def METHOD_NAME(self):
    # First, make sure we can't do this
    bot = CandidateBot(self.person.pk)
    with self.assertRaises(ValueError):
        bot.edit_field("email", "INVALID")
    # Now, ignore errors and verify nothing changes, but no errors
    # are raised
    bot = CandidateBot(self.person.pk)
    bot.IGNORE_ERRORS = True
    bot.edit_field("email", "INVALID")
    person = bot.save("a source")
    self.assertEqual(person.get_email, None)