public void TestContent()
{
var lst1 = Lst.Create(1, 2, 3, 4, 5, 6);
var odds = lst1.Filter(x => x % 2 == 0);
Assert.AreEqual(6, lst1.Count());
Assert.AreEqual(21, lst1.Aggregate(0, (sum, x) => sum + x));
Assert.AreEqual(12, odds.Sum());
}
public void TestFolds()
{
var lst = Lst.Create(1, 2, 3, 4, 5, 6);
// (((((0 - 1) - 2) - 3) - 4) - 5) - 6
Assert.AreEqual(-21, lst.FoldL(0, (seed, e) => seed - e));
// (((((0 - 6) - 5) - 4) - 3) - 2) - 1
Assert.AreEqual(-21, lst.FoldR(0, (seed, e) => seed - e));
// 6 - (5 - (4 - (3 - (2 - (1 - 0)))))
Assert.AreEqual(3, lst.FoldL(0, (seed, e) => e - seed));
// 1 - (2 - (3 - (4 - (5 - (6 - 0)))))
Assert.AreEqual(-3, lst.FoldR(0, (seed, e) => e - seed));
}
public void TestEquality()
{
var l0 = Lst.Create(1, 2, 3, 4, 5, 6);
var l1 = Lst.Create(1, 2, 3, 4, 5, 6);
var l2 = Lst.Create(1, 2, 3, 4, 5, 7);
var l3 = Lst.Create(1, 2, 3, 4, 5);
var l4 = Lst.Create(5, 4, 3, 2, 1);
Assert.IsTrue(l0.IsEqual(l1));
Assert.IsFalse(l0.IsEqual(l2));
Assert.IsFalse(l0.IsEqual(l3));
Assert.IsFalse(l0.IsEqual(l4));
Assert.IsFalse(l3.IsEqual(l4));
// And if all elements are considered equal... - only length should matter now.
Assert.IsTrue(l0.IsEqual(l1, (x, y) => true));
Assert.IsTrue(l0.IsEqual(l2, (x, y) => true));
Assert.IsFalse(l0.IsEqual(l3, (x, y) => true));
Assert.IsFalse(l0.IsEqual(l4, (x, y) => true));
Assert.IsTrue(l3.IsEqual(l4, (x, y) => true));
}