def METHOD_NAME(self):
    # Make sure we have no DuplicateSuggestion
    self.assertFalse(DuplicateSuggestion.objects.all().exists())
    # Make some people
    p1, p2, p3 = PersonFactory.create_batch(3)
    # We're going to merge p1 in to p2
    # but someone things p3 is a dupe of p2
    ds = DuplicateSuggestion.objects.create(
        person=p2, other_person=p3, user=self.user
    )
    self.assertEqual(DuplicateSuggestion.objects.first().person, p2)
    self.assertEqual(DuplicateSuggestion.objects.first().other_person, p3)
    # Pretend we've merged p2 in to p1
    # Then call the merge helper
    merge_helpers.alter_duplicate_suggestion_post_merge(
        source_person=p2, dest_person=p1
    )
    # Check that the DS is now between p1 and p3
    self.assertEqual(DuplicateSuggestion.objects.all().count(), 1)
    ds = DuplicateSuggestion.objects.first()
    self.assertEqual(ds.person, p1)
    self.assertEqual(ds.other_person, p3)