def METHOD_NAME(self):
    # get the taxlot state that was merged to test the history method
    taxlot_state = TaxLotState.objects.filter(
        jurisdiction_tax_lot_id='1552813',
        data_state__in=[DATA_STATE_MATCHING],
        merge_state__in=[MERGE_STATE_MERGED]
    ).first()
    self.assertIsNotNone(taxlot_state)
    history, master = taxlot_state.history()
    self.assertEqual(master['state_id'], taxlot_state.id)
    self.assertEqual(len(history), 2)
    self.assertEqual(history[0]['filename'], 'example-data-taxlots.xlsx')
    self.assertEqual(history[1]['filename'], 'example-data-properties.xlsx')