61 lines
1.8 KiB
Rust
61 lines
1.8 KiB
Rust
#![cfg(feature = "full")]
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use tokio::io::{AsyncBufReadExt, AsyncReadExt, AsyncSeekExt};
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#[tokio::test]
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async fn empty_read_is_cooperative() {
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tokio::select! {
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biased;
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_ = async {
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loop {
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let mut buf = [0u8; 4096];
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let _ = tokio::io::empty().read(&mut buf).await;
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}
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} => {},
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_ = tokio::task::yield_now() => {}
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}
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}
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#[tokio::test]
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async fn empty_buf_reads_are_cooperative() {
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tokio::select! {
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biased;
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_ = async {
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loop {
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let mut buf = String::new();
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let _ = tokio::io::empty().read_line(&mut buf).await;
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}
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} => {},
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_ = tokio::task::yield_now() => {}
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}
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}
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#[tokio::test]
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async fn empty_seek() {
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use std::io::SeekFrom;
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let mut empty = tokio::io::empty();
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assert!(matches!(empty.seek(SeekFrom::Start(0)).await, Ok(0)));
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assert!(matches!(empty.seek(SeekFrom::Start(1)).await, Ok(0)));
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assert!(matches!(empty.seek(SeekFrom::Start(u64::MAX)).await, Ok(0)));
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assert!(matches!(empty.seek(SeekFrom::End(i64::MIN)).await, Ok(0)));
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assert!(matches!(empty.seek(SeekFrom::End(-1)).await, Ok(0)));
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assert!(matches!(empty.seek(SeekFrom::End(0)).await, Ok(0)));
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assert!(matches!(empty.seek(SeekFrom::End(1)).await, Ok(0)));
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assert!(matches!(empty.seek(SeekFrom::End(i64::MAX)).await, Ok(0)));
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assert!(matches!(
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empty.seek(SeekFrom::Current(i64::MIN)).await,
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Ok(0)
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));
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assert!(matches!(empty.seek(SeekFrom::Current(-1)).await, Ok(0)));
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assert!(matches!(empty.seek(SeekFrom::Current(0)).await, Ok(0)));
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assert!(matches!(empty.seek(SeekFrom::Current(1)).await, Ok(0)));
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assert!(matches!(
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empty.seek(SeekFrom::Current(i64::MAX)).await,
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Ok(0)
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));
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}
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