feat(content): more test cases

backend/data/questions/reverse-integer.yaml

@@ -8,6 +8,32 @@ categories:
 patterns:
   - greedy
 
+function_signature: "def reverse(x: int) -> int:"
+
+test_cases:
+  visible:
+    - input: { x: 123 }
+      expected: 321
+    - input: { x: -123 }
+      expected: -321
+    - input: { x: 120 }
+      expected: 21
+  hidden:
+    - input: { x: 0 }
+      expected: 0
+    - input: { x: -120 }
+      expected: -21
+    - input: { x: 1534236469 }
+      expected: 0
+    - input: { x: -2147483648 }
+      expected: 0
+    - input: { x: 2147483647 }
+      expected: 0
+    - input: { x: 1463847412 }
+      expected: 2147483641
+    - input: { x: -1 }
+      expected: -1
+
 description: |
   Given a signed 32-bit integer `x`, return `x` *with its digits reversed*. If reversing `x` causes the value to go outside the signed 32-bit integer range `[-2^31, 2^31 - 1]`, then return `0`.