WPF Prism 中的单元测试确认

Question

我正在使用 Prism 的 Confirmation 类向用户询问 Confirmation。当我进行单元测试时，确认的返回值总是错误的。也许我可以公开 InteractionRequest 的设置器。我的代码现在看起来像这样，我的单元测试应该验证 this.copyService.Execute 是否被调用。

public InteractionRequest<Confirmation> CopyProjectConfirmationRequest { get; private set; }

    bool confirmationResult = false;
    DialogConfirmation dialogConfirmation = new DialogConfirmation
                                              {
                                                Title = "Copy and Convert Project",
                                                Content = string.Format("This Project was created with Version {0} to be used with currentVersion({1}) it must be converted should it copyed and converted Project", projectVersion, toolVersion),
                                                ConfirmButtonText = "Copy & Convert",
                                                DeclineButtonText = "Cancel"
                                              };

    this.CopyProjectConfirmationRequest .Raise(dialogConfirmation, cb => { confirmationResult = cb.Confirmed; });

    if (confirmationResult)
    {
      this.copyService.Execute(this.Model);
    }

Answer 1

解决方案很简单。只需在 UnitTest 中添加它

  sut.CopyProjectConfirmationRequest.Raised += (s, e) =>
  {
    Confirmation context = e.Context as Confirmation;
    context.Confirmed = true;
    e.Callback();
  };

Answer 2

您可以尝试模拟 copyService 并针对模拟进行测试 Moq的可能实现

Mock<ICopyService> mockService;

....注入VM或具有CopyProjectConfirmationRequest属性的类。

mockService.Verify(x => x.Execute(It.Is<Model>(...));

至于CopyProjectConfirmationRequest，我会将属性公开，并在单元测试中存根。