Added test for seondaryTargetId being less than 0.

NzbDrone.Core.Test/EpisodeSearchJobTest.cs

@@ -210,6 +210,15 @@ namespace NzbDrone.Core.Test
             mocker.Resolve<EpisodeSearchJob>().Start(new ProgressNotification("Test"), target, 0);
         }
 
+        [TestCase(0)]
+        [TestCase(-1)]
+        [TestCase(-100)]
+        [ExpectedException(typeof(ArgumentOutOfRangeException))]
+        public void start_secondary_target_id_less_than_0_throws_exception(int target)
+        {
+            var mocker = new AutoMoqer(MockBehavior.Strict);
+            mocker.Resolve<SeasonSearchJob>().Start(new ProgressNotification("Test"), 0, target);
+        }
 
         [Test]
         public void start_should_search_all_providers()