def METHOD_NAME(self):
    os.system(f'python -m pyserini.fusion --method rrf --runs ' +
              f'{self.tmp}/anserini.covid-r3.abstract.qq.bm25.txt ' +
              f'{self.tmp}/anserini.covid-r3.full-text.qq.bm25.txt ' +
              f'{self.tmp}/anserini.covid-r3.paragraph.qq.bm25.txt ' +
              f' --output {self.tmp}/anserini.covid-r3.fusion1.txt ' +
              f'--runtag reciprocal_rank_fusion_k=60 --k 100000')
    with open(f'{self.tmp}/anserini.covid-r3.fusion1.txt', 'rb') as f:
        md5 = hashlib.md5(f.read()).hexdigest()
    self.assertEqual('61cbd73c6e60ba44f18ce967b5b0e5b3', md5)
    os.system(f'python -m pyserini.fusion --method rrf --runs ' +
              f'{self.tmp}/anserini.covid-r3.abstract.qdel.bm25.txt ' +
              f'{self.tmp}/anserini.covid-r3.full-text.qdel.bm25.txt ' +
              f'{self.tmp}/anserini.covid-r3.paragraph.qdel.bm25.txt ' +
              f' --output {self.tmp}/anserini.covid-r3.fusion2.txt ' +
              f'--runtag reciprocal_rank_fusion_k=60 --k 100000')
    with open(f'{self.tmp}/anserini.covid-r3.fusion2.txt', 'rb') as f:
        md5 = hashlib.md5(f.read()).hexdigest()
    self.assertEqual('d7eabf3dab840104c88de925e918fdab', md5)