TDD：几个Mock框架

/*
 * stub和mock的微妙区别：
 * stub对象不会使测试失败
 * mock对象只是替换外部依赖，使测试中的对象可以运行并以测试。
 * mock对象可以使测试失败，同时可以验证两个对象之间的交互是否按照期望的方式进行。
 */
using Mocking.Model;
using Mocking.ModelTest.Stubs;
using Mocking.ModelTest.Mocks;

using NUnit.Framework;
using NUnit.Mocks;

using Rhino.Mocks;



namespace Mocking.ModelTest
{
    #region 手动写Stub(存根)、Mock(模拟）

    [TestFixture]
    public class HolidayRequestServiceHandRolledTest
    {
      
        [Test()]
        public void The_HolidayRequestService_Will_Approve_A_HolidayRequest_ThatIs_Granted_By_The_Validator()
        {
            HolidayRequest holidayRequest = new HolidayRequest();
            AlwaysValidHolidayRequestValidator validator = new AlwaysValidHolidayRequestValidator();
            StubHolidayRequestRepository stubHolidayRequestRepository = new StubHolidayRequestRepository();

            //需要测试的类
            HolidayRequestService holidayRequestService = new HolidayRequestService(validator, stubHolidayRequestRepository);
            holidayRequest.Approved = false;
            holidayRequestService.Submit(holidayRequest);

            Assert.AreEqual(true, holidayRequest.Approved);
        }

        [Test()]
        public void AHolidayRequestThatIsApprovedByTheRequestServiceIsSavedByTheRepsitory()
        {
            HolidayRequest holidayRequest = new HolidayRequest();
            AlwaysValidHolidayRequestValidator validator = new AlwaysValidHolidayRequestValidator();
            MockHolidayRequestRepository mockHolidayRequestRepository = new MockHolidayRequestRepository();

            //需要测试的类
            HolidayRequestService holidayRequestService = new HolidayRequestService(validator, mockHolidayRequestRepository);
            holidayRequestService.Submit(holidayRequest);

            Assert.AreEqual(holidayRequest, mockHolidayRequestRepository.HolidayRequestSaved);
        }

        
    }

    #endregion

    #region 使用nunit.mock
    [TestFixture]
    public class HolidayRequestServiceHandRolledUnitMockTest
    {
        [Test()]
        public void The_HolidayRequestService_Will_Approve_A_HolidayRequest_ThatIs_Granted_By_The_Validator()
        {
            HolidayRequest holidayRequest = new HolidayRequest();

            DynamicMock holidayRequestValidatorMock = new DynamicMock(typeof(IHolidayRequestValidator));
            DynamicMock holidayRequestRepositoryMock = new DynamicMock(typeof(IHolidayRequestRepository));

            holidayRequestValidatorMock.ExpectAndReturn("CanGrant", true, holidayRequest);
 
            IHolidayRequestValidator holidayRequestValidator = (IHolidayRequestValidator)holidayRequestValidatorMock.MockInstance;
            IHolidayRequestRepository holidayRequestRepository = (IHolidayRequestRepository)holidayRequestRepositoryMock.MockInstance;
           
            //需要测试的类
            HolidayRequestService holidayRequestService = new HolidayRequestService(holidayRequestValidator, holidayRequestRepository);
            holidayRequest.Approved = false;
            holidayRequestService.Submit(holidayRequest);

            Assert.AreEqual(true, holidayRequest.Approved);
        }

        [Test()]
        public void AHolidayRequestThatIsApprovedByTheRequestServiceIsSavedByTheRepsitory()
        {
            //HolidayRequest holidayRequest = new HolidayRequest();

            //DynamicMock holidayRequestValidatorMock = new DynamicMock(typeof(IHolidayRequestValidator));
            //DynamicMock holidayRequestRepositoryMock = new DynamicMock(typeof(IHolidayRequestRepository));
            //IHolidayRequestValidator holidayRequestValidator = (IHolidayRequestValidator)holidayRequestValidatorMock.MockInstance;
            //IHolidayRequestRepository holidayRequestRepository = (IHolidayRequestRepository)holidayRequestRepositoryMock.MockInstance;

