54 lines
1.8 KiB
HTML
54 lines
1.8 KiB
HTML
<!doctype html>
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<title>CSS Container Queries Test: scrollbar stability for @container queries and overflow:auto</title>
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<link rel="help" href="https://drafts.csswg.org/css-conditional-5/#container-queries">
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<link rel="help" href="https://drafts.csswg.org/css-overflow-3/#scrollbar-layout">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="support/cq-testcommon.js"></script>
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<style>
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#scroller {
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height: 100px;
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width: 100px;
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overflow-y: auto;
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}
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#container {
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container-type: inline-size;
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}
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#inner {
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height: 100px;
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border-bottom: 1px solid red;
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}
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@container (max-width: 99px) {
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#inner {
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height: 50px;
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}
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}
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</style>
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<div id="precondition" style="width:100px;height:100px;overflow:scroll"></div>
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<div id="scroller">
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<div id="container">
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<div id="inner"></div>
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</div>
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</div>
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<script>
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setup(() => {
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assert_implements_size_container_queries();
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});
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const has_overlay_scrollbars = precondition.clientWidth === 100;
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let initialScrollerWidth = scroller.clientWidth;
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test(() => {
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if (has_overlay_scrollbars) return;
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assert_equals(getComputedStyle(inner).height, "50px",
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"Layout with a scrollbar means the container query applies");
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}, "Initial layout - expecting a scrollbar without overflowing content instead of overflowing content without a scrollbar");
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test(() => {
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if (has_overlay_scrollbars) return;
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inner.style.borderBottomWidth = "2px";
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assert_equals(scroller.clientWidth, initialScrollerWidth, "Scrollbar visibility is consistent after reflow.");
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assert_equals(getComputedStyle(inner).height, "50px",
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"Layout with a scrollbar means the container query applies");
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}, "Same result after a reflow");
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</script>
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