FreeSpaceSpec will return true is free space check returns null

NzbDrone.Core.Test/MediaFiles/EpisodeImport/Specifications/FreeSpaceSpecificationFixture.cs

@@ -123,14 +123,24 @@ namespace NzbDrone.Core.Test.MediaFiles.EpisodeImport.Specifications
         [Test]
         public void should_skip_check_for_files_under_series_folder()
         {
-            Mocker.GetMock<IDiskProvider>()
-                  .Setup(s => s.IsParent(It.IsAny<String>(), It.IsAny<String>()))
-                  .Returns(true);
+            _localEpisode.ExistingFile = true;
 
             Subject.IsSatisfiedBy(_localEpisode).Should().BeTrue();
 
             Mocker.GetMock<IDiskProvider>()
                   .Verify(s => s.GetAvailableSpace(It.IsAny<String>()), Times.Never());
         }
+
+        [Test]
+        public void should_return_true_if_free_space_is_null()
+        {
+            long? freeSpace = null;
+
+            Mocker.GetMock<IDiskProvider>()
+                  .Setup(s => s.GetAvailableSpace(It.IsAny<String>()))
+                  .Returns(freeSpace);
+
+            Subject.IsSatisfiedBy(_localEpisode).Should().BeTrue();
+        }
     }
 }

NzbDrone.Core.Test/MediaFiles/EpisodeImport/Specifications/NotInUseSpecificationFixture.cs

@@ -29,9 +29,7 @@ namespace NzbDrone.Core.Test.MediaFiles.EpisodeImport.Specifications
 
         private void GivenChildOfSeries()
         {
-            Mocker.GetMock<IDiskProvider>()
-                .Setup(s => s.IsParent(_localEpisode.Series.Path, _localEpisode.Path))
-                .Returns(true);
+            _localEpisode.ExistingFile = true;
         }
 
         private void GivenNewFile()

NzbDrone.Core/MediaFiles/EpisodeImport/Specifications/FreeSpaceSpecification.cs

@@ -23,7 +23,7 @@ namespace NzbDrone.Core.MediaFiles.EpisodeImport.Specifications
         {
             try
             {
-                if (_diskProvider.IsParent(localEpisode.Series.Path, localEpisode.Path))
+                if (localEpisode.ExistingFile)
                 {
                     _logger.Trace("Skipping free space check for existing episode");
                     return true;
@@ -32,6 +32,12 @@ namespace NzbDrone.Core.MediaFiles.EpisodeImport.Specifications
                 var path = Directory.GetParent(localEpisode.Series.Path);
                 var freeSpace = _diskProvider.GetAvailableSpace(path.FullName);
 
+                if (!freeSpace.HasValue)
+                {
+                    _logger.Trace("Free space check returned an invalid result for: {0}", path);
+                    return true;
+                }
+
                 if (freeSpace < localEpisode.Size + 100.Megabytes())
                 {
                     _logger.Warn("Not enough free space to import: {0}", localEpisode);

NzbDrone.Core/MediaFiles/EpisodeImport/Specifications/NotInUseSpecification.cs

@@ -19,7 +19,7 @@ namespace NzbDrone.Core.MediaFiles.EpisodeImport.Specifications
 
         public bool IsSatisfiedBy(LocalEpisode localEpisode)
         {
-            if (_diskProvider.IsParent(localEpisode.Series.Path, localEpisode.Path))
+            if (localEpisode.ExistingFile)
             {
                 _logger.Trace("{0} is in series folder, skipping in use check", localEpisode.Path);
                 return true;

NzbDrone.Core/MediaFiles/EpisodeImport/Specifications/NotUnpackingSpecification.cs

@@ -24,7 +24,7 @@ namespace NzbDrone.Core.MediaFiles.EpisodeImport.Specifications
 
         public bool IsSatisfiedBy(LocalEpisode localEpisode)
         {
-            if (_diskProvider.IsParent(localEpisode.Series.Path, localEpisode.Path))
+            if (localEpisode.ExistingFile)
             {
                 _logger.Trace("{0} is in series folder, unpacking check", localEpisode.Path);
                 return true;

NzbDrone.Core/Parser/Model/LocalEpisode.cs

@@ -7,12 +7,13 @@ namespace NzbDrone.Core.Parser.Model
 {
     public class LocalEpisode
     {
-        public string Path { get; set; }
+        public String Path { get; set; }
         public Int64 Size { get; set; }
         public ParsedEpisodeInfo ParsedEpisodeInfo { get; set; }
         public Series Series { get; set; }
         public List<Episode> Episodes { get; set; }
         public QualityModel Quality { get; set; }
+        public Boolean ExistingFile { get; set; }
         
         public int SeasonNumber 
         { 

NzbDrone.Core/Parser/ParsingService.cs

@@ -1,6 +1,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using NLog;
+using NzbDrone.Common;
 using NzbDrone.Core.Parser.Model;
 using NzbDrone.Core.Tv;
 
@@ -18,12 +19,17 @@ namespace NzbDrone.Core.Parser
     {
         private readonly IEpisodeService _episodeService;
         private readonly ISeriesService _seriesService;
+        private readonly IDiskProvider _diskProvider;
         private readonly Logger _logger;
 
-        public ParsingService(IEpisodeService episodeService, ISeriesService seriesService, Logger logger)
+        public ParsingService(IEpisodeService episodeService,
+                              ISeriesService seriesService,
+                              IDiskProvider diskProvider,
+                              Logger logger)
         {
             _episodeService = episodeService;
             _seriesService = seriesService;
+            _diskProvider = diskProvider;
             _logger = logger;
         }
 
@@ -54,7 +60,8 @@ namespace NzbDrone.Core.Parser
                 Quality = parsedEpisodeInfo.Quality,
                 Episodes = episodes,
                 Path = filename,
-                ParsedEpisodeInfo = parsedEpisodeInfo
+                ParsedEpisodeInfo = parsedEpisodeInfo,
+                ExistingFile = _diskProvider.IsParent(series.Path, filename)
             };
         }