browser_grids_grid-list-no-grids.js

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/* Any copyright is dedicated to the Public Domain.

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

"use strict";

// Tests that no grid list items and a "no grids available" message is displayed when

// there are no grid containers on the page.

const TEST_URI = `

  <style type='text/css'>

  </style>

  <div id="grid">

    <div id="cell1">cell1</div>

    <div id="cell2">cell2</div>

  </div>

`;

add_task(async function () {

  await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));

  const { inspector, gridInspector } = await openLayoutView();

  const { document: doc } = gridInspector;

  const { highlighters } = inspector;

  await selectNode("#grid", inspector);

  const noGridList = doc.querySelector(

    "#layout-grid-section .devtools-sidepanel-no-result"

);

  const gridList = doc.getElementById("grid-list");

  info("Checking the initial state of the Grid Inspector.");

  ok(noGridList, "The message no grid containers is displayed.");

  ok(!gridList, "No grid containers are listed.");

ok(

    !highlighters.gridHighlighters.size,

    "No CSS grid highlighter exists in the highlighters overlay."

);

});