forked from mirrors/gecko-dev
80 lines
2.4 KiB
Rust
80 lines
2.4 KiB
Rust
#![warn(rust_2018_idioms)]
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#![cfg(all(feature = "full", not(tokio_wasi)))] // WASI does not support all fs operations
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use std::io::Write;
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use tempfile::NamedTempFile;
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use tokio::fs::OpenOptions;
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use tokio::io::AsyncReadExt;
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const HELLO: &[u8] = b"hello world...";
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#[tokio::test]
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async fn open_with_open_options_and_read() {
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let mut tempfile = NamedTempFile::new().unwrap();
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tempfile.write_all(HELLO).unwrap();
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let mut file = OpenOptions::new().read(true).open(tempfile).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 open_options_write() {
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// TESTING HACK: use Debug output to check the stored data
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assert!(format!("{:?}", OpenOptions::new().write(true)).contains("write: true"));
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}
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#[tokio::test]
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async fn open_options_append() {
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// TESTING HACK: use Debug output to check the stored data
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assert!(format!("{:?}", OpenOptions::new().append(true)).contains("append: true"));
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}
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#[tokio::test]
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async fn open_options_truncate() {
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// TESTING HACK: use Debug output to check the stored data
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assert!(format!("{:?}", OpenOptions::new().truncate(true)).contains("truncate: true"));
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}
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#[tokio::test]
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async fn open_options_create() {
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// TESTING HACK: use Debug output to check the stored data
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assert!(format!("{:?}", OpenOptions::new().create(true)).contains("create: true"));
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}
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#[tokio::test]
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async fn open_options_create_new() {
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// TESTING HACK: use Debug output to check the stored data
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assert!(format!("{:?}", OpenOptions::new().create_new(true)).contains("create_new: true"));
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}
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#[tokio::test]
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#[cfg(unix)]
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async fn open_options_mode() {
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// TESTING HACK: use Debug output to check the stored data
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assert!(format!("{:?}", OpenOptions::new().mode(0o644)).contains("mode: 420 "));
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}
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#[tokio::test]
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#[cfg(target_os = "linux")]
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async fn open_options_custom_flags_linux() {
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// TESTING HACK: use Debug output to check the stored data
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assert!(
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format!("{:?}", OpenOptions::new().custom_flags(libc::O_TRUNC))
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.contains("custom_flags: 512,")
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);
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}
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#[tokio::test]
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#[cfg(any(target_os = "freebsd", target_os = "macos"))]
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async fn open_options_custom_flags_bsd_family() {
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// TESTING HACK: use Debug output to check the stored data
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assert!(
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format!("{:?}", OpenOptions::new().custom_flags(libc::O_NOFOLLOW))
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.contains("custom_flags: 256,")
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);
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}
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