使用Rhino Mocks

Rhino Mocks是TDD（测试驱动开发）中一个非常重要的组件，这篇文章简单地介绍下这个组件mock的使用。创建2个项目，

1. 对抽象类的mock
   添加ProductBase类
   

   using System;
   
        
   
        namespace RhinoMockProject
   
        {
   
            public abstract class ProductBase
   
            {
   
                public abstract string Name { get; set; }
   
        
   
                public abstract decimal Price { get; set; }
   
        
   
                public abstract void Save();
   
            }
   
        } 

   
   

   [TestMethod]
   
                public void TestStubAbstract()
   
                {
   
                    ProductBase product = MockRepository.GenerateStub<ProductBase>();
   
                    product.Name = "Laptop Computer";
   
                    product.Price = 3200.00m;
   
        
   
                    Assert.AreEqual(3200.00m, product.Price);
   
                }

   
   
   
2. 对接口的mock
   

   public interface IProduct
   
            {
   
                string Name { get; set; }
   
        
   
                decimal Price { get; set; }
   
            }

   
   

   using System;
   
        using System.Collections.Generic;
   
        using System.Linq;
   
        using System.Text;
   
        
   
        namespace RhinoMockProject
   
        {
   
            public class ProductManager
   
            {
   
                public static void DoublePrice(IProduct product)
   
                {
   
                    product.Price *= 2;
   
                }
   
            }
   
        }

   
   

   [TestMethod]
   
                public void TestStubInterface()
   
                {
   
                    decimal price = 3200.00m;
   
                    IProduct product = MockRepository.GenerateStub<IProduct>();
   
                    product.Name = "Laptop Computer";
   
                    product.Price = price;
   
        
   
                    ProductManager.DoublePrice(product);
   
                    Assert.AreEqual(price * 2, product.Price);
   
                }

   
   
3. 对带有返回值方法的mock,注意对有返回值的对象进行mock，MockRepository必须实例化
   

   using System;
   
        using System.Collections.Generic;
   
        using System.Linq;
   
        using System.Text;
   
        
   
        namespace RhinoMockProject
   
        {
   
            public interface IProductRepository
   
            {
   
                IProduct Get(int ProductId);
   
        
   
                IEnumerable<IProduct> Select();
   
        
   
                bool Save(IProduct product);
   
            }
   
        }

   
   
   

   private IEnumerable<IProduct> _fakeProducts = new List<IProduct>
   
                        {
   
                           new Product {Name = "Steak", Price = 9.85m},
   
                           new Product {Name = "Milk", Price = 2.02m},
   
                           new Product {Name = "Diapers", Price = 33.07m}
   
                       };
   
        
   
        
   
                [TestMethod]
   
                public void TestStubInterfaceMethod()
   
                {
   
                    MockRepository mocks = new MockRepository();
   
                    IProductRepository products = mocks.Stub<IProductRepository>();
   
        
   
                    using (mocks.Record())
   
                    {
   
                        SetupResult.For(products.Select()).Return(_fakeProducts);
   
                    }
   
        
   
                    var results = products.Select();
   
        
   
                    Assert.AreEqual(3, results.Count());
   
                }

   
   mock多个返回值
   

   [TestMethod]
   
                public void TestStubMultipleReturn()
   
                {
   
                    MockRepository mocks = new MockRepository();
   
                    IProductRepository products = mocks.Stub<IProductRepository>();
   
        
   
                    using (mocks.Record())
   
                    {
   
                        SetupResult
   
                            .For(products.Get(2))
   
                            .Return(new Product { Name = "Beer", Price = 12.99m });
   
        
   
                        SetupResult
   
                            .For(products.Get(12))
   
                            .Return(new Product { Name = "Steak", Price = 8.02m });
   
                    }
   
        
   
                    // Test
   
                    IProduct product1 = products.Get(2);
   
                    Assert.AreEqual("Beer", product1.Name);
   
        
   
                    IProduct product2 = products.Get(12);
   
                    Assert.AreEqual("Steak", product2.Name);
   
        
   
                    IProduct product3 = products.Get(13);
   
                    Assert.IsNull(product3);
   
                }
   
        
   
                [TestMethod]
   
                public void TestStubIgnoreArguments()
   
                {
   
                    MockRepository mocks = new MockRepository();
   
                    IProductRepository products = mocks.Stub<IProductRepository>();
   
        
   
                    using (mocks.Record())
   
                    {
   
                        SetupResult
   
                            .For(products.Get(1))
   
                            .IgnoreArguments()
   
                         .Return(new Product { Name = "Beer", Price = 12.99m });
   
                    }
   
        
   
                    // Test
   
                    IProduct product1 = products.Get(2);
   
                    Assert.AreEqual("Beer", product1.Name);
   
        
   
                    IProduct product2 = products.Get(12);
   
                    Assert.AreEqual("Beer", product2.Name);
   
                }

   这篇文章简单地介绍了Rahino mock组件在tdd中的应用，代码下载：https://files.cnblogs.com/jackhuclan/ConsoleApplication6.rar
   完整的例子，请参考http://stephenwalther.com/archive/2008/03/23/tdd-introduction-to-rhino-mocks.aspx