与守夜人和摩卡赛跑者的异步测试

Question

我试图用nightwatch.js和mocha runner定义一些测试.我想测试我的javascript库如何在不同的浏览器中工作.

我的代码非常简单,看起来就像那样

const expect = require('chai').expect;

describe('InfinitiSpec', function() {

  beforeEach((client, done) => {
    client.url(`file://${__dirname}/../../dist/index.html`);
    done();
  });

  after((client, done) => {
    client.end(() => done());
  });

  it('should be five', (client) => {
    client.execute(function() {
      // test javascript here
    }, [], () => {
      expect(2 + 2).to.equal(5)
    });
  });
});

我遇到的问题是,守夜人没有将done回调传递给测试,因此即使单个测试断言失败,测试本身仍然看起来像是成功的.

vladmiller:infiniti-tracking-evolution vladmiller$ nightwatch 


  InfinitiSpec
 ? AssertionError: expected 4 to equal 5
    at Object.<anonymous> (/Users/vladmiller/Projects/xxx/xxx/test/browser/infiniti.spec.js:18:24)
    at HttpRequest.<anonymous> (/usr/local/lib/node_modules/nightwatch/lib/index.js:322:20)
    at emitTwo (events.js:87:13)
    at HttpRequest.emit (events.js:172:7)
    at HttpRequest.<anonymous> (/usr/local/lib/node_modules/nightwatch/lib/index.js:351:15)
    at emitThree (events.js:97:13)
    at HttpRequest.emit (events.js:175:7)
    at IncomingMessage.<anonymous> (/usr/local/lib/node_modules/nightwatch/lib/http/request.js:155:16)
    at emitNone (events.js:72:20)
    at IncomingMessage.emit (events.js:166:7)
    ? should be five (3322ms)


  1 passing (3s)

如何使用nightwatch + mocha + chai测试异步javascript？也许人们可以推荐更好的堆栈来测试硒中的JS？谢谢

Answer 1

Nightwatch使用不支持异步测试的mocha修补版本.解决方案是使用标准的mocha,但相关文档(http://nightwatchjs.org/guide#using-the-standard-mocha)不完整,并且在该上下文中访问页面对象时会遇到麻烦.

花了一个小时试图用标准摩卡设置Nightwatch后,我决定回到普通的Selenium Webdriver.老实说,我并不后悔.

如果您想了解如何使用Selenium进行类似Nightwatch的Page对象的建议,请查看http://marmelab.com/blog/2016/04/19/e2e-testing-with-node-and-es6.html