def METHOD_NAME(self):
    """Test an input file in an invalid format."""
    input_file = "Medline/pubmed_result1.txt"
    self.assertTrue(os.path.isfile(input_file))
    cline = MSAProbsCommandline(msaprobs_exe, infile=input_file)
    try:
        stdout, stderr = cline()
    except ApplicationError as err:
        self.assertEqual(err.returncode, 1)
    else:
        self.fail(f"Should have failed, returned:\n{stdout}\n{stderr}")