private FakeFileInfoAdapter SetupFakeFileInfo(string document)
 {
     FakeFileInfoAdapter infoFake = new FakeFileInfoAdapter(document)
     {
         LastWriteTime = DateTime.Now
     };
     return infoFake;
 }
 public void Setup(string document)
 {
     var contextMock = SetupContextMock();
     _infoFake = SetupFakeFileInfo(document);
     _provider = new XmlOffsetProvider(contextMock.Object, _infoFake);
 }