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chromium/third_party/blink/web_tests/external/wpt/css/css-color/parsing/color-valid-color-function.html 

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS Color Level 4: Parsing and serialization of colors using valid color() function syntax</title>
<link rel="help" href="https://drafts.csswg.org/css-color-4/#color-function">
<link rel="help" href="https://drafts.csswg.org/css-color-4/#resolving-color-function-values">
<link rel="help" href="https://drafts.csswg.org/css-color-4/#serializing-color-function-values">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/parsing-testcommon.js"></script>
</head>
<body>
<script>
for (const colorSpace of [ "srgb", "srgb-linear", "a98-rgb", "rec2020", "prophoto-rgb", "display-p3" ]) {
    test_valid_value("color", `color(${colorSpace} 0% 0% 0%)`, `color(${colorSpace} 0 0 0)`);
    test_valid_value("color", `color(${colorSpace} 10% 10% 10%)`, `color(${colorSpace} 0.1 0.1 0.1)`);
    test_valid_value("color", `color(${colorSpace} .2 .2 25%)`, `color(${colorSpace} 0.2 0.2 0.25)`);
    test_valid_value("color", `color(${colorSpace} 0 0 0 / 1)`, `color(${colorSpace} 0 0 0)`);
    test_valid_value("color", `color(${colorSpace} 0% 0 0 / 0.5)`, `color(${colorSpace} 0 0 0 / 0.5)`);
    test_valid_value("color", `color(${colorSpace} 20% 0 10/0.5)`, `color(${colorSpace} 0.2 0 10 / 0.5)`);
    test_valid_value("color", `color(${colorSpace} 20% 0 10/50%)`, `color(${colorSpace} 0.2 0 10 / 0.5)`);
    test_valid_value("color", `color(${colorSpace} 400% 0 10/50%)`, `color(${colorSpace} 4 0 10 / 0.5)`);
    test_valid_value("color", `color(${colorSpace} 50% -160 160)`, `color(${colorSpace} 0.5 -160 160)`);
    test_valid_value("color", `color(${colorSpace} 50% -200 200)`, `color(${colorSpace} 0.5 -200 200)`);
    test_valid_value("color", `color(${colorSpace} 0 0 0 / -10%)`, `color(${colorSpace} 0 0 0 / 0)`);
    test_valid_value("color", `color(${colorSpace} 0 0 0 / 110%)`, `color(${colorSpace} 0 0 0)`);
    test_valid_value("color", `color(${colorSpace} 0 0 0 / 300%)`, `color(${colorSpace} 0 0 0)`);
    test_valid_value("color", `color(${colorSpace} 200 200 200)`, `color(${colorSpace} 200 200 200)`);
    test_valid_value("color", `color(${colorSpace} 200 200 200 / 200)`, `color(${colorSpace} 200 200 200)`);
    test_valid_value("color", `color(${colorSpace} -200 -200 -200)`, `color(${colorSpace} -200 -200 -200)`);
    test_valid_value("color", `color(${colorSpace} -200 -200 -200 / -200)`, `color(${colorSpace} -200 -200 -200 / 0)`);
    test_valid_value("color", `color(${colorSpace} 200% 200% 200%)`, `color(${colorSpace} 2 2 2)`);
    test_valid_value("color", `color(${colorSpace} 200% 200% 200% / 200%)`, `color(${colorSpace} 2 2 2)`);
    test_valid_value("color", `color(${colorSpace} -200% -200% -200% / -200%)`, `color(${colorSpace} -2 -2 -2 / 0)`);
    test_valid_value("color", `color(${colorSpace} calc(0.5 + 1) calc(0.5 - 1) calc(0.5) / calc(-0.5 + 1))`, `color(${colorSpace} 1.5 -0.5 0.5 / 0.5)`);
    test_valid_value("color", `color(${colorSpace} calc(50% * 3) calc(-150% / 3) calc(50%) / calc(-50% * 3))`, `color(${colorSpace} 1.5 -0.5 0.5 / 0)`);

    test_valid_value("color", `color(${colorSpace} none none none / none)`, `color(${colorSpace} none none none / none)`);
    test_valid_value("color", `color(${colorSpace} none none none)`, `color(${colorSpace} none none none)`);
    test_valid_value("color", `color(${colorSpace} 10% none none / none)`, `color(${colorSpace} 0.1 none none / none)`);
    test_valid_value("color", `color(${colorSpace} none none none / 0.5)`, `color(${colorSpace} none none none / 0.5)`);
    test_valid_value("color", `color(${colorSpace} 0 0 0 / none)`, `color(${colorSpace} 0 0 0 / none)`);

