Unit Testing

[prithvisinha]

Hi,
I have been a CSLA user since v3.0 and have used it upto v4.0 but have been not in touch for the past 1-2 years.
Coming back to my query, I have download the v5.2 and am able to run the projecttracker sample.
But I am unable to unit test the business objects (projectedit, projectlist).

What is the right approach to do so and what methods is everyone else using.
Any sample code would be a great help.

Thanks
Prithvi

[rockfordlhotka]

The answer depends (can you tell I work in consulting? 😉) on exactly what you mean by "unit testing".

"Real" unit testing generally won't test domain types, because you should be testing your business rule types, and maybe testing to ensure that the right rules are being associated with various properties of your domain class.

Determining whether a rule is associated with a property can be done without invoking the properties, because you can interrogate the rules engine to see which rules are associated with each property.

What most people actually do is some level of "integration testing", where they create an instance of a domain type, reading/writing properties, and checking the result. This actually is a long way from unit testing, because this sort of testing invokes the data portal, probably invokes persistence, and also invokes business rules - but within the context of simulated UI binding.

The way you implement unit testing is different from integration testing. And even within integration testing, there are various levels of abstraction/complexity you can choose - ranging from high level testing, down to very sophisticated mocking of things like the data portal.

[prithvisinha]

Even I am using the same approach but still no joy.

 [TestFixture]
    public class BaseClass
    {
        public static IServiceProvider ServiceProvider { get; set; }

        [OneTimeSetUp]
        public static void AssemblyInit()
        {
            // basically a "app builder" implementation
            var serviceCollection = new ServiceCollection();
            serviceCollection.AddCsla();
            serviceCollection.AddDalMock();

            serviceCollection.AddScoped((c) =>
                Startup.LoadAppConfiguration(Array.Empty<string>()));
            var startup = ActivatorUtilities.CreateInstance<Startup>(
                serviceCollection.BuildServiceProvider(), Array.Empty<object>());
            startup.ConfigureServices(serviceCollection);
            ServiceProvider = serviceCollection.BuildServiceProvider();
            startup.Configure();
        }
    }

public class Startup
    {
        /// <summary>
        /// Load app configuration via ConfigurationBuilder
        /// </summary>
        /// <returns>App configuration</returns>
        public static IConfiguration LoadAppConfiguration(string[] args)   {
            return new ConfigurationBuilder().AddInMemoryCollection().Build();
        }

        /// <summary>
        /// Creates instance of type, getting services via DI
        /// </summary>
        /// <param name="config">App configuration</param>
        public Startup(IConfiguration config)    {
            Configuration = config;
        }

        public IConfiguration Configuration { get; }

        /// <summary>
        /// This method gets called by the runtime. 
        /// Use this method to add services to the container.
        /// </summary>
        /// <param name="services">Service collection</param>
        public void ConfigureServices(IServiceCollection services)
        {   }

        /// <summary>
        /// This method gets called by the runtime. 
        /// Use this method to configure the app.
        /// </summary>
        public void Configure()      {
            CslaConfiguration.Configure().PropertyChangedMode(Csla.ApplicationContext.PropertyChangedModes.Windows)
                .DataPortal().DefaultProxy(typeof(Csla.DataPortalClient.HttpProxy),
                    "http://localhost:8040/api/dataportal/");
        }
    }

[rockfordlhotka]

Have you set a breakpoint in your AssemblyInit method to make sure it is being called? I think that method is supposed to accept a TestContext parameter?

[prithvisinha]

Have you set a breakpoint in your AssemblyInit method to make sure it is being called? I think that method is supposed to accept a TestContext parameter?

It is being called.
I am using nunit and a method with [OneTimeSetUp] attribute cant have any parameters.

Fetch method is not getting called but strangely if it run the whole project everything works smoothly

[rockfordlhotka]

You might try explicitly setting the service provider in CSLA so it can use the provider.

      Csla.Configuration.CslaConfiguration.Configure()
        .ServiceProviderScope(ServiceProvider);

[prithvisinha]

Well, I finally got it working.
Removed all csla.configuration parts from code. I am still trying to understand as to how it works
@rockfordlhotka your views on this are needed

I am describing the steps.

1. Add a new Nunit .net core project to the projecttracker solution
2. Add Microsoft.AspNetCore.TestHost to the UnitTest Project
3. Create a new class and add this code.

using System.Net.Http;
using ProjectTracker.AppServerCore;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.TestHost;
using NUnit.Framework;

[SetUpFixture]
public class RunOnce
{
[OneTimeSetUp]
public static void AssemblyInit()
{
var server = new TestAppServer();
}
}

public class TestAppServer
{
private readonly HttpClient _client;

public TestAppServer()
{
    var server = new TestServer(new WebHostBuilder()
        .UseEnvironment("Development")
        .UseStartup<Startup>());
    _client = server.CreateClient();
}

}`

The above code shouldn't be in any namespace.

[Chicagoan2016]

@rockfordlhotka , agree about the integration testing part, my unit tests are technically integration tests.