'Trying to unsubscribe someone who already isn\'t subscribed to a stream
fails gracefully.'

def test_remove_already_not_subbed(self):

    result = self.attempt_unsubscribe_of_principal(is_admin=True, is_subbed=False, invite_only=False, other_user_subbed=False)
    json = self.assert_json_success(result)
    self.assertEqual(len(json['removed']), 0)
    self.assertEqual(len(json['not_subscribed']), 1)
