public virtual void Initialize()
        {
            Services = new ServiceCollection();
            Services.AddSingleton(new BotSettings());
            Services.AddSingleton(new BotServices()
            {
                // Non US languages are empty as Dispatch/LUIS not required for localization tests.
                CognitiveModelSets = new Dictionary <string, CognitiveModelSet>
                {
                    {
                        "en-us", new CognitiveModelSet
                        {
                            DispatchService = DispatchTestUtil.CreateRecognizer(),
                            LuisServices    = new Dictionary <string, LuisRecognizer>
                            {
                                { "General", GeneralTestUtil.CreateRecognizer() }
                            },
                            QnAConfiguration = new Dictionary <string, Microsoft.Bot.Builder.AI.QnA.QnAMakerEndpoint>
                            {
                                {
                                    "Chitchat", new QnAMakerEndpoint
                                    {
                                        KnowledgeBaseId = _knowledgeBaseId,
                                        EndpointKey     = _endpointKey,
                                        Host            = _hostname
                                    }
                                }
                            }
                        }
                    },
                    {
                        "zh-cn", new CognitiveModelSet {
                        }
                    },
                    {
                        "fr-fr", new CognitiveModelSet {
                        }
                    },
                    {
                        "es-es", new CognitiveModelSet {
                        }
                    },
                    {
                        "de-de", new CognitiveModelSet {
                        }
                    },
                    {
                        "it-it", new CognitiveModelSet {
                        }
                    }
                }
            });

            Services.AddSingleton <IBotTelemetryClient, NullBotTelemetryClient>();
            Services.AddSingleton(new MicrosoftAppCredentials("appId", "password"));
            Services.AddSingleton(new UserState(new MemoryStorage()));
            Services.AddSingleton(new ConversationState(new MemoryStorage()));

            // For localization testing
            CultureInfo.CurrentUICulture = new CultureInfo("en-us");

            var localizedTemplates = new Dictionary <string, string>();
            var templateFile       = "AllResponses";
            var supportedLocales   = new List <string>()
            {
                "en-us", "de-de", "es-es", "fr-fr", "it-it", "zh-cn"
            };

            foreach (var locale in supportedLocales)
            {
                // LG template for en-us does not include locale in file extension.
                var localeTemplateFile = locale.Equals("en-us")
                    ? Path.Combine(".", "Responses", $"{templateFile}.lg")
                    : Path.Combine(".", "Responses", $"{templateFile}.{locale}.lg");

                localizedTemplates.Add(locale, localeTemplateFile);
            }

            TestLocaleTemplateManager = new LocaleTemplateManager(localizedTemplates, "en-us");
            Services.AddSingleton(TestLocaleTemplateManager);

            Services.AddTransient <MockMainDialog>();
            Services.AddTransient <OnboardingDialog>();
            Services.AddTransient <SwitchSkillDialog>();
            Services.AddTransient <List <SkillDialog> >();
            Services.AddSingleton <TestAdapter, DefaultTestAdapter>();
            Services.AddTransient <IBot, DefaultActivityHandler <MockMainDialog> >();

            TestUserProfileState      = new UserProfileState();
            TestUserProfileState.Name = "Bot";
        }