How to get an instance of IServiceProvider in .NET Core?

Question

IServiceProvider is an interface with single method:

object GetService(Type serviceType);

It\'s used to create instances of ty

Answer 1

As goaty mentioned it's enough to create new ServiceCollection. Here's example class which can be used to access DI container in .NET Core:

public static class ServiceProviderFactory
{
    public static IServiceProvider ServiceProvider { get; }

    static ServiceProviderFactory()
    {
        HostingEnvironment env = new HostingEnvironment();
        env.ContentRootPath = Directory.GetCurrentDirectory();
        env.EnvironmentName = "Development";

        Startup startup = new Startup(env);
        ServiceCollection sc = new ServiceCollection();
        startup.ConfigureServices(sc);
        ServiceProvider = sc.BuildServiceProvider();
    }
}

Startup class is taken from tested project so the service registrations don't need to be repeated.

Then in test class simply use:

var foo = ServiceProviderFactory.ServiceProvider.GetServices(typeof(IFoo));