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diff --git a/test/app/MainScreenWrapperReducer.test.js b/test/app/MainScreenWrapperReducer.test.js
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+++ b/test/app/MainScreenWrapperReducer.test.js
@@ -0,0 +1,486 @@
+import thunk from 'redux-thunk';
+import randstr from 'randomstring';
+import configureMockStore from 'redux-mock-store';
+
+import MainScreenWrapperReducer from 'app/MainScreenWrapperReducer'
+import {aaiActionTypes} from 'app/MainScreenWrapperConstants';
+import {getPersonalizationDetails} from 'app/personlaization/PersonalizationActions';
+import {getInvalidSearchInputEvent} from'app/globalAutoCompleteSearchBar/GlobalAutoCompleteSearchBarActions';
+import {extensibleViewNetworkCallback, showMainMenu, clearExtensibleViewData, setSecondaryTitle} from 'app/MainScreenWrapperActionHelper';
+import {externalUrlRequest, getSubscriptionPayload} from 'app/contextHandler/ContextHandlerActions'
+
+import {globalInlineMessageBarActionTypes} from "app/globalInlineMessageBar/GlobalInlineMessageBarConstants";
+import {globalAutoCompleteSearchBarActionTypes} from "app/globalAutoCompleteSearchBar/GlobalAutoCompleteSearchBarConstants";
+import {
+    contextHandlerActionTypes,
+    FAILED_REQUEST,
+    MULTIPLE_RESULT, SUBSCRIPTION_FAILED_MESSAGE,
+    WRONG_EXTERNAL_REQUEST_MESSAGE,
+    WRONG_RESULT,
+    ZERO_RESULT
+} from "app/contextHandler/ContextHandlerConstants";
+import {PERSONALIZATION_FAILED_MESSAGE, personalizationActionTypes} from "app/personlaization/PersonalizationConstans";
+
+describe('MainScreenWrapperReducerTests', () => {
+    fetch = require('jest-fetch-mock');
+    const mockStore = configureMockStore([thunk])();
+    const initialState = {Baz : 'Fooo'};
+    const error = '401';
+
+    beforeEach(() => {
+        fetch.resetMocks();
+        mockStore.clearActions();
+    });
+
+    describe('extensibleViewNetworkCallbackTests', () => {
+        const paramName = 'boo';
+        const postBody = 'baz';
+        const curView = {Boz : 'Fooz'};
+        const requestUrl = 'www.foo.com';
+        const response = {Foo: 'Bar'};
+        
+        describe('success tests', () => {
+            beforeEach(async () => {
+                //given
+                fetch.once(JSON.stringify(response));
+                await mockStore.dispatch(extensibleViewNetworkCallback(requestUrl, postBody, paramName, curView));
+            });
+
+            it('action on success test', () => {
+                //when
+                const [action, ...rest] = mockStore.getActions();
+
+                //then
+                expect(rest).toEqual([]);
+                expect(action.type).toBe(aaiActionTypes.EXTENSIBLE_VIEW_NETWORK_CALLBACK_RESPONSE_RECEIVED);
+            });
+
+            it('reducer on success test', () => {
+                //given
+                const [action, ..._] = mockStore.getActions();
+
+                //when
+                const {
+                    extensibleViewNetworkCallbackData,
+                    ...rest
+                } = MainScreenWrapperReducer(initialState, action);
+
+                //then
+                expect(rest).toEqual(initialState);
+                expect(extensibleViewNetworkCallbackData).toEqual({
+                    boo: response,
+                    ...curView
+                });
+            });
+        });
+
+        describe('failure tests', () => {
+            beforeEach(async () => {
+                //given
+                fetch.mockRejectOnce(error);
+                await mockStore.dispatch(extensibleViewNetworkCallback(requestUrl, postBody, paramName, curView));
+            });
+
+            it('action on failure test', () => {
+                //given
+                const [firstAction, secondAction, ...tail] = mockStore.getActions();
+
+                //then
+                expect(tail).toEqual([]);
+                expect(firstAction.type).toEqual(globalInlineMessageBarActionTypes.SET_GLOBAL_MESSAGE);
+                expect(secondAction.type).toEqual(aaiActionTypes.EXTENSIBLE_VIEW_NETWORK_CALLBACK_RESPONSE_RECEIVED);
+            });
+
+            it('reducer on failure test', () => {
+                //given
+                const [firstAction, secondAction, ..._] = mockStore.getActions();
+
+                //when
+                const afterFirstState = MainScreenWrapperReducer(initialState, firstAction);
+                const {
+                    extensibleViewNetworkCallbackData,
