forked from mirrors/gecko-dev
a2307e62ae
These changes were reviewed, landed, and accidentally backed out in bug 1528107. Differential Revision: https://phabricator.services.mozilla.com/D19871 --HG-- extra : rebase_source : e9b1a4ff9e8881a756e795c519e6a86b4c6a47dd extra : source : 9251d7ca6f093902261089f4c571db72b63df38d
36 lines
941 B
HTML
36 lines
941 B
HTML
<!DOCTYPE html>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<style>
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body { height: 4000px; }
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#outer { width: 300px; }
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#outer:after { content: " "; clear:both; display: table; }
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#float {
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float: left; background-color: #ccc;
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height: 500px; width: 100%;
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}
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#inner { height: 100px; background-color: green; }
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</style>
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<div id="outer">
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<div id="zeroheight">
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<div id="float">
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<div id="changer"></div>
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<div id="inner"></div>
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</div>
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</div>
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</div>
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<div>after</div>
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<script>
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// Tests that we descend into zero-height containers that have floating content.
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test(() => {
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document.scrollingElement.scrollTop = 50;
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assert_equals(document.querySelector("#zeroheight").offsetHeight, 0);
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document.querySelector("#changer").style.height = "50px";
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assert_equals(document.scrollingElement.scrollTop, 100);
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}, "Zero-height container with float.");
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</script>
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