OpenAuth.Net/OpenAuth.WebApi/Test/AutofacWebApplicationFactory.cs

using Microsoft.AspNetCore.Mvc.Testing;
using Microsoft.Extensions.Hosting;

namespace OpenAuth.WebApi.Test
{
    /// <summary>
    /// Based upon https://github.com/dotnet/AspNetCore.Docs/tree/master/aspnetcore/test/integration-tests/samples/3.x/IntegrationTestsSample
    /// </summary>
    /// <typeparam name="TStartup"></typeparam>
    public class AutofacWebApplicationFactory<TStartup> : WebApplicationFactory<TStartup> where TStartup : class
    {
        protected override IHost CreateHost(IHostBuilder builder)
        {
            builder.UseServiceProviderFactory(new CustomServiceProviderFactory());
            return base.CreateHost(builder);
        }
    }
}