            ////需要测试的类
            //HolidayRequestService holidayRequestService = new HolidayRequestService(holidayRequestValidator, holidayRequestRepository);
            //holidayRequestService.Submit(holidayRequest);
            ////Assert.AreEqual(holidayRequest, holidayRequestRepository.HolidayRequestSaved);
        }
    }


    #endregion

    #region 使用Rhino.Mocks中的stub、mock
    /// <summary>
    /// 使用Rhino.Mocks
    /// </summary>
    [TestFixture]
    public class HolidayRequestServiceHandRolledRhinoMocksTest
    {
        [Test()]
        public void The_HolidayRequestService_Will_Approve_A_HolidayRequest_ThatIs_Granted_By_The_Validator()
        {
            HolidayRequest holidayRequest = new HolidayRequest();

            Rhino.Mocks.MockRepository mocks = new Rhino.Mocks.MockRepository();
            var validator = mocks.Stub<IHolidayRequestValidator>();  //使用反射创建该类实例
            var stubHolidayRequestRepository = mocks.Stub<IHolidayRequestRepository>();

            using (mocks.Record()) //设置存根类的方法被调用时该存根类的响应方式
            {
                //为stub（存根）设置返回值
                SetupResult.For(validator.CanGrant(holidayRequest)).Return(true);
            }

            using (mocks.Playback())
            {
                //需要测试的类
                HolidayRequestService holidayRequestService = new HolidayRequestService(validator, stubHolidayRequestRepository);
                holidayRequest.Approved = false;
                holidayRequestService.Submit(holidayRequest);
                Assert.AreEqual(true, holidayRequest.Approved);
            }

        }

        [Test()]
        public void AHolidayRequestThatIsApprovedByTheRequestServiceIsSavedByTheRepsitory()
        {
            HolidayRequest holidayRequest = new HolidayRequest();

            Rhino.Mocks.MockRepository mocks = new Rhino.Mocks.MockRepository();
            var validator = mocks.Stub<IHolidayRequestValidator>();
            //var mockHolidayRequestRepository = mocks.CreateMock<IHolidayRequestRepository>();
            var mockHolidayRequestRepository = mocks.StrictMock<IHolidayRequestRepository>();

            using (mocks.Record())
            {
                //设置返回值
                SetupResult.For(validator.CanGrant(holidayRequest)).Return(true);

                mockHolidayRequestRepository.Save(holidayRequest);
                LastCall.Repeat.Once();
            }

            using (mocks.Playback())
            {
                //需要测试的类
                HolidayRequestService holidayRequestService = new HolidayRequestService(validator, mockHolidayRequestRepository);
                holidayRequest.Approved = false;
                holidayRequestService.Submit(holidayRequest);

                //注意：该测试没有调用断言语句，那在哪里进行验证调用????????????

            }
        } 
       
    }
    #endregion

    #region 框架Moq

    [TestFixture]
    public class HolidayRequestServiceHandRolledUsingMoq
    {
        [Test()]
        public void The_HolidayRequestService_Will_Approve_A_HolidayRequest_ThatIs_Granted_By_The_Validator()
        {
            HolidayRequest holidayRequest = new HolidayRequest();
            var holidayRequestValidator = new Moq.Mock<IHolidayRequestValidator>();
            var holidayRequestRepository = new Moq.Mock<IHolidayRequestRepository>();

            holidayRequestValidator.Setup(validator => validator.CanGrant(holidayRequest)).Returns(true);

            HolidayRequestService holidayRequestService = new HolidayRequestService(holidayRequestValidator.Object, holidayRequestRepository.Object);

            holidayRequest.Approved = false;
            holidayRequestService.Submit(holidayRequest);

            Assert.AreEqual(true, holidayRequest.Approved);
        }

        [Test()]
        public void AHolidayRequestThatIsApprovedByTheRequestServiceIsSavedByTheRepsitory()
        {
            HolidayRequest holidayRequest = new HolidayRequest();
            var holidayRequestValidator = new Moq.Mock<IHolidayRequestValidator>();
            var holidayRequestRepository = new Moq.Mock<IHolidayRequestRepository>();

            //需要测试的类
            HolidayRequestService holidayRequestService = new HolidayRequestService(holidayRequestValidator.Object,holidayRequestRepository.Object);
            holidayRequestService.Submit(holidayRequest);

            //Assert.AreEqual(holidayRequest, holidayRequestRepository.Object.Save());
        }
    }
    #endregion
}