data.py

test_data = [
    {
        "not_required": 1,
        "null_or_bool": None,
        "str_number": "3",
        "child": {
            "x": 1,
            "subitems": [
                {
                    "wrapper": {
                        "x": 1,
                        "subitems": None
                    }
                }, {
                    "wrapper": {
                        "x": 3,
                        "subitems": None
                    }
                },
                1,
                1.0
            ]
        }
    },
    {
        "not_required": 2,
        "null_or_bool": False,
        "str_number": "6.6",
        "child": {
            "x": 1
        }
    },
    {
        "null_or_bool": True,
        "str_number": "8",
        "3d_array": [
            [
                [0, 1, 2],
                [3, 4, 5],
                [6, 7, 8]
            ],
            [
                [0, 1, 2],
                [3, 4, 5],
                [6, 7, 8]
            ],
            [
                [0, 1, 2],
                [3, 4, 5],
                [6, 7, 8]
            ]
        ]
    },
]