feat(content): more test cases

backend/data/questions/candy.yaml

@@ -8,6 +8,30 @@ categories:
 patterns:
   - greedy
 
+function_signature: "def candy(ratings: list[int]) -> int:"
+
+test_cases:
+  visible:
+    - input: { ratings: [1, 0, 2] }
+      expected: 5
+    - input: { ratings: [1, 2, 2] }
+      expected: 4
+  hidden:
+    - input: { ratings: [1] }
+      expected: 1
+    - input: { ratings: [1, 2, 3, 4, 5] }
+      expected: 15
+    - input: { ratings: [5, 4, 3, 2, 1] }
+      expected: 15
+    - input: { ratings: [1, 3, 2, 2, 1] }
+      expected: 7
+    - input: { ratings: [1, 2, 3, 1, 0] }
+      expected: 9
+    - input: { ratings: [1, 3, 4, 5, 2] }
+      expected: 11
+    - input: { ratings: [1, 1, 1, 1] }
+      expected: 4
+
 description: |
   There are `n` children standing in a line. Each child is assigned a rating value given in the integer array `ratings`.