mock测试就是在中，对于某些不容易构造或者不容易获取的对象，用一个虚拟的对象来创建以便测试的测试方法.

1 using Moq; 2  3 // Assumptions: 4  5 public interface IFoo 6 { 7     Bar Bar { get; set; } 8     string Name { get; set; } 9     int Value { get; set; }10     bool DoSomething(string value);11     bool DoSomething(int number, string value);12     string DoSomethingStringy(string value);13     bool TryParse(string value, out string outputValue);14     bool Submit(ref Bar bar);15     int GetCount();16     bool Add(int value);17 }18 19 public class Bar 20 {21     public virtual Baz Baz { get; set; }22     public virtual bool Submit() { return false; }23 }24 25 public class Baz26 {27     public virtual string Name { get; set; }28 }

上面给了一个类，接下来演示怎么mock这个类，并且模拟某些方法的返回值

1 var mock = new Mock
     
      ();2 mock.Setup(foo => foo.DoSomething("ping")).Returns(true);3 4 mock.Setup(foo => foo.DoSomething(It.IsAny
      
       (),It.IsAny
       
        ())).Returns(true);
       
      
     

第一行Mock出了一个虚拟对象

第二行说明当调用IFoo的DoSomething(string value)方法，且传入参数"ping"的时候，不论DoSomething里面的代码是什么，都会返回true，即直接跳过DoSomething里面的所有代码

第三行说明当调用IFoo的DoSomething(int num,string value)时，不论传入的num和value值为什么，都返回true

 

能设置方法的返回值，当然也能设置属性的值

1 mock.Setup(foo => foo.Name).Returns("bar");

 

还有一些神奇的操作，我太懒了不想写，放个代码示例方便查看~~

Callbacks

1 var mock = new Mock
     
      ();2 var calls = 0;3 var callArgs = new List
      
       ();4 5 mock.Setup(foo => foo.DoSomething("ping"))6     .Returns(true)7     .Callback(() => calls++);
      
     

Verification

1 mock.Verify(foo => foo.DoSomething("ping"));

miscellaneous

1 var mock = new Mock
     
      ();2 mock.SetupSequence(f => f.GetCount())3     .Returns(3)  // will be returned on 1st invocation4     .Returns(2)  // will be returned on 2nd invocation5     .Returns(1)  // will be returned on 3rd invocation6     .Returns(0)  // will be returned on 4th invocation7     .Throws(new InvalidOperationException());