Refactor: Construct IoError from std::io::Error instead of std::io::ErrorKind (#15777)

crates/nu-command/tests/commands/path/self_.rs

@@ -60,5 +60,5 @@ fn self_path_runtime() {
 fn self_path_repl() {
     let actual = nu!("const foo = path self; $foo");
     assert!(!actual.status.success());
-    assert!(actual.err.contains("nu::shell::io::not_found"));
+    assert!(actual.err.contains("nu::shell::io::file_not_found"));
 }

crates/nu-command/tests/commands/rm.rs

@@ -6,6 +6,8 @@ use nu_test_support::playground::Playground;
 use rstest::rstest;
 #[cfg(not(windows))]
 use std::fs;
+#[cfg(windows)]
+use std::{fs::OpenOptions, os::windows::fs::OpenOptionsExt};
 
 #[test]
 fn removes_a_file() {
@@ -562,3 +564,26 @@ fn rm_with_tilde() {
         assert!(!files_exist_at(&["~tilde"], dirs.test()));
     })
 }
+
+#[test]
+#[cfg(windows)]
+fn rm_already_in_use() {
+    Playground::setup("rm_already_in_use", |dirs, sandbox| {
+        sandbox.with_files(&[EmptyFile("i_will_be_used.txt")]);
+
+        let file_path = dirs.root().join("rm_already_in_use/i_will_be_used.txt");
+        let _file = OpenOptions::new()
+            .read(true)
+            .write(false)
+            .share_mode(0) // deny all sharing
+            .open(file_path)
+            .unwrap();
+
+        let outcome = nu!(
+            cwd: dirs.root(),
+            "rm rm_already_in_use/i_will_be_used.txt"
+        );
+
+        assert!(outcome.err.contains("nu::shell::io::already_in_use"));
+    })
+}