Mock You!

Our app has MOQ, pronounced "Mock You" in play for mocking. I'm trying to understand it. It doesn't look that tricky.

using System;

using System.Collections.Generic;

using Microsoft.VisualStudio.TestTools.UnitTesting;

using App.Core;

using App.Core.Entities;

using App.UI.Controllers;

using Moq;

using App.Core.Repositories;

using App.Tests;

using System.Web.Mvc;

using App.UI.Tests.Support;

namespace App.UI.Tests

{

   [TestClass]

   public class ProfileControllerTest

   {

      IProfileRepository fakeRepo { get; set; }

      Mock<IProfileRepository> mockProfileRepository { get; set; }

      

      private static string userWithProfile = @"FOO\ProfileExists";

      private static string userWithoutProfile=@"FOO\NoProfile";

      private static Guid userIdForUserWithProfile = System.Guid.NewGuid();

      Profile existingProfile = TestObjects.BuildProfile(userWithProfile);

      Profile newProfile = new Profile() { UserName = userWithoutProfile };

      

      [TestInitialize]

      public void TestSetup()

      {

         existingProfile.Id = userIdForUserWithProfile;

         mockProfileRepository = new Mock<IProfileRepository>();

         mockProfileRepository.Setup(

            repo => repo.GetByUserName(userWithProfile)

            ).Returns(existingProfile).Verifiable();

         mockProfileRepository.Setup(

            repo => repo.GetById(userIdForUserWithProfile)

            ).Returns(existingProfile).Verifiable();

         mockProfileRepository.Setup(

            repo => repo.GetByUserName(userWithoutProfile)

            ).Returns(default(Profile)).Verifiable();

         mockProfileRepository.Setup(

            repo => repo.Save(existingProfile)

            ).Verifiable();

         mockProfileRepository.Setup(

            repo => repo.Save(newProfile)

            ).Verifiable();

         fakeRepo = mockProfileRepository.Object;

         fakeRepo = mockProfileRepository.Object;

         ServiceLocator.LookupSource = () =>

         {

            var testServices = new Dictionary<string, object>();

            testServices[AppCtxIds.PROFILE_REPOSITORY] = fakeRepo;

            return testServices;

         };

      }

      

      [TestMethod]

      public void ProfileDetailsTest()

      {

         //arrange

         var controller = new ProfileController();

         controller.ProfileRepository = fakeRepo;

         

         //act

         var actionResult = controller.Details(userIdForUserWithProfile);

         var viewResult = (ViewResult)actionResult;

         

         //assert

         mockProfileRepository.Verify(

            pr => pr.GetById(userIdForUserWithProfile), Times.Once()

            );

         Assert.IsNotNull(controller.ProfileRepository);

         var viewProfile = ((Profile)viewResult.ViewData.Model);

         Assert.IsTrue(viewProfile.UserName == userWithProfile);

      }

      

      more code follows...