[
    {
        "description": "Invalid use of fragments in location-independent $id",
        "schema": {
            "$schema": "https://json-schema.org/draft/2020-12/schema",
            "$ref": "https://json-schema.org/draft/2020-12/schema"
        },
        "tests": [
            {
                "description": "Identifier name",
                "data": {
                    "$ref": "#foo",
                    "$defs": {
                        "A": {
                            "$id": "#foo",
                            "type": "integer"
                        }
                    }
                },
                "valid": false
            },
            {
                "description": "Identifier name and no ref",
                "data": {
                    "$defs": {
                        "A": { "$id": "#foo" }
                    }
                },
                "valid": false
            },
            {
                "description": "Identifier path",
                "data": {
                    "$ref": "#/a/b",
                    "$defs": {
                        "A": {
                            "$id": "#/a/b",
                            "type": "integer"
                        }
                    }
                },
                "valid": false
            },
            {
                "description": "Identifier name with absolute URI",
                "data": {
                    "$ref": "http://localhost:1234/draft2020-12/bar#foo",
                    "$defs": {
                        "A": {
                            "$id": "http://localhost:1234/draft2020-12/bar#foo",
                            "type": "integer"
                        }
                    }
                },
                "valid": false
            },
            {
                "description": "Identifier path with absolute URI",
                "data": {
                    "$ref": "http://localhost:1234/draft2020-12/bar#/a/b",
                    "$defs": {
                        "A": {
                            "$id": "http://localhost:1234/draft2020-12/bar#/a/b",
                            "type": "integer"
                        }
                    }
                },
                "valid": false
            },
            {
                "description": "Identifier name with base URI change in subschema",
                "data": {
                    "$id": "http://localhost:1234/draft2020-12/root",
                    "$ref": "http://localhost:1234/draft2020-12/nested.json#foo",
                    "$defs": {
                        "A": {
                            "$id": "nested.json",
                            "$defs": {
                                "B": {
                                    "$id": "#foo",
                                    "type": "integer"
                                }
                            }
                        }
                    }
                },
                "valid": false
            },
            {
                "description": "Identifier path with base URI change in subschema",
                "data": {
                    "$id": "http://localhost:1234/draft2020-12/root",
                    "$ref": "http://localhost:1234/draft2020-12/nested.json#/a/b",
                    "$defs": {
                        "A": {
                            "$id": "nested.json",
                            "$defs": {
                                "B": {
                                    "$id": "#/a/b",
                                    "type": "integer"
                                }
                            }
                        }
                    }
                },
                "valid": false
            }
        ]
    },
    {
        "description": "Valid use of empty fragments in location-independent $id",
        "comment": "These are allowed but discouraged",
        "schema": {
            "$schema": "https://json-schema.org/draft/2020-12/schema",
            "$ref": "https://json-schema.org/draft/2020-12/schema"
        },
        "tests": [
            {
                "description": "Identifier name with absolute URI",
                "data": {
                    "$ref": "http://localhost:1234/draft2020-12/bar",
                    "$defs": {
                        "A": {
                            "$id": "http://localhost:1234/draft2020-12/bar#",
                            "type": "integer"
                        }
                    }
                },
                "valid": true
            },
            {
                "description": "Identifier name with base URI change in subschema",
                "data": {
                    "$id": "http://localhost:1234/draft2020-12/root",
                    "$ref": "http://localhost:1234/draft2020-12/nested.json#/$defs/B",
                    "$defs": {
                        "A": {
                            "$id": "nested.json",
                            "$defs": {
                                "B": {
                                    "$id": "#",
                                    "type": "integer"
                                }
                            }
                        }
                    }
                },
                "valid": true
            }
        ]
    },
    {
        "description": "Unnormalized $ids are allowed but discouraged",
        "schema": {
            "$schema": "https://json-schema.org/draft/2020-12/schema",
            "$ref": "https://json-schema.org/draft/2020-12/schema"
        },
        "tests": [
            {
                "description": "Unnormalized identifier",
                "data": {
                    "$ref": "http://localhost:1234/draft2020-12/foo/baz",
                    "$defs": {
                        "A": {
                            "$id": "http://localhost:1234/draft2020-12/foo/bar/../baz",
                            "type": "integer"
                        }
                    }
                },
                "valid": true
            },
            {
                "description": "Unnormalized identifier and no ref",
                "data": {
                    "$defs": {
                        "A": {
                            "$id": "http://localhost:1234/draft2020-12/foo/bar/../baz",
                            "type": "integer"
                        }
                    }
                },
                "valid": true
            },
            {
                "description": "Unnormalized identifier with empty fragment",
                "data": {
                    "$ref": "http://localhost:1234/draft2020-12/foo/baz",
                    "$defs": {
                        "A": {
                            "$id": "http://localhost:1234/draft2020-12/foo/bar/../baz#",
                            "type": "integer"
                        }
                    }
                },
                "valid": true
            },
            {
                "description": "Unnormalized identifier with empty fragment and no ref",
                "data": {
                    "$defs": {
                        "A": {
                            "$id": "http://localhost:1234/draft2020-12/foo/bar/../baz#",
                            "type": "integer"
                        }
                    }
                },
                "valid": true
            }
        ]
    },
    {
        "description": "$id inside an enum is not a real identifier",
        "comment": "the implementation must not be confused by an $id buried in the enum",
        "schema": {
            "$schema": "https://json-schema.org/draft/2020-12/schema",
            "$defs": {
                "id_in_enum": {
                    "enum": [
                        {
                          "$id": "https://localhost:1234/draft2020-12/id/my_identifier.json",
                          "type": "null"
                        }
                    ]
                },
                "real_id_in_schema": {
                    "$id": "https://localhost:1234/draft2020-12/id/my_identifier.json",
                    "type": "string"
                },
                "zzz_id_in_const": {
                    "const": {
                        "$id": "https://localhost:1234/draft2020-12/id/my_identifier.json",
                        "type": "null"
                    }
                }
            },
            "anyOf": [
                { "$ref": "#/$defs/id_in_enum" },
                { "$ref": "https://localhost:1234/draft2020-12/id/my_identifier.json" }
            ]
        },
        "tests": [
            {
                "description": "exact match to enum, and type matches",
                "data": {
                    "$id": "https://localhost:1234/draft2020-12/id/my_identifier.json",
                    "type": "null"
                },
                "valid": true
            },
            {
                "description": "match $ref to $id",
                "data": "a string to match #/$defs/id_in_enum",
                "valid": true
            },
            {
                "description": "no match on enum or $ref to $id",
                "data": 1,
                "valid": false
            }
        ]
    },
    {
        "description": "non-schema object containing an $id property",
        "schema": {
            "$schema": "https://json-schema.org/draft/2020-12/schema",
            "$defs": {
                "const_not_id": {
                    "const": {
                        "$id": "not_a_real_id"
                    }
                }
            },
            "if": {
                "const": "skip not_a_real_id"
            },
            "then": true,
            "else" : {
                "$ref": "#/$defs/const_not_id"
            }
        },
        "tests": [
            {
                "description": "skip traversing definition for a valid result",
                "data": "skip not_a_real_id",
                "valid": true
            },
            {
                "description": "const at const_not_id does not match",
                "data": 1,
                "valid": false
            }
        ]
    }
]