当类在Service Project中时，Moq会在不可覆盖的成员上抛出无效设置

我正在尝试对这个类ServizioController进行unit testing：

public class ServizioController : IServizioController { public virtual void PerformAction(Super.Core.Servizio servizio) { } public virtual bool Start() { throw new NotImplementedException(); } public virtual bool Stop() { throw new NotImplementedException(); } public virtual bool Continue() { throw new NotImplementedException(); } } 

如果这个类是测试或库项目的一部分，那就没问题了。 但是当它在服务项目中时，Moq正在向我抛出这个错误：

 Invalid setup on a non-overridable member: x => x.Start() 

我的测试看起来像这样：

 [TestMethod] public void ServizioController_PerformAction_Start() { //Arrange bool _start, _stop, _continue; _start = _stop = _continue = false; Super.Core.Servizio s = new Super.Core.Servizio() { Action = ServizioAction.START.ToString() }; var mock = new Mock() { CallBase = true };; mock.Setup(x => x.Start()) .Callback(() => _start = true); mock.Setup(x => x.Stop()) .Callback(() => _stop = true); mock.Setup(x => x.Continue()) .Callback(() => _continue = true); //Act mock.Object.PerformAction(s); //Assert Assert.IsTrue(_start); Assert.IsFalse(_stop); Assert.IsFalse(_continue); } 

我愿意继续，所以本课程将加入图书馆课程，但如果有人能解释我这种行为，我会非常高兴…

谢谢，

Answer 1

你的Setup方法需要有一个Returns因为那些你嘲笑的方法都返回一个bool。

 mock.Setup(x => x.Start()).Returns(true); 

在旁注中，您不需要在此实例中使用Callback ，因为Verify将为您完成工作

 public void ServizioController_PerformAction_Start() { //Arrange Super.Core.Servizio s = new Super.Core.Servizio() { Action = ServizioAction.START.ToString() }; var mock = new Mock() { CallBase = true }; mock.Setup(x => x.Start()).Returns(true); mock.Setup(x => x.Stop()).Returns(true); mock.Setup(x => x.Continue()).Returns(true); //Act mock.Object.PerformAction(s); //Assert mock.Verify(x => x.Start()); mock.Verify(x => x.Stop()); mock.Verify(x => x.Continue()); }