public void ShouldIntersect()
{
var set1 = new StringSet();
var set2 = new StringSet();
set1.Add("Test1");
set1.Add("Common1");
set1.Add("Common2");
set2.Add("Common1");
set2.Add("Common2");
set2.Add("Test2");
StringSet intersect = set1.Intersect(set2);
Assert.AreEqual(2, intersect.Count);
Assert.IsTrue(intersect.Contains("Common1"));
Assert.IsTrue(intersect.Contains("Common2"));
}