[
    {
        "description": "Create a machine that increases the number of a's in the string",
        "testCases": [
            {
                "a": "aa"
            },
            {
                "": "a"
            },
            {
                "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
            }
        ],
        "graph": {
            "nodes": [],
            "edges": []
        }
    }
]