minor cleanup.

NzbDrone.Core.Test/MediaFileTests/MediaFileRepositoryFixture.cs

@@ -63,6 +63,12 @@ namespace NzbDrone.Core.Test.MediaFileTests
             Subject.GetFileByPath(@"C:\Test\EpisodeFile.avi").Should().BeNull();
         }
 
+        [Test]
+        public void exists_should_return_false_if_file_doesnt_exist()
+        {
+            Subject.Exists(@"C:\Test\EpisodeFile.avi").Should().BeFalse();
+        }
+
         [Test]
         public void GetFileByPath_should_return_EpisodeFile_if_file_exists_in_database()
         {

NzbDrone.Core/Datastore/BasicRepository.cs

@@ -106,7 +106,7 @@ namespace NzbDrone.Core.Datastore
         {
             if (model.Id != 0)
             {
-                throw new InvalidOperationException("Can't insert model with existing ID");
+                throw new InvalidOperationException("Can't insert model with existing ID " + model.Id);
             }
 
             DataMapper.Insert(model);

NzbDrone.Core/Parser/ParsingService.cs

@@ -100,7 +100,7 @@ namespace NzbDrone.Core.Parser
 
                 
                 //TODO: this will fail since parsed date will be local, and stored date will be UTC
-                //which means they will probebly end up on diffrent dates
+                //which means they will probably end up on different dates
                 var episodeInfo = _episodeService.GetEpisode(series.Id, parsedEpisodeInfo.AirDate.Value);
 
                 if (episodeInfo != null)

NzbDrone.Core/Tv/Episode.cs

@@ -2,7 +2,6 @@
 using Marr.Data;
 using NzbDrone.Core.Datastore;
 using NzbDrone.Core.MediaFiles;
-using NzbDrone.Core.Model;
 
 
 namespace NzbDrone.Core.Tv

NzbDrone.Core/Tv/RefreshSeriesService.cs

@@ -132,7 +132,7 @@ namespace NzbDrone.Core.Tv
                          episodeToUpdate.SeasonNumber != episode.SeasonNumber) &&
                         episodeToUpdate.EpisodeFileId > 0)
                     {
-                        _logger.Info("Unlinking episode file because the episode number has changed");
+                        _logger.Debug("Un-linking episode file because the episode number has changed");
                         episodeToUpdate.EpisodeFileId = 0;
                     }