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-rw-r--r--library/std/tests/path.rs1978
1 files changed, 1978 insertions, 0 deletions
diff --git a/library/std/tests/path.rs b/library/std/tests/path.rs
new file mode 100644
index 00000000000..978402b6fda
--- /dev/null
+++ b/library/std/tests/path.rs
@@ -0,0 +1,1978 @@
+#![feature(
+    clone_to_uninit,
+    path_add_extension,
+    path_file_prefix,
+    maybe_uninit_slice,
+    os_string_pathbuf_leak
+)]
+
+use std::clone::CloneToUninit;
+use std::ffi::OsStr;
+use std::hash::{DefaultHasher, Hash, Hasher};
+use std::mem::MaybeUninit;
+use std::path::*;
+use std::ptr;
+use std::rc::Rc;
+use std::sync::Arc;
+
+#[allow(unknown_lints, unused_macro_rules)]
+macro_rules! t (
+    ($path:expr, iter: $iter:expr) => (
+        {
+            let path = Path::new($path);
+
+            // Forward iteration
+            let comps = path.iter()
+                .map(|p| p.to_string_lossy().into_owned())
+                .collect::<Vec<String>>();
+            let exp: &[&str] = &$iter;
+            let exps = exp.iter().map(|s| s.to_string()).collect::<Vec<String>>();
+            assert!(comps == exps, "iter: Expected {:?}, found {:?}",
+                    exps, comps);
+
+            // Reverse iteration
+            let comps = Path::new($path).iter().rev()
+                .map(|p| p.to_string_lossy().into_owned())
+                .collect::<Vec<String>>();
+            let exps = exps.into_iter().rev().collect::<Vec<String>>();
+            assert!(comps == exps, "iter().rev(): Expected {:?}, found {:?}",
+                    exps, comps);
+        }
+    );
+
+    ($path:expr, has_root: $has_root:expr, is_absolute: $is_absolute:expr) => (
+        {
+            let path = Path::new($path);
+
+            let act_root = path.has_root();
+            assert!(act_root == $has_root, "has_root: Expected {:?}, found {:?}",
+                    $has_root, act_root);
+
+            let act_abs = path.is_absolute();
+            assert!(act_abs == $is_absolute, "is_absolute: Expected {:?}, found {:?}",
+                    $is_absolute, act_abs);
+        }
+    );
+
+    ($path:expr, parent: $parent:expr, file_name: $file:expr) => (
+        {
+            let path = Path::new($path);
+
+            let parent = path.parent().map(|p| p.to_str().unwrap());
+            let exp_parent: Option<&str> = $parent;
+            assert!(parent == exp_parent, "parent: Expected {:?}, found {:?}",
+                    exp_parent, parent);
+
+            let file = path.file_name().map(|p| p.to_str().unwrap());
+            let exp_file: Option<&str> = $file;
+            assert!(file == exp_file, "file_name: Expected {:?}, found {:?}",
+                    exp_file, file);
+        }
+    );
+
+    ($path:expr, file_stem: $file_stem:expr, extension: $extension:expr) => (
+        {
+            let path = Path::new($path);
+
+            let stem = path.file_stem().map(|p| p.to_str().unwrap());
+            let exp_stem: Option<&str> = $file_stem;
+            assert!(stem == exp_stem, "file_stem: Expected {:?}, found {:?}",
+                    exp_stem, stem);
+
+            let ext = path.extension().map(|p| p.to_str().unwrap());
+            let exp_ext: Option<&str> = $extension;
+            assert!(ext == exp_ext, "extension: Expected {:?}, found {:?}",
+                    exp_ext, ext);
+        }
+    );
+
+    ($path:expr, file_prefix: $file_prefix:expr, extension: $extension:expr) => (
+        {
+            let path = Path::new($path);
+
+            let prefix = path.file_prefix().map(|p| p.to_str().unwrap());
+            let exp_prefix: Option<&str> = $file_prefix;
+            assert!(prefix == exp_prefix, "file_prefix: Expected {:?}, found {:?}",
+                    exp_prefix, prefix);
+
+            let ext = path.extension().map(|p| p.to_str().unwrap());
+            let exp_ext: Option<&str> = $extension;
+            assert!(ext == exp_ext, "extension: Expected {:?}, found {:?}",
+                    exp_ext, ext);
+        }
+    );
+
+    ($path:expr, iter: $iter:expr,
+                 has_root: $has_root:expr, is_absolute: $is_absolute:expr,
+                 parent: $parent:expr, file_name: $file:expr,
+                 file_stem: $file_stem:expr, extension: $extension:expr,
+                 file_prefix: $file_prefix:expr) => (
+        {
+            t!($path, iter: $iter);
+            t!($path, has_root: $has_root, is_absolute: $is_absolute);
+            t!($path, parent: $parent, file_name: $file);
+            t!($path, file_stem: $file_stem, extension: $extension);
+            t!($path, file_prefix: $file_prefix, extension: $extension);
+        }
+    );
+);
+
+#[test]
+fn into() {
+    use std::borrow::Cow;
+
+    let static_path = Path::new("/home/foo");
+    let static_cow_path: Cow<'static, Path> = static_path.into();
+    let pathbuf = PathBuf::from("/home/foo");
+
+    {
+        let path: &Path = &pathbuf;
+        let borrowed_cow_path: Cow<'_, Path> = path.into();
+
+        assert_eq!(static_cow_path, borrowed_cow_path);
+    }
+
+    let owned_cow_path: Cow<'static, Path> = pathbuf.into();
+
+    assert_eq!(static_cow_path, owned_cow_path);
+}
+
+#[test]
+fn test_pathbuf_leak() {
+    let string = "/have/a/cake".to_owned();
+    let (len, cap) = (string.len(), string.capacity());
+    let buf = PathBuf::from(string);
+    let leaked = buf.leak();
+    assert_eq!(leaked.as_os_str().as_encoded_bytes(), b"/have/a/cake");
+    unsafe { drop(String::from_raw_parts(leaked.as_mut_os_str() as *mut OsStr as _, len, cap)) }
+}
+
+#[test]
+#[cfg(any(unix, target_os = "wasi"))]
+pub fn test_decompositions_unix() {
+    t!("",
+    iter: [],
+    has_root: false,
+    is_absolute: false,
+    parent: None,
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("foo",
+    iter: ["foo"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some(""),
+    file_name: Some("foo"),
+    file_stem: Some("foo"),
+    extension: None,
+    file_prefix: Some("foo")
+    );
+
+    t!("/",
+    iter: ["/"],
+    has_root: true,
+    is_absolute: true,
+    parent: None,
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("/foo",
+    iter: ["/", "foo"],
+    has_root: true,
+    is_absolute: true,
+    parent: Some("/"),
+    file_name: Some("foo"),
+    file_stem: Some("foo"),
+    extension: None,
