Failure to validate exclusiveMinimum for OpenAPI 3.0

[plondino]

The following code throws an error when validating:

from openapi_schema_validator import oas30_format_checker
from openapi_schema_validator import validate

# A sample schema
schema = {
    "type": "object",
    "required": [
        "duration"
    ],
    "properties": {
        "duration": {
            "type": "number",
            "exclusiveMinimum": True,
            "minimum": 0
        }
    },
    "additionalProperties": False,
}
validate({"duration": 10}, schema, format_checker=oas30_format_checker)

Failed validating 'type' in metaschema['allOf'][1]['properties']['properties']['additionalProperties']['$dynamicRef']['allOf'][3]['properties']['exclusiveMinimum']:
    {'type': 'number'}

On schema['properties']['duration']['exclusiveMinimum']:
    True

This is valid OpenAPI 3.0 syntax since it follows the Draft 5 JSON schema synatx:

https://swagger.io/specification/#schema-object
https://datatracker.ietf.org/doc/html/draft-wright-json-schema-validation-00#section-5.5

This would be an error in 3.0 if it was a number.

[plondino]

Disregard, I misread the use of format_checker and it works when using this syntax:

from openapi_schema_validator import OAS30Validator
validate(payload, schema, cls=OAS30Validator)