+                    ...rest
+                } = MainScreenWrapperReducer(initialState, secondAction);
+
+                //then
+                expect(afterFirstState).toEqual(initialState);
+                expect(rest).toEqual(initialState);
+                expect(extensibleViewNetworkCallbackData).toEqual({
+                    boo: {},
+                    ...curView
+                });
+            });
+        });
+    });
+
+    describe.each([true, false])('showMainMenuTests', value => {
+        beforeEach(async () => {
+            //given
+            await mockStore.dispatch(showMainMenu(value));
+        });
+
+        it('action on show: ' + value + ' test', () => {
+            //when
+            const [action, ...rest] = mockStore.getActions();
+
+            //then
+            expect(rest).toEqual([]);
+            expect(action.type).toBe(aaiActionTypes.AAI_SHOW_MENU);
+        });
+
+        it('reducer on show: ' + value + ' test', () => {
+            //given
+            const [action, ..._] = mockStore.getActions();
+
+            //when
+            const {
+                showMenu,
+                toggleButtonActive,
+                ...rest
+            } = MainScreenWrapperReducer(initialState, action);
+
+            //then
+            expect(rest).toEqual(initialState);
+            expect(showMenu).toBe(value);
+            expect(toggleButtonActive).toBe(value);
+        });
+    });
+
+    describe('clearExtensibleViewDataTests', () => {
+        beforeEach(async () => {
+            //given
+            await mockStore.dispatch(clearExtensibleViewData());
+        });
+
+        it('action test', () => {
+            //when
+            const [action, ...rest] = mockStore.getActions();
+
+            //then
+            expect(rest).toEqual([]);
+            expect(action.type).toBe(aaiActionTypes.EXTENSIBLE_VIEW_NETWORK_CALLBACK_CLEAR_DATA);
+        });
+
+        it('reducer test', () => {
+            //given
+            const [action, ..._] = mockStore.getActions();
+
+            //when
+            const {
+                extensibleViewNetworkCallbackData,
+                ...rest
+            } = MainScreenWrapperReducer(initialState, action);
+
+            expect(rest).toEqual(initialState);
+            expect(extensibleViewNetworkCallbackData).toEqual({});
+        });
+    });
+
+    describe('getInvalidSearchInputEventTests', () => {
+        const msg = randstr.generate();
+
+        beforeEach(async () => {
+            await mockStore.dispatch(getInvalidSearchInputEvent(msg));
+        });
+
+        it('action msg: ' + msg + ' test', () => {
+            //when
+            const [action, ...rest] = mockStore.getActions();
+
+            //then
+            expect(rest).toEqual([]);
+            expect(action.type).toBe(globalAutoCompleteSearchBarActionTypes.SEARCH_WARNING_EVENT);
+        });
+
+        it('reducer msg: ' + msg + ' test', () => {
+            //given
+            const [action, ..._] = mockStore.getActions();
+
+            //when
+            const {
+                extensibleViewNetworkCallbackData,
+                ...rest
+            } = MainScreenWrapperReducer(initialState, action);
+
+            //then
+            expect(rest).toEqual(initialState);
+            expect(extensibleViewNetworkCallbackData).toEqual({clearView : true});
+        });
+    });
+
+    describe('externalUrlRequestTests', () => {
+        const someUrlParams = 'view=A&entityId=B&entityType=C';
+
+        describe.each([{
+            title: 'on empty url params',
+            prepareMock: () => {},
+            urlParams: '',
+            expectedResponse: WRONG_EXTERNAL_REQUEST_MESSAGE
+        }, {
+            title: 'on request rejected by the server',
+            prepareMock: () => fetch.mockRejectOnce('401'),
+            urlParams: someUrlParams,
+            expectedResponse: FAILED_REQUEST
+        }, {
+            title: 'on empty suggestions',
+            prepareMock: () => fetch.once(JSON.stringify({})),
+            urlParams: someUrlParams,
+            expectedResponse: WRONG_RESULT
+        }, {
+            title: 'on no results',
+            prepareMock: () => fetch.once(JSON.stringify({totalFound: 0, suggestions: []})),
+            urlParams: someUrlParams,
+            expectedResponse: ZERO_RESULT
+        }, {
+            title: 'on multiple results',
+            prepareMock: () => fetch.once(JSON.stringify({totalFound: 2, suggestions: ['Foo', 'Bar']})),