+    file_prefix: Some("foo")
+    );
+
+    t!("foo/",
+    iter: ["foo"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some(""),
+    file_name: Some("foo"),
+    file_stem: Some("foo"),
+    extension: None,
+    file_prefix: Some("foo")
+    );
+
+    t!("/foo/",
+    iter: ["/", "foo"],
+    has_root: true,
+    is_absolute: true,
+    parent: Some("/"),
+    file_name: Some("foo"),
+    file_stem: Some("foo"),
+    extension: None,
+    file_prefix: Some("foo")
+    );
+
+    t!("foo/bar",
+    iter: ["foo", "bar"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("foo"),
+    file_name: Some("bar"),
+    file_stem: Some("bar"),
+    extension: None,
+    file_prefix: Some("bar")
+    );
+
+    t!("/foo/bar",
+    iter: ["/", "foo", "bar"],
+    has_root: true,
+    is_absolute: true,
+    parent: Some("/foo"),
+    file_name: Some("bar"),
+    file_stem: Some("bar"),
+    extension: None,
+    file_prefix: Some("bar")
+    );
+
+    t!("///foo///",
+    iter: ["/", "foo"],
+    has_root: true,
+    is_absolute: true,
+    parent: Some("/"),
+    file_name: Some("foo"),
+    file_stem: Some("foo"),
+    extension: None,
+    file_prefix: Some("foo")
+    );
+
+    t!("///foo///bar",
+    iter: ["/", "foo", "bar"],
+    has_root: true,
+    is_absolute: true,
+    parent: Some("///foo"),
+    file_name: Some("bar"),
+    file_stem: Some("bar"),
+    extension: None,
+    file_prefix: Some("bar")
+    );
+
+    t!("./.",
+    iter: ["."],
+    has_root: false,
+    is_absolute: false,
+    parent: Some(""),
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("/..",
+    iter: ["/", ".."],
+    has_root: true,
+    is_absolute: true,
+    parent: Some("/"),
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("../",
+    iter: [".."],
+    has_root: false,
+    is_absolute: false,
+    parent: Some(""),
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("foo/.",
+    iter: ["foo"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some(""),
+    file_name: Some("foo"),
+    file_stem: Some("foo"),
+    extension: None,
+    file_prefix: Some("foo")
+    );
+
+    t!("foo/..",
+    iter: ["foo", ".."],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("foo"),
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("foo/./",
+    iter: ["foo"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some(""),
+    file_name: Some("foo"),
+    file_stem: Some("foo"),
+    extension: None,
+    file_prefix: Some("foo")
+    );
+
+    t!("foo/./bar",
+    iter: ["foo", "bar"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("foo"),
+    file_name: Some("bar"),
+    file_stem: Some("bar"),
+    extension: None,
+    file_prefix: Some("bar")
+    );
+
+    t!("foo/../",
+    iter: ["foo", ".."],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("foo"),
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("foo/../bar",
+    iter: ["foo", "..", "bar"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("foo/.."),
+    file_name: Some("bar"),
+    file_stem: Some("bar"),
+    extension: None,
+    file_prefix: Some("bar")
+    );
+
+    t!("./a",
+    iter: [".", "a"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("."),
+    file_name: Some("a"),
+    file_stem: Some("a"),
+    extension: None,
+    file_prefix: Some("a")
+    );
+
+    t!(".",
+    iter: ["."],
+    has_root: false,
+    is_absolute: false,
+    parent: Some(""),
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("./",
+    iter: ["."],
+    has_root: false,
+    is_absolute: false,
+    parent: Some(""),
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("a/b",
+    iter: ["a", "b"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("a"),
+    file_name: Some("b"),
+    file_stem: Some("b"),
+    extension: None,
+    file_prefix: Some("b")
+    );
+
+    t!("a//b",
+    iter: ["a", "b"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("a"),
+    file_name: Some("b"),
+    file_stem: Some("b"),
+    extension: None,
+    file_prefix: Some("b")
+    );
+
+    t!("a/./b",
+    iter: ["a", "b"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("a"),
+    file_name: Some("b"),
+    file_stem: Some("b"),
+    extension: None,
+    file_prefix: Some("b")
+    );
+
+    t!("a/b/c",
+    iter: ["a", "b", "c"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("a/b"),
+    file_name: Some("c"),
+    file_stem: Some("c"),
+    extension: None,
+    file_prefix: Some("c")
+    );
+
+    t!(".foo",
+    iter: [".foo"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some(""),
+    file_name: Some(".foo"),
+    file_stem: Some(".foo"),
+    extension: None,
+    file_prefix: Some(".foo")
+    );
+
+    t!("a/.foo",
+    iter: ["a", ".foo"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("a"),
+    file_name: Some(".foo"),
+    file_stem: Some(".foo"),
+    extension: None,
+    file_prefix: Some(".foo")
+    );
+
+    t!("a/.rustfmt.toml",
+    iter: ["a", ".rustfmt.toml"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("a"),
+    file_name: Some(".rustfmt.toml"),
+    file_stem: Some(".rustfmt"),
+    extension: Some("toml"),
+    file_prefix: Some(".rustfmt")
+    );
+
+    t!("a/.x.y.z",
+    iter: ["a", ".x.y.z"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("a"),
+    file_name: Some(".x.y.z"),
+    file_stem: Some(".x.y"),
+    extension: Some("z"),
+    file_prefix: Some(".x")
+    );
+}
+
+#[test]
+#[cfg(windows)]
+pub fn test_decompositions_windows() {
+    t!("",
+    iter: [],
+    has_root: false,
+    is_absolute: false,
+    parent: None,
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("foo",
+    iter: ["foo"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some(""),
+    file_name: Some("foo"),
+    file_stem: Some("foo"),
+    extension: None,
+    file_prefix: Some("foo")
+    );
+
+    t!("/",
+    iter: ["\\"],
+    has_root: true,
+    is_absolute: false,
+    parent: None,
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("\\",
+    iter: ["\\"],
+    has_root: true,
+    is_absolute: false,
+    parent: None,
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("c:",
+    iter: ["c:"],
+    has_root: false,
+    is_absolute: false,
+    parent: None,
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("c:\\",
+    iter: ["c:", "\\"],
+    has_root: true,
+    is_absolute: true,
+    parent: None,
