[
    {
        "description": "additionalItems as schema",
        "schema": {
            "$schema": "https://json-schema.org/draft/2019-09/schema",
            "items": [{}],
            "additionalItems": {"type": "integer"}
        },
        "tests": [
            {
                "description": "additional items match schema",
                "data": [ null, 2, 3, 4 ],
                "valid": true
            },
            {
                "description": "additional items do not match schema",
                "data": [ null, 2, 3, "foo" ],
                "valid": false
            }
        ]
    },
    {
        "description": "when items is schema, additionalItems does nothing",
        "schema": {
            "$schema": "https://json-schema.org/draft/2019-09/schema",
            "items": {},
            "additionalItems": false
        },
        "tests": [
            {
                "description": "all items match schema",
                "data": [ 1, 2, 3, 4, 5 ],
                "valid": true
            }
        ]
    },
    {
        "description": "array of items with no additionalItems permitted",
        "schema": {
            "$schema": "https://json-schema.org/draft/2019-09/schema",
            "items": [{}, {}, {}],
            "additionalItems": false
        },
        "tests": [
            {
                "description": "empty array",
                "data": [ ],
                "valid": true
            },
            {
                "description": "fewer number of items present (1)",
                "data": [ 1 ],
                "valid": true
            },
            {
                "description": "fewer number of items present (2)",
                "data": [ 1, 2 ],
                "valid": true
            },
            {
                "description": "equal number of items present",
                "data": [ 1, 2, 3 ],
                "valid": true
            },
            {
                "description": "additional items are not permitted",
                "data": [ 1, 2, 3, 4 ],
                "valid": false
            }
        ]
    },
    {
        "description": "additionalItems as false without items",
        "schema": {
            "$schema": "https://json-schema.org/draft/2019-09/schema",
            "additionalItems": false
        },
        "tests": [
            {
                "description":
                    "items defaults to empty schema so everything is valid",
                "data": [ 1, 2, 3, 4, 5 ],
                "valid": true
            },
            {
                "description": "ignores non-arrays",
                "data": {"foo" : "bar"},
                "valid": true
            }
        ]
    },
    {
        "description": "additionalItems are allowed by default",
        "schema": {
            "$schema": "https://json-schema.org/draft/2019-09/schema",
            "items": [{"type": "integer"}]
        },
        "tests": [
            {
                "description": "only the first item is validated",
                "data": [1, "foo", false],
                "valid": true
            }
        ]
    },
    {
        "description": "additionalItems does not look in applicators, valid case",
        "schema": {
            "$schema": "https://json-schema.org/draft/2019-09/schema",
            "allOf": [
                { "items": [ { "type": "integer" } ] }
            ],
            "additionalItems": { "type": "boolean" }
        },
        "tests": [
            {
                "description": "items defined in allOf are not examined",
                "data": [ 1, null ],
                "valid": true
            }
        ]
    },
    {
        "description": "additionalItems does not look in applicators, invalid case",
        "schema": {
            "$schema": "https://json-schema.org/draft/2019-09/schema",
            "allOf": [
                { "items": [ { "type": "integer" }, { "type": "string" } ] }
            ],
            "items": [ {"type": "integer" } ],
            "additionalItems": { "type": "boolean" }
        },
        "tests": [
            {
                "description": "items defined in allOf are not examined",
                "data": [ 1, "hello" ],
                "valid": false
            }
        ]
    },
    {
        "description": "items validation adjusts the starting index for additionalItems",
        "schema": {
            "$schema": "https://json-schema.org/draft/2019-09/schema",
            "items": [ { "type": "string" } ],
            "additionalItems": { "type": "integer" }
        },
        "tests": [
            {
                "description": "valid items",
                "data": [ "x", 2, 3 ],
                "valid": true
            },
            {
                "description": "wrong type of second item",
                "data": [ "x", "y" ],
                "valid": false
            }
        ]
    },
    {
        "description": "additionalItems with null instance elements",
        "schema": {
            "$schema": "https://json-schema.org/draft/2019-09/schema",
            "additionalItems": {
                "type": "null"
            }
        },
        "tests": [
            {
                "description": "allows null elements",
                "data": [ null ],
                "valid": true
            }
        ]
    }
]