devtools/client/netmonitor/test/browser_net_header-dns.js

   1 /* Any copyright is dedicated to the Public Domain.
   2    http://creativecommons.org/publicdomain/zero/1.0/ */
   3
   4 "use strict";
   5
   6 /**
   7  * Tests if "DNS Resolution" is displayed in the headers panel and
   8  * that requests that are resolve over DNS over HTTPS are accuratelly tracked.
   9  * Note: Test has to run as a http3 test for the DoH servers to be used
  10  */
  11
  12 add_task(async function testCheckDNSResolution() {
  13   Services.dns.clearCache(true);
  14   // Force to use DNS Trusted Recursive Resolver only
  15   await pushPref("network.trr.mode", 3);
  16
  17   const { monitor } = await initNetMonitor(HTTPS_SIMPLE_URL, {
  18     enableCache: true,
  19     requestCount: 1,
  20   });
  21
  22   const { document } = monitor.panelWin;
  23
  24   const requestsComplete = waitForNetworkEvents(monitor, 1);
  25   await reloadBrowser();
  26   await requestsComplete;
  27
  28   // Wait until the tab panel summary is displayed
  29   const waitForTab = waitUntil(
  30     () => document.querySelectorAll(".tabpanel-summary-label")[0]
  31   );
  32   EventUtils.sendMouseEvent(
  33     { type: "mousedown" },
  34     document.querySelectorAll(".request-list-item")[0]
  35   );
  36   await waitForTab;
  37
  38   const dnsEl = [...document.querySelectorAll(".headers-summary")].find(
  39     el =>
  40       el.querySelector(".headers-summary-label").textContent ===
  41       "DNS Resolution"
  42   );
  43
  44   is(
  45     dnsEl.querySelector(".tabpanel-summary-value").textContent,
  46     L10N.getStr(`netmonitor.headers.dns.overHttps`),
  47     "The DNS Resolution value showed correctly"
  48   );
  49
  50   return teardown(monitor);
  51 });