113 lines
2.5 KiB
Rust
113 lines
2.5 KiB
Rust
#![warn(rust_2018_idioms)]
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#![cfg(feature = "full")]
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use std::io::prelude::*;
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use tempfile::NamedTempFile;
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use tokio::fs::File;
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use tokio::io::{AsyncReadExt, AsyncSeekExt, AsyncWriteExt, SeekFrom};
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use tokio_test::task;
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const HELLO: &[u8] = b"hello world...";
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#[tokio::test]
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async fn basic_read() {
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let mut tempfile = tempfile();
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tempfile.write_all(HELLO).unwrap();
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let mut file = File::open(tempfile.path()).await.unwrap();
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let mut buf = [0; 1024];
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let n = file.read(&mut buf).await.unwrap();
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assert_eq!(n, HELLO.len());
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assert_eq!(&buf[..n], HELLO);
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}
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#[tokio::test]
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async fn basic_write() {
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let tempfile = tempfile();
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let mut file = File::create(tempfile.path()).await.unwrap();
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file.write_all(HELLO).await.unwrap();
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file.flush().await.unwrap();
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let file = std::fs::read(tempfile.path()).unwrap();
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assert_eq!(file, HELLO);
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}
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#[tokio::test]
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async fn basic_write_and_shutdown() {
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let tempfile = tempfile();
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let mut file = File::create(tempfile.path()).await.unwrap();
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file.write_all(HELLO).await.unwrap();
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file.shutdown().await.unwrap();
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let file = std::fs::read(tempfile.path()).unwrap();
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assert_eq!(file, HELLO);
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}
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#[tokio::test]
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async fn rewind_seek_position() {
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let tempfile = tempfile();
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let mut file = File::create(tempfile.path()).await.unwrap();
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file.seek(SeekFrom::Current(10)).await.unwrap();
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file.rewind().await.unwrap();
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assert_eq!(file.stream_position().await.unwrap(), 0);
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}
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#[tokio::test]
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async fn coop() {
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let mut tempfile = tempfile();
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tempfile.write_all(HELLO).unwrap();
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let mut task = task::spawn(async {
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let mut file = File::open(tempfile.path()).await.unwrap();
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let mut buf = [0; 1024];
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loop {
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file.read(&mut buf).await.unwrap();
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file.seek(std::io::SeekFrom::Start(0)).await.unwrap();
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}
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});
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for _ in 0..1_000 {
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if task.poll().is_pending() {
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return;
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}
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}
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panic!("did not yield");
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}
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fn tempfile() -> NamedTempFile {
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NamedTempFile::new().unwrap()
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}
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#[tokio::test]
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#[cfg(unix)]
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async fn unix_fd() {
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use std::os::unix::io::AsRawFd;
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let tempfile = tempfile();
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let file = File::create(tempfile.path()).await.unwrap();
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assert!(file.as_raw_fd() as u64 > 0);
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}
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#[tokio::test]
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#[cfg(windows)]
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async fn windows_handle() {
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use std::os::windows::io::AsRawHandle;
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let tempfile = tempfile();
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let file = File::create(tempfile.path()).await.unwrap();
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assert!(file.as_raw_handle() as u64 > 0);
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}
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