def METHOD_NAME(self):
    input_path = os.path.join(self.root, 'tests/resources/simple_trec_run_msmarco_doc1.txt')
    run = TrecRun(filepath=input_path)
    self.assertEqual(run.topics(), {320792, 174249, 1090270, 1101279})
    for topic in run.topics():
        self.assertEqual(len(run.get_docs_by_topic(topic)), 5)