| <!DOCTYPE html> |
| <html> |
| <body> |
| <script src="../resources/runner.js"></script> |
| |
| <p id="testElement" spellcheck=false style="height:90vh"></p> |
| |
| <script> |
| var isDone = false; |
| var startTime; |
| |
| function randomString() { |
| return '' + Math.floor(1000000 * Math.random()); |
| } |
| |
| function runTest() { |
| if (startTime) { |
| PerfTestRunner.measureValueAsync(PerfTestRunner.now() - startTime); |
| PerfTestRunner.addRunTestEndMarker(); |
| } |
| if (!isDone) { |
| PerfTestRunner.addRunTestStartMarker(); |
| startTime = PerfTestRunner.now(); |
| |
| // Fill the paragraph with 200 lines of text with <br> elements |
| // in-between. |
| setTimeout(() => { |
| var testElement = document.getElementById('testElement'); |
| var html = ''; |
| for (var i = 0; i < 200; i++) { |
| html += randomString() + ' ' + randomString() + '<br>'; |
| } |
| testElement.innerHTML = html; |
| }, 250); |
| |
| // Wait to allow the asynchronous accessibility code that's |
| // covered by traceEventsToMeasure to have a chance to run. |
| setTimeout(runTest, 2500); |
| } |
| } |
| |
| PerfTestRunner.startMeasureValuesAsync({ |
| description: 'Test accessibility performance of many line breaks in one paragraph.', |
| unit: 'ms', |
| done: function () { |
| isDone = true; |
| }, |
| run: function() { |
| runTest(); |
| }, |
| iterationCount: 6, |
| tracingCategories: 'accessibility', |
| traceEventsToMeasure: [ |
| 'RenderAccessibilityImpl::SendPendingAccessibilityEvents', |
| ] |
| }); |
| </script> |
| |
| </html> |
