[
  {
    "id": "$mergeObjects baseline",
    "operator": "$mergeObjects",
    "kind": "baseline",
    "operand": "all",
    "expression": {
      "$mergeObjects": [
        {
          "a": 1
        },
        {
          "b": 2
        }
      ]
    },
    "input": {},
    "srotax": {
      "bson": "{\"v\": {\"a\": {\"$numberInt\": \"1\"}, \"b\": {\"$numberInt\": \"2\"}}}",
      "present": true
    }
  },
  {
    "id": "$mergeObjects object[0]: null",
    "operator": "$mergeObjects",
    "kind": "null",
    "operand": "object[0]",
    "expression": {
      "$mergeObjects": [
        "$probe",
        {
          "b": 2
        }
      ]
    },
    "input": {
      "probe": null
    },
    "srotax": {
      "bson": "{\"v\": {\"b\": {\"$numberInt\": \"2\"}}}",
      "present": true
    }
  },
  {
    "id": "$mergeObjects object[0]: missing",
    "operator": "$mergeObjects",
    "kind": "missing",
    "operand": "object[0]",
    "expression": {
      "$mergeObjects": [
        "$probe",
        {
          "b": 2
        }
      ]
    },
    "input": {},
    "srotax": {
      "bson": "{\"v\": {\"b\": {\"$numberInt\": \"2\"}}}",
      "present": true
    }
  },
  {
    "id": "$mergeObjects object[0]: zero",
    "operator": "$mergeObjects",
    "kind": "zero",
    "operand": "object[0]",
    "expression": {
      "$mergeObjects": [
        "$probe",
        {
          "b": 2
        }
      ]
    },
    "input": {
      "probe": 0
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[0]: negative",
    "operator": "$mergeObjects",
    "kind": "negative",
    "operand": "object[0]",
    "expression": {
      "$mergeObjects": [
        "$probe",
        {
          "b": 2
        }
      ]
    },
    "input": {
      "probe": -2
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[0]: decimal",
    "operator": "$mergeObjects",
    "kind": "decimal",
    "operand": "object[0]",
    "expression": {
      "$mergeObjects": [
        "$probe",
        {
          "b": 2
        }
      ]
    },
    "input": {
      "probe": 2.5
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[0]: numeric string",
    "operator": "$mergeObjects",
    "kind": "numeric string",
    "operand": "object[0]",
    "expression": {
      "$mergeObjects": [
        "$probe",
        {
          "b": 2
        }
      ]
    },
    "input": {
      "probe": "12"
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[0]: text",
    "operator": "$mergeObjects",
    "kind": "text",
    "operand": "object[0]",
    "expression": {
      "$mergeObjects": [
        "$probe",
        {
          "b": 2
        }
      ]
    },
    "input": {
      "probe": "hello"
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[0]: empty string",
    "operator": "$mergeObjects",
    "kind": "empty string",
    "operand": "object[0]",
    "expression": {
      "$mergeObjects": [
        "$probe",
        {
          "b": 2
        }
      ]
    },
    "input": {
      "probe": ""
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[0]: boolean",
    "operator": "$mergeObjects",
    "kind": "boolean",
    "operand": "object[0]",
    "expression": {
      "$mergeObjects": [
        "$probe",
        {
          "b": 2
        }
      ]
    },
    "input": {
      "probe": true
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[0]: false",
    "operator": "$mergeObjects",
    "kind": "false",
    "operand": "object[0]",
    "expression": {
      "$mergeObjects": [
        "$probe",
        {
          "b": 2
        }
      ]
    },
    "input": {
      "probe": false
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[0]: typed date",
    "operator": "$mergeObjects",
    "kind": "typed date",
    "operand": "object[0]",
    "expression": {
      "$mergeObjects": [
        "$probe",
        {
          "b": 2
        }
      ]
    },
    "input": {
      "probe": {
        "$date": "2026-01-15T15:00:00Z"
      }
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[0]: decimal128",
    "operator": "$mergeObjects",
    "kind": "decimal128",
    "operand": "object[0]",
    "expression": {
      "$mergeObjects": [
        "$probe",
        {
          "b": 2
        }
      ]
    },
    "input": {
      "probe": {
        "$numberDecimal": "1.25"
      }
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[0]: empty array",
    "operator": "$mergeObjects",
    "kind": "empty array",
    "operand": "object[0]",
    "expression": {
      "$mergeObjects": [
        "$probe",
        {
          "b": 2
        }
      ]
    },
    "input": {
      "probe": []
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[0]: numeric array",
    "operator": "$mergeObjects",
