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[css-position] Added 4 new sticky tests (#32612)
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@TalbotG
TalbotG authored Jun 22, 2022
1 parent dc468be commit 72d95bb
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53 changes: 53 additions & 0 deletions css/css-position/sticky/position-sticky-fixed-ancestor-002.html
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<!DOCTYPE html>

<meta charset="UTF-8">

<title>CSS Positioned Layout Test: a sticky element inside a fixed ancestor</title>

<link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
<link rel="match" href="reference/position-sticky-fixed-ancestor-002-ref.html">
<link rel="help" href="https://www.w3.org/TR/css-position-3/#sticky-pos">

<meta name="flags" content="">

<style>
html, body, div
{
height: 100%;
margin: 0;
width: 100%;
}

div#positioned-container
{
background-color: red;
color: yellow;
font-size: 40vh;
position: absolute;
}

div#sticky
{
background-color: green;
bottom: 0;
color: white;
position: sticky;
}
</style>

<script type="text/javascript">
function startTest()
{
document.getElementById("positioned-container").style.position = "fixed";
}
</script>

<body onload="startTest();">

<div id="positioned-container">

<div id="vertical-spacer">FAIL</div>

<div id="sticky">PASS</div>

</div>
44 changes: 44 additions & 0 deletions css/css-position/sticky/position-sticky-fixed-ancestor-003.html
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<!DOCTYPE html>

<meta charset="UTF-8">

<title>CSS Positioned Layout Test: a sticky element inside a fixed ancestor</title>

<link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
<link rel="match" href="reference/position-sticky-fixed-ancestor-002-ref.html">
<link rel="help" href="https://www.w3.org/TR/css-position-3/#sticky-pos">

<meta name="flags" content="">

<style>
html, body, div
{
height: 100%;
margin: 0;
width: 100%;
}

div#fixed-container
{
background-color: red;
color: yellow;
font-size: 40vh;
position: fixed;
}

div#sticky
{
background-color: green;
bottom: 0;
color: white;
position: sticky;
}
</style>

<div id="fixed-container">

<div id="vertical-spacer">FAIL</div>

<div id="sticky">PASS</div>

</div>
118 changes: 98 additions & 20 deletions css/css-position/sticky/position-sticky-scrolled-remove-sibling.html
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<!DOCTYPE html>
<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
<link rel="help" href="https://www.w3.org/TR/css-position-3/#sticky-pos">
<p>Test passes if there is a filled green square, and no scrollbars</p>
<div id="container" style="overflow:auto; width:100px; height:100px; background:red;">
<div style="position:sticky; top:0; height:100px; background:green;"></div>
<div id="bigItem" style="height:600px;"></div>
</div>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
container.scrollTop = 600;
requestAnimationFrame(()=>{
requestAnimationFrame(()=>{
bigItem.style.display = "none";
test(()=> {
assert_equals(container.scrollHeight, 100);
}, "Sticky position and its overflow contribution");
});
});
</script>

<meta charset="UTF-8">

<title>CSS Positioned Layout Test: element with 'position: sticky' and removing a sibling in the vertical axis and in the horizontal axis</title>

<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
<link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
<link rel="help" href="https://www.w3.org/TR/css-position-3/#sticky-pos">

<meta name="flags" content="">

<style>
div#scrollingContainerVert
{
background-color: red;
height: 100px;
overflow: auto;
width: 200px;
}

div#scrollingContainerHoriz
{
background-color: red;
height: 100px;
overflow-x: auto;
overflow-y: hidden;
width: 200px;
}

div#elemStickyVert
{
background-color: green;
height: 100px;
position: sticky;
top: 0px;
}

div#scrollingContainerHoriz > div
{
display: inline-block;
height: 100%;
}

div#elemStickyHoriz
{
background-color: green;
left: 0px;
position: sticky;
width: 200px;
}

div#tallItem
{
height: 600px;
}

div#wideItem
{
width: 600px;
}
</style>


<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<p>Test passes if there is a filled green square and <strong>no scrollbar</strong>.

<div id="scrollingContainerVert">

<div id="elemStickyVert"></div>

<div id="tallItem"></div>

</div>


<div id="scrollingContainerHoriz">

<div id="elemStickyHoriz"></div><div id="wideItem"></div>

</div>


<script>
test(()=> {
scrollingContainerVert.scrollTop = 600;
tallItem.style.display = "none";
assert_equals(scrollingContainerVert.scrollHeight, 100);
}, "Sticky position and its overflow contribution in the vertical axis");

test(()=> {
scrollingContainerHoriz.scrollLeft = 600;
wideItem.style.display = "none";
assert_equals(scrollingContainerHoriz.scrollWidth, 200);
}, "Sticky position and its overflow contribution in the horizontal axis");
</script>
47 changes: 47 additions & 0 deletions css/css-position/sticky/position-sticky-stacking-context-002.html
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<!DOCTYPE html>

<meta charset="UTF-8">

<title>CSS Positioned Layout Test: an element with 'position: sticky' creates a stacking context</title>

<link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
<link rel="match" href="../../reference/ref-filled-green-100px-square.xht">
<link rel="help" href="https://www.w3.org/TR/css-position-3/#sticky-pos">

<meta name="assert" content="This test checks that an element with 'position: sticky' creates a stacking context. In this test, the first 2 divs have the same 'auto' z-index value but since div#sticky is last in document tree order, then it must overlap div#overlapped-red. The final div#overlap-bottom-half-of-sticky exists to make sure that the div#sticky is squeezed, is 'sandwiched' between the other 2.">

<style>
div
{
height: 100px;
width: 100px;
}

div#overlapped-red
{
background-color: red;
position: absolute;
}

div#sticky
{
background: linear-gradient(to bottom, green 51%, red 49%);
position: sticky;
}

div#overlap-bottom-half-of-sticky
{
background-color: green;
bottom: 50px;
height: 50px;
position: relative;
}
</style>

<p>Test passes if there is a filled green square and <strong>no red</strong>.

<div id="overlapped-red"></div>

<div id="sticky"></div>

<div id="overlap-bottom-half-of-sticky"></div>
20 changes: 20 additions & 0 deletions css/css-position/sticky/reference/position-sticky-fixed-ancestor-002-ref.html
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<!DOCTYPE html>

<meta charset="UTF-8">

<title>CSS Reference File</title>

<link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">

<style>
html, body, div
{
background-color: green;
color: white;
font-size: 40vh;
height: 100%;
margin: 0;
}
</style>

<div>PASS</div>

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