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Update web-platform-tests to revision e92532746b7615dcccdfa060937a87664816b1db

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WPT Sync Bot 2018-02-21 20:12:51 -05:00
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140
tests/wpt/web-platform-tests/css/css-position/position-sticky-overflow-padding.html
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@ -1,106 +1,54 @@
<!DOCTYPE html>
<title>position:sticky elements should respect padding on their ancestor overflow element</title>
<link rel="match" href="position-sticky-overflow-padding-ref.html" />
<link rel="help" href="https://www.w3.org/TR/css-position-3/#sticky-pos" />
<meta name="assert" content="This test checks that position:sticky elements respect padding on their ancestor overflow element" />
<style>
.group {
display: inline-block;
position: relative;
width: 150px;
height: 250px;
}
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
.scroller {
/* The target sticky position should be offset by this padding. */
padding: 20px 0;
position: relative;
width: 100px;
height: 200px;
overflow-x: hidden;
overflow-y: auto;
}
<script src="resources/sticky-util.js"></script>
.contents {
height: 500px;
}
.prepadding {
height: 100px;
}
.container {
height: 200px;
}
.innerpadding {
height: 50px;
}
.indicator {
background-color: red;
position: absolute;
left: 0;
}
.sticky {
background-color: green;
position: sticky;
top: 0;
}
.box {
width: 100%;
height: 100px;
}
</style>
<body></body>
<script>
window.addEventListener('load', function() {
document.getElementById('scroller1').scrollTop = 50;
document.getElementById('scroller2').scrollTop = 175;
document.getElementById('scroller3').scrollTop = 220;
});
test(() => {
const elements = setupStickyTest('top', 50);
elements.scroller.style.padding = '20px 0';
// Before sticking; the element isn't within the padding range.
elements.scroller.scrollTop = 150;
const nonStickyTopY = elements.container.offsetTop +
elements.filler.clientHeight;
assert_equals(elements.sticky.offsetTop, nonStickyTopY);
}, 'A sticky element should not be affected by ancestor padding until it ' +
'reaches it');
test(() => {
const elements = setupStickyTest('top', 50);
elements.sticky.style.top = '0';
elements.scroller.style.padding = '20px 0';
elements.scroller.scrollTop = 200;
// This math cancels to sticky.offsetTop == (scroller.scrollTop + 50), but
// for clarity the calculations are left explicit.
const nonStickyTopY = elements.container.offsetTop +
elements.filler.clientHeight;
const targetTopY = elements.scroller.scrollTop;
const stickyOffset = targetTopY - nonStickyTopY;
assert_equals(elements.sticky.offsetTop, nonStickyTopY + stickyOffset + 20);
}, 'A sticky element should be offset by ancestor padding even when stuck');
test(() => {
const elements = setupStickyTest('top', 50);
elements.sticky.style.top = '0';
elements.scroller.style.padding = '20px 0';
elements.scroller.scrollTop = 315;
const maxOffsetInContainer = elements.container.offsetTop +
elements.container.clientHeight - elements.sticky.clientHeight;
assert_equals(elements.sticky.offsetTop, maxOffsetInContainer);
}, 'Ancestor overflow padding does not allow a sticky element to escape its ' +
'container');
</script>
<div class="group">
<div id="scroller1" class="scroller">
<div class="indicator box" style="top: 170px;"></div>
<div class="contents">
<div class="prepadding"></div>
<div class="container">
<div class="innerpadding"></div>
<div class="sticky box"></div>
</div>
</div>
</div>
</div>
<div class="group">
<div id="scroller2" class="scroller">
<div class="indicator box" style="top: 195px;"></div>
<div class="contents">
<div class="prepadding"></div>
<div class="container">
<div class="innerpadding"></div>
<div class="sticky box"></div>
</div>
</div>
</div>
</div>
<div class="group">
<div id="scroller3" class="scroller">
<div class="indicator box" style="top: 220px;"></div>
<div class="contents">
<div class="prepadding"></div>
<div class="container">
<div class="innerpadding"></div>
<div class="sticky box"></div>
</div>
</div>
</div>
</div>
<div>You should see three green boxes above. No red should be visible.</div>