31 lines
1.4 KiB
HTML
31 lines
1.4 KiB
HTML
<!doctype html>
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<meta charset="utf-8">
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<title>CSS Pseudo-Elements Test: highlight cascade: inheritance of custom properties</title>
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<link rel="author" title="Stephen Chenney" href="mailto:schenney@chromium.org">
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<link rel="help" href="https://drafts.csswg.org/css-pseudo-4/#highlight-cascade">
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<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/6641">
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<meta name="assert" content="This test verifies that custom properties used in highlight pseudos are taken from the highlight and originating element.">
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<script src="../support/selections.js"></script>
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<link rel="stylesheet" href="../support/highlights.css">
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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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:root::selection {
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--background-color: red;
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}
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div::selection {
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background-color: var(--background-color, green);
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}
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</style>
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<body>
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<div>Some text</div>
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</body>
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<script>
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selectNodeContents(document.querySelector("body"));
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const div_selection = getComputedStyle(document.querySelector("div"), "::selection");
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test(() => void assert_equals(div_selection.backgroundColor, "rgb(0, 128, 0)"),
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"div::selection does not inherit custom properties from the highlight parent");
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test(() => void assert_equals(div_selection.getPropertyValue("--background-color"), ""),
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"--background-color has no computed value on div::selection");
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</script>
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