.net freamwork 4.5 shim type最新Unit框架

建立新的控制台工程，代码如下：

Class1:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
    public class Class1
    {
        public int AddMethod(int a, int b)
        {
            return a + b;
        }

        public DateTime GetTime()
        {
            return new DateTime(2000, 1, 1);
        }

        public static string GetHello()
        {
            return "hello world";
        }

        public string GetInsertMethod()
        {
            return new Class3().InsertMethod();
        }
    }
}

Class2:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
    public static class Class2
    {
        public static string GetString()
        {
            return "hello world";
        }
    }
}

 

Class3:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
    public class Class3
    {
        public string InsertMethod()
        {
            return "insert method";
        }
    }
}

 建立Test Project：

UnitTest:

using System;
using System.Fakes;
using ConsoleApplication1;
using ConsoleApplication1.Fakes;
using Microsoft.QualityTools.Testing.Fakes;
using Microsoft.VisualStudio.TestTools.UnitTesting;

namespace UnitTestProject2
{
    [TestClass]
    public class UnitTest1
    {
        [TestMethod]
        public void TestStaticDate()
        {
            using (ShimsContext.Create())
            {
                // to return January 1st of 2000                
                ShimDateTime.NowGet = () => new DateTime(2000, 1, 1);
                Assert.AreEqual(new Class1().GetTime(), DateTime.Now);
            }
        }
        [TestMethod]
        public void TestStaticClass()
        {
            using (ShimsContext.Create())
            {
                ShimClass2.GetString = () => "Jason";
                Assert.AreEqual(Class2.GetString(), "Jason");
            }
        }

        [TestMethod]
        public void TestStaticMethod()
        {
            using (ShimsContext.Create())
            {
                ShimClass1.GetHello = () => { return "test3"; };
                Assert.AreEqual(Class1.GetHello(), "test3");
            }
        }

        [TestMethod]
        public void TestAddMethod()
        {
            using (ShimsContext.Create())
            {
                //Func<Class1, int, int, int> test =
                ShimClass1.AllInstances.AddMethodInt32Int32 = (class1, b, c) =>
                {
                    DateTime time = class1.GetTime();
                    return 5;
                };

                Assert.AreEqual(new Class1().AddMethod(1, 2), 5);
            }
        }

        [TestMethod]
        public void TestSonMethod1()
        {
            using (ShimsContext.Create())
            {
                ShimClass3.AllInstances.InsertMethod = (class3) =>
                    {
                        return "change son method...";
                    };
                Assert.AreEqual(new Class1().GetInsertMethod(), "change son method...");
            }
        }
    }
}

在Fake Freamwork 中，Shim type类型可以对static 和一些普通方法进行欺骗，msdn中这样描述：Shim types allow detouring of hard-coded dependencies on static or non-overridable methods

更多信息参考：Isolating Unit Test Methods with Microsoft Fakes

http://msdn.microsoft.com/en-us/library/hh549175%28v=vs.110%29.aspx