feat(content): hidden test cases

backend/data/questions/simplify-path.yaml

@@ -9,6 +9,30 @@ categories:
 patterns:
   - monotonic-stack
 
+function_signature: "def simplify_path(path: str) -> str:"
+
+test_cases:
+  visible:
+    - input: { path: "/home/" }
+      expected: "/home"
+    - input: { path: "/home//foo/" }
+      expected: "/home/foo"
+    - input: { path: "/home/user/Documents/../Pictures" }
+      expected: "/home/user/Pictures"
+  hidden:
+    - input: { path: "/../" }
+      expected: "/"
+    - input: { path: "/.../a/../b/c/../d/./" }
+      expected: "/.../b/d"
+    - input: { path: "/a/./b/../../c/" }
+      expected: "/c"
+    - input: { path: "/" }
+      expected: "/"
+    - input: { path: "/a//b////c/d//././/.." }
+      expected: "/a/b/c"
+    - input: { path: "/..hidden" }
+      expected: "/..hidden"
+
 description: |
   You are given an *absolute* path for a Unix-style file system, which always begins with a slash `'/'`. Your task is to transform this absolute path into its **simplified canonical path**.