c# - 当类在服务项目中时，最小起订量在不可覆盖的成员上抛出无效设置

Question

我正在尝试对此类 ServizioController 进行单元测试:

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，起订量给我这个错误:

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

我的测试是这样的:

[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<ServizioController>() { 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，所以这门课将加入图书馆课，但如果有人能向我解释这种行为，我会非常高兴......

谢谢，

Answer 1

您的 Setup 方法需要有一个 Returns，因为您正在模拟的那些方法都返回一个 bool。

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

附带说明一下，在这种情况下您不需要使用Callback，因为Verify 会为您完成这项工作

public void ServizioController_PerformAction_Start()
    {
        //Arrange
        Super.Core.Servizio s = new Super.Core.Servizio()
        {
            Action = ServizioAction.START.ToString()
        };

        var mock = new Mock<ServizioController>() { 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());
    }