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color-valid-hsl.html
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color-valid-hsl.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS Color Level 4: Parsing and serialization of colors using valid HSL notation</title>
<link rel="help" href="https://drafts.csswg.org/css-color-4/#the-hsl-notation">
<link rel="help" href="https://drafts.csswg.org/css-color-4/#resolving-sRGB-values">
<link rel="help" href="https://drafts.csswg.org/css-color-4/#serializing-sRGB-values">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/parsing-testcommon.js"></script>
</head>
<body>
<script>
tests = [
["hsl(120 30% 50%)", "rgb(89, 166, 89)"],
["hsl(120 30% 50% / 0.5)", "rgba(89, 166, 89, 0.5)"],
["hsl(none none none)", "rgb(0, 0, 0)"],
["hsl(0 0% 0%)", "rgb(0, 0, 0)"],
["hsl(none none none / none)", "rgba(0, 0, 0, 0)"],
["hsl(0 0% 0% / 0)", "rgba(0, 0, 0, 0)"],
["hsla(none none none)", "rgb(0, 0, 0)"],
["hsla(0 0% 0%)", "rgb(0, 0, 0)"],
["hsla(none none none / none)", "rgba(0, 0, 0, 0)"],
["hsla(0 0% 0% / 0)", "rgba(0, 0, 0, 0)"],
["hsl(120 none none)", "rgb(0, 0, 0)"],
["hsl(120 0% 0%)", "rgb(0, 0, 0)"],
["hsl(120 80% none)", "rgb(0, 0, 0)"],
["hsl(120 80% 0%)", "rgb(0, 0, 0)"],
["hsl(120 none 50%)", "rgb(128, 128, 128)"],
["hsl(120 0% 50%)", "rgb(128, 128, 128)"],
["hsl(120 100% 50% / none)", "rgba(0, 255, 0, 0)"],
["hsl(120 100% 50% / 0)", "rgba(0, 255, 0, 0)"],
["hsl(none 100% 50%)", "rgb(255, 0, 0)"],
["hsl(0 100% 50%)", "rgb(255, 0, 0)"],
// Test with number components.
["hsl(120 30 50)", "rgb(89, 166, 89)"],
["hsl(120 30 50 / 0.5)", "rgba(89, 166, 89, 0.5)"],
["hsl(120 30% 50)", "rgb(89, 166, 89)"],
["hsl(120 30% 50 / 0.5)", "rgba(89, 166, 89, 0.5)"],
["hsl(120 30 50%)", "rgb(89, 166, 89)"],
["hsl(120 30 50% / 0.5)", "rgba(89, 166, 89, 0.5)"],
["hsl(120 none 50)", "rgb(128, 128, 128)"],
["hsl(120 none 50 / 0.5)", "rgba(128, 128, 128, 0.5)"],
["hsl(120 30 none)", "rgb(0, 0, 0)"],
["hsl(120 30 none / 0.5)", "rgba(0, 0, 0, 0.5)"],
["hsl(120 30 50 / none)", "rgba(89, 166, 89, 0)"],
// Test parse-time clamp of negative saturation to zero
["hsl(0 -50% 40%)", "rgb(102, 102, 102)"],
["hsl(30 -50% 60)", "rgb(153, 153, 153)"],
["hsl(0 -50 40%)", "rgb(102, 102, 102)"],
["hsl(30 -50 60)", "rgb(153, 153, 153)"],
// Test non-finite values. calc(infinity) goes to upper bound while calc(-infinity) and NaN go to the lower bound.
// See: https://github.com/w3c/csswg-drafts/issues/8629
["hsl(calc(infinity) 100% 50%)", "rgb(255, 0, 0)"], // hsl(360 100% 50%)
["hsl(calc(-infinity) 100% 50%)", "rgb(255, 0, 0)"], // hsl(0 100% 50%)
["hsl(calc(0 / 0) 100% 50%)", "rgb(255, 0, 0)"], // hsl(0 100% 50%)
["hsl(90 50% 50% / calc(infinity))", "rgb(128, 191, 64)"], // hsl(90 50% 50%)
["hsl(90 50% 50% / calc(-infinity))", "rgba(128, 191, 64, 0)"], // hsl(90 50% 50% / 0)
["hsl(90 50% 50% / calc(0 / 0))", "rgba(128, 191, 64, 0)"], // hsl(90 50% 50% / 0)
// calc(50% + (sign(1em - 10px) * 10%)) cannot be evaluated eagerly because font relative units are not yet known at parse time.
