robin-sparkless 4.4.0

PySpark-like DataFrame API in Rust on Polars; no JVM.
Documentation 
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{
  "test_id": "from_json",
  "pyspark_version": "3.5",
  "generated_at": "2025-10-27T14:13:29.057206",
  "input_data": [
    {
      "id": 1,
      "json_str": "{\"name\":\"Alice\",\"age\":25}",
      "name": "Alice",
      "age": 25
    },
    {
      "id": 2,
      "json_str": "{\"name\":\"Bob\",\"age\":30}",
      "name": "Bob",
      "age": 30
    }
  ],
  "operation": "DataFrame operation: from_json",
  "expected_output": {
    "schema": {
      "field_count": 1,
      "field_names": [
        "from_json(json_str)"
      ],
      "field_types": [
        "struct"
      ],
      "fields": [
        {
          "name": "from_json(json_str)",
          "type": "struct",
          "nullable": true
        }
      ]
    },
    "data": [
      {
        "from_json(json_str)": {
          "name": "Alice",
          "age": 25
        }
      },
      {
        "from_json(json_str)": {
          "name": "Bob",
          "age": 30
        }
      }
    ],
    "row_count": 2
  }
}