A minimal and unambitious library to help dependency injection in Xunit framework

This library leverages Xunit's fixture implementation to bring dependency injection to .net core test projects powered by Xunit.

Steps to activate dependency injection in Xunit test projects

1) Derive from DIFixture class

Simply create your own fixture and derive from DIFixture abstract class found in SimcoAI.Test.DependencyInjection namespace. The following example illustrates it:

public class MyTestFixture : DIFixture
{
   protected override void AddServices(IServiceCollection services)
   {
	services.Configure<MyOptions>(option => Configuration.GetSection("MyOptions").Bind(option));
	services.AddSingleton<IMyService, MyServiceImplementation>();
	services.AddScoped<IAnotherService, AnotherServiceImplementation>();
   }

   protected override string GetConfigurationFile()
	=> "appsettings.json";
}

MyOptions, IMyService, IAnotherService, MyServiceImplementation and AnotherServiceImplementation are interfaces and classes that we assumed they have pre-existed in this example.

2) Define the test fixture's collection

The following example illustrates how to assign a test collection to the fixture defined in the previous step:

[CollectionDefinition("my tests")]
public class MyTestCollection : ICollectionFixture<MyTestFixture>
{
}

3) Define test classes

Your test classes should derive from SimcoeAI.Test.TestsWithFixture class and it must be decorated by the right collection name. Example:

[CollectionDefinition("my tests")]
public class MyTestCollection : ICollectionFixture<MyTestFixture>
{
}