matches!(Pin::new(&mut cursor).poll_write(cx, &[5, 6]), Poll::Ready(Ok(2)));
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assert_matches!(Pin::new(&mut cursor).poll_write(cx, &[6, 7]), Poll::Ready(Ok(2)));
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}));
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assert_eq!(cursor.into_inner(), [1, 2, 3, 4, 5, 6, 6, 7]);
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}
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#[test]
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fn cursor_asyncwrite_box() {
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let mut cursor = Cursor::new(vec![0; 5].into_boxed_slice());
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block_on(lazy(|cx| {
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assert_matches!(Pin::new(&mut cursor).poll_write(cx, &[1, 2]), Poll::Ready(Ok(2)));
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assert_matches!(Pin::new(&mut cursor).poll_write(cx, &[3, 4]), Poll::Ready(Ok(2)));
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assert_matches!(Pin::new(&mut cursor).poll_write(cx, &[5, 6]), Poll::Ready(Ok(1)));
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assert_matches!(Pin::new(&mut cursor).poll_write(cx, &[6, 7]), Poll::Ready(Ok(0)));
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}));
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assert_eq!(&*cursor.into_inner(), [1, 2, 3, 4, 5]);
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}
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