ref.json

[
    {
        "description": "cannot be object",
        "schema": { "$ref": {} },
        "instance": {}
    },
    {
        "description": "cannot be array",
        "schema": { "$ref": [] },
        "instance": {}
    },
    {
        "description": "cannot be boolean",
        "schema": { "$ref": false },
        "instance": {}
    },
    {
        "description": "cannot be number",
        "schema": { "$ref": 42 },
        "instance": {}
    },
    {
        "description": "cannot be null",
        "schema": { "$ref": null },
        "instance": {}
    },
    {
        "description": "infinite loop $ref",
        "schema": { "$ref": "#" },
        "instance": {}
    },
    {
        "description": "infinite two-part loop $ref",
        "schema": {
            "$ref": "#/definitions/a",
            "definitions": {
                "a": { "$ref": "#/definitions/b" },
                "b": { "$ref": "#/definitions/a" }
            }
        },
        "instance": {}
    },
    {
        "description": "unresolvable reference - pointer",
        "schema": { "$ref": "#/definitions/a" },
        "instance": {}
    },
    {
        "description": "unresolvable reference - anchor",
        "schema": { "$ref": "#foo" },
        "instance": {}
    }
]