| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <meta name="timeout" content="long"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script> |
| 'use strict'; |
| |
| promise_test(t => { |
| return new Promise((resolve, reject) => { |
| document.addEventListener("visibilitychange", () => { |
| assert_true(document.hidden, "document is hidden"); |
| window.addEventListener( |
| 'devicemotion', |
| event => { |
| if (document.hidden) { |
| reject(); |
| } else { |
| resolve(); |
| } |
| }, |
| { once: true }); |
| }, { once: true }); |
| }); |
| }, 'Tests to check that devicemotion events are not fired when the page is not visible.'); |
| </script> |
| |
| <p>Switch the page to the background, then switch back to it.</p> |