+            urlParams: someUrlParams,
+            expectedResponse: MULTIPLE_RESULT
+        }])('failure tests', ({title, prepareMock, urlParams, expectedResponse}) => {
+            beforeEach(async () => {
+                //given
+                prepareMock();
+                await mockStore.dispatch(externalUrlRequest(urlParams));
+            });
+
+            it('action ' + title + ' test', () => {
+                //when
+                const [action, ...rest] = mockStore.getActions();
+
+                //then
+                expect(rest).toEqual([]);
+                expect(action.type).toBe(globalInlineMessageBarActionTypes.SET_GLOBAL_MESSAGE);
+                expect(action.data.msgText).toEqual(expectedResponse);
+            });
+
+            it('reducer ' + title + ' test', () => {
+                //given
+                const [action, ..._] = mockStore.getActions();
+
+                //when
+                const state = MainScreenWrapperReducer(initialState, action);
+
+                //then
+                expect(state).toEqual(initialState);
+            });
+        });
+
+        describe("success tests", () => {
+            //given
+            const response = {totalFound: 1, suggestions: ['Foo']};
+
+            beforeEach(async () => {
+                //given
+                fetch.resetMocks();
+                fetch.once(JSON.stringify(response));
+
+                await mockStore.dispatch(externalUrlRequest(someUrlParams));
+            });
+
+            it('action on exactly one suggestion test', () => {
+                //when
+                const [firstAction, secondAction, ...rest] = mockStore.getActions();
+
+                //then
+                expect(rest).toEqual([]);
+                expect(firstAction.type).toBe( globalInlineMessageBarActionTypes.CLEAR_GLOBAL_MESSAGE);
+                expect(secondAction.type).toBe(contextHandlerActionTypes.SINGLE_SUGGESTION_FOUND);
+            });
+
+            it('reducer on exactly one suggestion test', () => {
+                //given
+                const [firstAction, secondAction, ..._] = mockStore.getActions();
+
+                //when
+                const state = MainScreenWrapperReducer(initialState, firstAction);
+                const {
+                    externalRequestFound,
+                    ...rest
+                } = MainScreenWrapperReducer(state, secondAction);
+
+                //then
+                expect(state).toEqual(initialState);
+                expect(rest).toEqual(initialState);
+                expect(externalRequestFound).toEqual({suggestion: response.suggestions[0]});
+            });
+        });
+    });
+
+    describe('setSecondaryTitleTests', () => {
+        //given
+        const title = randstr.generate();
+
+        beforeEach(async () => {
+            //given
+            await mockStore.dispatch(setSecondaryTitle(title));
+        });
+
+        it('action test', () => {
+            //when
+            const [action, ...rest] = mockStore.getActions();
+
+            //then
+            expect(rest).toEqual([]);
+            expect(action.type).toBe(aaiActionTypes.SET_SECONDARY_TITLE);
+        });
+
+        it('reducer test', () => {
+            //given
+            const [action, ..._] = mockStore.getActions();
+
+            //when
+            const {
+                secondaryTitle,
+                ...rest
+            } = MainScreenWrapperReducer(initialState, action);
+
+             //then
+            expect(rest).toEqual(initialState);
+            expect(secondaryTitle).toEqual(title);
+        });
+    });
+
+    describe('getSubscriptionPayloadTests', () => {
+        describe('failure tests', () => {
+            beforeEach(async () => {
+                //given
+                fetch.mockRejectOnce(error);
+                await mockStore.dispatch(getSubscriptionPayload());
+            });
+
+            it('action on request rejected by server test', async () => {
+                //when
+                const [action, ...rest] = mockStore.getActions();
+
+                //then
+                expect(rest).toEqual([]);
+                expect(action.type).toBe(globalInlineMessageBarActionTypes.SET_GLOBAL_MESSAGE);
+                expect(action.data.msgText).toEqual(SUBSCRIPTION_FAILED_MESSAGE);
+            });
+
+            it('reducer on request rejected by server test', async () => {
+                //given
+                const [action, ..._] = mockStore.getActions();
