public void Save_Action_Will_Open_SaveDialog()
{
var dialogModel = new SaveFileDialogViewModel {
Result = true
};
_dialogService.Expect(x => x.ShowSaveFileDialog(dialogModel));
_viewModelFactory.Expect(x => x.Create <ISaveFileDialogViewModel>()).Return(dialogModel);
var viewModel = CreateProjectViewModel();
viewModel.Save();
_dialogService.AssertWasCalled(x => x.ShowSaveFileDialog(Arg.Is(dialogModel)), x => x.Repeat.Once());
}