ignore known xem errors.

src/NzbDrone.Core.Test/Providers/XemProxyFixture.cs

@@ -39,13 +39,13 @@ namespace NzbDrone.Core.Test.Providers
             }
         }
 
-        [Test]
+        [TestCase(12345, Description = "invalid id")]
-        public void should_return_empty_when_series_is_not_found()
+        [TestCase(267440, Description = "no single connection")]
+        public void should_return_empty_when_known_error(int id)
         {
-            Subject.GetSceneTvdbMappings(12345).Should().BeEmpty();
+            Subject.GetSceneTvdbMappings(id).Should().BeEmpty();
         }
 
-
         [TestCase(82807)]
         public void should_get_mapping(int seriesId)
         {

src/NzbDrone.Core/DataAugmentation/Xem/XemProxy.cs

@@ -20,6 +20,9 @@ namespace NzbDrone.Core.DataAugmentation.Xem
 
         private const string XEM_BASE_URL = "http://thexem.de/map/";
 
+        private static readonly string[] IgnoredErrors = { "no single connection", "no show with the tvdb_id" };
+
+
         public XemProxy(Logger logger)
         {
             _logger = logger;
@@ -67,10 +70,12 @@ namespace NzbDrone.Core.DataAugmentation.Xem
         private static void CheckForFailureResult<T>(XemResult<T> response)
         {
             if (response.Result.Equals("failure", StringComparison.InvariantCultureIgnoreCase) &&
-                !response.Message.Contains("no show with the tvdb_id"))
+                !IgnoredErrors.Any(knowError => response.Message.Contains(knowError)))
             {
                 throw new Exception("Error response received from Xem: " + response.Message);
             }
         }
+
+
     }
 }