asp.net mvc3 UnitOfWork单元测试帮助 [英] asp.net mvc3 UnitOfWork unit test help

问题描述

我有一个工作单元，如下所示:

Hi,

I have a unit of work class which is as below:

public class UnitOfWork : IUnitOfWork, IDisposable
    {
        private readonly EFDbContext context;
        private IGenericRepository<Category> _categoryRepository;
        private IGenericRepository<Product> _productRepository;


        #region Contructor
        public UnitOfWork()
        {
            context = new EFDbContext();
        }
        #endregion

        public IGenericRepository<Category> CategoryRepository
        {
            get
            {
                if (_categoryRepository == null)
                {
                  _categoryRepository = new EFGenericRepository<Category>(context);
                }
                return _categoryRepository;
            }
        }

        public IGenericRepository<Product> ProductRepository
        {
            get
            {
                if (_productRepository == null)
                {
                    _productRepository = new EFGenericRepository<Product>(context);
                }
                return _productRepository;
            }
        }

        // Save.. Dispose etc omitted
    }// end of class

我定义了一个新接口IPriceIncreaser.目的:提高产品库存中所有产品的价格

I defined a new Interface, IPriceIncreaser. Purpose: Increase prices of all products in Product inventory

public class PriceIncreaser : IPriceIncreaser
    {
        private IUnitOfWork unitOfWork;

        public PriceIncreaser(IUnitOfWork unitOfWorkParam)
        {
            unitOfWork = unitOfWorkParam;
        }

        public void IncreasePrice(decimal increaseAmount)
        {
            foreach (Product p in unitOfWork.ProductRepository.Get())
            {
                p.Price += increaseAmount;
            }
        }
    }

现在，我想使用Moq作为单元测试框架对仓库进行单元测试.

我编写了以下单元测试:

Now, i want to unit test my repo, using Moq as the unit testing framework.

I''ve written the following unit test:

[TestMethod]
        public void Can_Increase_Prices()
        {
           

            var mockProductRepo = new Mock<IGenericRepository<Product>>();
            mockProductRepo.Object.Insert(new Product { Name = "MP", Description  ="HI", Price = 2500 });
             
            // mock Unit of work here...
           

            decimal initalProductTotalPrice = mockUnitOfWork.Object.ProductRepository.Get().Sum(p => p.Price);

            decimal increaseAmount = 55;

            // Act:
            PriceIncreaser target = new PriceIncreaser(mockUnitOfWork.Object);
            target.IncreasePrice(increaseAmount);

            // Assert
            Assert.AreNotEqual(initalProductTotalPrice, mockUnitOfWork.Object.ProductRepository.Get().Sum(p => p.Price));
        }

但是运行测试时出现错误:

无法覆盖非虚拟成员... ProductRepository

通过阅读其他线程，我意识到Moq只会模拟接口和抽象方法/字段.

我想知道我现在如何编写模拟IProductric存储库的单元测试，该产品类型为IGenericRepository< Product>.包含在UnitOfWork.ProductRepository和UnitOfWork中的是一个IUnitOfWork.

任何和所有建议表示赞赏.

But i''m getting an error when i run the test which says:

Cannot override Non-Virtual member ...ProductRepository

I realize from reading other threads that Moq will only mock Interfaces, and abstract methods/fields.

I want to know how i can now write a unit test, which mocks my Product repository, which is of type IGenericRepository<Product> contained within UnitOfWork.ProductRepository and UnitOfWork is-a IUnitOfWork.

Any and all suggestions appreciated.

Thanks.

推荐答案

错误无法覆盖非虚拟成员... ProductRepository"表示Moq正在尝试覆盖"非虚拟方法.所以有定义的方法

The error "Cannot override Non-Virtual member ...ProductRepository" indicates that Moq is attempting "override" a method that is not virtual. So a method w/ definition

public void Something() { ... }

不能被覆盖.但这可以是:

cannot be overridden. But this can be :

public virtual void Something() { ... }

查看以下讨论使用Moq时重写虚拟方法的内容.

http://stackoverflow.com/questions/3539278/using-moq-to-override-virtual-methods-in-the-same-class [ ^ ]

Check out the following that discusses about overriding a virtual method when using Moq.

http://stackoverflow.com/questions/3539278/using-moq-to-override-virtual-methods-in-the-same-class[^]

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