我是新的承诺,我有以下功能
var chai = require('chai');
var expect = chai.expect;
var chaiAsPromised = require('chai-as-promised');
chai.use(chaiAsPromised);
it('should do something with promises', function() {
var blah = 'foo';
var result = systemUnderTest();
return expect(result).to.eventually.equal(blah);
});
为什么之前有return
关键字expect
,它的意义是什么,如果我们不这样做会发生什么return