| <!doctype html> |
| <title>Verifies there are no spurious repaints for audio in a video tag.</title> |
| <script src="../resources/testharness.js"></script> |
| <script src="../resources/testharnessreport.js"></script> |
| <video></video> |
| <script> |
| async_test(function(t) { |
| var video = document.querySelector('video'); |
| |
| video.addEventListener('canplaythrough', t.step_func(function() { |
| internals.startTrackingRepaints(document); |
| video.play(); |
| }), false); |
| |
| video.addEventListener('ended', t.step_func(function() { |
| var layerTree = internals.layerTreeAsText( |
| document, internals.LAYER_TREE_INCLUDES_REPAINT_RECTS); |
| var repaintRects = JSON.parse(layerTree).children[0].repaintRects; |
| internals.stopTrackingRepaints(document); |
| |
| // Manually verify the number of repaints instead of using a repaint |
| // test since media playback is asynchronous by nature and its threading |
| // will cause a variance in the number of repaints on test bots. |
| var minExpected = 3, maxExpected = 4, expectedRect = [8, 8, 300, 150]; |
| |
| t.add_cleanup(function() { |
| if (t.status == t.PASS) |
| return; |
| console.log('FAIL! An unexpected number of repaints occurred;' + |
| ' expected ' + minExpected + ' to ' + maxExpected + |
| ' with rects of [' + expectedRect.join(', ') + '].' + |
| ' Actual layer tree: ' + layerTree); |
| }); |
| |
| assert_between_inclusive(repaintRects.length, minExpected, maxExpected); |
| for (var i = 0; i < repaintRects.length; ++i) |
| assert_array_equals(repaintRects[i], expectedRect); |
| |
| t.done(); |
| }), false); |
| |
| video.src = 'content/silence.wav'; |
| }); |
| </script> |
