browser_computed_no-results-placeholder.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 no results placeholder works properly.

const TEST_URI = `

  <style type="text/css">

    .matches {

      color: #F00;

  </style>

  <span id="matches" class="matches">Some styled text</span>

`;

add_task(async function () {

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

  const { inspector, view } = await openComputedView();

  await selectNode("#matches", inspector);

  await enterInvalidFilter(inspector, view);

  checkNoResultsPlaceholderShown(view);

  await clearFilterText(inspector, view);

  checkNoResultsPlaceholderHidden(view);

});

async function enterInvalidFilter(inspector, computedView) {

  const searchbar = computedView.searchField;

  const searchTerm = "xxxxx";

  info('setting filter text to "' + searchTerm + '"');

  const onRefreshed = inspector.once("computed-view-refreshed");

  searchbar.focus();

  synthesizeKeys(searchTerm, computedView.styleWindow);

  await onRefreshed;

function checkNoResultsPlaceholderShown(computedView) {

  info("Checking that the no results placeholder is shown");

  const placeholder = computedView.noResults;

  const win = computedView.styleWindow;

  const display = win.getComputedStyle(placeholder).display;

  is(display, "block", "placeholder is visible");

async function clearFilterText(inspector, computedView) {

  info("Clearing the filter text");

  const searchbar = computedView.searchField;

  const onRefreshed = inspector.once("computed-view-refreshed");

  searchbar.focus();

  searchbar.value = "";

  EventUtils.synthesizeKey("c", {}, computedView.styleWindow);

  await onRefreshed;

function checkNoResultsPlaceholderHidden(computedView) {

  info("Checking that the no results placeholder is hidden");

  const placeholder = computedView.noResults;

  const win = computedView.styleWindow;

  const display = win.getComputedStyle(placeholder).display;

  is(display, "none", "placeholder is hidden");