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import deepFreeze from 'deep-freeze';
import { serialize, deserialize } from 'calypso/state/utils';
import {
activePromotionsReceiveAction,
activePromotionsRequestSuccessAction,
activePromotionsRequestFailureAction,
requestActivePromotions,
} from '../actions';
import activePromotionsReducer, {
items as itemsReducer,
requesting as requestReducer,
error as errorReducer,
} from '../reducer';
import { WPCOM_RESPONSE } from './fixture';
describe( 'reducer', () => {
jest.spyOn( console, 'warn' ).mockImplementation();
test( 'should export expected reducer keys', () => {
expect( Object.keys( activePromotionsReducer( undefined, {} ) ) ).toEqual(
expect.arrayContaining( [ 'items', 'requesting', 'error' ] )
);
} );
describe( '#items()', () => {
test( 'should default to an empty Array', () => {
expect( itemsReducer( undefined, [] ) ).toEqual( [] );
} );
test( 'should index items state', () => {
const initialState = undefined;
const activePromotions = WPCOM_RESPONSE;
const action = activePromotionsReceiveAction( activePromotions );
const expectedState = activePromotions;
deepFreeze( expectedState );
const newState = itemsReducer( initialState, action );
expect( newState ).toEqual( expectedState );
} );
test( 'should override activePromotions', () => {
const activePromotions = WPCOM_RESPONSE;
const initialState = activePromotions;
const action = activePromotionsReceiveAction( activePromotions );
const expectedState = activePromotions;
deepFreeze( initialState );
deepFreeze( expectedState );
const newState = itemsReducer( initialState, action );
expect( newState ).toEqual( expectedState );
} );
test( 'should handle non-array response', () => {
const initialState = WPCOM_RESPONSE;
const action = activePromotionsReceiveAction( {} );
const newState = itemsReducer( initialState, action );
expect( newState ).toEqual( [] );
} );
test( 'should persist state', () => {
const activePromotions = WPCOM_RESPONSE;
const initialState = activePromotions;
const expectedState = activePromotions;
deepFreeze( initialState );
deepFreeze( expectedState );
const newState = serialize( itemsReducer, initialState );
expect( newState ).toEqual( expectedState );
} );
test( 'should load persisted state', () => {
const activePromotions = WPCOM_RESPONSE;
const initialState = activePromotions;
const expectedState = activePromotions;
deepFreeze( initialState );
deepFreeze( expectedState );
const newState = deserialize( itemsReducer, initialState );
expect( newState ).toEqual( expectedState );
} );
test( 'should not load invalid persisted state', () => {
// each entry should be `string`
const activePromotions = [ 1234 ];
const initialState = activePromotions;
deepFreeze( initialState );
const expectedState = [];
deepFreeze( expectedState );
const newState = deserialize( itemsReducer, initialState );
expect( newState ).toEqual( expectedState );
} );
} );
describe( '#requesting()', () => {
test( 'should return FALSE when initial state is undefined and action is unknown', () => {
expect( requestReducer( undefined, {} ) ).toEqual( false );
} );
test( 'should return TRUE when initial state is undefined and action is REQUEST', () => {
const initialState = undefined;
const action = requestActivePromotions();
const expectedState = true;
deepFreeze( expectedState );
const newState = requestReducer( initialState, action );
expect( newState ).toEqual( expectedState );
} );
test( 'should update `requesting` state on SUCCESS', () => {
const initialState = true;
const action = activePromotionsRequestSuccessAction();
const expectedState = false;
deepFreeze( initialState );
deepFreeze( expectedState );
const newState = requestReducer( initialState, action );
expect( newState ).toEqual( expectedState );
} );
test( 'should update `requesting` state on FAILURE', () => {
const initialState = true;
const action = activePromotionsRequestFailureAction();
const expectedState = false;
deepFreeze( initialState );
deepFreeze( expectedState );
const newState = requestReducer( initialState, action );
expect( newState ).toEqual( expectedState );
} );
} );
describe( '#errors()', () => {
test( 'should return FALSE when initial state is undefined and action is unknown', () => {
expect( errorReducer( undefined, {} ) ).toEqual( false );
} );
test( 'should set `error` state to TRUE on FAILURE', () => {
const initialState = undefined;
const action = activePromotionsRequestFailureAction();
const expectedState = true;
deepFreeze( expectedState );
const newState = errorReducer( initialState, action );
expect( newState ).toEqual( expectedState );
} );
test( 'should set `error` state to FALSE on REQUEST', () => {
const initialState = true;
const action = requestActivePromotions();
const expectedState = false;
deepFreeze( initialState );
deepFreeze( expectedState );
const newState = errorReducer( initialState, action );
expect( newState ).toEqual( expectedState );
} );
test( 'should set `error` state to FALSE on SUCCESS', () => {
const initialState = true;
const action = activePromotionsRequestSuccessAction();
const expectedState = false;
deepFreeze( initialState );
deepFreeze( expectedState );
const newState = errorReducer( initialState, action );
expect( newState ).toEqual( expectedState );
} );
} );
} );
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