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("c:/",
+    iter: ["c:", "\\"],
+    has_root: true,
+    is_absolute: true,
+    parent: None,
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("/foo",
+    iter: ["\\", "foo"],
+    has_root: true,
+    is_absolute: false,
+    parent: Some("/"),
+    file_name: Some("foo"),
+    file_stem: Some("foo"),
+    extension: None,
+    file_prefix: Some("foo")
+    );
+
+    t!("foo/",
+    iter: ["foo"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some(""),
+    file_name: Some("foo"),
+    file_stem: Some("foo"),
+    extension: None,
+    file_prefix: Some("foo")
+    );
+
+    t!("/foo/",
+    iter: ["\\", "foo"],
+    has_root: true,
+    is_absolute: false,
+    parent: Some("/"),
+    file_name: Some("foo"),
+    file_stem: Some("foo"),
+    extension: None,
+    file_prefix: Some("foo")
+    );
+
+    t!("foo/bar",
+    iter: ["foo", "bar"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("foo"),
+    file_name: Some("bar"),
+    file_stem: Some("bar"),
+    extension: None,
+    file_prefix: Some("bar")
+    );
+
+    t!("/foo/bar",
+    iter: ["\\", "foo", "bar"],
+    has_root: true,
+    is_absolute: false,
+    parent: Some("/foo"),
+    file_name: Some("bar"),
+    file_stem: Some("bar"),
+    extension: None,
+    file_prefix: Some("bar")
+    );
+
+    t!("///foo///",
+    iter: ["\\", "foo"],
+    has_root: true,
+    is_absolute: false,
+    parent: Some("/"),
+    file_name: Some("foo"),
+    file_stem: Some("foo"),
+    extension: None,
+    file_prefix: Some("foo")
+    );
+
+    t!("///foo///bar",
+    iter: ["\\", "foo", "bar"],
+    has_root: true,
+    is_absolute: false,
+    parent: Some("///foo"),
+    file_name: Some("bar"),
+    file_stem: Some("bar"),
+    extension: None,
+    file_prefix: Some("bar")
+    );
+
+    t!("./.",
+    iter: ["."],
+    has_root: false,
+    is_absolute: false,
+    parent: Some(""),
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("/..",
+    iter: ["\\", ".."],
+    has_root: true,
+    is_absolute: false,
+    parent: Some("/"),
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("../",
+    iter: [".."],
+    has_root: false,
+    is_absolute: false,
+    parent: Some(""),
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("foo/.",
+    iter: ["foo"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some(""),
+    file_name: Some("foo"),
+    file_stem: Some("foo"),
+    extension: None,
+    file_prefix: Some("foo")
+    );
+
+    t!("foo/..",
+    iter: ["foo", ".."],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("foo"),
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("foo/./",
+    iter: ["foo"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some(""),
+    file_name: Some("foo"),
+    file_stem: Some("foo"),
+    extension: None,
+    file_prefix: Some("foo")
+    );
+
+    t!("foo/./bar",
+    iter: ["foo", "bar"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("foo"),
+    file_name: Some("bar"),
+    file_stem: Some("bar"),
+    extension: None,
+    file_prefix: Some("bar")
+    );
+
+    t!("foo/../",
+    iter: ["foo", ".."],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("foo"),
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("foo/../bar",
+    iter: ["foo", "..", "bar"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("foo/.."),
+    file_name: Some("bar"),
+    file_stem: Some("bar"),
+    extension: None,
+    file_prefix: Some("bar")
+    );
+
+    t!("./a",
+    iter: [".", "a"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("."),
+    file_name: Some("a"),
+    file_stem: Some("a"),
+    extension: None,
+    file_prefix: Some("a")
+    );
+
+    t!(".",
+    iter: ["."],
+    has_root: false,
+    is_absolute: false,
+    parent: Some(""),
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("./",
+    iter: ["."],
+    has_root: false,
+    is_absolute: false,
+    parent: Some(""),
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("a/b",
+    iter: ["a", "b"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("a"),
+    file_name: Some("b"),
+    file_stem: Some("b"),
+    extension: None,
+    file_prefix: Some("b")
+    );
+
+    t!("a//b",
+    iter: ["a", "b"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("a"),
+    file_name: Some("b"),
+    file_stem: Some("b"),
+    extension: None,
+    file_prefix: Some("b")
+    );
+
+    t!("a/./b",
+    iter: ["a", "b"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("a"),
+    file_name: Some("b"),
+    file_stem: Some("b"),
+    extension: None,
+    file_prefix: Some("b")
+    );
+
+    t!("a/b/c",
+       iter: ["a", "b", "c"],
+       has_root: false,
+       is_absolute: false,
+       parent: Some("a/b"),
+       file_name: Some("c"),
+       file_stem: Some("c"),
+       extension: None,
+       file_prefix: Some("c")
+    );
+
+    t!("a\\b\\c",
+    iter: ["a", "b", "c"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("a\\b"),
+    file_name: Some("c"),
+    file_stem: Some("c"),
+    extension: None,
+    file_prefix: Some("c")
+    );
+
+    t!("\\a",
+    iter: ["\\", "a"],
+    has_root: true,
+    is_absolute: false,
+    parent: Some("\\"),
+    file_name: Some("a"),
+    file_stem: Some("a"),
+    extension: None,
+    file_prefix: Some("a")
+    );
+
+    t!("c:\\foo.txt",
+    iter: ["c:", "\\", "foo.txt"],
+    has_root: true,
+    is_absolute: true,
+    parent: Some("c:\\"),
+    file_name: Some("foo.txt"),
+    file_stem: Some("foo"),
+    extension: Some("txt"),
+    file_prefix: Some("foo")
+    );
+
+    t!("\\\\server\\share\\foo.txt",
+    iter: ["\\\\server\\share", "\\", "foo.txt"],
+    has_root: true,
+    is_absolute: true,
+    parent: Some("\\\\server\\share\\"),
+    file_name: Some("foo.txt"),
+    file_stem: Some("foo"),
+    extension: Some("txt"),
+    file_prefix: Some("foo")
+    );
+
+    t!("\\\\server\\share",
+    iter: ["\\\\server\\share", "\\"],
+    has_root: true,
+    is_absolute: true,
+    parent: None,
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("\\\\server",
+    iter: ["\\", "server"],
+    has_root: true,
+    is_absolute: false,
+    parent: Some("\\"),
+    file_name: Some("server"),
+    file_stem: Some("server"),
+    extension: None,
+    file_prefix: Some("server")
+    );
+
+    t!("\\\\?\\bar\\foo.txt",
