def test_value_at():
l = SingleLinkedList()
for i in range(5):
l.push_back(i)
assert l.value_at(0) == 0
assert l.value_at(2) == 2
assert l.value_at(4) == 4
def test_value_at():
l = SingleLinkedList()
for i in range(5):
l.push_back(i)
assert l.value_at(0) == 0
assert l.value_at(2) == 2
assert l.value_at(4) == 4
