. Net unit test-common testing methods (exception simulation, return value testing, parameter testing, and database access code testing)

　　　  public bool Valid(string userName, string passWord)        {            if (string.IsNullOrEmpty(userName)) throw new ArgumentNullException("userName is null");            var isValid = userName == "admin" && passWord == "123456";            Log.Write(userName);            return isValid;        }

　　  　　［Test]       [ExpectedException(typeof(ArgumentNullException))]       public void Vaild_Throw_Test()        {            MyLogin l = new MyLogin();            l.Valid("", "123456");        }

　       [Test]        public void Valid_Return()        {            MockRepository mock = new MockRepository();            var log = mock.DynamicMock<ILog>();            using (mock.Record())            {                log.WriteLog("admin");                LastCall.Return(0);            }　　　　　　　 var returnValue = log.WriteLog("admin");　　　　　 　　Assert.AreEqual(returnValue, 0);        }　　 

 

　　  public bool Valid_Paramter(string userName, string passWord)        {            Log.Write(Guid.NewGuid() + userName);            return userName == "admin" && passWord == "123456";        }

[Test] public void Valid_Paramter () {MockRepository mock = new MockRepository (); var log = mock. dynamicMock <ILog> (); using (mock. record () {log. write ("admin"); LastCall. constraints (Rhino. mocks. constraints. text. contains ("admin");} // if the code here is not clear, you can refer to the previous section, which provides instructions. MyLogin login = new MyLogin (); login. log = log; var valid = login. valid_Paramter ("admin"," 123456 "); Assert. areEqual (valid, true); mock. verifyAll ();}

　

  public class RollbackAttribute : Attribute, ITestAction    {        private TransactionScope transaction;        public void BeforeTest(TestDetails testDetails)        {            transaction = new TransactionScope();        }        public void AfterTest(TestDetails testDetails)        {            transaction.Dispose();        }        public ActionTargets Targets        {            get { return ActionTargets.Test; }        }    }

　　

　　 public int Insert(string title)        {            testEntities db = new testEntities();            var titleInfo = new TitleInfo()            {                Title = title            };            db.TitleInfo.Add(titleInfo);            return db.SaveChanges();        }

　

        [Test]        [Rollback]        public void Test_Insert()        {            DBLibrary db = new DBLibrary();            var count = db.Insert("admin");            Assert.True(count > 0);        }  

　　

 

　

    [TestFixture]    class DBLibraryTest    {        TransactionScope socp;        [SetUp]        public void Init()        {            socp = new TransactionScope();        }        [TearDown]        public void Close()        {            socp.Dispose();        }        [Test]        public void Test_Insert()        {            DBLibrary db = new DBLibrary();            var count = db.Insert("admin");            Assert.True(count > 0);        }    }