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