connect-prism/test/integration/proxy-spec.js

Record, mock, and proxy HTTP traffic.

'use strict';

var assert = require('assert');
var connect = require('connect');
var http = require('http');
var querystring = require('querystring');

var prism = require('../../');
var testUtils = require('../test-utils');
var httpGet = testUtils.httpGet;
var httpPost = testUtils.httpPost;

describe('proxy mode', function() {
  var manager = prism.manager;

  afterEach(function() {
    manager.reset();
  });

  it('can proxy a response', function(done) {
    prism.create({
      name: 'proxyTest',
      mode: 'proxy',
      context: '/test',
      host: 'localhost',
      port: 8090
    });

    httpGet('/test').then(function(res) {
      assert.equal(res.body, 'a server response');
      done();
    });
  });

  it('can proxy requests using custom headers', function(done) {
    prism.create({
      name: 'proxyHeaderTest',
      mode: 'proxy',
      context: '/test',
      host: 'localhost',
      port: 8090,
      headers: {
        'x-proxied-header': 'added'
      }
    });

    httpGet('/test').then(function(res) {
      assert.equal(res.body, 'a server response with proxied header value of "added"');
      done();
    });
  });

  it('can proxy a post response', function(done) {
    prism.create({
      name: 'proxyPostTest',
      mode: 'proxy',
      context: '/test_post',
      host: 'localhost',
      hashFullRequest: true,
      port: 8090
    });

    var postData = querystring.stringify({ 'foo': 'bar' });

    httpPost('/test_post', postData).then(function(res) {
      assert.equal(res.statusCode, 200);
      assert.equal(res.body, 'bar');
      done();
    });
  });

  it('can delay a proxied response by approximately 50ms', function(done) {
    prism.create({
      name: 'proxyDelayTest',
      mode: 'proxy',
      context: '/test',
      host: 'localhost',
      port: 8090,
      delay: 50
    });

    var startTime = Date.now();
    httpGet('/test').then(function(res) {
      var delta = Date.now() - startTime;
      assert.equal(delta > 30, true);
      assert.equal(delta < 70, true);
      done();
    });
  });

  it('can rewrite a request', function(done) {
    prism.create({
      name: 'rewriteTest',
      mode: 'proxy',
      context: '/test',
      host: 'localhost',
      port: 8090,
      rewrite: {
        '^/test': '/rewrite',
      }
    });

    httpGet('/test').then(function(res) {
      assert.equal(res.body, 'a rewritten server response');
      done();
    });
  });
});