devtools/client/inspector/test/browser_inspector_remove-iframe-during-load.js


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/* vim: set ts=2 et sw=2 tw=80: */
/* Any copyright is dedicated to the Public Domain.
 * http://creativecommons.org/publicdomain/zero/1.0/ */
"use strict";

// Testing that the inspector doesn't go blank when navigating to a page that
// deletes an iframe while loading.

const TEST_URL = URL_ROOT + "doc_inspector_remove-iframe-during-load.html";

add_task(function* () {
  let {inspector, testActor} = yield openInspectorForURL("about:blank");
  yield selectNode("body", inspector);

  // We do not want to wait for the inspector to be fully ready before testing
  // so we load TEST_URL and just wait for the content window to be done loading
  yield testActor.loadAndWaitForCustomEvent(TEST_URL);

  // The content doc contains a script that creates iframes and deletes them
  // immediately after. It does this before the load event, after
  // DOMContentLoaded and after load. This is what used to make the inspector go
  // blank when navigating to that page.
  // At this stage, there should be no iframes in the page anymore.
  ok(!(yield testActor.hasNode("iframe")),
     "Iframes added by the content page should have been removed");

  // Create/remove an extra one now, after the load event.
  info("Creating and removing an iframe.");
  let onMarkupLoaded = inspector.once("markuploaded");
  testActor.eval("new " + function () {
    let iframe = document.createElement("iframe");
    document.body.appendChild(iframe);
    iframe.remove();
  });

  ok(!(yield testActor.hasNode("iframe")),
     "The after-load iframe should have been removed.");

  info("Waiting for markup-view to load.");
  yield onMarkupLoaded;

  // Assert that the markup-view is displayed and works
  ok(!(yield testActor.hasNode("iframe")), "Iframe has been removed.");
  is((yield testActor.getProperty("#yay", "textContent")), "load",
     "Load event fired.");

  yield selectNode("#yay", inspector);
});