prefers-color-scheme.html

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This WPT test may be referenced by the following Test IDs:
- /css/mediaqueries/prefers-color-scheme.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<link rel="help" href="https://drafts.csswg.org/mediaqueries-5/#prefers-color-scheme" />

<script type="text/javascript" src="/resources/testharness.js"></script>

<script type="text/javascript" src="/resources/testharnessreport.js"></script>

<script type="text/javascript" src="resources/matchmedia-utils.js"></script>

<script>

query_should_be_known("(prefers-color-scheme)");

query_should_be_known("(prefers-color-scheme: light)");

query_should_be_known("(prefers-color-scheme: dark)");

query_should_be_unknown("(prefers-color-scheme: 0)");

query_should_be_unknown("(prefers-color-scheme: none)");

query_should_be_unknown("(prefers-color-scheme: 10px)");

query_should_be_unknown("(prefers-color-scheme: dark 0)");

query_should_be_unknown("(prefers-color-scheme: dark light)");

query_should_be_unknown("(prefers-color-scheme: light/dark)");

query_should_be_unknown("(prefers-color-scheme: no-preference)");

test(() => {

  let booleanContext = window.matchMedia("(prefers-color-scheme)");

  assert_true(booleanContext.matches);

}, "Check that prefer-color-scheme evaluates to true in the boolean context");

</script>