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| (Empty) | |
| 1 <!DOCTYPE html> |
| 2 <script src="../resources/testharness.js"></script> |
| 3 <script src="../resources/testharnessreport.js"></script> |
| 4 |
| 5 <style> |
| 6 #target { |
| 7 width: 100px; |
| 8 height: 100px; |
| 9 transition: width 1s; |
| 10 } |
| 11 </style> |
| 12 |
| 13 <div id="target"></div> |
| 14 |
| 15 <script> |
| 16 'use strict'; |
| 17 |
| 18 function waitForProgress() { |
| 19 var initialWidth = getComputedStyle(target).width; |
| 20 return new Promise(resolve => { |
| 21 function poll() { |
| 22 var width = getComputedStyle(target).width; |
| 23 if (width === initialWidth) { |
| 24 requestAnimationFrame(poll); |
| 25 } else { |
| 26 resolve(); |
| 27 } |
| 28 } |
| 29 requestAnimationFrame(poll); |
| 30 }); |
| 31 } |
| 32 |
| 33 async_test(t => { |
| 34 assert_true( |
| 35 internals.isCSSPropertyUseCounted(document, "width"), |
| 36 'Usage of width in style causes it to be counted in normal CSS ' + |
| 37 'property UseCounter'); |
| 38 assert_true( |
| 39 internals.isCSSPropertyUseCounted(document, "height"), |
| 40 'Usage of height in style causes it to be counted in normal CSS ' + |
| 41 'property UseCounter'); |
| 42 |
| 43 assert_false( |
| 44 internals.isAnimatedCSSPropertyUseCounted(document, "width"), |
| 45 'Initially width animation has not been UseCounted'); |
| 46 assert_false( |
| 47 internals.isAnimatedCSSPropertyUseCounted(document, "height"), |
| 48 'Initially height animation has not been UseCounted'); |
| 49 |
| 50 target.offsetTop; // force recalc |
| 51 target.style.width = '200px'; |
| 52 |
| 53 waitForProgress().then(t.step_func_done(() => { |
| 54 assert_true( |
| 55 internals.isAnimatedCSSPropertyUseCounted(document, "width"), |
| 56 'After triggering the transition, width has been counted'); |
| 57 assert_false( |
| 58 internals.isAnimatedCSSPropertyUseCounted(document, "height"), |
| 59 'Height is not animated, so not counted'); |
| 60 })); |
| 61 }, 'Using CSS transitions causes UseCounter to be incremented.'); |
| 62 </script> |
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Chromium Code Reviews
Issue 2678143003:
Move CSS animations use counters to UseCounter (Closed)
