public void Memoize()
{
var a = new Literal("a");
var dot = new Repetition(a, 1, 1);
var dot2 = dot.Memoize() as Repetition;
Assert.IsNotNull(dot2);
Assert.IsTrue(dot2.Memoized);
Assert.AreEqual("", dot2.Name);
var dot3 = dot2.Memoize();
Assert.AreEqual(dot2, dot3);
var dot4 = dot2.Memoize("Test") as Repetition;
Assert.IsNotNull(dot4);
Assert.IsTrue(dot4.Memoized);
Assert.AreEqual("Test", dot4.Name);
}