+    iter: ["\\\\?\\bar", "\\", "foo.txt"],
+    has_root: true,
+    is_absolute: true,
+    parent: Some("\\\\?\\bar\\"),
+    file_name: Some("foo.txt"),
+    file_stem: Some("foo"),
+    extension: Some("txt"),
+    file_prefix: Some("foo")
+    );
+
+    t!("\\\\?\\bar",
+    iter: ["\\\\?\\bar"],
+    has_root: true,
+    is_absolute: true,
+    parent: None,
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("\\\\?\\",
+    iter: ["\\\\?\\"],
+    has_root: true,
+    is_absolute: true,
+    parent: None,
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("\\\\?\\UNC\\server\\share\\foo.txt",
+    iter: ["\\\\?\\UNC\\server\\share", "\\", "foo.txt"],
+    has_root: true,
+    is_absolute: true,
+    parent: Some("\\\\?\\UNC\\server\\share\\"),
+    file_name: Some("foo.txt"),
+    file_stem: Some("foo"),
+    extension: Some("txt"),
+    file_prefix: Some("foo")
+    );
+
+    t!("\\\\?\\UNC\\server",
+    iter: ["\\\\?\\UNC\\server"],
+    has_root: true,
+    is_absolute: true,
+    parent: None,
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("\\\\?\\UNC\\",
+    iter: ["\\\\?\\UNC\\"],
+    has_root: true,
+    is_absolute: true,
+    parent: None,
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("\\\\?\\C:\\foo.txt",
+    iter: ["\\\\?\\C:", "\\", "foo.txt"],
+    has_root: true,
+    is_absolute: true,
+    parent: Some("\\\\?\\C:\\"),
+    file_name: Some("foo.txt"),
+    file_stem: Some("foo"),
+    extension: Some("txt"),
+    file_prefix: Some("foo")
+    );
+
+    t!("\\\\?\\C:\\",
+    iter: ["\\\\?\\C:", "\\"],
+    has_root: true,
+    is_absolute: true,
+    parent: None,
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("\\\\?\\C:",
+    iter: ["\\\\?\\C:"],
+    has_root: true,
+    is_absolute: true,
+    parent: None,
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("\\\\?\\foo/bar",
+    iter: ["\\\\?\\foo/bar"],
+    has_root: true,
+    is_absolute: true,
+    parent: None,
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("\\\\?\\C:/foo/bar",
+    iter: ["\\\\?\\C:", "\\", "foo/bar"],
+    has_root: true,
+    is_absolute: true,
+    parent: Some("\\\\?\\C:/"),
+    file_name: Some("foo/bar"),
+    file_stem: Some("foo/bar"),
+    extension: None,
+    file_prefix: Some("foo/bar")
+    );
+
+    t!("\\\\.\\foo\\bar",
+    iter: ["\\\\.\\foo", "\\", "bar"],
+    has_root: true,
+    is_absolute: true,
+    parent: Some("\\\\.\\foo\\"),
+    file_name: Some("bar"),
+    file_stem: Some("bar"),
+    extension: None,
+    file_prefix: Some("bar")
+    );
+
+    t!("\\\\.\\foo",
+    iter: ["\\\\.\\foo", "\\"],
+    has_root: true,
+    is_absolute: true,
+    parent: None,
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("\\\\.\\foo/bar",
+    iter: ["\\\\.\\foo", "\\", "bar"],
+    has_root: true,
+    is_absolute: true,
+    parent: Some("\\\\.\\foo/"),
+    file_name: Some("bar"),
+    file_stem: Some("bar"),
+    extension: None,
+    file_prefix: Some("bar")
+    );
+
+    t!("\\\\.\\foo\\bar/baz",
+    iter: ["\\\\.\\foo", "\\", "bar", "baz"],
+    has_root: true,
+    is_absolute: true,
+    parent: Some("\\\\.\\foo\\bar"),
+    file_name: Some("baz"),
+    file_stem: Some("baz"),
+    extension: None,
+    file_prefix: Some("baz")
+    );
+
+    t!("\\\\.\\",
+    iter: ["\\\\.\\", "\\"],
+    has_root: true,
+    is_absolute: true,
+    parent: None,
+    file_name: None,
+    file_stem: None,
+    extension: None,
+    file_prefix: None
+    );
+
+    t!("\\\\?\\a\\b\\",
+    iter: ["\\\\?\\a", "\\", "b"],
+    has_root: true,
+    is_absolute: true,
+    parent: Some("\\\\?\\a\\"),
+    file_name: Some("b"),
+    file_stem: Some("b"),
+    extension: None,
+    file_prefix: Some("b")
+    );
+
+    t!("\\\\?\\C:\\foo.txt.zip",
+    iter: ["\\\\?\\C:", "\\", "foo.txt.zip"],
+    has_root: true,
+    is_absolute: true,
+    parent: Some("\\\\?\\C:\\"),
+    file_name: Some("foo.txt.zip"),
+    file_stem: Some("foo.txt"),
+    extension: Some("zip"),
+    file_prefix: Some("foo")
+    );
+
+    t!("\\\\?\\C:\\.foo.txt.zip",
+    iter: ["\\\\?\\C:", "\\", ".foo.txt.zip"],
+    has_root: true,
+    is_absolute: true,
+    parent: Some("\\\\?\\C:\\"),
+    file_name: Some(".foo.txt.zip"),
+    file_stem: Some(".foo.txt"),
+    extension: Some("zip"),
+    file_prefix: Some(".foo")
+    );
+
+    t!("\\\\?\\C:\\.foo",
+    iter: ["\\\\?\\C:", "\\", ".foo"],
+    has_root: true,
+    is_absolute: true,
+    parent: Some("\\\\?\\C:\\"),
+    file_name: Some(".foo"),
+    file_stem: Some(".foo"),
+    extension: None,
+    file_prefix: Some(".foo")
+    );
+
+    t!("a/.x.y.z",
+    iter: ["a", ".x.y.z"],
+    has_root: false,
+    is_absolute: false,
+    parent: Some("a"),
+    file_name: Some(".x.y.z"),
+    file_stem: Some(".x.y"),
+    extension: Some("z"),
+    file_prefix: Some(".x")
+    );
+}
+
+#[test]
+pub fn test_stem_ext() {
+    t!("foo",
+    file_stem: Some("foo"),
+    extension: None
+    );
+
+    t!("foo.",
+    file_stem: Some("foo"),
+    extension: Some("")
+    );
+
+    t!(".foo",
+    file_stem: Some(".foo"),
+    extension: None
+    );
+
+    t!("foo.txt",
+    file_stem: Some("foo"),
+    extension: Some("txt")
+    );
+
+    t!("foo.bar.txt",
+    file_stem: Some("foo.bar"),
+    extension: Some("txt")
+    );
+
+    t!("foo.bar.",
+    file_stem: Some("foo.bar"),
+    extension: Some("")
+    );
+
+    t!(".", file_stem: None, extension: None);
+
+    t!("..", file_stem: None, extension: None);
+
+    t!(".x.y.z", file_stem: Some(".x.y"), extension: Some("z"));
+
+    t!("..x.y.z", file_stem: Some("..x.y"), extension: Some("z"));
+
+    t!("", file_stem: None, extension: None);
+}
+
+#[test]
+pub fn test_prefix_ext() {
+    t!("foo",
+    file_prefix: Some("foo"),
+    extension: None
+    );
+
+    t!("foo.",
+    file_prefix: Some("foo"),
+    extension: Some("")
+    );
+
+    t!(".foo",
+    file_prefix: Some(".foo"),
+    extension: None
+    );
+
+    t!("foo.txt",
+    file_prefix: Some("foo"),
+    extension: Some("txt")
+    );
+
+    t!("foo.bar.txt",
+    file_prefix: Some("foo"),
+    extension: Some("txt")
+    );
+
+    t!("foo.bar.",
+    file_prefix: Some("foo"),
+    extension: Some("")
+    );
+
+    t!(".", file_prefix: None, extension: None);
+
+    t!("..", file_prefix: None, extension: None);
+
+    t!(".x.y.z", file_prefix: Some(".x"), extension: Some("z"));
