def METHOD_NAME(self):
    fields_iter = self._dummy_fields_iter(
        stashes=[11, 11, 15, 11], lbprocs=[31, 42, 31, 42]
    )
    result = self._group_result(fields_iter)
    self.assertEqual(
        result, self._test_fields([(1001,), (1002, 1004), (1003,)])
    )