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font-weight-parsing.html
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font-weight-parsing.html
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<!DOCTYPE html>
<html>
<head>
<title>Testing the new font-weight values introduced in CSS Fonts level 4</title>
<link rel="help" href="https://www.w3.org/TR/css-fonts-4/#font-weight-prop" />
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<div id="computedStyleTest">A</div>
<script>
var testContinuousWeights = [
{ weight: "401", isValid: true, message: "Values that are not multiple of 100 should be parsed successfully" },
{ weight: "400.5", isValid: true, message: "Non-integer Values should be parsed successfully" },
{ weight: "1", isValid: true, message: "Minimum allowed value should be parsed successfully" },
{ weight: "0.999", isValid: false, message: "Values below minimum should be rejected" },
{ weight: "-100", isValid: false, message: "Values below zero should be rejected" },
{ weight: "1000", isValid: true, message: "Maximum allowed value should be parsed successfully" },
{ weight: "1000.001", isValid: false, message: "Values above maximum should be rejected" },
{ weight: "calc(100.5)", isValid: true, expectedWeight: "100.5", message: "Simple calc value" },
{ weight: "calc(-100)", isValid: true, expectedWeight: "1", message: "Negative simple calc value (to be clamped)" },
{ weight: "calc(1001)", isValid: true, expectedWeight: "1000", message: "Out-of-range simple calc value (to be clamped)" },
{ weight: "calc(100.5*3 + 50.5)", isValid: true, expectedWeight: "352", message: "Valid calc expression" },
{ weight: "calc(100.5*3 + 800)", isValid: true, expectedWeight: "1000", message: "Valid calc expression with out-of-range value (to be clamped)" },
{ weight: "calc(100.5px + 50.5px)", isValid: false, message: "Valid calc expression with units" },
{ weight: "400 700", isValid: false, message: "Extra number after numeric value" },
{ weight: "400 10px", isValid: false, message: "Extra content after numeric value" },
{ weight: "bold 400", isValid: false, message: "Extra content after keyword value" },
{ weight: "calc(100.5) 400", isValid: false, message: "Extra content after calc value" }
];
testContinuousWeights.forEach(function (element) {
test(() => { assert_equals(window.CSS.supports("font-weight", element.weight), element.isValid, element.message); }, "@supports: " + element.message);
});
testContinuousWeights.forEach(function (element) {
var testElement = document.getElementById("computedStyleTest");
if (element.isValid) {
testElement.style.fontWeight = "300";
testElement.style.fontWeight = element.weight;
var expectedWeight = (element.expectedWeight) ? element.expectedWeight : element.weight;
test(() => { assert_equals(window.getComputedStyle(testElement).fontWeight, expectedWeight, element.message); }, "Computed style: " + element.message);
}
});
</script>
</body>
</html>