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- """
- Tests for the parts of jsonschema related to the :validator:`format` property.
- """
- from unittest import TestCase
- from jsonschema import FormatError, ValidationError, FormatChecker
- from jsonschema.validators import Draft4Validator
- BOOM = ValueError("Boom!")
- BANG = ZeroDivisionError("Bang!")
- def boom(thing):
- if thing == "bang":
- raise BANG
- raise BOOM
- class TestFormatChecker(TestCase):
- def test_it_can_validate_no_formats(self):
- checker = FormatChecker(formats=())
- self.assertFalse(checker.checkers)
- def test_it_raises_a_key_error_for_unknown_formats(self):
- with self.assertRaises(KeyError):
- FormatChecker(formats=["o noes"])
- def test_it_can_register_cls_checkers(self):
- original = dict(FormatChecker.checkers)
- self.addCleanup(FormatChecker.checkers.pop, "boom")
- FormatChecker.cls_checks("boom")(boom)
- self.assertEqual(
- FormatChecker.checkers,
- dict(original, boom=(boom, ())),
- )
- def test_it_can_register_checkers(self):
- checker = FormatChecker()
- checker.checks("boom")(boom)
- self.assertEqual(
- checker.checkers,
- dict(FormatChecker.checkers, boom=(boom, ()))
- )
- def test_it_catches_registered_errors(self):
- checker = FormatChecker()
- checker.checks("boom", raises=type(BOOM))(boom)
- with self.assertRaises(FormatError) as cm:
- checker.check(instance=12, format="boom")
- self.assertIs(cm.exception.cause, BOOM)
- self.assertIs(cm.exception.__cause__, BOOM)
- # Unregistered errors should not be caught
- with self.assertRaises(type(BANG)):
- checker.check(instance="bang", format="boom")
- def test_format_error_causes_become_validation_error_causes(self):
- checker = FormatChecker()
- checker.checks("boom", raises=ValueError)(boom)
- validator = Draft4Validator({"format": "boom"}, format_checker=checker)
- with self.assertRaises(ValidationError) as cm:
- validator.validate("BOOM")
- self.assertIs(cm.exception.cause, BOOM)
- self.assertIs(cm.exception.__cause__, BOOM)
- def test_format_checkers_come_with_defaults(self):
- # This is bad :/ but relied upon.
- # The docs for quite awhile recommended people do things like
- # validate(..., format_checker=FormatChecker())
- # We should change that, but we can't without deprecation...
- checker = FormatChecker()
- with self.assertRaises(FormatError):
- checker.check(instance="not-an-ipv4", format="ipv4")
- def test_repr(self):
- checker = FormatChecker(formats=())
- checker.checks("foo")(lambda thing: True)
- checker.checks("bar")(lambda thing: True)
- checker.checks("baz")(lambda thing: True)
- self.assertEqual(
- repr(checker),
- "<FormatChecker checkers=['bar', 'baz', 'foo']>",
- )
|
