unexpected instance type?

[Mercury-Fred]

Hi all,

I am attempting to use this package for json schema validation. I've tried my schema and json file on a web page for testing such things, (e.g. https://www.jsonschemavalidator.net/) and it all works fine. However, when I attempt to use this package, I get "unexpected instance type". My json file looks like the following:

{
"property1" :
[
{
"item1" : -1
}
]
}

The error message includes the entire json file as the "instance" and the instance value being generated internally by the package is the number 3. Note that I also get the "unexpected instance type" with an empty json file... e.g. "{}" - Then I get ERROR: '' - '"{\n}': unexpected instance type

Any suggestions? Thanks

[pboettch]

It seems that you are not parsing your JSON-string correctly. Have you verified that your JSON-instance is correctly parsed?

[Mercury-Fred]

Thanks - yes, that was the problem. I am now having trouble getting "unevaluatedProperties" to work as designed. If I paste an example into other validators, e.g. https://www.jsonschemavalidator.net/, the results are as I would expect (e.g. an extra property is detected and raises an error), however, when using this package, everything succeeds. Does the latest release support unevaluatedProperties? (I need this capability as I am using references to incorporate common properties into various derived objects. Thanks so much for your help.

[Mercury-Fred]

Here is an example schema that doesn't seem to catch additional properties (but does in the website identified above:

{
    "$schema": "http://json-schema.org/draft-2019-09/schema#",
    "type": "object",
    "$defs": {
        "groupsType" :  {
                            "type": "array",
                            "items": {
                                "type": "integer",
                                "minimum": 0,
                                "exclusiveMaximum" : 255,
                                "uniqueItems": true
                            }
                        },
        "groupsDef" : {
            "properties": {
                            "groups": {"$ref": "#/$defs/groupsType"},
                            "group" : {"type" : "integer",
                                    "minimum" : 0}
                        },
            "oneOf": [
                {"allOf": [
                    { "not": {"required":["groups"]}},
                    { "not": {"required":["group"]}}
                    ]
                },
                {"required":["groups"]},
                {"required":["group"]}
            ]
        }
    },
    "properties": {
        "xyz" : {
            "type" : "array",
            "items" : {
                "type": "object",
                "allOf": [{ "$ref": "#/$defs/groupsDef" }],
                "properties": { "stddev": {"type": "number" }},
                "required": [
                    "stddev"
                ],
                "unevaluatedProperties" : false
            }
        }
    },
    "unevaluatedProperties" : false
}

******** Test Json file below *********
{
"xyz" : [
{
"stddev": 2.4,
"groups": [8, 9],
"junk": "fred"
},
{
"stddev": 321,
}
],
"fred" : { "type" : "integer"}
}

[pboettch]

Only draft-7 is supported with this library. PRs are welcome.