Application will automatically restart on db error.

Added SyncProvider Tests

NzbDrone.Core.Test/SyncProviderTest.cs

@@ -0,0 +1,45 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+using AutoMoq;
+using Gallio.Framework;
+using MbUnit.Framework;
+using MbUnit.Framework.ContractVerifiers;
+using Moq;
+using NzbDrone.Core.Providers;
+using NzbDrone.Core.Providers.Core;
+using SubSonic.Repository;
+
+namespace NzbDrone.Core.Test
+{
+    [TestFixture]
+    // ReSharper disable InconsistentNaming
+    public class SyncProviderTest
+    {
+        [Test]
+        public void None_existing_folder_returns_empty_list()
+        {
+            string path = "d:\\bad folder";
+
+            var mocker = new AutoMoqer();
+            mocker.GetMock<DiskProvider>(MockBehavior.Strict)
+                .Setup(m => m.FolderExists(path)).Returns(false);
+
+            var result = mocker.Resolve<SyncProvider>().GetUnmappedFolders(path);
+
+            Assert.IsNotNull(result);
+            Assert.IsEmpty(result);
+
+            mocker.VerifyAllMocks();
+        }
+
+        [Test]
+        [ExpectedException(typeof(ArgumentException))]
+        public void empty_folder_path_throws()
+        {
+            var mocker = new AutoMoqer();
+            mocker.Resolve<SyncProvider>().GetUnmappedFolders("");
+        }
+    }
+}