使用NUnit和DynamicMock进行单元测试

using  System;
using  System.Collections.Generic;
using  System.Text;
using  NUnit.Framework;
using  NUnit.Mocks;
namespace  DynamicMockDemo
{
    public class Person
    {
        public Person(int id, string name)
        {
            this.Id = id;
            this.Name = name;
        }
        private int id;

        public int Id
        {
            get { return id; }
            set { id = value; }
        }
        private string name;

        public string Name
        {
            get { return name; }
            set { name = value; }
        }
    }
    public interface IDB
    {
        Person GetPersonById(int id);
        IList<Person> GetPersons();
        void DeletePerson(int id);
    }
    [TestFixture]
    public class Dome
    {
        [Test]
        public void Test()
        {
            Person person1 = new Person(1,"aaa");
            Person person2 = new Person(2,"bbb");
            IList<Person> persons = new List<Person>();
            persons.Add(person1);
            persons.Add(person2);

            //创建Mock对象
            DynamicMock dbMock = new DynamicMock(typeof(IDB));
            //模拟GetPersonById方法，传入1,返回person1
            dbMock.ExpectAndReturn("GetPersonById", person1, 1); 
            //模拟GetPersons，返回persons
            dbMock.SetReturnValue("GetPersons", persons);
            //模拟 DeletePerson,传入3,抛出异常
            dbMock.ExpectAndThrow("DeletePerson", new Exception("删除失败"), 3); 
            //获取IDB接口的Mock对象实例
            IDB db = (IDB)dbMock.MockInstance;

            Person testPerson = db.GetPersonById(1);
            Assert.AreEqual(person1.Name, testPerson.Name);

            IList<Person> testPersons = db.GetPersons();
            Assert.AreEqual(2, testPersons.Count);

            try
            {
                db.DeletePerson(3);
            }
            catch (Exception e)
            {
                Assert.AreEqual("删除失败", e.Message);
            }
            
        }
    }
}