    "kind": "numeric array",
    "operand": "object[0]",
    "expression": {
      "$mergeObjects": [
        "$probe",
        {
          "b": 2
        }
      ]
    },
    "input": {
      "probe": [
        1,
        2,
        3
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[0]: mixed array",
    "operator": "$mergeObjects",
    "kind": "mixed array",
    "operand": "object[0]",
    "expression": {
      "$mergeObjects": [
        "$probe",
        {
          "b": 2
        }
      ]
    },
    "input": {
      "probe": [
        1,
        null,
        "x",
        3
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[0]: nested array",
    "operator": "$mergeObjects",
    "kind": "nested array",
    "operand": "object[0]",
    "expression": {
      "$mergeObjects": [
        "$probe",
        {
          "b": 2
        }
      ]
    },
    "input": {
      "probe": [
        [
          1,
          2
        ],
        [
          3
        ]
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[0]: empty object",
    "operator": "$mergeObjects",
    "kind": "empty object",
    "operand": "object[0]",
    "expression": {
      "$mergeObjects": [
        "$probe",
        {
          "b": 2
        }
      ]
    },
    "input": {
      "probe": {}
    },
    "srotax": {
      "bson": "{\"v\": {\"b\": {\"$numberInt\": \"2\"}}}",
      "present": true
    }
  },
  {
    "id": "$mergeObjects object[0]: object",
    "operator": "$mergeObjects",
    "kind": "object",
    "operand": "object[0]",
    "expression": {
      "$mergeObjects": [
        "$probe",
        {
          "b": 2
        }
      ]
    },
    "input": {
      "probe": {
        "x": 1
      }
    },
    "srotax": {
      "bson": "{\"v\": {\"x\": {\"$numberInt\": \"1\"}, \"b\": {\"$numberInt\": \"2\"}}}",
      "present": true
    }
  },
  {
    "id": "$mergeObjects object[0]: ISO date string",
    "operator": "$mergeObjects",
    "kind": "ISO date string",
    "operand": "object[0]",
    "expression": {
      "$mergeObjects": [
        "$probe",
        {
          "b": 2
        }
      ]
    },
    "input": {
      "probe": "2026-01-15T15:00:00Z"
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[1]: null",
    "operator": "$mergeObjects",
    "kind": "null",
    "operand": "object[1]",
    "expression": {
      "$mergeObjects": [
        {
          "a": 1
        },
        "$probe"
      ]
    },
    "input": {
      "probe": null
    },
    "srotax": {
      "bson": "{\"v\": {\"a\": {\"$numberInt\": \"1\"}}}",
      "present": true
    }
  },
  {
    "id": "$mergeObjects object[1]: missing",
    "operator": "$mergeObjects",
    "kind": "missing",
    "operand": "object[1]",
    "expression": {
      "$mergeObjects": [
        {
          "a": 1
        },
        "$probe"
      ]
    },
    "input": {},
    "srotax": {
      "bson": "{\"v\": {\"a\": {\"$numberInt\": \"1\"}}}",
      "present": true
    }
  },
  {
    "id": "$mergeObjects object[1]: zero",
    "operator": "$mergeObjects",
    "kind": "zero",
    "operand": "object[1]",
    "expression": {
      "$mergeObjects": [
        {
          "a": 1
        },
        "$probe"
      ]
    },
    "input": {
      "probe": 0
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[1]: negative",
    "operator": "$mergeObjects",
    "kind": "negative",
    "operand": "object[1]",
    "expression": {
      "$mergeObjects": [
        {
          "a": 1
        },
        "$probe"
      ]
    },
    "input": {
      "probe": -2
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[1]: decimal",
    "operator": "$mergeObjects",
    "kind": "decimal",
    "operand": "object[1]",
    "expression": {
      "$mergeObjects": [
        {
          "a": 1
        },
        "$probe"
      ]
    },
    "input": {
      "probe": 2.5
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[1]: numeric string",
    "operator": "$mergeObjects",
    "kind": "numeric string",
    "operand": "object[1]",
    "expression": {
      "$mergeObjects": [
        {
          "a": 1
        },
        "$probe"
      ]
    },
    "input": {
      "probe": "12"
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[1]: text",
    "operator": "$mergeObjects",
    "kind": "text",
    "operand": "object[1]",
    "expression": {
      "$mergeObjects": [
        {
          "a": 1
        },
        "$probe"
      ]
    },
    "input": {
      "probe": "hello"
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[1]: empty string",
    "operator": "$mergeObjects",
    "kind": "empty string",
    "operand": "object[1]",
    "expression": {
      "$mergeObjects": [
        {
          "a": 1
        },