+
+    t!("..x.y.z", file_prefix: Some("."), extension: Some("z"));
+
+    t!("", file_prefix: None, extension: None);
+}
+
+#[test]
+pub fn test_push() {
+    macro_rules! tp (
+        ($path:expr, $push:expr, $expected:expr) => ({
+            let mut actual = PathBuf::from($path);
+            actual.push($push);
+            assert!(actual.to_str() == Some($expected),
+                    "pushing {:?} onto {:?}: Expected {:?}, got {:?}",
+                    $push, $path, $expected, actual.to_str().unwrap());
+        });
+    );
+
+    if cfg!(unix)
+        || cfg!(target_os = "wasi")
+        || cfg!(all(target_env = "sgx", target_vendor = "fortanix"))
+    {
+        tp!("", "foo", "foo");
+        tp!("foo", "bar", "foo/bar");
+        tp!("foo/", "bar", "foo/bar");
+        tp!("foo//", "bar", "foo//bar");
+        tp!("foo/.", "bar", "foo/./bar");
+        tp!("foo./.", "bar", "foo././bar");
+        tp!("foo", "", "foo/");
+        tp!("foo", ".", "foo/.");
+        tp!("foo", "..", "foo/..");
+        tp!("foo", "/", "/");
+        tp!("/foo/bar", "/", "/");
+        tp!("/foo/bar", "/baz", "/baz");
+        tp!("/foo/bar", "./baz", "/foo/bar/./baz");
+    } else {
+        tp!("", "foo", "foo");
+        tp!("foo", "bar", r"foo\bar");
+        tp!("foo/", "bar", r"foo/bar");
+        tp!(r"foo\", "bar", r"foo\bar");
+        tp!("foo//", "bar", r"foo//bar");
+        tp!(r"foo\\", "bar", r"foo\\bar");
+        tp!("foo/.", "bar", r"foo/.\bar");
+        tp!("foo./.", "bar", r"foo./.\bar");
+        tp!(r"foo\.", "bar", r"foo\.\bar");
+        tp!(r"foo.\.", "bar", r"foo.\.\bar");
+        tp!("foo", "", "foo\\");
+        tp!("foo", ".", r"foo\.");
+        tp!("foo", "..", r"foo\..");
+        tp!("foo", "/", "/");
+        tp!("foo", r"\", r"\");
+        tp!("/foo/bar", "/", "/");
+        tp!(r"\foo\bar", r"\", r"\");
+        tp!("/foo/bar", "/baz", "/baz");
+        tp!("/foo/bar", r"\baz", r"\baz");
+        tp!("/foo/bar", "./baz", r"/foo/bar\./baz");
+        tp!("/foo/bar", r".\baz", r"/foo/bar\.\baz");
+
+        tp!("c:\\", "windows", "c:\\windows");
+        tp!("c:", "windows", "c:windows");
+
+        tp!("a\\b\\c", "d", "a\\b\\c\\d");
+        tp!("\\a\\b\\c", "d", "\\a\\b\\c\\d");
+        tp!("a\\b", "c\\d", "a\\b\\c\\d");
+        tp!("a\\b", "\\c\\d", "\\c\\d");
+        tp!("a\\b", ".", "a\\b\\.");
+        tp!("a\\b", "..\\c", "a\\b\\..\\c");
+        tp!("a\\b", "C:a.txt", "C:a.txt");
+        tp!("a\\b", "C:\\a.txt", "C:\\a.txt");
+        tp!("C:\\a", "C:\\b.txt", "C:\\b.txt");
+        tp!("C:\\a\\b\\c", "C:d", "C:d");
+        tp!("C:a\\b\\c", "C:d", "C:d");
+        tp!("C:", r"a\b\c", r"C:a\b\c");
+        tp!("C:", r"..\a", r"C:..\a");
+        tp!("\\\\server\\share\\foo", "bar", "\\\\server\\share\\foo\\bar");
+        tp!("\\\\server\\share\\foo", "C:baz", "C:baz");
+        tp!("\\\\?\\C:\\a\\b", "C:c\\d", "C:c\\d");
+        tp!("\\\\?\\C:a\\b", "C:c\\d", "C:c\\d");
+        tp!("\\\\?\\C:\\a\\b", "C:\\c\\d", "C:\\c\\d");
+        tp!("\\\\?\\foo\\bar", "baz", "\\\\?\\foo\\bar\\baz");
+        tp!("\\\\?\\UNC\\server\\share\\foo", "bar", "\\\\?\\UNC\\server\\share\\foo\\bar");
+        tp!("\\\\?\\UNC\\server\\share", "C:\\a", "C:\\a");
+        tp!("\\\\?\\UNC\\server\\share", "C:a", "C:a");
+
+        // Note: modified from old path API
+        tp!("\\\\?\\UNC\\server", "foo", "\\\\?\\UNC\\server\\foo");
+
+        tp!("C:\\a", "\\\\?\\UNC\\server\\share", "\\\\?\\UNC\\server\\share");
+        tp!("\\\\.\\foo\\bar", "baz", "\\\\.\\foo\\bar\\baz");
+        tp!("\\\\.\\foo\\bar", "C:a", "C:a");
+        // again, not sure about the following, but I'm assuming \\.\ should be verbatim
+        tp!("\\\\.\\foo", "..\\bar", "\\\\.\\foo\\..\\bar");
+
+        tp!("\\\\?\\C:", "foo", "\\\\?\\C:\\foo"); // this is a weird one
+
+        tp!(r"\\?\C:\bar", "../foo", r"\\?\C:\foo");
+        tp!(r"\\?\C:\bar", "../../foo", r"\\?\C:\foo");
+        tp!(r"\\?\C:\", "../foo", r"\\?\C:\foo");
+        tp!(r"\\?\C:", r"D:\foo/./", r"D:\foo/./");
+        tp!(r"\\?\C:", r"\\?\D:\foo\.\", r"\\?\D:\foo\.\");
+        tp!(r"\\?\A:\x\y", "/foo", r"\\?\A:\foo");
+        tp!(r"\\?\A:", r"..\foo\.", r"\\?\A:\foo");
+        tp!(r"\\?\A:\x\y", r".\foo\.", r"\\?\A:\x\y\foo");
+        tp!(r"\\?\A:\x\y", r"", r"\\?\A:\x\y\");
+    }
+}
+
+#[test]
+pub fn test_pop() {
+    macro_rules! tp (
+        ($path:expr, $expected:expr, $output:expr) => ({
+            let mut actual = PathBuf::from($path);
+            let output = actual.pop();
+            assert!(actual.to_str() == Some($expected) && output == $output,
+                    "popping from {:?}: Expected {:?}/{:?}, got {:?}/{:?}",
+                    $path, $expected, $output,
+                    actual.to_str().unwrap(), output);
+        });
+    );
+
+    tp!("", "", false);
+    tp!("/", "/", false);
+    tp!("foo", "", true);
+    tp!(".", "", true);
+    tp!("/foo", "/", true);
+    tp!("/foo/bar", "/foo", true);
+    tp!("foo/bar", "foo", true);
+    tp!("foo/.", "", true);
+    tp!("foo//bar", "foo", true);
+
+    if cfg!(windows) {
+        tp!("a\\b\\c", "a\\b", true);
+        tp!("\\a", "\\", true);
+        tp!("\\", "\\", false);
+
+        tp!("C:\\a\\b", "C:\\a", true);
+        tp!("C:\\a", "C:\\", true);
+        tp!("C:\\", "C:\\", false);
+        tp!("C:a\\b", "C:a", true);
+        tp!("C:a", "C:", true);
+        tp!("C:", "C:", false);
+        tp!("\\\\server\\share\\a\\b", "\\\\server\\share\\a", true);
+        tp!("\\\\server\\share\\a", "\\\\server\\share\\", true);
+        tp!("\\\\server\\share", "\\\\server\\share", false);
+        tp!("\\\\?\\a\\b\\c", "\\\\?\\a\\b", true);
+        tp!("\\\\?\\a\\b", "\\\\?\\a\\", true);
+        tp!("\\\\?\\a", "\\\\?\\a", false);
+        tp!("\\\\?\\C:\\a\\b", "\\\\?\\C:\\a", true);
+        tp!("\\\\?\\C:\\a", "\\\\?\\C:\\", true);
+        tp!("\\\\?\\C:\\", "\\\\?\\C:\\", false);
+        tp!("\\\\?\\UNC\\server\\share\\a\\b", "\\\\?\\UNC\\server\\share\\a", true);
+        tp!("\\\\?\\UNC\\server\\share\\a", "\\\\?\\UNC\\server\\share\\", true);
+        tp!("\\\\?\\UNC\\server\\share", "\\\\?\\UNC\\server\\share", false);
+        tp!("\\\\.\\a\\b\\c", "\\\\.\\a\\b", true);
+        tp!("\\\\.\\a\\b", "\\\\.\\a\\", true);
+        tp!("\\\\.\\a", "\\\\.\\a", false);
+
