public void DecoratorAppendNoException()
        {
            var node = new TestNode();

            Assert.That(() => node.AppendDecorator(new ConditionFail()), Throws.Nothing);
        }
        public void DecoratorAppendNullThrowsException()
        {
            var node = new TestNode();

            Assert.That(() => node.AppendDecorator(null), Throws.ArgumentNullException);
        }