def METHOD_NAME(self):
    """Test a fasta input file containing only one sequence."""
    record = list(SeqIO.parse("Registry/seqs.fasta", "fasta"))[0]
    input_file = "seq.fasta"
    with open(input_file, "w") as handle:
        SeqIO.write(record, handle, "fasta")
    cline = XXmotifCommandline(outdir=self.out_dir, seqfile=input_file)
    self.add_file_to_clean(input_file)
    self.standard_test_procedure(cline)