| <!DOCTYPE html> |
| <html> |
| <body> |
| <script src="../resources/runner.js"></script> |
| |
| <table id="table"></table> |
| |
| <script> |
| |
| var isDone = false; |
| var startTime; |
| |
| function runTest() { |
| if (startTime) { |
| PerfTestRunner.measureValueAsync(PerfTestRunner.now() - startTime); |
| PerfTestRunner.addRunTestEndMarker(); |
| } |
| if (!isDone) { |
| PerfTestRunner.addRunTestStartMarker(); |
| startTime = PerfTestRunner.now(); |
| |
| // Add 100 rows with just a header in each. |
| let table = document.getElementById('table'); |
| table.innerHTML = ''; |
| for (let i = 0; i < 100; i++) { |
| let row = document.createElement('tr'); |
| row.innerHTML = '<th>Header</th>'; |
| table.appendChild(row); |
| } |
| |
| setTimeout(() => { |
| // Add 33 cells to each row. |
| for (let row = table.firstElementChild; |
| row; |
| row = row.nextElementSibling) { |
| for (let i = 0; i < 33; i++) { |
| let cell = document.createElement('td'); |
| cell.innerHTML = i; |
| row.appendChild(cell); |
| } |
| } |
| }, 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 when dynamically building a table.', |
| unit: 'ms', |
| done: function () { |
| isDone = true; |
| }, |
| run: function() { |
| runTest(); |
| }, |
| iterationCount: 6, |
| tracingCategories: 'accessibility', |
| traceEventsToMeasure: [ |
| 'AXObjectCacheImpl::ChildrenChanged(LayoutObject)', |
| 'ProcessDeferredAccessibilityEvents' |
| ] |
| }); |
| </script> |
| |
| </html> |
