public void CopyToTests()
{
int[] starting = new int[3] { 1, 2, 3 };
Set<int> set = new Set<int>(starting);
Assert.AreEqual(3, set.Count, "Set should have three items in it.");
int[] ending = new int[set.Count];
set.CopyTo(ending, 0);
Assert.AreEqual(3, ending.Length, "Set should have three items in it.");
int i = 0;
foreach (int startInt in starting)
{
Assert.AreEqual(startInt, ending[i++], "Set should have same three items in it.");
}
}