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| (Empty) | |
| 1 <!DOCTYPE html> |
| 2 <head> |
| 3 <title>Performance Paint Timing Test</title> |
| 4 </head> |
| 5 <body> |
| 6 <script src="../../resources/testharness.js"></script> |
| 7 <script src="../../resources/testharnessreport.js"></script> |
| 8 <div id="main"></div> |
| 9 |
| 10 <script> |
| 11 async_test(function(t) { |
| 12 testRunner.capturePixelsAsyncThen(t.step_func(function() { |
| 13 const bufferedEntries = performance.getEntriesByType('paint'); |
| 14 assert_equals(bufferedEntries.length, 0, "No paint entries yet"); |
| 15 |
| 16 const div = document.createElement("div"); |
| 17 div.style.width = "100px"; |
| 18 div.style.height = "100px"; |
| 19 div.style.backgroundColor = "red"; |
| 20 div.style.color = "blue"; |
| 21 div.innerHTML = "test" |
| 22 document.getElementById("main").appendChild(div); |
| 23 |
| 24 testRunner.capturePixelsAsyncThen(t.step_func_done(function() { |
| 25 const bufferedEntries = performance.getEntriesByType('paint'); |
| 26 assert_equals(bufferedEntries.length, 2, "FP and FCP."); |
| 27 assert_equals(bufferedEntries[0].entryType, "paint"); |
| 28 assert_equals(bufferedEntries[0].name, "first-paint"); |
| 29 assert_equals(bufferedEntries[1].entryType, "paint"); |
| 30 assert_equals(bufferedEntries[1].name, "first-contentful-paint")
; |
| 31 })); |
| 32 })); |
| 33 }, "Basic test to check existence of FP and FCP."); |
| 34 </script> |
| 35 </body> |
| 36 </html> |
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Chromium Code Reviews
Issue 2932593002:
Attempt 2: Update PaintTiming Web Perf APIs for FP & FCP to report swap time (Closed)
