public virtual void ProcessorStateTestPeek()
        {
            ProcessorState   testProcessorState = new ProcessorState();
            ISvgNodeRenderer renderer           = new DummySvgNodeRenderer("test");

            testProcessorState.Push(renderer);
            ISvgNodeRenderer viewed = testProcessorState.Top();

            NUnit.Framework.Assert.IsTrue(viewed.ToString().Equals("test") && !testProcessorState.Empty());
        }