学习 TDD 和我对“Hello World”服务器响应的第一个简单测试在 Mocha 中失败了。我正在使用 Mocha.js、Superagent 和 Expect.js。
当 I 时curl -i localhost:8080
,我得到正确的响应和状态码。
HTTP/1.1 200 OK
Content-Type: text/plain
Date: Mon, 27 Apr 2015 17:55:36 GMT
Connection: keep-alive
Transfer-Encoding: chunked
Hello World
测试代码:
var request = require('superagent');
var expect = require('expect.js');
// Test structure
describe('Suite one', function(){
it("should get a response that contains World",function(done){
request.get('localhost:8080').end(function(res){
// TODO check that response is okay
expect(res).to.exist;
expect(res.status).to.equal(200);
expect(res.body).to.contain('World');
done();
});
});
});
服务器代码:
var server = require('http').createServer(function(req, res){
res.writeHead(200, {"Content-Type":"text/plain"});
res.end('Hello World\n');
});
server.listen(8080, function(){
console.log("Server listening at port 8080");
});
摩卡输出:
Suite one
1) should get a response that contains World
0 passing (110ms)
1 failing
1) Suite one should get a response that contains World:
Uncaught TypeError: Cannot read property 'status' of null
at test.js:10:23
at _stream_readable.js:908:16
我试过用谷歌搜索这个问题,但没有找到我做错了什么。