@run_with_all_backends
    def test_repeater_failed_sends(self):
        def now():
            return datetime.utcnow()

        repeat_records = RepeatRecord.all(domain=self.domain, due_before=now())
        self.assertEqual(len(repeat_records), 2)

        for repeat_record in repeat_records:
            with patch(
                    'corehq.apps.repeaters.models.simple_post_with_cached_timeout',
                    return_value=MockResponse(status_code=404, reason='Not Found')) as mock_post:
                repeat_record.fire()
                self.assertEqual(mock_post.call_count, 3)
            repeat_record.save()

        next_check_time = now() + timedelta(minutes=60)

        repeat_records = RepeatRecord.all(
            domain=self.domain,
            due_before=now() + timedelta(minutes=15),
        )
        self.assertEqual(len(repeat_records), 0)

        repeat_records = RepeatRecord.all(
            domain=self.domain,
            due_before=next_check_time,
        )
        self.assertEqual(len(repeat_records), 2)
This tests records that fail to send three times
dataset/ETHPy150Open dimagi/commcare-hq/corehq/apps/repeaters/tests/test_repeater.py/RepeaterTest.test_repeater_failed_sends