Jest mock dependencies

sampleApp.js

import ScheduleFactory from "./factory/services/schedule-factory.service";
import ScheduleManager from "./schedule-manager.service";

function SampleApp() {
    var appElement;
    function newScheduleHandler(pEvent) {
        var scheduleModel;
        Logger.info("New Schedule");
        if (!pEvent.data) {
            return;
        }
        scheduleModel = ScheduleFactory.prepareScheduleModel(pEvent.data, pEvent.filepath + "/");
        ScheduleManager.updateSchedule(scheduleModel);
    }

    function init() {
        ScheduleFactory;
    }
    return {
        init: init
    };
}

export default SampleApp;

sampleApp.mock.js

function ScheduleFactory() {
    return false;
}
module.exports = ScheduleFactory;

sampleApp.test.js

jest.mock('../src/js/factory/services/schedule-factory.service', ScheduleFactory => {
    return {
        prepareScheduleModel: jest.fn()
    }
});
import SampleApp from '../src/js/sampleApp';

test('sample App init', () => {
    expect(SampleApp().init()).toBe(false);
});