def test_count_cigar_ops_6():
"""
Test a degenerate case.
"""
cigar = '12345'
expected = (0, 0, 0, 0) # num_m, num_i, num_d, total_len
with pytest.raises(Exception):
result = mod.count_cigar_ops(cigar)
def test_count_cigar_ops_2():
"""
Test simple match ops, only one CIGAR op.
"""
cigar = '10M'
expected = (10, 0, 0, 10) # num_m, num_i, num_d, total_len
result = mod.count_cigar_ops(cigar)
assert (result == expected)
def test_count_cigar_ops_3():
"""
Test a more complex CIGAR string.
"""
cigar = '10M1I123D4=2X'
expected = (16, 1, 123, 140) # num_m, num_i, num_d, total_len
result = mod.count_cigar_ops(cigar)
assert (result == expected)
def test_count_cigar_ops_1():
"""
Test empty input.
"""
cigar = ''
expected = (0, 0, 0, 0) # num_m, num_i, num_d, total_len
result = mod.count_cigar_ops(cigar)
assert (result == expected)