88 lines
2.2 KiB
HTML
88 lines
2.2 KiB
HTML
<!DOCTYPE html>
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<meta charset="UTF-8">
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<title>CSS Values Test: computed value of calc() values using multiplication/division with mixed units</title>
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<link rel="help" href="https://www.w3.org/TR/css-values-4/#calc-computed-value">
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<meta name="flags" content="">
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<meta content="This meta-test checks for the resolution and absolutization of computed values with mixed units to 'px' when multiplication/division is used." name="assert">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<style>
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html {
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font-size: 30px;
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}
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body {
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font-size: 16px;
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line-height: 1.25; /* computed value: 20px */
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width: 520px;
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height: 500px;
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margin: 20px;
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}
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div#target {
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height: 100px;
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width: 100px;
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}
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</style>
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<div id="target"></div>
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<script>
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function startTesting() {
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var targetElement = document.getElementById("target");
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function verifyComputedStyle(property_name, specified_value, expected_value) {
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test(function() {
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targetElement.style.setProperty(property_name, "initial");
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targetElement.style.setProperty(property_name, specified_value);
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assert_equals(getComputedStyle(targetElement)[property_name], expected_value);
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}, `testing ${property_name}: ${specified_value}`);
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}
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verifyComputedStyle("width", "calc(5px * 10lh / 1px)", "1000px");
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/*
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10lh = 200px
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5px * 200px / 1px = 1000px^2 / 1px = 1000px
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Total = 1000px
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*/
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verifyComputedStyle("width", "calc(20% * 0.5em / 1px)", "832px");
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/*
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20% of 520px = 104px
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0.5em = 8px
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104px * 8px / 1px = 832px^2 / 1px = 832px
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Total = 832px
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*/
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verifyComputedStyle("width", "calc(4px * 4em / 1px)", "256px");
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/*
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4em = 64px
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4px * 64px / 1px = 256px^2 / 1px = 256px
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Total = 256px
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*/
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verifyComputedStyle("width", "calc(400px / 4lh * 1px)", "5px");
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/*
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4lh = 80px
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400px / 80px * 1px = 5 * 1px = 5px
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Total = 5px
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*/
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verifyComputedStyle("width", "calc(20% / 0.5em * 1px)", "13px");
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/*
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20% of 520px = 104px
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0.5em = 8px
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104px / 8px * 1px = 13 * 1px = 13px
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Total = 13px
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*/
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}
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startTesting();
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</script>
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