public void Tag_extracted()
        {
            var(title, tags) = BookmarkFilter.Tokenize(" #test");

            Assert.IsTrue(tags.Contains("test"));
            CollectionAssert.IsEmpty(title);
        }
        public void Mixed()
        {
            var(title, tags) = BookmarkFilter.Tokenize(" #test token");

            Assert.IsTrue(tags.Contains("test"));
            Assert.IsTrue(title.Contains("token"));

            Assert.AreEqual(1, title.Length);
            Assert.AreEqual(1, tags.Length);
        }