Test case for cd

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

@@ -323,3 +323,39 @@ fn pwd_recovery() {
 
     assert_eq!(actual.out, "/");
 }
+
+#[cfg(windows)]
+#[test]
+fn filesystem_from_non_root_change_to_another_drive_non_root_then_using_relative_path_go_back() {
+    Playground::setup("cd_test_22", |dirs, sandbox| {
+        sandbox.mkdir("test_folder");
+
+        let _actual = nu!(
+            cwd: dirs.test(),
+            r#"
+                touch test_folder/test_file.txt
+            "#
+        );
+        assert!(dirs.test.exists());
+        assert!(dirs.test.join("test_folder").exists());
+        assert!(dirs.test.join("test_folder").join("test_file.txt").exists());
+        let _actual = nu!(
+            cwd: dirs.test(),
+            r#"
+                subst X: /D | touch out
+                subst X: test_folder
+                cd x:
+                touch test_file_on_x.txt
+                echo $env.PWD
+                cd -
+                subst X: /D | touch out
+                echo $env.PWD
+            "#
+        );
+        assert!(dirs.test.exists());
+        assert!(dirs.test.join("test_folder").exists());
+        assert!(_actual.out.ends_with(r"\cd_test_22"));
+        assert!(_actual.err.is_empty());
+        assert!(dirs.test.join("test_folder").join("test_file_on_x.txt").exists());
+    })
+}