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d25be66929
# Description
Currently `path exists` checks the file/folder's existence by traversing
symlinks. I've added a `-n` switch/flag that disables symlink
traversing, similar to what `path expand -n` does.
## The Long Story (for those interested)
Hello! 👋 While working on one of my scripts, I discovered that the `path
exists` command was traversing symlinks. This meant that even if the
file existed, it would fail if the pointed location didn't exist. To
address this, I've introduced a new `-n` flag, which I borrowed from the
`path expand` command. This addition should make the behavior more
consistent within the *path commands universe*.
## But, is it any useful?
```nushell
let compat = /run/media/userX/DriveX/steam/steamapps/compatdata
if "symlink" == ($compat | path expand -n | path type) {}
# to this
if ($compat | path exists -n) {}
```
# User-Facing Changes
Users, will not efect. Unless they use the mentioned `-n` flag/switch.
93 lines
2.4 KiB
Rust
93 lines
2.4 KiB
Rust
use nu_test_support::fs::Stub::EmptyFile;
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use nu_test_support::nu;
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use nu_test_support::playground::Playground;
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#[test]
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fn checks_if_existing_file_exists() {
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Playground::setup("path_exists_1", |dirs, sandbox| {
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sandbox.with_files(vec![EmptyFile("spam.txt")]);
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let actual = nu!(
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cwd: dirs.test(),
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"echo spam.txt | path exists"
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);
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assert_eq!(actual.out, "true");
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})
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}
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#[test]
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fn checks_if_missing_file_exists() {
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Playground::setup("path_exists_2", |dirs, _| {
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let actual = nu!(
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cwd: dirs.test(),
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"echo spam.txt | path exists"
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);
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assert_eq!(actual.out, "false");
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})
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}
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#[test]
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fn checks_if_dot_exists() {
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Playground::setup("path_exists_3", |dirs, _| {
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let actual = nu!(
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cwd: dirs.test(),
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"echo '.' | path exists"
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);
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assert_eq!(actual.out, "true");
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})
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}
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#[test]
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fn checks_if_double_dot_exists() {
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Playground::setup("path_exists_4", |dirs, _| {
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let actual = nu!(
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cwd: dirs.test(),
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"echo '..' | path exists"
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);
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assert_eq!(actual.out, "true");
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})
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}
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#[test]
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fn checks_tilde_relative_path_exists() {
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let actual = nu!("'~' | path exists");
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assert_eq!(actual.out, "true");
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}
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#[test]
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fn const_path_exists() {
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let actual = nu!("const exists = ('~' | path exists); $exists");
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assert_eq!(actual.out, "true");
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}
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#[test]
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fn test_check_symlink_exists() {
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use nu_test_support::{nu, playground::Playground};
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let symlink_target = "symlink_target";
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let symlink = "symlink";
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Playground::setup("path_exists_5", |dirs, sandbox| {
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#[cfg(not(windows))]
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std::os::unix::fs::symlink(dirs.test().join(symlink_target), dirs.test().join(symlink))
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.unwrap();
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#[cfg(windows)]
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std::os::windows::fs::symlink_file(
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dirs.test().join(symlink_target),
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dirs.test().join(symlink),
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)
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.unwrap();
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let false_out = "false".to_string();
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let shell_res = nu!(cwd: sandbox.cwd(), "'symlink_target' | path exists");
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assert_eq!(false_out, shell_res.out);
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let shell_res = nu!(cwd: sandbox.cwd(), "'symlink' | path exists");
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assert_eq!(false_out, shell_res.out);
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let shell_res = nu!(cwd: sandbox.cwd(), "'symlink' | path exists -n");
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assert_eq!("true".to_string(), shell_res.out);
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});
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}
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