test: implement -r/-w/-x on Windows (#11120)

* test: implement -r/-w/-x on Windows

* test: fix clippy map-then-unwrap_or lint for Windows executable check

Replace `.map(...).unwrap_or(false)` with `.is_some_and(...)` to satisfy
the `clippy::option_map_unwrap_or` lint on Windows targets.

---------

Co-authored-by: Nihal Ajayakumar <nihal.ajayakumar@gmail.com>

src/uu/test/src/test.rs

@@ -341,12 +341,15 @@ fn path(path: &OsStr, condition: &PathCondition) -> bool {
         PathCondition::Sticky => false,
         PathCondition::UserOwns => unimplemented!(),
         PathCondition::Fifo => false,
-        PathCondition::Readable => false, // TODO
+        PathCondition::Readable => true,
         PathCondition::Socket => false,
         PathCondition::NonEmpty => stat.len() > 0,
         PathCondition::UserIdFlag => false,
-        PathCondition::Writable => false,   // TODO
-        PathCondition::Executable => false, // TODO
+        PathCondition::Writable => !stat.permissions().readonly(),
+        PathCondition::Executable => std::path::Path::new(path)
+            .extension()
+            .and_then(|e| e.to_str())
+            .is_some_and(|e| matches!(e, "exe" | "bat" | "cmd" | "com")),
     }
 }
 

tests/by-util/test_test.rs

@@ -454,7 +454,6 @@ fn test_file_exists_and_is_regular() {
 }
 
 #[test]
-#[cfg(not(windows))] // FIXME: implement on Windows
 fn test_file_is_readable() {
     new_ucmd!().args(&["-r", "regular_file"]).succeeds();
 }
@@ -473,7 +472,6 @@ fn test_file_is_not_readable() {
 }
 
 #[test]
-#[cfg(not(windows))] // FIXME: implement on Windows
 fn test_file_is_writable() {
     new_ucmd!().args(&["-w", "regular_file"]).succeeds();
 }
@@ -517,7 +515,7 @@ fn test_file_is_not_executable() {
 }
 
 #[test]
-#[cfg(not(windows))] // FIXME: implement on Windows
+#[cfg(not(windows))]
 fn test_file_is_executable() {
     let scenario = TestScenario::new(util_name!());
     let mut chmod = scenario.cmd("chmod");
@@ -527,6 +525,27 @@ fn test_file_is_executable() {
     scenario.ucmd().args(&["-x", "regular_file"]).succeeds();
 }
 
+#[test]
+#[cfg(windows)]
+fn test_file_is_not_writable_windows() {
+    let (at, mut ucmd) = at_and_ucmd!();
+    at.touch("readonly_file");
+    let mut perms = std::fs::metadata(at.plus("readonly_file"))
+        .unwrap()
+        .permissions();
+    perms.set_readonly(true);
+    std::fs::set_permissions(at.plus("readonly_file"), perms).unwrap();
+    ucmd.args(&["!", "-w", "readonly_file"]).succeeds();
+}
+
+#[test]
+#[cfg(windows)]
+fn test_file_is_executable_windows() {
+    let (at, mut ucmd) = at_and_ucmd!();
+    at.touch("program.exe");
+    ucmd.args(&["-x", "program.exe"]).succeeds();
+}
+
 #[test]
 fn test_is_not_empty() {
     new_ucmd!().args(&["-s", "non_empty_file"]).succeeds();