def test_two_letters(transcript): res = transcript.utr3_motif_counts("AC") assert res == 64
def test_seven_letters(transcript): res = transcript.utr3_motif_counts("TGTAAAA") assert res == 0
def test_six_letters(transcript): res = transcript.utr3_motif_counts("CAGCTG") assert res == 2
def test_five_letters(transcript): res = transcript.utr3_motif_counts("GAGTT") assert res == 2
def test_four_letters(transcript): res = transcript.utr3_motif_counts("ACCA") assert res == 4
def test_three_letters(transcript): res = transcript.utr3_motif_counts("TTT") assert res == 14