def test_iter_eight_return_eleven():
expected = 47
actual = lucas_iter(8)
assert actual == expected
def test_iter_six_return_eighteen():
expected = 18
actual = lucas_iter(6)
assert actual == expected
def test_iter_seven_return_twentynine():
expected = 29
actual = lucas_iter(7)
assert actual == expected
def test_iter_five_return_eleven():
expected = 11
actual = lucas_iter(5)
assert actual == expected
def test_iter_four_return_seven():
expected = 7
actual = lucas_iter(4)
assert actual == expected
def test_iter_three_return_four():
expected = 4
actual = lucas_iter(3)
assert actual == expected
def test_iter_one_return_one():
expected = 1
actual = lucas_iter(1)
assert actual == expected
def test_iter_zero_return_two():
expected = 2
actual = lucas_iter(0)
assert actual == expected