def test_getting_first_and_second_codon_positions_reading_frame_1(self):
     seq = 'GAATGGAAGACAAAGTCTCGTCCA'
     seq_record = SeqRecordExpanded(seq, reading_frame=1)
     expected = 'GATGAAACAATCCGCC'
     self.assertEqual(expected, seq_record.first_and_second_codon_positions())