Don't try to move episode file that does not exist

#ND-144 fixed

NzbDrone.Core.Test/ProviderTests/DiskScanProviderTests/MoveEpisodeFileFixture.cs

@@ -115,6 +115,10 @@ namespace NzbDrone.Core.Test.ProviderTests.DiskScanProviderTests
                   .Setup(s => s.GetDownloadTitle(It.Is<EpisodeParseResult>(e => e.Quality == new QualityModel { Quality = QualityTypes.WEBDL720p, Proper = false })))
                   .Returns(message);
 
+            Mocker.GetMock<DiskProvider>()
+                  .Setup(s => s.FileExists(currentFilename))
+                  .Returns(true);
+
             Mocker.GetMock<ExternalNotificationProvider>()
                     .Setup(e => e.OnDownload("30 Rock - 1x01 - [WEBDL]", It.IsAny<Series>()));
 
@@ -126,5 +130,63 @@ namespace NzbDrone.Core.Test.ProviderTests.DiskScanProviderTests
             Mocker.GetMock<ExternalNotificationProvider>()
                     .Verify(e => e.OnDownload("30 Rock - 1x01 - [WEBDL]", It.IsAny<Series>()), Times.Once());
         }
+
+        [Test]
+        public void should_log_error_and_return_null_when_source_file_does_not_exists()
+        {
+            var fakeSeries = Builder<Series>.CreateNew()
+                    .With(s => s.SeriesId = 5)
+                    .With(s => s.Title = "30 Rock")
+                    .Build();
+
+            var fakeEpisode = Builder<Episode>.CreateListOfSize(1)
+                    .All()
+                    .With(e => e.SeriesId = fakeSeries.SeriesId)
+                    .With(e => e.SeasonNumber = 1)
+                    .With(e => e.EpisodeNumber = 1)
+                    .Build();
+
+            const string filename = @"30 Rock - S01E01 - TBD";
+            var fi = new FileInfo(Path.Combine(@"C:\Test\TV\30 Rock\Season 01\", filename + ".mkv"));
+            var currentFilename = Path.Combine(@"C:\Test\TV\30 Rock\Season 01\", "30.Rock.S01E01.Test.WED-DL.mkv");
+            const string message = "30 Rock - 1x01 - [WEBDL]";
+
+            var file = Builder<EpisodeFile>.CreateNew()
+                    .With(f => f.SeriesId = fakeSeries.SeriesId)
+                    .With(f => f.Path = currentFilename)
+                    .With(f => f.Quality = QualityTypes.WEBDL720p)
+                    .With(f => f.Proper = false)
+                    .Build();
+
+            Mocker.GetMock<SeriesProvider>()
+                .Setup(e => e.GetSeries(fakeSeries.SeriesId))
+                .Returns(fakeSeries);
+
+            Mocker.GetMock<EpisodeProvider>()
+                .Setup(e => e.GetEpisodesByFileId(file.EpisodeFileId))
+                .Returns(fakeEpisode);
+
+            Mocker.GetMock<MediaFileProvider>()
+                .Setup(e => e.GetNewFilename(fakeEpisode, fakeSeries, It.IsAny<QualityTypes>(), It.IsAny<bool>(), It.IsAny<EpisodeFile>()))
+                .Returns(filename);
+
+            Mocker.GetMock<MediaFileProvider>()
+                .Setup(e => e.CalculateFilePath(It.IsAny<Series>(), fakeEpisode.First().SeasonNumber, filename, ".mkv"))
+                .Returns(fi);
+
+            Mocker.GetMock<DownloadProvider>()
+                    .Setup(s => s.GetDownloadTitle(It.Is<EpisodeParseResult>(e => e.Quality == new QualityModel { Quality = QualityTypes.WEBDL720p, Proper = false })))
+                    .Returns(message);
+
+            Mocker.GetMock<ExternalNotificationProvider>()
+                    .Setup(e => e.OnDownload("30 Rock - 1x01 - [WEBDL]", It.IsAny<Series>()));
+
+            //Act
+            var result = Mocker.Resolve<DiskScanProvider>().MoveEpisodeFile(file, true);
+
+            //Assert
+            result.Should().BeNull();
+            ExceptionVerification.ExpectedErrors(1);
+        }
     }
 }

NzbDrone.Core/Providers/DiskScanProvider.cs

@@ -191,6 +191,12 @@ namespace NzbDrone.Core.Providers
                 return null;
             }
 
+            if(!_diskProvider.FileExists(episodeFile.Path))
+            {
+                Logger.Error("Episode file path does not exist, {0}", episodeFile.Path);
+                return null;
+            }
+
             _diskProvider.CreateDirectory(newFile.DirectoryName);
 
             Logger.Debug("Moving [{0}] > [{1}]", episodeFile.Path, newFile.FullName);