Assert.assertFalse(llist.contain(i));
Assert.assertTrue(llist.contain(i + 1));
environment.worldPop();
Assert.assertFalse(llist.contain(i));
Assert.assertTrue(llist.contain(i + 1));
environment.worldPop();
Assert.assertTrue(llist.contain(i));
}
for (int i = 0; i < n; i++) {
Assert.assertTrue(llist.contain(i));
}