text: import { fromJS } from 'immutable';
  
  import languageProviderReducer from '../reducer';
  import CHANGE_LOCALE from '../constants';
  
  describe('languageProviderReducer', () => {
    it('returns the initial state', () => {
      expect(languageProviderReducer(undefined, {})).toEqual(
        fromJS({
          locale: 'en',
        }),
      );
    });
  
    it('changes the locale', () => {
      expect(
        languageProviderReducer(undefined, {
          type: CHANGE_LOCALE,
          locale: 'de',
        }).toJS(),
      ).toEqual({
        locale: 'de',
      });
    });
  });
  