[英]Record all remote calls in a nodejs express app for testing
我們的目標是進行API測試。 該測試是一種集成測試,它們使用整個中間件加載整個應用程序,並攔截外部http調用並進行記錄。
在Python世界中,為此存在“ WebTest”和“ VCRPY”。
該應用程序:
'use strict';
const express = require('express');
const request = require('superagent');
var app = express();
app.get('/hammer/version', function(req, res) {
request
.get('http://httpbin.org/get')
.end(function(err, response) {
console.log(response.body);
res.status(200).json({
version: '0.1.0',
url: response.body.url
});
});
});
module.exports = app;
考試:
/* global describe, it */
'use strict';
const request = require('supertest');
const app = require('./app.js');
var path = require('path');
var tape = require('tape');
var tapeNock = require('tape-nock');
// call tapeNock with tape and an options object
var test = tapeNock(tape, {
fixtures: path.join(__dirname, 'fixtures')
});
describe('Version test', function() {
this.timeout(0);
it('test version', function(done) {
test('record_version.json', function(t) {
request(app)
.get('/hammer/version')
.expect(200, {
url: "http://httpbin.org/get",
version: '0.1.0'
})
.end(function(err, res) {
if (err) return done(err);
t.end();
done();
});
});
});
});
“ package.json”:
{
"name": "remote_node_test",
"version": "1.0.0",
"description": "",
"main": "app.js",
"dependencies": {
"express": "^4.14.0",
"mocha": "^3.2.0",
"nock": "^9.0.2",
"superagent": "^3.3.1",
"supertest": "^2.0.1",
"tape": "^4.6.3",
"tape-nock": "^1.4.0"
},
"devDependencies": {
"mocha": "^3.2.0"
},
"scripts": {
"test": "mocha"
},
"author": "",
"license": "ISC"
}
該測試使用“ mocha”運行:
NOCK_BACK_MODE=record node_modules/mocha/bin/mocha
第一次運行有效,第二次“鎖定/記錄”運行不起作用。
錯誤:
% NOCK_BACK_MODE=lockdown node_modules/mocha/bin/mocha test.js :(
Version test
TAP version 13
# details.json
1) return current version
0 passing (32ms)
1 failing
1) Version test return current version:
TypeError: Cannot read property 'status' of undefined
at Test._assertStatus (node_modules/supertest/lib/test.js:263:10)
at Test._assertFunction (node_modules/supertest/lib/test.js:281:11)
at Test.assert (node_modules/supertest/lib/test.js:171:18)
at Server.assert (node_modules/supertest/lib/test.js:131:12)
at emitCloseNT (net.js:1553:8)
at _combinedTickCallback (internal/process/next_tick.js:71:11)
at process._tickCallback (internal/process/next_tick.js:98:9)
記錄的是所有請求,但我只需要記錄“外部”請求,並防止“模擬/記錄”我的內部邏輯。
如果您使用的是摩卡咖啡,則可能需要尋找特定於摩卡咖啡的類似nock / nockBack幫助器( https://www.npmjs.com/search?q=mocha+nock )
話雖這么說,您也可能會遇到問題,其中nockBack會對應用程序進行HTTP調用超級測試。
我舉了一個小例子,僅使用磁帶來完成您要完成的任務: https : //github.com/Flet/tape-nock-with-supertest-example
即使使用其他nockBack摩卡助手,setup-tape-nock.js中定義的afterRecord和before函數也可能是您需要的秘訣。
希望這可以幫助!
一種解決方案似乎是“ 重播 ”並配置對本地應用程序的請求的“ passThrough”。
/* global describe, it */
'use strict';
const request = require('supertest');
const app = require('./app.js');
var path = require('path');
const Replay = require('replay');
Replay.fixtures = __dirname + '/fixtures/replay';
Replay.passThrough('localhost', '127.0.0.1', '0.0.0.0');
describe('Version test', function() {
this.timeout(0);
it('test version', function(done) {
request(app)
.get('/hammer/version')
.expect(200, {
url: "http://httpbin.org/get",
version: '0.1.0'
})
.end(function(err, res) {
if (err) return done(err);
done();
});
});
});
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.