public void Test()
{
var collection = new TestCollection <int>();
collection.Add(1);
collection.Add(2);
collection.Add(3);
int[] target = new int[5];
collection.CopyTo(target, 1);
Assert.AreEqual(0, target[0]);
Assert.AreEqual(1, target[1]);
Assert.AreEqual(3, target[3]);
Assert.AreEqual(0, target[4]);
}