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UXP/devtools/server/tests/browser/browser_animation_setPlaybackRate.js
2020-09-25 22:06:55 +08:00

51 lines
1.7 KiB
JavaScript

/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
"use strict";
// Check that a player's playbackRate can be changed, and that multiple players
// can have their rates changed at the same time.
add_task(function* () {
let {client, walker, animations} =
yield initAnimationsFrontForUrl(MAIN_DOMAIN + "animation.html");
info("Retrieve an animated node");
let node = yield walker.querySelector(walker.rootNode, ".simple-animation");
info("Retrieve the animation player for the node");
let [player] = yield animations.getAnimationPlayersForNode(node);
ok(player.setPlaybackRate, "Player has the setPlaybackRate method");
info("Change the rate to 10");
yield player.setPlaybackRate(10);
info("Query the state again");
let state = yield player.getCurrentState();
is(state.playbackRate, 10, "The playbackRate was updated");
info("Change the rate back to 1");
yield player.setPlaybackRate(1);
info("Query the state again");
state = yield player.getCurrentState();
is(state.playbackRate, 1, "The playbackRate was changed back");
info("Retrieve several animation players and set their rates");
node = yield walker.querySelector(walker.rootNode, "body");
let players = yield animations.getAnimationPlayersForNode(node);
info("Change all animations in <body> to .5 rate");
yield animations.setPlaybackRates(players, .5);
info("Query their states and check they are correct");
for (let player of players) {
let state = yield player.getCurrentState();
is(state.playbackRate, .5, "The playbackRate was updated");
}
yield client.close();
gBrowser.removeCurrentTab();
});