feat(content): more test cases

backend/data/questions/backspace-string-compare.yaml

@@ -10,6 +10,26 @@ categories:
 patterns:
   - two-pointers
 
+function_signature: "def backspace_compare(s: str, t: str) -> bool:"
+
+test_cases:
+  visible:
+    - input: { s: "ab#c", t: "ad#c" }
+      expected: true
+    - input: { s: "ab##", t: "c#d#" }
+      expected: true
+    - input: { s: "a#c", t: "b" }
+      expected: false
+  hidden:
+    - input: { s: "a", t: "a" }
+      expected: true
+    - input: { s: "###", t: "" }
+      expected: true
+    - input: { s: "a##b", t: "b" }
+      expected: true
+    - input: { s: "xywrrmp", t: "xywrrmu#p" }
+      expected: true
+
 description: |
   Given two strings `s` and `t`, return `true` *if they are equal when both are typed into empty text editors*. `'#'` means a backspace character.