public void Factor()
        {
            WebFactor factor;

            factor = null;
            GetFactorTreeNode(true).Factor = factor;
            Assert.IsNull(GetFactorTreeNode().Factor);

            factor = FactorManagerTest.GetForestFactor(GetContext());
            GetFactorTreeNode().Factor = factor;
            Assert.IsNotNull(GetFactorTreeNode().Factor);
            Assert.AreEqual(GetFactorTreeNode().Factor, factor);
        }