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- This WPT test may be referenced by the following Test IDs:
- /css/css-pseudo/highlight-cascade/highlight-cascade-011.html - WPT Dashboard Interop Dashboard
<!doctype html>
<meta charset="utf-8">
<title>CSS Pseudo-Elements Test: highlight cascade: inheritance of custom properties</title>
<link rel="author" title="Stephen Chenney" href="mailto:schenney@chromium.org">
<meta name="assert" content="This test verifies that custom properties used in highlight pseudos are taken from the highlight and originating element.">
<script src="../support/selections.js"></script>
<link rel="stylesheet" href="../support/highlights.css">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
:root::selection {
--background-color: red;
}
div::selection {
background-color: var(--background-color, green);
}
</style>
<body>
<div>Some text</div>
</body>
<script>
selectNodeContents(document.querySelector("body"));
const div_selection = getComputedStyle(document.querySelector("div"), "::selection");
test(() => void assert_equals(div_selection.backgroundColor, "rgb(0, 128, 0)"),
"div::selection does not inherit custom properties from the highlight parent");
test(() => void assert_equals(div_selection.getPropertyValue("--background-color"), ""),
"--background-color has no computed value on div::selection");
</script>