<!DOCTYPE html> <meta charset="utf-8"> <title>Test Background Video Suspends</title> <script src="/tests/SimpleTest/SimpleTest.js"></script> <script src="manifest.js"></script> <script src="background_video.js"></script> <link rel="stylesheet" href="/tests/SimpleTest/test.css"/> <script type="text/javascript"> "use strict"; var manager = new MediaTestManager; var MIN_DELAY = 100; function testDelay(v, start, min) { let end = performance.now(); let delay = end - start; ok(delay >= min, `${v.token} suspended with a delay of ${delay} ms`); } startTest({ desc: 'Test Background Video Suspends', prefs: [ [ "media.test.setVisible", true ], [ "media.suspend-bkgnd-video.enabled", true ], // User a short delay to ensure video decode suspend happens before end // of video. [ "media.suspend-bkgnd-video.delay-ms", MIN_DELAY ], ], tests: gDecodeSuspendTests, runTest: (test, token) => { let v = appendVideoToDoc(test.name, token); manager.started(token); let start; waitUntilPlaying(v) .then(() => { start = performance.now(); }) .then(() => testVideoSuspendsWhenHidden(v)) .then(() => { testDelay(v, start, MIN_DELAY); return testVideoResumesWhenShown(v); }) .then(() => waitUntilEnded(v)) .then(() => { removeNodeAndSource(v); manager.finished(token); }); } }); </script>