Filename: //lib//python3/dist-packages//jsonschema//tests//test_format.py

""" 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']>", )

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