Added some update APIs to check for updates and download and extract the update package.

Todo: apply updated, UI.

NzbDrone.Core.Test/Framework/Fixtures.cs

@@ -4,6 +4,7 @@ using NLog;
 using NLog.Config;
 using NUnit.Framework;
 using NzbDrone.Core;
+using NzbDrone.Core.Providers;
 using NzbDrone.Core.Test.Framework;
 
 [SetUpFixture]
@@ -20,7 +21,7 @@ public class Fixtures
     {
         try
         {
-            LogManager.Configuration = new XmlLoggingConfiguration(Path.Combine(CentralDispatch.AppPath, "log.config"), false);
+            LogManager.Configuration = new XmlLoggingConfiguration(Path.Combine(new EnviromentProvider().AppPath, "log.config"), false);
             LogManager.ThrowExceptions = true;
 
             var exceptionVerification = new ExceptionVerification();

NzbDrone.Core.Test/Framework/TestBase.cs

@@ -1,4 +1,5 @@
-using NUnit.Framework;
+using System.IO;
+using NUnit.Framework;
 using NzbDrone.Core.Providers.Jobs;
 
 namespace NzbDrone.Core.Test.Framework
@@ -11,8 +12,10 @@ namespace NzbDrone.Core.Test.Framework
         public void Setup()
         {
             ExceptionVerification.Reset();
-
-
+            if (Directory.Exists(TempFolder))
+            {
+                Directory.Delete(TempFolder, true);
+            }
         }
 
         [TearDown]
@@ -22,5 +25,20 @@ namespace NzbDrone.Core.Test.Framework
             ExceptionVerification.AssertNoUnexcpectedLogs();
         }
 
+
+        protected string TempFolder
+        {
+            get { return Path.Combine(Directory.GetCurrentDirectory(), "_temp"); }
+        }
+
+        protected string GetTestFilePath(string fileName)
+        {
+            return Path.Combine(@".\Files\", fileName);
+        }
+
+        protected string ReadTestFile(string fileName)
+        {
+            return File.ReadAllText(GetTestFilePath(fileName));
+        }
     }
 }