def test_longest_id(self): """longest_id should return id associated with longest seq""" ids = \ "R27DLI_4812 R27DLI_600 R27DLI_727 U1PLI_403 U1PLI_8969".split() seqs = dict(MinimalFastaParser(dna_seqs.splitlines(), label_to_name=label_to_name)) self.assertEqual(longest_id(ids, seqs), 'U1PLI_403')