+        tp!("\\\\?\\a\\b\\", "\\\\?\\a\\", true);
+    }
+}
+
+#[test]
+pub fn test_set_file_name() {
+    macro_rules! tfn (
+        ($path:expr, $file:expr, $expected:expr) => ({
+            let mut p = PathBuf::from($path);
+            p.set_file_name($file);
+            assert!(p.to_str() == Some($expected),
+                    "setting file name of {:?} to {:?}: Expected {:?}, got {:?}",
+                    $path, $file, $expected,
+                    p.to_str().unwrap());
+        });
+    );
+
+    tfn!("foo", "foo", "foo");
+    tfn!("foo", "bar", "bar");
+    tfn!("foo", "", "");
+    tfn!("", "foo", "foo");
+    if cfg!(unix)
+        || cfg!(target_os = "wasi")
+        || cfg!(all(target_env = "sgx", target_vendor = "fortanix"))
+    {
+        tfn!(".", "foo", "./foo");
+        tfn!("foo/", "bar", "bar");
+        tfn!("foo/.", "bar", "bar");
+        tfn!("..", "foo", "../foo");
+        tfn!("foo/..", "bar", "foo/../bar");
+        tfn!("/", "foo", "/foo");
+    } else {
+        tfn!(".", "foo", r".\foo");
+        tfn!(r"foo\", "bar", r"bar");
+        tfn!(r"foo\.", "bar", r"bar");
+        tfn!("..", "foo", r"..\foo");
+        tfn!(r"foo\..", "bar", r"foo\..\bar");
+        tfn!(r"\", "foo", r"\foo");
+    }
+}
+
+#[test]
+pub fn test_set_extension() {
+    macro_rules! tfe (
+        ($path:expr, $ext:expr, $expected:expr, $output:expr) => ({
+            let mut p = PathBuf::from($path);
+            let output = p.set_extension($ext);
+            assert!(p.to_str() == Some($expected) && output == $output,
+                    "setting extension of {:?} to {:?}: Expected {:?}/{:?}, got {:?}/{:?}",
+                    $path, $ext, $expected, $output,
+                    p.to_str().unwrap(), output);
+        });
+    );
+
+    tfe!("foo", "txt", "foo.txt", true);
+    tfe!("foo.bar", "txt", "foo.txt", true);
+    tfe!("foo.bar.baz", "txt", "foo.bar.txt", true);
+    tfe!(".test", "txt", ".test.txt", true);
+    tfe!("foo.txt", "", "foo", true);
+    tfe!("foo", "", "foo", true);
+    tfe!("", "foo", "", false);
+    tfe!(".", "foo", ".", false);
+    tfe!("foo/", "bar", "foo.bar", true);
+    tfe!("foo/.", "bar", "foo.bar", true);
+    tfe!("..", "foo", "..", false);
+    tfe!("foo/..", "bar", "foo/..", false);
+    tfe!("/", "foo", "/", false);
+}
+
+#[test]
+pub fn test_add_extension() {
+    macro_rules! tfe (
+        ($path:expr, $ext:expr, $expected:expr, $output:expr) => ({
+            let mut p = PathBuf::from($path);
+            let output = p.add_extension($ext);
+            assert!(p.to_str() == Some($expected) && output == $output,
+                    "adding extension of {:?} to {:?}: Expected {:?}/{:?}, got {:?}/{:?}",
+                    $path, $ext, $expected, $output,
+                    p.to_str().unwrap(), output);
+        });
+    );
+
+    tfe!("foo", "txt", "foo.txt", true);
+    tfe!("foo.bar", "txt", "foo.bar.txt", true);
+    tfe!("foo.bar.baz", "txt", "foo.bar.baz.txt", true);
+    tfe!(".test", "txt", ".test.txt", true);
+    tfe!("foo.txt", "", "foo.txt", true);
+    tfe!("foo", "", "foo", true);
+    tfe!("", "foo", "", false);
+    tfe!(".", "foo", ".", false);
+    tfe!("foo/", "bar", "foo.bar", true);
+    tfe!("foo/.", "bar", "foo.bar", true);
+    tfe!("..", "foo", "..", false);
+    tfe!("foo/..", "bar", "foo/..", false);
+    tfe!("/", "foo", "/", false);
+
+    // edge cases
+    tfe!("/foo.ext////", "bar", "/foo.ext.bar", true);
+}
+
+#[test]
+pub fn test_with_extension() {
+    macro_rules! twe (
+        ($input:expr, $extension:expr, $expected:expr) => ({
+            let input = Path::new($input);
+            let output = input.with_extension($extension);
+
+            assert!(
+                output.to_str() == Some($expected),
+                "calling Path::new({:?}).with_extension({:?}): Expected {:?}, got {:?}",
+                $input, $extension, $expected, output,
+            );
+        });
+    );
+
+    twe!("foo", "txt", "foo.txt");
+    twe!("foo.bar", "txt", "foo.txt");
+    twe!("foo.bar.baz", "txt", "foo.bar.txt");
+    twe!(".test", "txt", ".test.txt");
+    twe!("foo.txt", "", "foo");
+    twe!("foo", "", "foo");
+    twe!("", "foo", "");
+    twe!(".", "foo", ".");
+    twe!("foo/", "bar", "foo.bar");
+    twe!("foo/.", "bar", "foo.bar");
+    twe!("..", "foo", "..");
+    twe!("foo/..", "bar", "foo/..");
+    twe!("/", "foo", "/");
+
+    // New extension is smaller than file name
+    twe!("aaa_aaa_aaa", "bbb_bbb", "aaa_aaa_aaa.bbb_bbb");
+    // New extension is greater than file name
+    twe!("bbb_bbb", "aaa_aaa_aaa", "bbb_bbb.aaa_aaa_aaa");
+
+    // New extension is smaller than previous extension
+    twe!("ccc.aaa_aaa_aaa", "bbb_bbb", "ccc.bbb_bbb");
+    // New extension is greater than previous extension
+    twe!("ccc.bbb_bbb", "aaa_aaa_aaa", "ccc.aaa_aaa_aaa");
+}
+
+#[test]
+pub fn test_with_added_extension() {
+    macro_rules! twe (
+        ($input:expr, $extension:expr, $expected:expr) => ({
+            let input = Path::new($input);
+            let output = input.with_added_extension($extension);
+
+            assert!(
+                output.to_str() == Some($expected),
+                "calling Path::new({:?}).with_added_extension({:?}): Expected {:?}, got {:?}",
+                $input, $extension, $expected, output,
+            );
+        });
+    );
+
+    twe!("foo", "txt", "foo.txt");
+    twe!("foo.bar", "txt", "foo.bar.txt");
+    twe!("foo.bar.baz", "txt", "foo.bar.baz.txt");
+    twe!(".test", "txt", ".test.txt");
+    twe!("foo.txt", "", "foo.txt");
+    twe!("foo", "", "foo");
+    twe!("", "foo", "");
+    twe!(".", "foo", ".");
+    twe!("foo/", "bar", "foo.bar");
+    twe!("foo/.", "bar", "foo.bar");
+    twe!("..", "foo", "..");
+    twe!("foo/..", "bar", "foo/..");
+    twe!("/", "foo", "/");
+
+    // edge cases
+    twe!("/foo.ext////", "bar", "/foo.ext.bar");
+
+    // New extension is smaller than file name
+    twe!("aaa_aaa_aaa", "bbb_bbb", "aaa_aaa_aaa.bbb_bbb");
+    // New extension is greater than file name
+    twe!("bbb_bbb", "aaa_aaa_aaa", "bbb_bbb.aaa_aaa_aaa");
+
+    // New extension is smaller than previous extension
+    twe!("ccc.aaa_aaa_aaa", "bbb_bbb", "ccc.aaa_aaa_aaa.bbb_bbb");
+    // New extension is greater than previous extension
+    twe!("ccc.bbb_bbb", "aaa_aaa_aaa", "ccc.bbb_bbb.aaa_aaa_aaa");
