Question

我正在尝试使用mocha和supertest在express中测试我的路线。不幸的是，我似乎无法测试我的重定向。

以下是相关代码

var should = require('should');
var request = require('supertest');
var app = require('../app');
describe('GET /',function() {
    it('should redirect to the login screen',function(done) {
        request(app)
            .get('/')
    .end(function(err,res) {
        if(err) {
            console.log("ERR: "+err);
            done(err);
        } else {
            console.log("RES:\n",res);
            res.headers.should.have.property('location','/login');
            done();
        }
    });
});

我的app.js有这个：

app.get('/', routes.index);

我的routes.index看起来像这样：

exports.index = function(req, res){
    if(!req.body.username) {
        res.redirect('/login');
    }
    res.render('index', { title: 'Express' });
};

我的登录页面是：

exports.login = function(req,res) {
    res.render('login',{title: 'Please login'});
};

运行测试时出现以下错误，这让我觉得它实际上运行了不止一次：

  collection router
    GET /
      ◦ should redirect to the login screen: GET / 302 221ms - 40b
      1) should redirect to the login screen
      2) should redirect to the login screen


  8 passing (281 ms)
  2 failing

  1) collection router GET / should redirect to the login screen:
     Error: done() called multiple times
      at multiple (development/git/ivorytower/node_modules/mocha/lib/runnable.js:175:31)
      at done (/development/git/ivorytower/node_modules/mocha/lib/runnable.js:181:26)
      at development/git/ivorytower/node_modules/mocha/lib/runnable.js:197:9
      at development/git/ivorytower/test/routes.js:15:4
      at Test.assert (development/git/ivorytower/node_modules/supertest/lib/test.js:190:3)
      at development/git/ivorytower/node_modules/supertest/lib/test.js:119:10
      at Test.Request.callback (development/git/ivorytower/node_modules/supertest/node_modules/superagent/lib/node/index.js:573:30)
      at Test.<anonymous> (development/git/ivorytower/node_modules/supertest/node_modules/superagent/lib/node/index.js:133:10)
      at Test.EventEmitter.emit (events.js:95:17)
      at IncomingMessage.<anonymous> (development/git/ivorytower/node_modules/supertest/node_modules/superagent/lib/node/index.js:703:12)
      at IncomingMessage.EventEmitter.emit (events.js:117:20)
      at _stream_readable.js:910:16
      at process._tickCallback (node.js:415:13)

  2) collection router GET / should redirect to the login screen:
     Error: done() called multiple times
      at multiple (development/git/ivorytower/node_modules/mocha/lib/runnable.js:175:31)
      at done (development/git/ivorytower/node_modules/mocha/lib/runnable.js:181:26)
      at development/git/ivorytower/node_modules/mocha/lib/runnable.js:197:9
      at development/git/ivorytower/test/routes.js:15:4
      at Test.assert (development/git/ivorytower/node_modules/supertest/lib/test.js:190:3)
      at development/git/ivorytower/node_modules/supertest/lib/test.js:119:10
      at Test.Request.callback (development/git/ivorytower/node_modules/supertest/node_modules/superagent/lib/node/index.js:573:30)
      at Test.<anonymous> (development/git/ivorytower/node_modules/supertest/node_modules/superagent/lib/node/index.js:133:10)
      at Test.EventEmitter.emit (events.js:95:17)
      at IncomingMessage.<anonymous> (development/git/ivorytower/node_modules/supertest/node_modules/superagent/lib/node/index.js:703:12)
      at IncomingMessage.EventEmitter.emit (events.js:117:20)
      at _stream_readable.js:910:16
      at process._tickCallback (node.js:415:13)



npm ERR! weird error 2
npm ERR! not ok code 0

我已经查看并发现了一些可能相关的错误，但它们已经差不多一年了，而且我遵循建议的解决方法无济于事： https://github.com/visionmedia/supertest/issues/11#issuecomment-20251424 以及express使用的测试套件： https://github.com/visionmedia/express/blob/master/test/res.redirect.js 我在这里不知所措。感谢

Answer 1

问题是我的路由器代码：

exports.index = function(req, res){
    if(!req.body.username) {
        res.redirect('/login');
    }
    res.render('index', { title: 'Express' });
};

应该是

exports.index = function(req, res){
    if(!req.body.username) {
        res.redirect('/login');
    } else {
        res.render('index', { title: 'Express' });
    }
};

所以响应是写入一个重定向，然后立即有一个模板呈现给它（如果我正确理解它）。 if / then / else块（或if块中的返回）修复了问题。

mocha / express / supertest：'错误：多次调用done（）'

1 个答案: