def enum_from_json_schema(data: dict, definitions: SchemaDefinitions) -> Field:
choices = [(item, item) for item in data["enum"]]
kwargs = {"choices": choices, "default": data.get("default", NO_DEFAULT)}
return Choice(**kwargs)
def test_choice():
validator = Choice(choices=[("R", "red"), ("B", "blue"), ("G", "green")])
value, error = validator.validate_or_error(None)
assert error == ValidationError(text="May not be null.", code="null")
validator = Choice(choices=[("R", "red"), ("B", "blue"), ("G", "green")],
allow_null=True)
value, error = validator.validate_or_error(None)
assert value is None
assert error is None
validator = Choice(choices=[("R", "red"), ("B", "blue"), ("G", "green")],
allow_null=True)
value, error = validator.validate_or_error("")
assert value is None
assert error is None
validator = Choice(choices=[("R", "red"), ("B", "blue"), ("G", "green")])
value, error = validator.validate_or_error("Z")
assert error == ValidationError(text="Not a valid choice.", code="choice")
validator = Choice(choices=[("R", "red"), ("B", "blue"), ("G", "green")])
value, error = validator.validate_or_error("R")
assert value == "R"
validator = Choice(
choices=[("", "empty"), ("R", "red"), ("B", "blue"), ("G", "green")],
allow_null=True,
)
value, error = validator.validate_or_error("")
assert value == ""
validator = Choice(
choices=[("", "empty"), ("R", "red"), ("B", "blue"), ("G", "green")],
allow_null=True,
)
value, error = validator.validate_or_error(None)
assert value is None