[Test]
        public void CopyingFileShouldNotDeleteOriginal()
        {
            string fileName = "document.docx";
            MemoryStream mStream = new MemoryStream();
            byte[] fakeBinary = mStream.GetBuffer();
            SPSite site = Isolate.Fake.Instance<SPSite>(Members.ReturnRecursiveFakes);
            SPWeb web = Isolate.Fake.Instance<SPWeb>(Members.ReturnRecursiveFakes);
            SPListItem mockSourceListItem = Isolate.Fake.Instance<SPListItem>(Members.ReturnRecursiveFakes);
            SPFile mockSourceFile = Isolate.Fake.Instance<SPFile>(Members.ReturnRecursiveFakes);
            SPFile mockDestinationFile = Isolate.Fake.Instance<SPFile>(Members.ReturnRecursiveFakes);
            SPFile destinationFile;
            SPFileCollection destionationFileCollection = Isolate.Fake.Instance<SPFileCollection>(Members.ReturnRecursiveFakes);
            SPFolder mockSourceFolder = Isolate.Fake.Instance<SPFolder>(Members.ReturnRecursiveFakes);
            SPFolder mockDestinationFolder = Isolate.Fake.Instance<SPFolder>(Members.ReturnRecursiveFakes);
            SPFolder sourceFolder;
            SPFolder destinationFolder;
            Hashtable properties = new Hashtable();
            ISPDocumentUtility docUtil = new SPDocumentUtility();

            Isolate.WhenCalled(() => site.OpenWeb()).WillReturn(web);
            Isolate.WhenCalled(() => mockDestinationFolder.Files).WillReturn(destionationFileCollection);
            Isolate.WhenCalled(() => destionationFileCollection.Add(fileName, fakeBinary, true)).WillReturn(mockDestinationFile);
            Isolate.WhenCalled(() => mockDestinationFile.Properties).WillReturn(new Hashtable());
            Isolate.WhenCalled(() => mockDestinationFile.Name).WillReturn(fileName);
            Isolate.WhenCalled(() => web.Folders["SourceFolder"]).WillReturn(mockSourceFolder);
            Isolate.WhenCalled(() => web.Folders["DestinationFolder"]).WillReturn(mockDestinationFolder);
            Isolate.WhenCalled(() => mockSourceFolder.Files[fileName]).WillReturn(mockSourceFile);
            Isolate.WhenCalled(() => mockSourceFile.Item).WillReturn(mockSourceListItem);
            Isolate.WhenCalled(() => mockSourceFile.Item.Name).WillReturn(fileName);
            Isolate.WhenCalled(() => mockSourceFile.OpenBinary()).WillReturn(fakeBinary);
            Isolate.WhenCalled(() => mockSourceFile.Item.Properties).WillReturn(properties);
            Isolate.WhenCalled(() => mockSourceFile.Properties).WillReturn(properties);
            Isolate.WhenCalled(() => mockSourceFile.Name).WillReturn(fileName);

            properties.Add("Name", fileName);

            web = site.OpenWeb();
            sourceFolder = web.Folders["SourceFolder"];
            destinationFolder = web.Folders["DestinationFolder"];

            docUtil.CopyDocument(sourceFolder, destinationFolder, fileName, fileName);

            destinationFile = destinationFolder.Files[0];
            destinationFile.Name.ShouldBe(fileName);
        }