browser_canvasframe_helper_02.js

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/* Any copyright is dedicated to the Public Domain.

   http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

// Test that the CanvasFrameAnonymousContentHelper does not insert content in

// XUL windows.

add_task(async function () {

  const tab = await addTab(

    "chrome://mochitests/content/browser/devtools/server/tests/browser/test-window.xhtml"

);

  await SpecialPowers.spawn(tab.linkedBrowser, [], async function () {

    const { require } = ChromeUtils.importESModule(

      "resource://devtools/shared/loader/Loader.sys.mjs"

);

    const {

      HighlighterEnvironment,

    } = require("resource://devtools/server/actors/highlighters.js");

    const {

      CanvasFrameAnonymousContentHelper,

    } = require("resource://devtools/server/actors/highlighters/utils/markup.js");

    const doc = content.document;

    const nodeBuilder = () => {

      const root = doc.createElement("div");

      const child = doc.createElement("div");

      child.style = "width:200px;height:200px;background:red;";

      child.id = "child-element";

      child.className = "child-element";

      child.textContent = "test element";

      root.appendChild(child);

      return root;

};

    info("Building the helper");

    const env = new HighlighterEnvironment();

    env.initFromWindow(doc.defaultView);

    const helper = new CanvasFrameAnonymousContentHelper(env, nodeBuilder);

    ok(!helper.content, "The AnonymousContent was not inserted in the window");

ok(

      !helper.getTextContentForElement("child-element"),

      "No text content is returned"

);

    env.destroy();

    helper.destroy();

});

  gBrowser.removeCurrentTab();

});