Python marshmallow.fields.Function() Examples

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Example #1
Source File: test_dump.py    From marshmallow-jsonschema with MIT License 6 votes vote down vote up 
def test_function():
    """Function fields can be serialised if type is given."""

    class FnSchema(Schema):
        fn_str = fields.Function(
            lambda: "string", required=True, _jsonschema_type_mapping={"type": "string"}
        )
        fn_int = fields.Function(
            lambda: 123, required=True, _jsonschema_type_mapping={"type": "number"}
        )

    schema = FnSchema()

    dumped = validate_and_dump(schema)

    props = dumped["definitions"]["FnSchema"]["properties"]
    assert props["fn_int"]["type"] == "number"
    assert props["fn_str"]["type"] == "string"