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+++ b/testing/web-platform/tests/html/semantics/document-metadata/the-meta-element/color-scheme/meta-color-scheme-single-value-in-shadow-tree.html
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+<!doctype html>
+<title>Meta color-scheme in shadow-tree should not apply</title>
+<link rel="help" href="https://html.spec.whatwg.org/multipage/semantics.html#meta-color-scheme">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="support/compute-root-color-scheme.js"></script>
+<!--
+ NOTE: This test assumes that the browser's default color-scheme is "light",
+ see https://github.com/web-platform-tests/wpt/pull/31268 for reasoning
+-->
+<script>
+ const host = document.createElement("div");
+ host.id = "host";
+ document.head.appendChild(host);
+ const root = host.attachShadow({mode:"open"});
+ const meta = document.createElement("meta");
+ meta.setAttribute("name", "color-scheme");
+ meta.setAttribute("content", "dark");
+ root.appendChild(meta);
+
+ assert_root_color_scheme("light", "Meta color-scheme in shadow tree does not apply.");
+</script>