+}
+
+#[test]
+fn test_eq_receivers() {
+    use std::borrow::Cow;
+
+    let borrowed: &Path = Path::new("foo/bar");
+    let mut owned: PathBuf = PathBuf::new();
+    owned.push("foo");
+    owned.push("bar");
+    let borrowed_cow: Cow<'_, Path> = borrowed.into();
+    let owned_cow: Cow<'_, Path> = owned.clone().into();
+
+    macro_rules! t {
+        ($($current:expr),+) => {
+            $(
+                assert_eq!($current, borrowed);
+                assert_eq!($current, owned);
+                assert_eq!($current, borrowed_cow);
+                assert_eq!($current, owned_cow);
+            )+
+        }
+    }
+
+    t!(borrowed, owned, borrowed_cow, owned_cow);
+}
+
+#[test]
+pub fn test_compare() {
+    use std::hash::{DefaultHasher, Hash, Hasher};
+
+    fn hash<T: Hash>(t: T) -> u64 {
+        let mut s = DefaultHasher::new();
+        t.hash(&mut s);
+        s.finish()
+    }
+
+    macro_rules! tc (
+        ($path1:expr, $path2:expr, eq: $eq:expr,
+         starts_with: $starts_with:expr, ends_with: $ends_with:expr,
+         relative_from: $relative_from:expr) => ({
+             let path1 = Path::new($path1);
+             let path2 = Path::new($path2);
+
+             let eq = path1 == path2;
+             assert!(eq == $eq, "{:?} == {:?}, expected {:?}, got {:?}",
+                     $path1, $path2, $eq, eq);
+             assert!($eq == (hash(path1) == hash(path2)),
+                     "{:?} == {:?}, expected {:?}, got {} and {}",
+                     $path1, $path2, $eq, hash(path1), hash(path2));
+
+             let starts_with = path1.starts_with(path2);
+             assert!(starts_with == $starts_with,
+                     "{:?}.starts_with({:?}), expected {:?}, got {:?}", $path1, $path2,
+                     $starts_with, starts_with);
+
+             let ends_with = path1.ends_with(path2);
+             assert!(ends_with == $ends_with,
+                     "{:?}.ends_with({:?}), expected {:?}, got {:?}", $path1, $path2,
+                     $ends_with, ends_with);
+
+             let relative_from = path1.strip_prefix(path2)
+                                      .map(|p| p.to_str().unwrap())
+                                      .ok();
+             let exp: Option<&str> = $relative_from;
+             assert!(relative_from == exp,
+                     "{:?}.strip_prefix({:?}), expected {:?}, got {:?}",
+                     $path1, $path2, exp, relative_from);
+        });
+    );
+
+    tc!("", "",
+    eq: true,
+    starts_with: true,
+    ends_with: true,
+    relative_from: Some("")
+    );
+
+    tc!("foo", "",
+    eq: false,
+    starts_with: true,
+    ends_with: true,
+    relative_from: Some("foo")
+    );
+
+    tc!("", "foo",
+    eq: false,
+    starts_with: false,
+    ends_with: false,
+    relative_from: None
+    );
+
+    tc!("foo", "foo",
+    eq: true,
+    starts_with: true,
+    ends_with: true,
+    relative_from: Some("")
+    );
+
+    tc!("foo/", "foo",
+    eq: true,
+    starts_with: true,
+    ends_with: true,
+    relative_from: Some("")
+    );
+
+    tc!("foo//", "foo",
+    eq: true,
+    starts_with: true,
+    ends_with: true,
+    relative_from: Some("")
+    );
+
+    tc!("foo///", "foo",
+    eq: true,
+    starts_with: true,
+    ends_with: true,
+    relative_from: Some("")
+    );
+
+    tc!("foo/.", "foo",
+    eq: true,
+    starts_with: true,
+    ends_with: true,
+    relative_from: Some("")
+    );
+
+    tc!("foo/./bar", "foo/bar",
+    eq: true,
+    starts_with: true,
+    ends_with: true,
+    relative_from: Some("")
+    );
+
+    tc!("foo/.//bar", "foo/bar",
+    eq: true,
+    starts_with: true,
+    ends_with: true,
+    relative_from: Some("")
+    );
+
+    tc!("foo//./bar", "foo/bar",
+    eq: true,
+    starts_with: true,
+    ends_with: true,
+    relative_from: Some("")
+    );
+
+    tc!("foo/bar", "foo",
+    eq: false,
+    starts_with: true,
+    ends_with: false,
+    relative_from: Some("bar")
+    );
+
+    tc!("foo/bar", "foobar",
+    eq: false,
+    starts_with: false,
+    ends_with: false,
+    relative_from: None
+    );
+
+    tc!("foo/bar/baz", "foo/bar",
+    eq: false,
+    starts_with: true,
+    ends_with: false,
+    relative_from: Some("baz")
+    );
+
+    tc!("foo/bar", "foo/bar/baz",
+    eq: false,
+    starts_with: false,
+    ends_with: false,
+    relative_from: None
+    );
+
+    tc!("./foo/bar/", ".",
+    eq: false,
+    starts_with: true,
+    ends_with: false,
+    relative_from: Some("foo/bar")
+    );
+
+    if cfg!(windows) {
+        tc!(r"C:\src\rust\cargo-test\test\Cargo.toml",
+        r"c:\src\rust\cargo-test\test",
+        eq: false,
+        starts_with: true,
+        ends_with: false,
+        relative_from: Some("Cargo.toml")
+        );
+
+        tc!(r"c:\foo", r"C:\foo",
+        eq: true,
+        starts_with: true,
+        ends_with: true,
+        relative_from: Some("")
+        );
+
+        tc!(r"C:\foo\.\bar.txt", r"C:\foo\bar.txt",
+        eq: true,
+        starts_with: true,
+        ends_with: true,
+        relative_from: Some("")
+        );
+
+        tc!(r"C:\foo\.", r"C:\foo",
+        eq: true,
+        starts_with: true,
+        ends_with: true,
+        relative_from: Some("")
+        );
+
+        tc!(r"\\?\C:\foo\.\bar.txt", r"\\?\C:\foo\bar.txt",
+        eq: false,
+        starts_with: false,
+        ends_with: false,
+        relative_from: None
+        );
+    }
+}
+
+#[test]
+fn test_components_debug() {
+    let path = Path::new("/tmp");
+
+    let mut components = path.components();
+
+    let expected = "Components([RootDir, Normal(\"tmp\")])";
+    let actual = format!("{components:?}");
+    assert_eq!(expected, actual);
+
+    let _ = components.next().unwrap();
+    let expected = "Components([Normal(\"tmp\")])";
+    let actual = format!("{components:?}");
+    assert_eq!(expected, actual);
+
+    let _ = components.next().unwrap();
+    let expected = "Components([])";
+    let actual = format!("{components:?}");
+    assert_eq!(expected, actual);
+}
+
+#[cfg(any(unix, target_os = "wasi"))]
+#[test]
+fn test_iter_debug() {
+    let path = Path::new("/tmp");
+
+    let mut iter = path.iter();
+
+    let expected = "Iter([\"/\", \"tmp\"])";
+    let actual = format!("{iter:?}");
+    assert_eq!(expected, actual);
+
+    let _ = iter.next().unwrap();
