| <!DOCTYPE html> |
| <html> |
| <meta charset=utf-8 /> |
| <title>Event Timing only times certain types of trusted event. |
| </title> |
| <meta name="timeout" content="long"> |
| <button id='button' onmousedown='mainThreadBusy(60)' |
| onfocus='mainThreadBusy(60)'>Generate a 'click' event</button> |
| <script src=/resources/testharness.js></script> |
| <script src=/resources/testharnessreport.js></script> |
| <script src=/resources/testdriver.js></script> |
| <script src=/resources/testdriver-vendor.js></script> |
| |
| <script src=resources/event-timing-support.js></script> |
| <script> |
| let trustedClickStart; |
| function trustedClickAndBlockMain(id) { |
| return new Promise((resolve, reject) => { |
| trustedClickStart = performance.now(); |
| clickOnElement(id, resolve); |
| }); |
| } |
| |
| function untrustedClickAndBlockMain(id) { |
| const target = document.getElementById(id); |
| // Block mainthread in the callback, as dispatchEvent() is a sync call. |
| target.dispatchEvent(new MouseEvent('mousedown')); |
| } |
| |
| function trustedFocusAndBlockMain(id) { |
| const target = document.getElementById(id); |
| trustedFocusStart = performance.now(); |
| // Block mainthread in the callback, as focus() is a sync call. |
| target.focus(); |
| } |
| |
| async_test(function(t) { |
| new PerformanceObserver(t.step_func_done(entryList => { |
| const observerCallbackTime = performance.now(); |
| const entries = entryList.getEntries().filter( |
| entry => entry.name === 'mousedown'); |
| assert_equals(entries.length, 1, |
| "Should only observe one entry: " + |
| JSON.stringify(entries) + "."); |
| assert_equals(entries[0].name, 'mousedown', |
| "The observed entry should be a click"); |
| assert_less_than(entries[0].startTime, observerCallbackTime, |
| "The startTime should be before observerCallbackTime"); |
| assert_greater_than(entries[0].startTime, trustedClickStart, |
| "The startTime should be after trustedClickStart"); |
| })).observe({ entryTypes: ['event'] }); |
| // Untrusted event of a type event timing cares about. |
| untrustedClickAndBlockMain('button'); |
| // Trusted event of a type event timing doesn't cares about. |
| trustedFocusAndBlockMain('button'); |
| // Trusted event of a type event timing cares about. |
| trustedClickAndBlockMain('button').then(wait); |
| }, "Event Timing only times certain types of trusted event."); |
| </script> |
| </html> |
