browser_changes_background_tracking.js

Enable keyboard shortcuts

/* Any copyright is dedicated to the Public Domain.

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

"use strict";

// Test that CSS changes are collected in the background without the Changes panel visible

const TEST_URI = `

  <style type='text/css'>

    div {

      color: red;

  </style>

  <div></div>

`;

add_task(async function () {

  info("Ensure Changes panel is NOT the default panel; use Computed panel");

  await pushPref("devtools.inspector.activeSidebar", "computedview");

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

  const { inspector, view: ruleView } = await openRuleView();

  await selectNode("div", inspector);

  const prop = getTextProperty(ruleView, 1, { color: "red" });

  info("Disable the first CSS declaration");

  await togglePropStatus(ruleView, prop);

  info("Select the Changes panel");

  const { document: doc, store } = selectChangesView(inspector);

  const onTrackChange = waitForDispatch(store, "TRACK_CHANGE");

  const onResetChanges = waitForDispatch(store, "RESET_CHANGES");

  info("Wait for change to be tracked");

  await onTrackChange;

  const removedDeclarations = getRemovedDeclarations(doc);

  is(removedDeclarations.length, 1, "One declaration was tracked as removed");

  // Test for Bug 1656477. Check that changes are not cleared immediately afterwards.

  info("Wait to see if the RESET_CHANGES action is dispatched unexpecteldy");

  const sym = Symbol();

  const onTimeout = wait(500).then(() => sym);

  const raceResult = await Promise.any([onResetChanges, onTimeout]);

  Assert.strictEqual(raceResult, sym, "RESET_CHANGES has not been dispatched");

});