+    let expected = "Iter([\"tmp\"])";
+    let actual = format!("{iter:?}");
+    assert_eq!(expected, actual);
+
+    let _ = iter.next().unwrap();
+    let expected = "Iter([])";
+    let actual = format!("{iter:?}");
+    assert_eq!(expected, actual);
+}
+
+#[test]
+fn into_boxed() {
+    let orig: &str = "some/sort/of/path";
+    let path = Path::new(orig);
+    let boxed: Box<Path> = Box::from(path);
+    let path_buf = path.to_owned().into_boxed_path().into_path_buf();
+    assert_eq!(path, &*boxed);
+    assert_eq!(&*boxed, &*path_buf);
+    assert_eq!(&*path_buf, path);
+}
+
+#[test]
+fn test_clone_into() {
+    let mut path_buf = PathBuf::from("supercalifragilisticexpialidocious");
+    let path = Path::new("short");
+    path.clone_into(&mut path_buf);
+    assert_eq!(path, path_buf);
+    assert!(path_buf.into_os_string().capacity() >= 15);
+}
+
+#[test]
+fn display_format_flags() {
+    assert_eq!(format!("a{:#<5}b", Path::new("").display()), "a#####b");
+    assert_eq!(format!("a{:#<5}b", Path::new("a").display()), "aa####b");
+}
+
+#[test]
+fn into_rc() {
+    let orig = "hello/world";
+    let path = Path::new(orig);
+    let rc: Rc<Path> = Rc::from(path);
+    let arc: Arc<Path> = Arc::from(path);
+
+    assert_eq!(&*rc, path);
+    assert_eq!(&*arc, path);
+
+    let rc2: Rc<Path> = Rc::from(path.to_owned());
+    let arc2: Arc<Path> = Arc::from(path.to_owned());
+
+    assert_eq!(&*rc2, path);
+    assert_eq!(&*arc2, path);
+}
+
+#[test]
+fn test_ord() {
+    macro_rules! ord(
+        ($ord:ident, $left:expr, $right:expr) => ({
+            use core::cmp::Ordering;
+
+            let left = Path::new($left);
+            let right = Path::new($right);
+            assert_eq!(left.cmp(&right), Ordering::$ord);
+            if (core::cmp::Ordering::$ord == Ordering::Equal) {
+                assert_eq!(left, right);
+
+                let mut hasher = DefaultHasher::new();
+                left.hash(&mut hasher);
+                let left_hash = hasher.finish();
+                hasher = DefaultHasher::new();
+                right.hash(&mut hasher);
+                let right_hash = hasher.finish();
+
+                assert_eq!(left_hash, right_hash, "hashes for {:?} and {:?} must match", left, right);
+            } else {
+                assert_ne!(left, right);
+            }
+        });
+    );
+
+    ord!(Less, "1", "2");
+    ord!(Less, "/foo/bar", "/foo./bar");
+    ord!(Less, "foo/bar", "foo/bar.");
+    ord!(Equal, "foo/./bar", "foo/bar/");
+    ord!(Equal, "foo/bar", "foo/bar/");
+    ord!(Equal, "foo/bar", "foo/bar/.");
+    ord!(Equal, "foo/bar", "foo/bar//");
+}
+
+#[test]
+#[cfg(any(unix, target_os = "wasi"))]
+fn test_unix_absolute() {
+    use std::path::absolute;
+
+    assert!(absolute("").is_err());
+
+    let relative = "a/b";
+    let mut expected = std::env::current_dir().unwrap();
+    expected.push(relative);
+    assert_eq!(absolute(relative).unwrap().as_os_str(), expected.as_os_str());
+
+    // Test how components are collected.
+    assert_eq!(absolute("/a/b/c").unwrap().as_os_str(), Path::new("/a/b/c").as_os_str());
+    assert_eq!(absolute("/a//b/c").unwrap().as_os_str(), Path::new("/a/b/c").as_os_str());
+    assert_eq!(absolute("//a/b/c").unwrap().as_os_str(), Path::new("//a/b/c").as_os_str());
+    assert_eq!(absolute("///a/b/c").unwrap().as_os_str(), Path::new("/a/b/c").as_os_str());
+    assert_eq!(absolute("/a/b/c/").unwrap().as_os_str(), Path::new("/a/b/c/").as_os_str());
+    assert_eq!(
+        absolute("/a/./b/../c/.././..").unwrap().as_os_str(),
+        Path::new("/a/b/../c/../..").as_os_str()
+    );
+
+    // Test leading `.` and `..` components
+    let curdir = std::env::current_dir().unwrap();
+    assert_eq!(absolute("./a").unwrap().as_os_str(), curdir.join("a").as_os_str());
+    assert_eq!(absolute("../a").unwrap().as_os_str(), curdir.join("../a").as_os_str()); // return /pwd/../a
+}
+
+#[test]
+#[cfg(windows)]
+fn test_windows_absolute() {
+    use std::path::absolute;
+    // An empty path is an error.
+    assert!(absolute("").is_err());
+
+    let relative = r"a\b";
+    let mut expected = std::env::current_dir().unwrap();
+    expected.push(relative);
+    assert_eq!(absolute(relative).unwrap().as_os_str(), expected.as_os_str());
+
+    macro_rules! unchanged(
+        ($path:expr) => {
+            assert_eq!(absolute($path).unwrap().as_os_str(), Path::new($path).as_os_str());
+        }
+    );
+
+    unchanged!(r"C:\path\to\file");
+    unchanged!(r"C:\path\to\file\");
+    unchanged!(r"\\server\share\to\file");
+    unchanged!(r"\\server.\share.\to\file");
+    unchanged!(r"\\.\PIPE\name");
+    unchanged!(r"\\.\C:\path\to\COM1");
+    unchanged!(r"\\?\C:\path\to\file");
+    unchanged!(r"\\?\UNC\server\share\to\file");
+    unchanged!(r"\\?\PIPE\name");
+    // Verbatim paths are always unchanged, no matter what.
+    unchanged!(r"\\?\path.\to/file..");
+
+    assert_eq!(
+        absolute(r"C:\path..\to.\file.").unwrap().as_os_str(),
+        Path::new(r"C:\path..\to\file").as_os_str()
+    );
+    assert_eq!(absolute(r"COM1").unwrap().as_os_str(), Path::new(r"\\.\COM1").as_os_str());
+}
+
+#[test]
+#[should_panic = "path separator"]
+fn test_extension_path_sep() {
+    let mut path = PathBuf::from("path/to/file");
+    path.set_extension("d/../../../../../etc/passwd");
+}
+
+#[test]
+#[should_panic = "path separator"]
+#[cfg(windows)]
+fn test_extension_path_sep_alternate() {
+    let mut path = PathBuf::from("path/to/file");
+    path.set_extension("d\\test");
+}
+
+#[test]
+#[cfg(not(windows))]
+fn test_extension_path_sep_alternate() {
+    let mut path = PathBuf::from("path/to/file");
+    path.set_extension("d\\test");
+    assert_eq!(path, Path::new("path/to/file.d\\test"));
+}
+
+#[test]
+fn clone_to_uninit() {
+    let a = Path::new("hello.txt");
+
+    let mut storage = vec![MaybeUninit::<u8>::uninit(); size_of_val::<Path>(a)];
+    unsafe { a.clone_to_uninit(ptr::from_mut::<[_]>(storage.as_mut_slice()).cast()) };
+    assert_eq!(a.as_os_str().as_encoded_bytes(), unsafe { storage.assume_init_ref() });
+
+    let mut b: Box<Path> = Path::new("world.exe").into();
+    assert_eq!(size_of_val::<Path>(a), size_of_val::<Path>(&b));
+    assert_ne!(a, &*b);
+    unsafe { a.clone_to_uninit(ptr::from_mut::<Path>(&mut b).cast()) };
+    assert_eq!(a, &*b);
+}