31 lines
1,023 B
HTML
31 lines
1,023 B
HTML
<!DOCTYPE html>
|
|
<title>Layout Instability: opacity:0</title>
|
|
<link rel="help" href="https://wicg.github.io/layout-instability/" />
|
|
<div id="target" style="position: absolute; top: 0; width: 200px; height: 200px; opacity: 0; background: blue"></div>
|
|
<script src="/resources/testharness.js"></script>
|
|
<script src="/resources/testharnessreport.js"></script>
|
|
<script src="resources/util.js"></script>
|
|
<script>
|
|
|
|
promise_test(async () => {
|
|
const watcher = new ScoreWatcher;
|
|
|
|
// Wait for the initial render to complete.
|
|
await waitForAnimationFrames(2);
|
|
|
|
// Shift target, for which no shift should be reported because it's not visible.
|
|
target.style.top = '200px';
|
|
target.style.opacity = 0.9;
|
|
|
|
await waitForAnimationFrames(2);
|
|
assert_equals(watcher.score, 0);
|
|
|
|
// Shift again, for which shift should be reported.
|
|
target.style.top = '300px';
|
|
|
|
await watcher.promise;
|
|
const expectedScore = computeExpectedScore(200 * (200 + 100), 100);
|
|
assert_equals(watcher.score, expectedScore);
|
|
}, 'opacity:0');
|
|
|
|
</script>
|