Some unit tests

using System;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using System.Collections.Generic;
using System.Linq;
using Wintellect.PowerCollections;
using CatalogOfFreeContent;
using System.Reflection;

namespace CatalogTests
{
    [TestClass]
    public class CatalogTests
    {
        [TestMethod]
        public void TestAddTitleWithSingleElement()
        {
            Catalog catalog = new Catalog();
            catalog.Add(new ContentItem(ContentItemType.Application, new string[] { "Firefox v.11.0", "Mozilla", "16148072", "http://www.mozilla.org" }));
            // Test Reflection
            FieldInfo title = typeof(Catalog).GetField("title", BindingFlags.NonPublic | BindingFlags.Instance);
            OrderedMultiDictionary<string, IContent> titleList = (OrderedMultiDictionary<string, IContent>)title.GetValue(catalog);

            Assert.AreEqual(titleList.Count, 1);
            Assert.IsTrue(titleList.ContainsKey("Firefox v.11.0"));
        }

        [TestMethod]
        public void TestAddUrlWithSingleElement()
        {
            Catalog catalog = new Catalog();
            catalog.Add(new ContentItem(ContentItemType.Application, new string[] { "Firefox v.11.0", "Mozilla", "16148072", "http://www.mozilla.org" }));

            FieldInfo url = typeof(Catalog).GetField("url", BindingFlags.NonPublic | BindingFlags.Instance);
            MultiDictionary<string, IContent> urlList = (MultiDictionary<string, IContent>)url.GetValue(catalog);

            Assert.AreEqual(urlList.Count, 1);
            Assert.IsTrue(urlList.ContainsKey("http://www.mozilla.org"));
        }

        [TestMethod]
        public void TestAddDublicateValue()
        {
            Catalog catalog = new Catalog();
            catalog.Add(new ContentItem(ContentItemType.Application, new string[] { "Firefox v.11.0", "Mozilla", "16148072", "http://www.mozilla.org" }));
            catalog.Add(new ContentItem(ContentItemType.Application, new string[] { "Firefox v.11.0", "Mozilla", "16148072", "http://www.mozilla.org" }));


            Assert.AreEqual(2, catalog.Count);
        }

        [TestMethod]
        public void TestAddMultipalItems()
        {
            Catalog catalog = new Catalog();
            catalog.Add(new ContentItem(ContentItemType.Book, new string[] { "intro Firefox", "Pesho", "16148072", "http://www.firefox.com" }));
            catalog.Add(new ContentItem(ContentItemType.Book, new string[] { "intro Firefox", "Pesho", "16148072", "http://www.firefox.com" }));
            catalog.Add(new ContentItem(ContentItemType.Book, new string[] { "intro Firefox", "Pesho", "16148072", "http://www.firefox.com" }));
            catalog.Add(new ContentItem(ContentItemType.Application, new string[] { "Firefox v.11.0", "Mozilla", "314834072", "http://www.mozilla.org" }));
            catalog.Add(new ContentItem(ContentItemType.Movie, new string[] { "Firefox movie", "btv", "261472", "http://www.btv.org" }));

            Assert.AreEqual(5, catalog.Count);
        }

        [TestMethod]
        public void TestGetListContentWithMatchesLessThanCount()
        {
            Catalog catalog = new Catalog();
            catalog.Add(new ContentItem(ContentItemType.Book, new string[] { "intro Firefox", "Pesho", "16148072", "http://www.firefox.com" }));
            catalog.Add(new ContentItem(ContentItemType.Book, new string[] { "intro Firefox", "Pesho", "16148072", "http://www.firefox.com" }));
            catalog.Add(new ContentItem(ContentItemType.Application, new string[] { "Firefox v.11.0", "Mozilla", "314834072", "http://www.mozilla.org" }));
            catalog.Add(new ContentItem(ContentItemType.Movie, new string[] { "Firefox movie", "btv", "261472", "http://www.btv.org" }));

            IEnumerable<IContent> actual = catalog.GetListContent("intro Firefox", 5);

