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import { assert } from 'chai';import gplay from '../index.js';import * as R from 'ramda';
describe('Categories method', () => {  it('should fetch valid list of categories', () => {    return gplay.categories().then(categories => {      assert.isArray(categories);      assert.isTrue(categories.length > 0);    });  });
  it('should have all categories from constant list of categories', () => {    return gplay.categories().then(categories => {      const categoriesConst = Object.keys(gplay.category);      assert.deepEqual(        R.difference(categories, categoriesConst),        [],        'Google Play has categories that are not in "category" constant'      );    });  });});