public void TestWhere()
{
WList <int> one = new WList <int>(); one.Add(3);
WList <int> two = one.Clone(); two.Add(2);
WList <int> thr = two.Clone(); thr.Add(1);
ExpectList(one.Where(delegate(int i) { return(false); }));
ExpectList(two.Where(delegate(int i) { return(false); }));
ExpectList(thr.Where(delegate(int i) { return(false); }));
Assert.That(one.Where(delegate(int i) { return(true); }).ToVList() == one.ToVList());
Assert.That(two.Where(delegate(int i) { return(true); }).ToVList() == two.ToVList());
Assert.That(thr.Where(delegate(int i) { return(true); }).ToVList() == thr.ToVList());
Assert.That(two.Where(delegate(int i) { return(i == 3); }).ToVList() == two.WithoutLast(1));
Assert.That(thr.Where(delegate(int i) { return(i == 3); }).ToVList() == thr.WithoutLast(2));
Assert.That(thr.Where(delegate(int i) { return(i > 1); }).ToVList() == thr.WithoutLast(1));
ExpectList(two.Where(delegate(int i) { return(i == 2); }), 2);
ExpectList(thr.Where(delegate(int i) { return(i == 2); }), 2);
}