            Assert.AreEqual(actual.Count(), 2);
        }

        [TestMethod]
        public void TestGetListContentWhetherReturnsLimitedMatches()
        {
            Catalog catalog = new Catalog();
            catalog.Add(new ContentItem(ContentItemType.Book, new string[] { "intro Firefox", "Pesho", "2148072", "http://www.firefox.com" }));
            catalog.Add(new ContentItem(ContentItemType.Book, new string[] { "intro Firefox", "Pesho2", "161480722", "http://www.firefox.com" }));
            catalog.Add(new ContentItem(ContentItemType.Book, new string[] { "intro Firefox", "Pesho3", "16148072111", "http://www.firefox.com" }));
            catalog.Add(new ContentItem(ContentItemType.Application, new string[] { "Firefox v.11.0", "Mozilla", "314834072", "http://www.mozilla.org" }));
            catalog.Add(new ContentItem(ContentItemType.Movie, new string[] { "Firefox movie", "btv", "261472", "http://www.btv.org" }));

            IEnumerable<IContent> actual = catalog.GetListContent("intro Firefox", 2);

            Assert.AreEqual(actual.Count(), 2);
        }

        [TestMethod]
        public void TestGetListContentWithSingleMatch()
        {
            Catalog catalog = new Catalog();
            catalog.Add(new ContentItem(ContentItemType.Book, new string[] { "intro Firefox", "Pesho", "16148072", "http://www.firefox.com" }));
            catalog.Add(new ContentItem(ContentItemType.Application, new string[] { "Firefox v.11.0", "Mozilla", "314834072", "http://www.mozilla.org" }));
            catalog.Add(new ContentItem(ContentItemType.Movie, new string[] { "Firefox movie", "btv", "261472", "http://www.btv.org" }));

            IEnumerable<IContent> actual = catalog.GetListContent("intro Firefox", 10);

            Assert.AreEqual(actual.Count(), 1);
        }

        [TestMethod]
        public void TestGetListContentWithNoMatches()
        {
            Catalog catalog = new Catalog();
            catalog.Add(new ContentItem(ContentItemType.Book, new string[] { "intro Firefox", "Pesho", "16148072", "http://www.firefox.com" }));
            catalog.Add(new ContentItem(ContentItemType.Application, new string[] { "Firefox v.11.0", "Mozilla", "314834072", "http://www.mozilla.org" }));
            catalog.Add(new ContentItem(ContentItemType.Movie, new string[] { "Firefox movie", "btv", "261472", "http://www.btv.org" }));
            catalog.Add(new ContentItem(ContentItemType.Application, new string[] { "Firefox v.11.0", "Mozilla", "314834072", "http://www.mozilla.org" }));
            catalog.Add(new ContentItem(ContentItemType.Movie, new string[] { "Firefox movie", "btv", "261472", "http://www.btv.org" }));

            IEnumerable<IContent> actual = catalog.GetListContent("No match element", 10);

            Assert.AreEqual(actual.Count(), 0);
        }

        [TestMethod]
        public void TestGetListContentSorting()
        {
            Catalog catalog = new Catalog();
            catalog.Add(new ContentItem(ContentItemType.Movie, new string[] { "Intro Firefox", "Pesho", "16148072", "http://www.firefox.com" }));
            catalog.Add(new ContentItem(ContentItemType.Application, new string[] { "Firefox v.11.0", "Mozilla", "314834072", "http://www.mozilla.org" }));
            catalog.Add(new ContentItem(ContentItemType.Movie, new string[] { "Intro Firefox", "Gosho", "261472", "http://www.btv.org" }));
            catalog.Add(new ContentItem(ContentItemType.Application, new string[] { "Firefox v.11.0", "Mozilla", "314834072", "http://www.mozilla.org" }));
            catalog.Add(new ContentItem(ContentItemType.Movie, new string[] { "Intro Firefox", "Ani", "261472", "http://www.btv.org" }));

