def METHOD_NAME(self):
    object_pks = [self.case_2.pk, self.case_3.pk]
    comments = add_comment(self.tester, "testcases.testcase", object_pks, "comment abc")
    self.assertEqual("comment abc", comments[0].comment)
    self.assertEqual("comment abc", comments[1].comment)
    for pk in object_pks:
        self.assertTrue(Comment.objects.filter(object_pk=pk, comment="comment abc").exists())