<!DOCTYPE html>
<html>
<head>
<style>
div.content1 {
z-index: 3;
position: absolute;
top: 0px;
background-color: white;
width: 100vw;
height: 100vh;
}
div.empty {
z-index: 1;
position: absolute;
top: 100vh;
width: 100vw;
height: 100vh;
}
div.content2 {
z-index: 3;
position: absolute;
top: 200vh;
background-color: white;
width: 100vw;
height: 100vh;
}
iframe {
z-index: 2;
position: fixed;
width: 100vw;
height: 100vh;
border: 0px;
background-color: blue;
}
p {
position: fixed;
}
</style>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script src="../resources/overlay-interstitial-ad-testharness.js"></script>
</head>
<body marginwidth="0" marginheight="0">
<!-- To trigger the first contentful paint at the very start -->
<p>some content</p>
<div class="content1">some content</div>
<div class="empty"></div>
<div class="content2">some content</div>
<script>
promise_test(async function(t) {
// After 1500ms, force a layout update so that the interstitial detector
// is aware of the first meaningful paint, and future overlay candidates
// will be considered for pop-ups rather than for prestitials.
await timeout(1500);
await forceLayoutUpdate();
// Create the parallax-ad, which is below the "content" div and above the
// "empty" div.
appendAdFrameTo(document.body);
// Scroll down to the position where the parallax-ad is no longer covered
// by "content1" and becomes visible.
window.scrollTo(0, document.documentElement.clientHeight);
// Force a layout update, so that the interstitial detector is aware of
// the overlay ad candidate.
await forceLayoutUpdate();
// Scroll further down to the position where the parallax-ad is covered by
// "content2" and becomes invisible again.
window.scrollTo(0, document.documentElement.clientHeight * 2);
// Force a layout update, so that the interstitial detector is aware of
// the overlay ad candidate's dismissal.
await forceLayoutUpdate();
// Expect no kOverlayPopupAd UseCounter as the scroll offset has changed
// since the candidate's appearance.
assert_false(internals.isUseCounted(document, kOverlayPopupAd));
}, "Test parallax-ad while scrolling over the page. In this case, we expect no use counter for kOverlayPopupAd.");
</script>
</body>
</html>
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