import * as RecordsReducerModule from '../RecordsSlice';
import StateManager from '../../StateManager';
import { Record } from '../../../interfaces/dataUnit';
import { Action } from '../../action/DataUnitAction';

jest.spyOn(RecordsReducerModule, "getRecords").mockImplementation(() => [
    {
        __record__id__: '0',
    }, {
    __record__id__: '1',
    }]);

describe('RecordsSlice', () => {
    let stateManager: StateManager;
    let currentState: Array<Record>;
    
    beforeEach(() => {
        stateManager = new StateManager([RecordsReducerModule.RecordsReducer]);
        currentState = [{
            __record__id__: '0',
        }, {
        __record__id__: '1',
        }]
    });

    it('should return newlines at the end', () => {
        let records = RecordsReducerModule.RecordsReducer.reduce(stateManager, currentState, {
            type: Action.DATA_SAVED,
            payload: {
                records: [
                    {__record__id__: '0'},
                    {__record__id__: '2'},
                    {__record__id__: '1'},
                ]
            }
        })
        expect(records).toEqual([
            {__record__id__: '0'},
            {__record__id__: '1'},
            {__record__id__: '2'}
        ]);
    });

});