30 lines
No EOL
1.5 KiB
HTML
30 lines
No EOL
1.5 KiB
HTML
<!DOCTYPE html>
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<link rel="help" href="https://drafts.csswg.org/mediaqueries-5/#prefers-reduced-transparency" />
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<script type="text/javascript" src="/resources/testharness.js"></script>
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<script type="text/javascript" src="/resources/testharnessreport.js"></script>
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<script type="text/javascript" src="resources/matchmedia-utils.js"></script>
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<script>
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query_should_be_known("(prefers-reduced-transparency)");
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query_should_be_known("(prefers-reduced-transparency: no-preference)");
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query_should_be_known("(prefers-reduced-transparency: reduce)");
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query_should_be_unknown("(prefers-reduced-transparency: 0)");
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query_should_be_unknown("(prefers-reduced-transparency: none)");
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query_should_be_unknown("(prefers-reduced-transparency: 10px)");
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query_should_be_unknown("(prefers-reduced-transparency: no-preference reduce)");
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query_should_be_unknown("(prefers-reduced-transparency: reduced)");
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query_should_be_unknown("(prefers-reduced-transparency: no-preference/reduce)");
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test(() => {
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// https://drafts.csswg.org/mediaqueries-5/#boolean-context
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let booleanContext = window.matchMedia("(prefers-reduced-transparency)");
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let noPreference = window.matchMedia("(prefers-reduced-transparency: no-preference)");
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assert_equals(booleanContext.matches, !noPreference.matches);
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}, "Check that no-preference evaluates to false in the boolean context");
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test(() => {
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let invalid = window.matchMedia("(prefers-reduced-transparency: 10px)");
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assert_equals(invalid.matches, false);
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}, "Check that invalid evaluates to false");
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</script> |