contiago-toolbar/app/containers/ToolbarContainer/tests/reducer.test.js

One of the options for outputting content from contiago xml-server

import { fromJS } from 'immutable';
import toolbarContainerReducer from '../reducer';

describe('toolbarContainerReducer', () => {
  it('returns the initial state', () => {
    expect(toolbarContainerReducer(undefined, {})).toEqual(fromJS({}));
  });
});