How can I use IConfiguration from my integration tests?

Question

I have an API, and I\'m trying to make some integration tests for it with XUnit. Here\'s my API controller constructor:

public class MyController : Controlle         


        

Answer 1

I think it's better to use dependency injection in your test project; for future use.

In your test project:

1. Add a new appsettings.json file to your test project with all the configurations you need.
2. Install the package: Microsoft.Extensions.DependencyInjection.

3. Create a class for the test setup; for instance TestSetup.cs.

   public class TestSetup
   {
       public TestSetup()
       {
           var serviceCollection = new ServiceCollection();
           var configuration = new ConfigurationBuilder()
               .SetBasePath(Directory.GetCurrentDirectory())
               .AddJsonFile(
                    path: "appsettings.json",
                    optional: false,
                    reloadOnChange: true)
              .Build();
           serviceCollection.AddSingleton(configuration);
           serviceCollection.AddTransient();
   
           ServiceProvider = serviceCollection.BuildServiceProvider();
       }
   
       public ServiceProvider ServiceProvider { get; private set; }
   }
   

4. In your test class; I am using Xunit

   public class MyControllerTest: IClassFixture
   {
       private ServiceProvider _serviceProvider;
       private MyController _myController;
   
       public MyControllerTest(TestSetup testSetup)
       {
          _serviceProvider = testSetup.ServiceProvider;
          _myController = _serviceProvider.GetService();
       }
   
       [Fact]
       public async Task GetUserShouldReturnOk()
       {
           var result = await _myController.GetUser(userId);
           Assert.IsType(result);
       }
   
   }