        "$probe"
      ]
    },
    "input": {
      "probe": ""
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[1]: boolean",
    "operator": "$mergeObjects",
    "kind": "boolean",
    "operand": "object[1]",
    "expression": {
      "$mergeObjects": [
        {
          "a": 1
        },
        "$probe"
      ]
    },
    "input": {
      "probe": true
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[1]: false",
    "operator": "$mergeObjects",
    "kind": "false",
    "operand": "object[1]",
    "expression": {
      "$mergeObjects": [
        {
          "a": 1
        },
        "$probe"
      ]
    },
    "input": {
      "probe": false
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[1]: typed date",
    "operator": "$mergeObjects",
    "kind": "typed date",
    "operand": "object[1]",
    "expression": {
      "$mergeObjects": [
        {
          "a": 1
        },
        "$probe"
      ]
    },
    "input": {
      "probe": {
        "$date": "2026-01-15T15:00:00Z"
      }
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[1]: decimal128",
    "operator": "$mergeObjects",
    "kind": "decimal128",
    "operand": "object[1]",
    "expression": {
      "$mergeObjects": [
        {
          "a": 1
        },
        "$probe"
      ]
    },
    "input": {
      "probe": {
        "$numberDecimal": "1.25"
      }
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[1]: empty array",
    "operator": "$mergeObjects",
    "kind": "empty array",
    "operand": "object[1]",
    "expression": {
      "$mergeObjects": [
        {
          "a": 1
        },
        "$probe"
      ]
    },
    "input": {
      "probe": []
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[1]: numeric array",
    "operator": "$mergeObjects",
    "kind": "numeric array",
    "operand": "object[1]",
    "expression": {
      "$mergeObjects": [
        {
          "a": 1
        },
        "$probe"
      ]
    },
    "input": {
      "probe": [
        1,
        2,
        3
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[1]: mixed array",
    "operator": "$mergeObjects",
    "kind": "mixed array",
    "operand": "object[1]",
    "expression": {
      "$mergeObjects": [
        {
          "a": 1
        },
        "$probe"
      ]
    },
    "input": {
      "probe": [
        1,
        null,
        "x",
        3
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[1]: nested array",
    "operator": "$mergeObjects",
    "kind": "nested array",
    "operand": "object[1]",
    "expression": {
      "$mergeObjects": [
        {
          "a": 1
        },
        "$probe"
      ]
    },
    "input": {
      "probe": [
        [
          1,
          2
        ],
        [
          3
        ]
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects object[1]: empty object",
    "operator": "$mergeObjects",
    "kind": "empty object",
    "operand": "object[1]",
    "expression": {
      "$mergeObjects": [
        {
          "a": 1
        },
        "$probe"
      ]
    },
    "input": {
      "probe": {}
    },
    "srotax": {
      "bson": "{\"v\": {\"a\": {\"$numberInt\": \"1\"}}}",
      "present": true
    }
  },
  {
    "id": "$mergeObjects object[1]: object",
    "operator": "$mergeObjects",
    "kind": "object",
    "operand": "object[1]",
    "expression": {
      "$mergeObjects": [
        {
          "a": 1
        },
        "$probe"
      ]
    },
    "input": {
      "probe": {
        "x": 1
      }
    },
    "srotax": {
      "bson": "{\"v\": {\"a\": {\"$numberInt\": \"1\"}, \"x\": {\"$numberInt\": \"1\"}}}",
      "present": true
    }
  },
  {
    "id": "$mergeObjects object[1]: ISO date string",
    "operator": "$mergeObjects",
    "kind": "ISO date string",
    "operand": "object[1]",
    "expression": {
      "$mergeObjects": [
        {
          "a": 1
        },
        "$probe"
      ]
    },
    "input": {
      "probe": "2026-01-15T15:00:00Z"
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$mergeObjects only accepts documents (objects)."
    }
  },
  {
    "id": "$mergeObjects empty arguments",
    "operator": "$mergeObjects",
    "kind": "empty arguments",
    "operand": "all",
    "expression": {
      "$mergeObjects": []
    },
    "input": {},
    "srotax": {
      "bson": "{\"v\": {}}",
      "present": true
    }
  },
  {
    "id": "$mergeObjects unknown option",
    "operator": "$mergeObjects",
    "kind": "unknown option",
    "operand": "all",
    "expression": {
      "$mergeObjects": {
        "unexpected": 1
      }
    },
    "input": {},
    "srotax": {
      "bson": "{\"v\": {\"unexpected\": {\"$numberInt\": \"1\"}}}",
      "present": true
    }
  }
]