browser_layout_simple.js

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/* Any copyright is dedicated to the Public Domain.

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

"use strict";

// Simple checks for the LayoutActor and GridActor

add_task(async function () {

  const { target, walker, layout } = await initLayoutFrontForUrl(

    "data:text/html;charset=utf-8,<title>test</title><div></div>"

);

  ok(layout, "The LayoutFront was created");

  ok(layout.getGrids, "The getGrids method exists");

  let didThrow = false;

  try {

    await layout.getGrids(null);

  } catch (e) {

    didThrow = true;

  ok(didThrow, "An exception was thrown for a missing NodeActor in getGrids");

  const invalidNode = await walker.querySelector(walker.rootNode, "title");

  const grids = await layout.getGrids(invalidNode);

  ok(Array.isArray(grids), "An array of grids was returned");

  is(grids.length, 0, "0 grids have been returned for the invalid node");

  await target.destroy();

  gBrowser.removeCurrentTab();

});