Validation does not find missing data for nested schema

[vkuehn]

this code does not show any validation error

from referencing import Registry
from referencing.jsonschema import DRAFT7
from jsonschema import Draft7Validator

schema = {
    "$schema": "http://json-schema.org/draft-07/schema#",
    "$id": "test_schema_II.json",
    "type": "object",
    "definitions": {
        "step" : {
            "personal": {
                "type": "object",
                "properties": {
                    "name": {
                        "type": "string",
                        "description": "The name of the person"
                    },
                    "address": { "$ref": "../address/json_schema.json#/definitions/address" }
                },
                "required": ["name", "address"]
            }
        }
    }
}


base_resource = DRAFT7.create_resource(schema)
draft7_resources = [('/', base_resource)]
        
schema_address = {
    "$schema": "http://json-schema.org/draft-07/schema#",
    "$id": "json_schema.json",
    "definitions": {
        "address": {
            "type": "object",
            "properties": {
                "street": {
                    "type": "string"
                },
                "city": {
                    "type": "string"
                },
                "postalCode": {
                    "type": "string"
                }
            },
            "required": ["street", "city", "postalCode"]
        }
    }
}


draft7_resources.append(('./address/json_schema.json',DRAFT7.create_resource(schema_address)))

registry = Registry().with_resources(draft7_resources)
print("Registry created with resources.")
# no stats method for registry, but we can print and get number of uncrawled
print(registry)
validator = Draft7Validator(schema, registry=registry)

# valid and ok
data_good = {
    "HEADER": {
        "file_type": "test data",
        "file_version": 1
    },
    "definitions": {
        "step": {
            "personal": {
                "name": "Test Data",
                "address": {
                    "street": "123 Main St",
                    "city": "Anytown",
                    "postalCode": "12345"
                }
            }
        }
    }
}
result = validator.is_valid(data_good)
print(f"Validation result: for data good is {'valid' if result else 'not valid'}")

data_bad = {
    "HEADER": {
        "file_type": "test data",
        "file_version": 1
    },
    "definitions": {
        "step": {
            "personal": {
                "name": "Test Data",
                "address": {
                    "street": "123 Main St",
                }
            }
        }
    }
}

# !!!! should not be valid !!!
result_bad = validator.is_valid(data_bad)
print(f"Validation result: for data bad is {'valid' if result_bad else 'not valid'}")

# !!!! should have entries !!!
print("For data_bad validation errors:")
for error in validator.iter_errors(data_bad):
    print(f"- {error.message}")

for a less nested schema

{
    "$schema": "http://json-schema.org/draft-07/schema#",
    "$id": "json_schema.json",
    "type": "object",
    "properties": {
        "address": { "$ref": "../address/json_schema.json#/definitions/address" }
    },
    "required": ["address"]
}

it shows for this data

{
    "HEADER": {
        "file_type": "test data",
        "file_version": 1
    },
    "name": "Test Data",
    "address": {
        "street": "123 Main St"
    }

• 'city' is a required property
• 'postalCode' is a required property

and I would have expected the same result for the nested schema/data.
Is there an explanation why this does not happen ?