MSTest Cheat Sheet by GregFinzer

using Microsoft.VisualStudio.TestTools.UnitTesting;
using ValidationLogic;

namespace UnitTests
{
    //Class Decorator
    [TestClass]
    public class EmailValidationTests
    {
        private EmailValidationLogic _validationLogic;

        //Optional, rarely used. Executes before all tests in the assembly are run
        [AssemblyInitialize]
        public static void AssemblyInit(TestContext context)
        {
        }

        //Optional, rarely used. Runs once before all the tests in this class run
        [ClassInitialize]
        public static void TestFixtureSetup(TestContext context)
        {            
        }

        //This code runs before each test
        [TestInitialize]
        public void Setup()
        {
            _validationLogic = new EmailValidationLogic();
        }


        //Optional, rarely used. Runs once after all tests in the assembly are run
        [AssemblyCleanup()]
        public static void AssemblyCleanup()
        {
        }

        //Optional, rarely used. This runs once after all the tests in this class are run
        [ClassCleanup]
        public static void TestFixtureTearDown()
        {
        }

        //This is code runs after each test
        [TestCleanup]
        public void TearDown()
        {            
        }

        //Example Test Method
        [TestMethod]
        public void EmailShouldNotHaveMoreThanOneAtSymbol()
        {
            //Arrange
            bool expected = false;

            //Act
            bool result = _validationLogic.IsEmailValid("jsmith@@hotmail.com");

            //Assert
            Assert.AreEqual(expected, result, "Email should not have more than one @");
        }

        //Test Exception Being Thrown
        [TestMethod]
        [ExpectedException(typeof(System.DivideByZeroException))]
        public void DivideMethodTest()
        {
            int x = 1;
            int y = x/0;
        }
    }
}