gecko-dev/netwerk/test/unit/test_cache_204_response.js

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JavaScript

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
Test if 204 response is cached.
1. Make first http request and return a 204 response.
2. Check if the first response is not cached.
3. Make second http request and check if the response is cached.
*/
"use strict";
const { HttpServer } = ChromeUtils.import("resource://testing-common/httpd.js");
function test_handler(metadata, response) {
response.setHeader("Content-Type", "text/html", false);
response.setHeader("Cache-control", "max-age=9999", false);
response.setStatusLine(metadata.httpVersion, 204, "No Content");
}
function make_channel(url) {
let channel = NetUtil.newChannel({
uri: url,
loadUsingSystemPrincipal: true,
}).QueryInterface(Ci.nsIHttpChannel);
return channel;
}
async function get_response(channel, fromCache) {
return new Promise(resolve => {
channel.asyncOpen(
new ChannelListener((request, buffer, ctx, isFromCache) => {
ok(fromCache == isFromCache, `got response from cache = ${fromCache}`);
resolve();
})
);
});
}
async function stop_server(httpserver) {
return new Promise(resolve => {
httpserver.stop(resolve);
});
}
add_task(async function() {
let httpserver = new HttpServer();
httpserver.registerPathHandler("/testdir", test_handler);
httpserver.start(-1);
const PORT = httpserver.identity.primaryPort;
const URI = `http://localhost:${PORT}/testdir`;
await get_response(make_channel(URI, "GET"), false);
await get_response(make_channel(URI, "GET"), true);
await stop_server(httpserver);
});