public void Split()
        {
            var input = new StringValue("a.b.c");

            var arguments = new FilterArguments().Add(new StringValue("."));
            var context   = new TemplateContext();

            var result = StringFilters.Split(input, arguments, context);

            Assert.Equal(3, result.Enumerate().Count());
            Assert.Equal(new StringValue("a"), result.Enumerate().ElementAt(0));
            Assert.Equal(new StringValue("b"), result.Enumerate().ElementAt(1));
            Assert.Equal(new StringValue("c"), result.Enumerate().ElementAt(2));
        }