["hsl(calc(50deg + (sign(1em - 10px) * 10deg)), 0%, 0%, 50%)", "hsl(calc(50deg + (10deg * sign(1em - 10px))) 0 0 / 0.5)"],
["hsla(calc(50deg + (sign(1em - 10px) * 10deg)), 0%, 0%, 50%)", "hsl(calc(50deg + (10deg * sign(1em - 10px))) 0 0 / 0.5)"],
["hsl(calc(50 + (sign(1em - 10px) * 10)), 0%, 0%, 50%)", "hsl(calc(50 + (10 * sign(1em - 10px))) 0 0 / 0.5)"],
["hsla(calc(50 + (sign(1em - 10px) * 10)), 0%, 0%, 50%)", "hsl(calc(50 + (10 * sign(1em - 10px))) 0 0 / 0.5)"],
["hsl(0deg, 0%, 0%, calc(50% + (sign(1em - 10px) * 10%)))", "hsl(0 0 0 / calc(50% + (10% * sign(1em - 10px))))"],
["hsla(0deg, 0%, 0%, calc(50% + (sign(1em - 10px) * 10%)))", "hsl(0 0 0 / calc(50% + (10% * sign(1em - 10px))))"],
["hsl(0, 0%, 0%, calc(50% + (sign(1em - 10px) * 10%)))", "hsl(0 0 0 / calc(50% + (10% * sign(1em - 10px))))"],
["hsla(0, 0%, 0%, calc(50% + (sign(1em - 10px) * 10%)))", "hsl(0 0 0 / calc(50% + (10% * sign(1em - 10px))))"],
["hsl(calc(50deg + (sign(1em - 10px) * 10deg)) 0% 0% / 50%)", "hsl(calc(50deg + (10deg * sign(1em - 10px))) 0 0 / 0.5)"],
["hsla(calc(50deg + (sign(1em - 10px) * 10deg)) 0% 0% / 50%)", "hsl(calc(50deg + (10deg * sign(1em - 10px))) 0 0 / 0.5)"],
["hsl(calc(50 + (sign(1em - 10px) * 10)) 0 0 / 0.5)", "hsl(calc(50 + (10 * sign(1em - 10px))) 0 0 / 0.5)"],
["hsla(calc(50 + (sign(1em - 10px) * 10)) 0 0 / 0.5)", "hsl(calc(50 + (10 * sign(1em - 10px))) 0 0 / 0.5)"],
["hsl(0deg 0% 0% / calc(50% + (sign(1em - 10px) * 10%)))", "hsl(0 0 0 / calc(50% + (10% * sign(1em - 10px))))"],
["hsla(0deg 0% 0% / calc(50% + (sign(1em - 10px) * 10%)))", "hsl(0 0 0 / calc(50% + (10% * sign(1em - 10px))))"],
["hsl(0 0 0 / calc(0.75 + (sign(1em - 10px) * 0.1)))", "hsl(0 0 0 / calc(0.75 + (0.1 * sign(1em - 10px))))"],
["hsla(0 0 0 / calc(0.75 + (sign(1em - 10px) * 0.1)))", "hsl(0 0 0 / calc(0.75 + (0.1 * sign(1em - 10px))))"],
["hsla(calc(50deg + (sign(1em - 10px) * 10deg)) -100 300 / 0.5)", "hsl(calc(50deg + (10deg * sign(1em - 10px))) 0 300 / 0.5)"],
["hsla(calc(50deg + (sign(1em - 10px) * 10deg)) -100% 300% / 0.5)", "hsl(calc(50deg + (10deg * sign(1em - 10px))) 0 300 / 0.5)"],
];
for (const test of tests) {
test_valid_value("color", test[0], test[1], test[2] ? `[${test[2]}]` : undefined);
}
</script>
</body>
</html>