browser_grids_grid-outline-highlight-cell.js

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/* Any copyright is dedicated to the Public Domain.

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

"use strict";

// Tests that the grid cell is highlighted when hovering over the grid outline of a

// grid cell.

const TEST_URI = `

  <style type='text/css'>

    #grid {

      display: grid;

  </style>

  <div id="grid">

    <div id="cella">Cell A</div>

    <div id="cellb">Cell B</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 { store } = inspector;

  const HIGHLIGHTER_TYPE = inspector.highlighters.TYPES.GRID;

  const { waitForHighlighterTypeShown } = getHighlighterTestHelpers(inspector);

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

  const checkbox = gridList.children[0].querySelector("input");

  info("Toggling ON the CSS grid highlighter from the layout panel.");

  const onHighlighterShown = waitForHighlighterTypeShown(HIGHLIGHTER_TYPE);

  const onGridOutlineRendered = waitForDOM(doc, "#grid-cell-group rect", 2);

  const onCheckboxChange = waitUntilState(

    store,

    state => state.grids.length == 1 && state.grids[0].highlighted

);

  checkbox.click();

  info("Wait for checkbox to change");

  await onCheckboxChange;

  info("Wait for highlighter to be shown");

  await onHighlighterShown;

  info("Wait for outline to be rendered");

  await onGridOutlineRendered;

  info("Hovering over grid cell A in the grid outline.");

  const onCellAHighlight = waitForHighlighterTypeShown(HIGHLIGHTER_TYPE);

  synthesizeMouseOverOnGridCell(doc, 0);

  const { options } = await onCellAHighlight;

  info("Checking show grid cell options are correct.");

  const { showGridCell } = options;

  const { gridFragmentIndex, rowNumber, columnNumber } = showGridCell;

  is(gridFragmentIndex, "0", "Should be the first grid fragment index.");

  is(rowNumber, "1", "Should be the first grid row.");

  is(columnNumber, "1", "Should be the first grid column.");

});