[
  {
    "id": "$toString baseline",
    "operator": "$toString",
    "kind": "baseline",
    "operand": "all",
    "expression": {
      "$toString": 12
    },
    "input": {},
    "srotax": {
      "bson": "{\"v\": \"12\"}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": \"12\"}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$toString input: null",
    "operator": "$toString",
    "kind": "null",
    "operand": "input",
    "expression": {
      "$toString": "$probe"
    },
    "input": {
      "probe": null
    },
    "srotax": {
      "bson": "{\"v\": null}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": null}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$toString input: missing",
    "operator": "$toString",
    "kind": "missing",
    "operand": "input",
    "expression": {
      "$toString": "$probe"
    },
    "input": {},
    "srotax": {
      "bson": "{\"v\": null}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": null}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$toString input: zero",
    "operator": "$toString",
    "kind": "zero",
    "operand": "input",
    "expression": {
      "$toString": "$probe"
    },
    "input": {
      "probe": 0
    },
    "srotax": {
      "bson": "{\"v\": \"0\"}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": \"0\"}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$toString input: negative",
    "operator": "$toString",
    "kind": "negative",
    "operand": "input",
    "expression": {
      "$toString": "$probe"
    },
    "input": {
      "probe": -2
    },
    "srotax": {
      "bson": "{\"v\": \"-2\"}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": \"-2\"}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$toString input: decimal",
    "operator": "$toString",
    "kind": "decimal",
    "operand": "input",
    "expression": {
      "$toString": "$probe"
    },
    "input": {
      "probe": 2.5
    },
    "srotax": {
      "bson": "{\"v\": \"2.5\"}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": \"2.5\"}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$toString input: numeric string",
    "operator": "$toString",
    "kind": "numeric string",
    "operand": "input",
    "expression": {
      "$toString": "$probe"
    },
    "input": {
      "probe": "12"
    },
    "srotax": {
      "bson": "{\"v\": \"12\"}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": \"12\"}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$toString input: text",
    "operator": "$toString",
    "kind": "text",
    "operand": "input",
    "expression": {
      "$toString": "$probe"
    },
    "input": {
      "probe": "hello"
    },
    "srotax": {
      "bson": "{\"v\": \"hello\"}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": \"hello\"}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$toString input: empty string",
    "operator": "$toString",
    "kind": "empty string",
    "operand": "input",
    "expression": {
      "$toString": "$probe"
    },
    "input": {
      "probe": ""
    },
    "srotax": {
      "bson": "{\"v\": \"\"}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": \"\"}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$toString input: boolean",
    "operator": "$toString",
    "kind": "boolean",
    "operand": "input",
    "expression": {
      "$toString": "$probe"
    },
    "input": {
      "probe": true
    },
    "srotax": {
      "bson": "{\"v\": \"true\"}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": \"true\"}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$toString input: false",
    "operator": "$toString",
    "kind": "false",
    "operand": "input",
    "expression": {
      "$toString": "$probe"
    },
    "input": {
      "probe": false
    },
    "srotax": {
      "bson": "{\"v\": \"false\"}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": \"false\"}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$toString input: typed date",
    "operator": "$toString",
    "kind": "typed date",
    "operand": "input",
    "expression": {
      "$toString": "$probe"
    },
    "input": {
      "probe": {
        "$date": "2026-01-15T15:00:00Z"
      }
    },
    "srotax": {
      "bson": "{\"v\": \"2026-01-15T15:00:00.000Z\"}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": \"2026-01-15T15:00:00.000Z\"}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$toString input: decimal128",
    "operator": "$toString",
    "kind": "decimal128",
    "operand": "input",
    "expression": {
      "$toString": "$probe"
    },
    "input": {
      "probe": {
        "$numberDecimal": "1.25"
      }
    },
    "srotax": {
      "bson": "{\"v\": \"1.25\"}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": \"1.25\"}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$toString input: empty array",
    "operator": "$toString",
    "kind": "empty array",
    "operand": "input",
    "expression": {
      "$toString": "$probe"
    },
    "input": {
      "probe": []
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$convert failed for target string"
    },
    "mongo": {
      "bson": "{\"v\": \"[]\"}",
      "present": true
    },
    "status": "DIFFERENCE"
  },
  {
    "id": "$toString input: numeric array",
    "operator": "$toString",
    "kind": "numeric array",
    "operand": "input",
    "expression": {
      "$toString": "$probe"
    },
    "input": {
      "probe": [
        1,
        2,
        3
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$convert failed for target string"
    },
    "mongo": {
      "bson": "{\"v\": \"[1,2,3]\"}",
      "present": true
    },
    "status": "DIFFERENCE"
  },
  {
    "id": "$toString input: mixed array",
    "operator": "$toString",
    "kind": "mixed array",
    "operand": "input",
    "expression": {
      "$toString": "$probe"
    },
    "input": {
      "probe": [
        1,
        null,
        "x",
        3
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$convert failed for target string"
    },
    "mongo": {
      "bson": "{\"v\": \"[1,null,\\\"x\\\",3]\"}",
      "present": true
    },
    "status": "DIFFERENCE"
  },
  {
    "id": "$toString input: nested array",
    "operator": "$toString",
    "kind": "nested array",
    "operand": "input",
    "expression": {
      "$toString": "$probe"
    },
    "input": {
      "probe": [
        [
          1,
          2
        ],
        [
          3
        ]
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$convert failed for target string"
    },
    "mongo": {
      "bson": "{\"v\": \"[[1,2],[3]]\"}",
      "present": true
    },
    "status": "DIFFERENCE"
  },
  {
    "id": "$toString input: empty object",
    "operator": "$toString",
    "kind": "empty object",
    "operand": "input",
    "expression": {
      "$toString": "$probe"
    },
    "input": {
      "probe": {}
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$convert failed for target string"
    },
    "mongo": {
      "bson": "{\"v\": \"{}\"}",
      "present": true
    },
    "status": "DIFFERENCE"
  },
  {
    "id": "$toString input: object",
    "operator": "$toString",
    "kind": "object",
    "operand": "input",
    "expression": {
      "$toString": "$probe"
    },
    "input": {
      "probe": {
        "x": 1
      }
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$convert failed for target string"
    },
    "mongo": {
      "bson": "{\"v\": \"{\\\"x\\\":1}\"}",
      "present": true
    },
    "status": "DIFFERENCE"
  },
  {
    "id": "$toString input: ISO date string",
    "operator": "$toString",
    "kind": "ISO date string",
    "operand": "input",
    "expression": {
      "$toString": "$probe"
    },
    "input": {
      "probe": "2026-01-15T15:00:00Z"
    },
    "srotax": {
      "bson": "{\"v\": \"2026-01-15T15:00:00Z\"}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": \"2026-01-15T15:00:00Z\"}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$toString empty arguments",
    "operator": "$toString",
    "kind": "empty arguments",
    "operand": "all",
    "expression": {
      "$toString": []
    },
    "input": {},
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$convert failed for target string"
    },
    "mongo": {
      "message": "Invalid $project :: caused by :: $toString requires a single argument, got 0",
      "code": 50723,
      "error": "Location50723"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$toString unknown option",
    "operator": "$toString",
    "kind": "unknown option",
    "operand": "all",
    "expression": {
      "$toString": {
        "unexpected": 1
      }
    },
    "input": {},
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$convert failed for target string"
    },
    "mongo": {
      "bson": "{\"v\": \"{\\\"unexpected\\\":1}\"}",
      "present": true
    },
    "status": "DIFFERENCE"
  }
]