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from django.core.exceptions import ValidationError
from django.test import TestCase
class ValidationTestCase(TestCase):
def assertFailsValidation(self, clean, failed_fields, **kwargs):
with self.assertRaises(ValidationError) as cm:
clean(**kwargs)
self.assertEqual(sorted(failed_fields), sorted(cm.exception.message_dict))
def assertFieldFailsValidationWithMessage(self, clean, field_name, message):
with self.assertRaises(ValidationError) as cm:
clean()
self.assertIn(field_name, cm.exception.message_dict)
self.assertEqual(message, cm.exception.message_dict[field_name])
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