            IEnumerable<IContent> actual = catalog.GetListContent("Intro Firefox", 10);
            string[] actualTextRepresentation = new string[actual.Count()];
            int index = 0;
            foreach (var item in actual)
            {
                actualTextRepresentation[index] = item.TextRepresentation;
                index++;
            }
            // Ordered by Movie than ordered by Name -> Ani, Gosho, Pesho
            string[] expected = new string[] {
                                                "Movie: Intro Firefox; Ani; 261472; http://www.btv.org",
                                                "Movie: Intro Firefox; Gosho; 261472; http://www.btv.org",
                                                "Movie: Intro Firefox; Pesho; 16148072; http://www.firefox.com"
                                             };

            CollectionAssert.AreEqual(actualTextRepresentation, expected);
        }

        [TestMethod]
        public void TestUpdateContentWithOneMatch()
        {
            Catalog catalog = new Catalog();
            catalog.Add(new ContentItem(ContentItemType.Book, new string[] { "intro Firefox", "Pesho", "16148072", "http://www.firefox.com" }));
            catalog.Add(new ContentItem(ContentItemType.Application, new string[] { "Firefox v.11.0", "Mozilla", "314834072", "http://www.mozilla.org" }));
            catalog.Add(new ContentItem(ContentItemType.Movie, new string[] { "Firefox movie", "btv", "261472", "http://www.btv.org" }));

            catalog.UpdateContent("http://www.firefox.com", "www.yahoo.com");

            FieldInfo url = typeof(Catalog).GetField("url", BindingFlags.NonPublic | BindingFlags.Instance);
            MultiDictionary<string, IContent> urlList = (MultiDictionary<string, IContent>)url.GetValue(catalog);

            Assert.IsTrue(urlList.ContainsKey("www.yahoo.com"));
        }

        [TestMethod]
        public void TestUpdateContentNoMatch()
        {
            Catalog catalog = new Catalog();
            catalog.Add(new ContentItem(ContentItemType.Book, new string[] { "intro Firefox", "Pesho", "16148072", "http://www.firefox.com" }));
            catalog.Add(new ContentItem(ContentItemType.Application, new string[] { "Firefox v.11.0", "Mozilla", "314834072", "http://www.mozilla.org" }));
            catalog.Add(new ContentItem(ContentItemType.Movie, new string[] { "Firefox movie", "btv", "261472", "http://www.btv.org" }));

            catalog.UpdateContent("invalid.url.com", "www.yahoo.com");

            FieldInfo url = typeof(Catalog).GetField("url", BindingFlags.NonPublic | BindingFlags.Instance);
            MultiDictionary<string, IContent> urlList = (MultiDictionary<string, IContent>)url.GetValue(catalog);

            Assert.IsFalse(urlList.ContainsKey("www.yahoo.com"));
        }

        [TestMethod]
        public void TestUpdateContentMultipleUpdates()
        {
            Catalog catalog = new Catalog();
            catalog.Add(new ContentItem(ContentItemType.Book, new string[] { "intro Firefox", "Pesho", "16148072", "http://www.firefox.com" }));
            catalog.Add(new ContentItem(ContentItemType.Application, new string[] { "Firefox v.11.0", "Mozilla", "314834072", "http://www.mozilla.org" }));
            catalog.Add(new ContentItem(ContentItemType.Movie, new string[] { "Firefox movie", "btv", "261472", "http://www.btv.org" }));

            catalog.UpdateContent("http://www.firefox.com", "www.yahoo.com");

            FieldInfo url = typeof(Catalog).GetField("url", BindingFlags.NonPublic | BindingFlags.Instance);
            MultiDictionary<string, IContent> urlList = (MultiDictionary<string, IContent>)url.GetValue(catalog);

            Assert.IsTrue(urlList.ContainsKey("www.yahoo.com"));

            catalog.UpdateContent("www.yahoo.com", "http://www.firefox.com");

            url = typeof(Catalog).GetField("url", BindingFlags.NonPublic | BindingFlags.Instance);
            urlList = (MultiDictionary<string, IContent>)url.GetValue(catalog);

            Assert.IsTrue(urlList.ContainsKey("http://www.firefox.com"));
        }
    }
}