[
    {
        "name": "empty item",
        "raw": [""],
        "header_type": "item",
        "must_fail": true
    },
    {
        "name": "leading space",
        "raw": [" \t 1"],
        "header_type": "item",
        "must_fail": true
    },
    {
        "name": "trailing space",
        "raw": ["1 \t "],
        "header_type": "item",
        "must_fail": true
    },
    {
        "name": "leading and trailing space",
        "raw": ["  1  "],
        "header_type": "item",
        "expected": [1, []],
        "canonical": ["1"]
    },
    {
        "name": "leading and trailing whitespace",
        "raw": ["     1  "],
        "header_type": "item",
        "expected": [1, []],
        "canonical": ["1"]
    }
]