Vendor things

third-party/vendor/nix/test/test_dir.rs

@@ -0,0 +1,65 @@
+use nix::dir::{Dir, Type};
+use nix::fcntl::OFlag;
+use nix::sys::stat::Mode;
+use std::fs::File;
+use tempfile::tempdir;
+
+#[cfg(test)]
+fn flags() -> OFlag {
+    #[cfg(target_os = "illumos")]
+    let f = OFlag::O_RDONLY | OFlag::O_CLOEXEC;
+
+    #[cfg(not(target_os = "illumos"))]
+    let f = OFlag::O_RDONLY | OFlag::O_CLOEXEC | OFlag::O_DIRECTORY;
+
+    f
+}
+
+#[test]
+#[allow(clippy::unnecessary_sort_by)] // False positive
+fn read() {
+    let tmp = tempdir().unwrap();
+    File::create(tmp.path().join("foo")).unwrap();
+    std::os::unix::fs::symlink("foo", tmp.path().join("bar")).unwrap();
+    let mut dir = Dir::open(tmp.path(), flags(), Mode::empty()).unwrap();
+    let mut entries: Vec<_> = dir.iter().map(|e| e.unwrap()).collect();
+    entries.sort_by(|a, b| a.file_name().cmp(b.file_name()));
+    let entry_names: Vec<_> = entries
+        .iter()
+        .map(|e| e.file_name().to_str().unwrap().to_owned())
+        .collect();
+    assert_eq!(&entry_names[..], &[".", "..", "bar", "foo"]);
+
+    // Check file types. The system is allowed to return DT_UNKNOWN (aka None here) but if it does
+    // return a type, ensure it's correct.
+    assert!(&[Some(Type::Directory), None].contains(&entries[0].file_type())); // .: dir
+    assert!(&[Some(Type::Directory), None].contains(&entries[1].file_type())); // ..: dir
+    assert!(&[Some(Type::Symlink), None].contains(&entries[2].file_type())); // bar: symlink
+    assert!(&[Some(Type::File), None].contains(&entries[3].file_type())); // foo: regular file
+}
+
+#[test]
+fn rewind() {
+    let tmp = tempdir().unwrap();
+    let mut dir = Dir::open(tmp.path(), flags(), Mode::empty()).unwrap();
+    let entries1: Vec<_> = dir
+        .iter()
+        .map(|e| e.unwrap().file_name().to_owned())
+        .collect();
+    let entries2: Vec<_> = dir
+        .iter()
+        .map(|e| e.unwrap().file_name().to_owned())
+        .collect();
+    let entries3: Vec<_> = dir
+        .into_iter()
+        .map(|e| e.unwrap().file_name().to_owned())
+        .collect();
+    assert_eq!(entries1, entries2);
+    assert_eq!(entries2, entries3);
+}
+
+#[cfg(not(target_os = "haiku"))]
+#[test]
+fn ebadf() {
+    assert_eq!(Dir::from_fd(-1).unwrap_err(), nix::Error::EBADF);
+}