def test_shift(): colors = SingleLinkedList() colors.shift("Cadmium Orange") assert colors.count() == 1 colors.shift("Carbazole Violet") assert colors.count() == 2 assert colors.pop() == "Cadmium Orange" assert colors.count() == 1 assert colors.pop() == "Carbazole Violet" assert colors.count() == 0
def test_push(): colors = SingleLinkedList() colors.push("Pthalo Blue") assert colors.count() == 1 colors.push("Ultramarine Blue") assert colors.count() == 2