Node.js/Express/Mocha/Supertest Rest API - 空请求正文

Question

我到处寻找可以找到解决方案.我发现的唯一一件事是没有回复的帖子.如果我忽略了某些事情,我会道歉.

问题是,当我尝试获取API中的POST值时/createQuestion,正文是空的/未定义的.我Cannot read proprety 'question' of undefined从API 那里得到这样的错误.

Express API:

app.post("/createQuestion", function(req, res) {
    var questionType = req.body.question.type;
    var questionText = req.body.question.text;
    var questionDuringClass = req.body.question.duringClass;

    // Do a bunch of stuff

    res.send(response);
});

考试:

    var should = require('should'); 
    var assert = require('assert');
    var request = require('supertest');  
    var winston = require('winston');

    request = request('http://localhost:8080');

        describe('Questions', function() { // Test suite
            before(function(done) {
                done();
            });

        it('Should create a freeResponse question', function(done) { // Test case
        var postData = {
            "question" : {
                "type" : "freeResponse",
                "text" : "This is a test freeResponse question (automated testing)",
                "duringClass" : "1"
            }
        };

        request()
        .post('/createQuestion')
        .send(postData)
        .expect(200)
        .end(function(err, res) { // .end handles the response
            if (err) {
                return done(err);
            }

            done();
        });
    });

 it('Should delete a freeResponse question', function(done) { // Test case
        var postData = {
            "question" : {
                "type" : "freeResponse",
                "text" : "This is a test freeResponse question (automated testing)",
                "duringClass" : "1"
            }
        };

        request()
        .post('/deleteQuestion')
        .send(postData)
        .expect(200)
        .end(function(err, res) { // .end handles the response
            if (err) {
                return done(err);
            }

            done();
        });
    });

我错过了什么？是以不同的格式.send()发送POST数据吗？这不是POST请求的主体吗？

Answer 1

您的应用可能没有使用bodyParser中间件.

app.use(express.bodyParser());

来自expressjs文档:

req.body

此属性是包含已解析请求正文的对象.此功能由bodyParser()中间件提供,但其他正文解析中间件也可遵循此约定.使用bodyParser()时,此属性默认为{}.

这里有一个完整的例子

var express = require('express');
var request = require('supertest');

var assert = require('assert');
var app = express();

app.use(express.bodyParser());
app.get('/', function(req, res) {
  res.send('ok');
});

app.post('/createQuestion', function(req, res) {
  var message = req.body.partA + ' ' + req.body.partB;
  res.send(message);
});

describe('testing a simple application', function() {
  it('should return code 200', function(done) {
    request(app)
      .get('/')
      .expect(200)
      .end(function(err, res){
        if(err) {
          done(err);
        } else {
          done();
        }
      });
  });

  it('should return the same sent params concatenated', function(done) {
    request(app)
      .post('/createQuestion')
      .send({ partA: 'Hello', partB: 'World'})
      .expect(200, 'Hello World')
      .end(function(err, res){
        if(err) {
          done(err);
        } else {
          done();
        }
      });
  });

});