text: 'use strict';
  
  import {expect} from 'chai';
  import whatsme from '../src/index';
  
  describe('isNull', function() {
    it('isNull', async function() {
      expect(whatsme.isNull(null)).to.be.true;
      expect(whatsme.isNull(false)).to.be.false;
      expect(whatsme.isNull('')).to.be.false;
      expect(whatsme.isNull(undefined)).to.be.false;
    });
  });
  