Moq, Unity and Servicelocator

Unit testing code that utilizes Unity, ServiceLocator with Moq framework is a thing of a beauty. Well,not really but a pain if it's your first time. Why? Because if you are a heavy google first, code second type of a developer then googling for Moq + ServiceLocator implementation would only give you Moq + Unity but no ServiceLocator implementation or examples. So, after spending nearly an hr, decided to share or at least remind myself how to for the next time:

Bootstrapping your ServiceLocator:
Note: This is the initialization of Unity in your code

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public static class Bootstrapper {     public static void Initialise()     {         var container = BuildUnityContainer();           var provider = new UnityServiceLocator(container);         ServiceLocator.SetLocatorProvider(() => provider);           GlobalConfiguration.Configuration.DependencyResolver = new Unity.WebApi.UnityDependencyResolver(container);     }       private static IUnityContainer BuildUnityContainer()     {         var container = new UnityContainer();           container.RegisterType<IAssetManager, AssetManager>();           return container;     } }

Then in your calling method you would do something like this:

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1	IAssetManager _assetManager = ServiceLocator.Current.GetInstance<IAssetManager>();

Following is how to moq the above Unity and ServiceLocator instance in Unit test cases:

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using Moq; using Microsoft.Practices.ServiceLocation;   var mockManager = new Mock<IAssetManager>(); var mockServiceLocator = new Mock<IServiceLocator>();              mockManager.Setup(assetManager => assetManager.AddToQueue(It.IsAny<string>())).Returns(  new Models.ResponseMessage()  {   Status = "Success"  });   mockServiceLocator.Setup(x => x.GetInstance<IAssetManager>()).Returns(mockManager.Object); ServiceLocator.SetLocatorProvider(new ServiceLocatorProvider(() => mockServiceLocator.Object));   // do your tests..