text: import { fromJS } from 'immutable';
  
  import appReducer from '../reducer';
  import {
    loadRepos,
    reposLoaded,
    repoLoadingError,
  } from '../actions';
  
  describe('appReducer', () => {
    let state;
    beforeEach(() => {
      state = fromJS({
        loading: false,
        error: false,
      });
    });