def test_releasing_keys_works(self):
vm = VM()
for key in range(0, 16):
vm.press(key)
for key in range(0, 16):
vm.release(key)
assert not vm.pressed(key)
def test_pressing_keys_sets_state(self):
vm = VM()
for key in range(0, 16):
vm.press(key)
assert vm.pressed(key)