def test_yield_overlaps_2():
x1 = [1, 3, 5]
x2 = [1, 2, 4, 6]
assert len(list(MH._yield_overlaps(x1, x2))) == 1
assert len(list(MH._yield_overlaps(x2, x1))) == 1
def test_yield_overlaps_3():
x1 = [1, 3, 6]
x2 = [1, 2, 6]
assert len(list(MH._yield_overlaps(x1, x2))) == 2
assert len(list(MH._yield_overlaps(x2, x1))) == 2
def test_yield_overlaps():
x1 = [1, 3, 5]
x2 = [2, 4, 6]
assert len(list(MH._yield_overlaps(x1, x2))) == 0