public class TestStartup
{
        public TestStartup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }
        
        public void ConfigureServices(IServiceCollection services)
        {
            var controllerAssembly = Assembly.GetAssembly(typeof(Controller))!;

              services.AddMvc().AddApplicationPart(controllerAssembly)
                               .AddControllersAsServices();
        }
        
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            app.UseRouting();
            
            app.UseEndpoints(e => e.MapControllers());
        }
}