def test_empty_file(self):
        cmd = (fq_pgm, self.empty_fqfn, self.out_fqfn ) % "%s %s -o %s -r 999 "
        r   = envoy.run(cmd)
        out_recs  = []
        for rec in fileinput.input(self.out_fqfn):
            out_recs.append(rec)
        fileinput.close()
        assert len(out_recs) == 0
dataset/ETHPy150Open kenfar/DataGristle/scripts/tests/test_gristle_viewer_cmd.py/TestCommandLine.test_empty_file/swapped operands of `%`