Fixed: Parsing similar series titles with common words at end

src/NzbDrone.Core.Test/ParserTests/NormalizeTitleFixture.cs

@@ -36,16 +36,13 @@ namespace NzbDrone.Core.Test.ParserTests
         [TestCase("or")]
         [TestCase("an")]
         [TestCase("of")]
-        public void should_remove_common_words(string word)
+        public void should_remove_common_words_from_middle_of_title(string word)
         {
             var dirtyFormat = new[]
                             {
                                 "word.{0}.word",
                                 "word {0} word",
-                                "word-{0}-word",
+                                "word-{0}-word"
-                                "word.word.{0}",
-                                "word-word-{0}",
-                                "word-word {0}",
                             };
 
             foreach (var s in dirtyFormat)
@@ -55,6 +52,27 @@ namespace NzbDrone.Core.Test.ParserTests
             }
         }
 
+        [TestCase("the")]
+        [TestCase("and")]
+        [TestCase("or")]
+        [TestCase("an")]
+        [TestCase("of")]
+        public void should_not_remove_common_words_from_end_of_title(string word)
+        {
+            var dirtyFormat = new[]
+                              {
+                                  "word.word.{0}",
+                                  "word-word-{0}",
+                                  "word-word {0}"
+                              };
+
+            foreach (var s in dirtyFormat)
+            {
+                var dirty = string.Format(s, word);
+                dirty.CleanSeriesTitle().Should().Be("wordword" + word.ToLower());
+            }
+        }
+
         [Test]
         public void should_remove_a_from_middle_of_title()
         {

src/NzbDrone.Core.Test/ParserTests/SingleEpisodeParserFixture.cs

@@ -142,6 +142,7 @@ namespace NzbDrone.Core.Test.ParserTests
         [TestCase("tvs-amgo-dd51-dl-7p-azhd-x264-103", "tvs-amgo-dd51-dl-7p-azhd", 1, 3)]
         [TestCase("Series Title - S01E01 [AC3 5.1 Castellano][www.descargas2020.org]", "Series Title", 1, 1)]
         [TestCase("Series Title - [02x01] - Episode 1", "Series Title", 2, 1)]
+        [TestCase("Series.Title.Of.S01E01.xyz", "Series Title Of", 1, 1)]
         //[TestCase("", "", 0, 0)]
         public void should_parse_single_episode(string postTitle, string title, int seasonNumber, int episodeNumber)
         {

src/NzbDrone.Core/Parser/Parser.cs

@@ -368,7 +368,7 @@ namespace NzbDrone.Core.Parser
         //Regex to detect whether the title was reversed.
         private static readonly Regex ReversedTitleRegex = new Regex(@"(?:^|[-._ ])(p027|p0801|\d{2,3}E\d{2}S)[-._ ]", RegexOptions.Compiled);
 
-        private static readonly RegexReplace NormalizeRegex = new RegexReplace(@"((?:\b|_)(?<!^)(a(?!$)|an|the|and|or|of)(?:\b|_))|\W|_",
+        private static readonly RegexReplace NormalizeRegex = new RegexReplace(@"((?:\b|_)(?<!^)(a(?!$)|an|the|and|or|of)(?!$)(?:\b|_))|\W|_",
                                                                 string.Empty,
                                                                 RegexOptions.IgnoreCase | RegexOptions.Compiled);