Moving file from same source/destination no longer just deletes the file.

NzbDrone.Common.Test/DiskProviderTests.cs

@@ -48,6 +48,20 @@ namespace NzbDrone.Common.Test
             File.Exists(targetPath).Should().BeTrue();
         }
 
+        [Test]
+        public void moveFile_should_not_move_overwrite_itself()
+        {
+            var diskProvider = new DiskProvider();
+            diskProvider.CopyDirectory(BinFolder.FullName, BinFolderCopy.FullName);
+
+            var targetPath = BinFolderCopy.GetFiles("*.dll", SearchOption.AllDirectories).First().FullName;
+
+            diskProvider.MoveFile(targetPath, targetPath);
+
+            File.Exists(targetPath).Should().BeTrue();
+            ExceptionVerification.ExcpectedWarns(1);
+        }
+
         [Test]
         public void CopyFolder_should_copy_folder()
         {

NzbDrone.Common/DiskProvider.cs

@@ -125,14 +125,20 @@ namespace NzbDrone.Common
             File.Delete(path);
         }
 
-        public virtual void MoveFile(string sourcePath, string destinationPath)
+        public virtual void MoveFile(string source, string destination)
         {
-            if (FileExists(destinationPath))
+            if (PathEquals(source, destination))
             {
-                DeleteFile(destinationPath);
+                Logger.Warn("Source and destination can't be the same {0}", source);
+                return;
             }
 
-            File.Move(sourcePath, destinationPath);
+            if (FileExists(destination))
+            {
+                DeleteFile(destination);
+            }
+
+            File.Move(source, destination);
         }
 
         public virtual void DeleteFolder(string path, bool recursive)