31 lines
1.3 KiB
HTML
31 lines
1.3 KiB
HTML
<!DOCTYPE html>
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<title>CSSOM: Modify selectorText in a shadow tree stylesheet</title>
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<link rel="author" title="Rune Lillesveen" href="mailto:futhark@chromium.org">
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<link rel="help" href="https://drafts.csswg.org/cssom/#dom-cssstylerule-selectortext">
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<link rel="help" href="https://drafts.csswg.org/css-scoping/#selectors">
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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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#container { color: red }
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.subtree * { color: pink }
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</style>
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<div id="container">
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<div id="host"></div>
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</div>
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<script>
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const root = host.attachShadow({mode:"open"});
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root.innerHTML = "<style>nomatch { color: green }</style><div>Green</div>";
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const div = root.querySelector("div");
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test(() => {
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assert_equals(getComputedStyle(div).color, "rgb(255, 0, 0)", "Color should initial be red.");
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}, "Check initial color.");
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test(() => {
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// The combination of the .subtree and CSSOM selector style invalidations
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// caused the Blink implementation to fail an assertion.
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container.className = "subtree";
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root.styleSheets[0].cssRules[0].selectorText = "div";
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assert_equals(getComputedStyle(div).color, "rgb(0, 128, 0)", "Color should be green after stylesheet change.");
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}, "Check that color changes correctly after shadow stylesheet selector and #container class is changed.");
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</script>
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