netwerk/test/unit/test_cache_204_response.js

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 /*
   7 Test if 204 response is cached.
   8 1. Make first http request and return a 204 response.
   9 2. Check if the first response is not cached.
  10 3. Make second http request and check if the response is cached.
  11
  12 */
  13
  14 "use strict";
  15
  16 const { HttpServer } = ChromeUtils.importESModule(
  17   "resource://testing-common/httpd.sys.mjs"
  18 );
  19
  20 function test_handler(metadata, response) {
  21   response.setHeader("Content-Type", "text/html", false);
  22   response.setHeader("Cache-control", "max-age=9999", false);
  23   response.setStatusLine(metadata.httpVersion, 204, "No Content");
  24 }
  25
  26 function make_channel(url) {
  27   let channel = NetUtil.newChannel({
  28     uri: url,
  29     loadUsingSystemPrincipal: true,
  30   }).QueryInterface(Ci.nsIHttpChannel);
  31   return channel;
  32 }
  33
  34 async function get_response(channel, fromCache) {
  35   return new Promise(resolve => {
  36     channel.asyncOpen(
  37       new ChannelListener((request, buffer, ctx, isFromCache) => {
  38         Assert.equal(
  39           fromCache,
  40           isFromCache,
  41           `got response from cache = ${fromCache}`
  42         );
  43         resolve();
  44       })
  45     );
  46   });
  47 }
  48
  49 async function stop_server(httpserver) {
  50   return new Promise(resolve => {
  51     httpserver.stop(resolve);
  52   });
  53 }
  54
  55 add_task(async function () {
  56   let httpserver = new HttpServer();
  57   httpserver.registerPathHandler("/testdir", test_handler);
  58   httpserver.start(-1);
  59   const PORT = httpserver.identity.primaryPort;
  60   const URI = `http://localhost:${PORT}/testdir`;
  61
  62   await get_response(make_channel(URI, "GET"), false);
  63   await get_response(make_channel(URI, "GET"), true);
  64
  65   await stop_server(httpserver);
  66 });