def test_set_value_by_callable():
rl = RangedList(size=10, value="a", key="alpha")
rl.set_value(lambda x: x * 2)
assert list(rl) == [0, 2, 4, 6, 8, 10, 12, 14, 16, 18]
rl.set_value_by_slice(4, 6, lambda x: x * 3)
assert list(rl) == [0, 2, 4, 6, 12, 15, 12, 14, 16, 18]
rl.set_value_by_ids([1, 8, 2], lambda x: x * 4)
assert list(rl) == [0, 4, 8, 6, 12, 15, 12, 14, 32, 18]
def test_bad_callable():
rl = RangedList(size=10, value="a", key="alpha")
with pytest.raises(TypeError):
rl.set_value(lambda: 2)
with pytest.raises(TypeError):
rl.set_value(lambda x, y: x * y)
with pytest.raises(TypeError):
rl.set_value(lambda x: len(x))
