def test_fasta_content_iterator():
'it test fasta_content_iterator'
fhand = open(os.path.join(TEST_DATA_DIR, 'seq.fasta'))
fastas = list(fasta_contents_in_file(fhand))
assert fastas[0][0] == 'seq1'
assert fastas[1][1] == 'polya'
assert 'TAGTCTATGATGCATCAGATGCATGA' in fastas[2][2]