117 lines
3.2 KiB
Rust
117 lines
3.2 KiB
Rust
#![warn(rust_2018_idioms)]
|
|
#![cfg(all(feature = "full", not(target_os = "wasi")))] // WASI does not support all fs operations
|
|
|
|
use tokio::fs;
|
|
|
|
use std::io::Write;
|
|
use tempfile::tempdir;
|
|
|
|
#[tokio::test]
|
|
#[cfg_attr(miri, ignore)] // No `linkat` in miri.
|
|
async fn test_hard_link() {
|
|
let dir = tempdir().unwrap();
|
|
let src = dir.path().join("src.txt");
|
|
let dst = dir.path().join("dst.txt");
|
|
|
|
std::fs::File::create(&src)
|
|
.unwrap()
|
|
.write_all(b"hello")
|
|
.unwrap();
|
|
|
|
fs::hard_link(&src, &dst).await.unwrap();
|
|
|
|
std::fs::File::create(&src)
|
|
.unwrap()
|
|
.write_all(b"new-data")
|
|
.unwrap();
|
|
|
|
let content = fs::read(&dst).await.unwrap();
|
|
assert_eq!(content, b"new-data");
|
|
|
|
// test that this is not a symlink:
|
|
assert!(fs::read_link(&dst).await.is_err());
|
|
}
|
|
|
|
#[cfg(unix)]
|
|
#[tokio::test]
|
|
async fn test_symlink() {
|
|
let dir = tempdir().unwrap();
|
|
let src = dir.path().join("src.txt");
|
|
let dst = dir.path().join("dst.txt");
|
|
|
|
std::fs::File::create(&src)
|
|
.unwrap()
|
|
.write_all(b"hello")
|
|
.unwrap();
|
|
|
|
fs::symlink(&src, &dst).await.unwrap();
|
|
|
|
std::fs::File::create(&src)
|
|
.unwrap()
|
|
.write_all(b"new-data")
|
|
.unwrap();
|
|
|
|
let content = fs::read(&dst).await.unwrap();
|
|
assert_eq!(content, b"new-data");
|
|
|
|
let read = fs::read_link(dst.clone()).await.unwrap();
|
|
assert!(read == src);
|
|
|
|
let symlink_meta = fs::symlink_metadata(dst.clone()).await.unwrap();
|
|
assert!(symlink_meta.file_type().is_symlink());
|
|
}
|
|
|
|
#[tokio::test]
|
|
#[cfg_attr(miri, ignore)] // No `linkat` in miri.
|
|
async fn test_hard_link_error_source_not_found() {
|
|
let dir = tempdir().unwrap();
|
|
let src = dir.path().join("nonexistent.txt");
|
|
let dst = dir.path().join("dst.txt");
|
|
|
|
let err = fs::hard_link(&src, &dst).await.unwrap_err();
|
|
assert_eq!(err.kind(), std::io::ErrorKind::NotFound);
|
|
}
|
|
|
|
#[tokio::test]
|
|
#[cfg_attr(miri, ignore)] // No `linkat` in miri.
|
|
async fn test_hard_link_error_destination_already_exists() {
|
|
let dir = tempdir().unwrap();
|
|
let src = dir.path().join("src.txt");
|
|
let dst = dir.path().join("dst.txt");
|
|
|
|
// Create source file
|
|
std::fs::write(&src, b"source content").unwrap();
|
|
|
|
// Create destination file
|
|
std::fs::write(&dst, b"destination content").unwrap();
|
|
|
|
// Attempt to create hard link when destination already exists
|
|
let err = fs::hard_link(&src, &dst).await.unwrap_err();
|
|
assert_eq!(err.kind(), std::io::ErrorKind::AlreadyExists);
|
|
}
|
|
|
|
#[tokio::test]
|
|
#[cfg_attr(miri, ignore)] // No `linkat` in miri.
|
|
async fn test_hard_link_error_source_is_directory() {
|
|
let dir = tempdir().unwrap();
|
|
let src_dir = dir.path().join("src_directory");
|
|
let dst = dir.path().join("dst.txt");
|
|
|
|
// Create source directory
|
|
fs::create_dir(&src_dir).await.unwrap();
|
|
|
|
// Attempt to create hard link from a directory
|
|
// On most systems, hard linking directories is not allowed
|
|
let err = fs::hard_link(&src_dir, &dst).await.unwrap_err();
|
|
|
|
// Different platforms return different error kinds
|
|
#[cfg(unix)]
|
|
assert!(
|
|
err.kind() == std::io::ErrorKind::PermissionDenied
|
|
|| err.kind() == std::io::ErrorKind::Other
|
|
);
|
|
|
|
#[cfg(windows)]
|
|
assert_eq!(err.kind(), std::io::ErrorKind::PermissionDenied);
|
|
}
|