feat(content): hidden test cases

backend/data/questions/search-a-2d-matrix.yaml

@@ -10,6 +10,26 @@ patterns:
   - binary-search
   - matrix-traversal
 
+function_signature: "def search_matrix(matrix: list[list[int]], target: int) -> bool:"
+
+test_cases:
+  visible:
+    - input: { matrix: [[1, 3, 5, 7], [10, 11, 16, 20], [23, 30, 34, 60]], target: 3 }
+      expected: true
+    - input: { matrix: [[1, 3, 5, 7], [10, 11, 16, 20], [23, 30, 34, 60]], target: 13 }
+      expected: false
+  hidden:
+    - input: { matrix: [[1]], target: 1 }
+      expected: true
+    - input: { matrix: [[1]], target: 0 }
+      expected: false
+    - input: { matrix: [[1, 2, 3]], target: 2 }
+      expected: true
+    - input: { matrix: [[1], [2], [3]], target: 3 }
+      expected: true
+    - input: { matrix: [[1, 2], [3, 4]], target: 5 }
+      expected: false
+
 description: |
   You are given an `m x n` integer matrix `matrix` with the following two properties: