integration helper

jest.mock('../../redux/API');
const combinedReducers = { notifications: notificationReducer, ...APIReducers };
const middlewares = [APIMiddleware]
const failResponse = { response: { status: 401 } };
const notificationProps = {
  data: componentMountData,
};

describe('Notification integration test', () => {
  it('should flow', () => {
    API.get.mockImplementation(() => serverResponse);
    const integrationTestHelper = new IntegrationTestHelper(combinedReducers, middlewares);
    integrationTestHelper.mount(
      <Notifications {...notificationProps} />
    );