public void HasTemplate()
        {
            var first = new InMemoryViewFolder {
                { "one.txt", "one" }
            };
            var second = new InMemoryViewFolder {
                { "two.txt", "two" }
            };
            var viewFolder = new CombinedViewFolder(first, second);

            Assert.IsTrue(viewFolder.HasView("one.txt"));
            Assert.IsTrue(viewFolder.HasView("two.txt"));
            Assert.IsFalse(viewFolder.HasView("three.txt"));
        }