    test_valid_value("color", `color(${colorSpace} 0 calc(infinity) 0)`, `color(${colorSpace} 0 calc(infinity) 0)`);
    test_valid_value("color", `color(${colorSpace} 0 calc(-infinity) 0)`, `color(${colorSpace} 0 calc(-infinity) 0)`);
    test_valid_value("color", `color(${colorSpace} calc(NaN) 0 0)`, `color(${colorSpace} calc(NaN) 0 0)`);
    test_valid_value("color", `color(${colorSpace} calc(0 / 0) 0 0)`, `color(${colorSpace} calc(NaN) 0 0)`);
}

for (const colorSpace of [ "xyz", "xyz-d50", "xyz-d65" ]) {
    const resultColorSpace = colorSpace == "xyz" ? "xyz-d65" : colorSpace;

    test_valid_value("color", `color(${colorSpace} 0 0 0)`, `color(${resultColorSpace} 0 0 0)`);
    test_valid_value("color", `color(${colorSpace} 0 0 0 / 1)`, `color(${resultColorSpace} 0 0 0)`);
    test_valid_value("color", `color(${colorSpace} 1 1 1)`, `color(${resultColorSpace} 1 1 1)`);
    test_valid_value("color", `color(${colorSpace} 1 1 1 / 1)`, `color(${resultColorSpace} 1 1 1)`);
    test_valid_value("color", `color(${colorSpace} -1 -1 -1)`, `color(${resultColorSpace} -1 -1 -1)`);
    test_valid_value("color", `color(${colorSpace} 0.1 0.1 0.1)`, `color(${resultColorSpace} 0.1 0.1 0.1)`);
    test_valid_value("color", `color(${colorSpace} 10 10 10)`, `color(${resultColorSpace} 10 10 10)`);
    test_valid_value("color", `color(${colorSpace} .2 .2 .25)`, `color(${resultColorSpace} 0.2 0.2 0.25)`);
    test_valid_value("color", `color(${colorSpace} 0 0 0 / 0.5)`, `color(${resultColorSpace} 0 0 0 / 0.5)`);
    test_valid_value("color", `color(${colorSpace} .20 0 10/0.5)`, `color(${resultColorSpace} 0.2 0 10 / 0.5)`);
    test_valid_value("color", `color(${colorSpace} .20 0 10/50%)`, `color(${resultColorSpace} 0.2 0 10 / 0.5)`);
    test_valid_value("color", `color(${colorSpace} 0 0 0 / -10%)`, `color(${resultColorSpace} 0 0 0 / 0)`);
    test_valid_value("color", `color(${colorSpace} 0 0 0 / 110%)`, `color(${resultColorSpace} 0 0 0)`);
    test_valid_value("color", `color(${colorSpace} 0 0 0 / 300%)`, `color(${resultColorSpace} 0 0 0)`);
    test_valid_value("color", `color(${colorSpace} calc(0.5 + 1) calc(0.5 - 1) calc(0.5) / calc(-0.5 + 1))`, `color(${resultColorSpace} 1.5 -0.5 0.5 / 0.5)`);

    test_valid_value("color", `color(${colorSpace} none none none / none)`, `color(${resultColorSpace} none none none / none)`);
    test_valid_value("color", `color(${colorSpace} none none none)`, `color(${resultColorSpace} none none none)`);
    test_valid_value("color", `color(${colorSpace} 0.2 none none / none)`, `color(${resultColorSpace} 0.2 none none / none)`);
    test_valid_value("color", `color(${colorSpace} none none none / 0.5)`, `color(${resultColorSpace} none none none / 0.5)`);
    test_valid_value("color", `color(${colorSpace} 0 0 0 / none)`, `color(${resultColorSpace} 0 0 0 / none)`);

    test_valid_value("color", `color(${colorSpace} 0 calc(infinity) 0)`, `color(${resultColorSpace} 0 calc(infinity) 0)`);
    test_valid_value("color", `color(${colorSpace} 0 calc(-infinity) 0)`, `color(${resultColorSpace} 0 calc(-infinity) 0)`);
    test_valid_value("color", `color(${colorSpace} calc(NaN) 0 0)`, `color(${resultColorSpace} calc(NaN) 0 0)`);
    test_valid_value("color", `color(${colorSpace} calc(0 / 0) 0 0)`, `color(${resultColorSpace} calc(NaN) 0 0)`);
}
</script>
</body>
</html>