def test_custom_range_str__start():
assert ["a", "b", "c", "d", "e",
"f"] == custom_range(string.ascii_lowercase, "g")
def test_custom_range_if_none_is_stop():
data = [1, 2, 3, None, 4, 5]
assert [1, 2, 3] == custom_range(data, 1, None)
def test_custom_range_str_start__stop__step():
assert ["p", "n", "l", "j", "h"] == custom_range(string.ascii_lowercase,
"p", "g", -2)
def test_custom_range_not_str():
assert [1] == custom_range([2, 1, 0], 1, 0)
def test_custom_range_str__start__stop():
assert ["g", "h", "i", "j", "k", "l", "m", "n",
"o"] == custom_range(string.ascii_lowercase, "g", "p")