public void TestDifference()
{
GenericSet <int> gs1 = new GenericSet <int>();
for (int i = 1; i <= 8; i++)
{
gs1.Add(i);
}
Console.WriteLine(gs1);
GenericSet <int> gs2 = new GenericSet <int>();
for (int i = 5; i <= 15; i++)
{
gs2.Add(i);
}
Console.WriteLine(gs2);
GenericSet <int> difference = gs1.Difference(gs2);
Assert.That(difference.Size, Is.EqualTo(4));
Assert.That(difference.Contains(15), Is.False);
Assert.That(difference.Contains(5), Is.False);
Assert.That(difference.Contains(1), Is.True);
Assert.That(difference.Contains(4), Is.True);
Console.WriteLine("Difference: {0}", difference);
}