+
+                //when
+                const state = MainScreenWrapperReducer(initialState, action);
+
+                //then
+                expect(state).toEqual(initialState);
+            });
+        });
+
+        const subscriptionData = 'Foo';
+
+        describe.each([{
+            title: 'on disabled subscription',
+            payload: {subscriptionEnabled: false},
+            type: contextHandlerActionTypes.SUBSCRIPTION_PAYLOAD_EMPTY,
+            detail : undefined
+        }, {
+            title: 'on enabled subscription',
+            payload: {subscriptionEnabled: true, subscriptionDetails: subscriptionData},
+            type: contextHandlerActionTypes.SUBSCRIPTION_PAYLOAD_FOUND,
+            detail : subscriptionData
+        }])('success tests', ({title, payload, type, detail}) => {
+            beforeEach(async () => {
+                //given
+                fetch.once(JSON.stringify(payload));
+                await mockStore.dispatch(getSubscriptionPayload());
+            });
+
+            it('action ' + title + ' test', () => {
+                //when
+                const [action, ...rest] = mockStore.getActions();
+
+                //then
+                expect(rest).toEqual([]);
+                expect(action.type).toBe(type);
+            });
+
+            it('reducer '  + title + '  test', () => {
+                //given
+                const [action, ..._] = mockStore.getActions();
+
+                //when
+                const {
+                    subscriptionEnabled,
+                    subscriptionPayload,
+                    ...rest
+                } = MainScreenWrapperReducer(initialState, action);
+
+                //then
+                expect(rest).toEqual(initialState);
+                expect(subscriptionEnabled).toBe(payload.subscriptionEnabled);
+                expect(subscriptionPayload).toEqual(detail);
+            });
+        });
+    });
+
+    describe("getPersonalizationDetailsTests", () => {
+        describe('failure tests', () => {
+            beforeEach(async () => {
+                //given
+                fetch.mockRejectOnce(error);
+                await mockStore.dispatch(getPersonalizationDetails());
+            });
+
+            it('action on request rejected by server test', () => {
+                //when
+                const [action, ...rest] = mockStore.getActions();
+
+                //then
+                expect(rest).toEqual([]);
+                expect(action.type).toBe(globalInlineMessageBarActionTypes.SET_GLOBAL_MESSAGE);
+                expect(action.data.msgText).toEqual(PERSONALIZATION_FAILED_MESSAGE);
+            });
+
+            it('reducer on request rejected by server test', () => {
+                //given
+                const [action, ..._] = mockStore.getActions();
+
+                //when
+                const state = MainScreenWrapperReducer(initialState, action);
+
+                //then
+                expect(state).toEqual(initialState);
+            });
+        });
+
+        describe('success tests', () => {
+            const personalizationPayload = {topLeftHeader: 'Foo', htmlDocumentTitle: 'Bar'};
+
+            beforeEach(async () => {
+                //given
+                fetch.once(JSON.stringify(personalizationPayload));
+                await mockStore.dispatch(getPersonalizationDetails());
+            });
+
+            it('action on personalization payload found test', () => {
+                //when
+                const [action, ...rest] = mockStore.getActions();
+
+                //then
+                expect(rest).toEqual([]);
+                expect(action.type).toBe(personalizationActionTypes.PERSONALIZATION_PAYLOAD_FOUND);
+            });
+
+            it("Reducer on personalization payload found test", async () => {
+                //given
+                const [action, ..._] = mockStore.getActions();
+
+                //when
+                const {
+                    aaiTopLeftPersonalizedHeader,
+                    aaiPersonalizedHtmlDocumentTitle,
+                    ...rest
+                } = MainScreenWrapperReducer(initialState, action);
+
+                //then
+                expect(rest).toEqual(initialState);
+                expect(aaiTopLeftPersonalizedHeader).toEqual(personalizationPayload.topLeftHeader);
+                expect(aaiPersonalizedHtmlDocumentTitle).toEqual(personalizationPayload.htmlDocumentTitle);
+            });
+        });
+    });
+});