def test_map_sequence_subsequence():
source_seq = 'ACTGATGC'
dest_seq = 'TGAT'
expected_positions = [3, 4, 5, 6]
positions = map_sequence(source_seq, dest_seq)
assert expected_positions == positions
def test_map_sequence_insertion():
source_seq = 'ACTGATGC'
dest_seq = 'ACTGCATGC'
expected_positions = [1, 2, 3, 4, None, 5, 6, 7, 8]
positions = map_sequence(source_seq, dest_seq)
assert expected_positions == positions
def test_map_sequence_low_quality():
source_seq = 'AGAGCGAACCGATTC'
dest_seq = 'NNNNNNNNNNNATTC'
expected_positions = 11 * [None] + [12, 13, 14, 15]
positions = map_sequence(source_seq, dest_seq)
assert expected_positions == positions
def test_map_sequence_identical():
source_seq = 'ACTG'
dest_seq = 'ACTG'
expected_positions = [1, 2, 3, 4]
positions = map_sequence(source_seq, dest_seq)
assert expected_positions == positions