{
  "cases": [
    {
      "description": "irregular Matrix",
      "property": "saddlePoints",
      "input": {
        "matrix": [
          [3, 2, 1],
          [0, 1],
          [2, 1, 0]
        ]
      },
      "expected": {
        "error": "irregular matrix"
      }
    }
  ]
}
