public void PersistentListTests()
{
IPersistentList <int> target = new PersistentList <int>();
target = target.Cons(1);
target = target.Cons(5);
target = target.Cons(10);
Assert.AreEqual(3, target.Count);
Assert.AreEqual(10, target.Peek());
target = target.Pop();
Assert.AreEqual(2, target.Count);
Assert.AreEqual(5, target.Peek());
var init = new List <int> {
5, 1
};
IPersistentList <int> target2 = new PersistentList <int>(init);
Assert.AreEqual(target, target2);
Assert.AreEqual(target, target2);
Assert.AreEqual(target.GetHashCode(), target2.GetHashCode());
Assert.AreNotSame(target, target2);
target = target.Without(1);
Assert.AreEqual(1, target.Count);
Assert.AreEqual(5, target.Peek());
target = target.Empty();
Assert.AreEqual(0, target.Count);
}