public void TestIntersect()
{
TSet <Frac> tset1 = new TSet <Frac>();
tset1.Add(new Frac(1, 2));
tset1.Add(new Frac(2, 3));
tset1.Add(new Frac(3, 4));
TSet <Frac> tset2 = new TSet <Frac>();
tset2.Add(new Frac(1, 2));
tset2.Add(new Frac(2, 3));
tset2.Add(new Frac(5, 5));
Assert.AreEqual(tset1.Intersect(tset2).Show(), "1/2 2/3 ");
}
