public void RegisterAppConfigurationProviderFactory()
        {
            var serviceCollection = new ServiceCollection();
            var builder           = new OcelotBuilder(serviceCollection, new ConfigurationBuilder().Build());

            builder.AddAppConfiguration();

            ServiceDiscoveryFinderDelegate factory = serviceCollection
                                                     .BuildServiceProvider()
                                                     .GetService <ServiceDiscoveryFinderDelegate>();

            factory.Should().NotBeNull();
        }