add extra multi-episode unit test

MediaBrowser.Model/Querying/ItemSortBy.cs

@@ -71,5 +71,7 @@ namespace MediaBrowser.Model.Querying
         /// </summary>
         public const string CriticRating = "CriticRating";
         public const string IsFolder = "IsFolder";
+        public const string IsUnplayed = "IsUnplayed";
+        public const string IsPlayed = "IsPlayed";
     }
 }

MediaBrowser.Tests/Resolvers/TvUtilTests.cs

@@ -56,6 +56,8 @@ namespace MediaBrowser.Tests.Resolvers
         [TestMethod]
         public void TestGetEndingEpisodeNumberFromFile()
         {
+            Assert.AreEqual(null, TVUtils.GetEndingEpisodeNumberFromFile(@"Season 1\4x01 – 20 Hours in America (1).mkv"));
+            
             Assert.AreEqual(null, TVUtils.GetEndingEpisodeNumberFromFile(@"Season 1\01x02 blah.avi"));
             Assert.AreEqual(null, TVUtils.GetEndingEpisodeNumberFromFile(@"Season 1\S01x02 blah.avi"));
             Assert.AreEqual(null, TVUtils.GetEndingEpisodeNumberFromFile(@"Season 1\S01E02 blah.avi"));