from jsonschema import validate
from jsonschema.exceptions import ValidationError

schema = {
    "type": "object",
    "properties": {
        "tuple_or_tuple_array": {
            "anyOf": [
                {
                    "type": "array",
                    "items": {
                        "$ref": "#/$defs/int_tuple",
                    },
                },
                {
                    "$ref": "#/$defs/int_tuple",
                },
            ]
        },
    },
    "$defs": {
        "int_tuple": {
            "type": "array",
            "items": {
                "type": "integer",
            },
            "minItems": 2,
            "maxItems": 2,
        },
    },
}


def try_validate(instance):
    try:
        validate(instance, schema)
    except ValidationError as e:
        print(str(e))
    else:
        print("No error.\n")
    finally:
        print("-" * 80)


# Case 1
control = {"tuple_or_tuple_array": [0, 0]}
try_validate(control)

# Case 2
control2 = {"tuple_or_tuple_array": [[0, 0], [0, 0]]}
try_validate(control2)

# Case 3
misleading_error = {"tuple_or_tuple_array": [0, "not an int"]}
try_validate(misleading_error)

# Case 4
expected_error = {"tuple_or_tuple_array": ["not an int", 0]}
try_validate(expected_error)