<!DOCTYPE html>
<html>
<head>
<title>Testing @font-face descriptor values introduced in CSS Fonts level 4</title>
<link rel="help" href="https://www.w3.org/TR/css-fonts-4/#font-face-rule" />
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style id="testStyle">
@font-face { font-family: Test; src: local('Courier New'), local('Courier'); }
</style>
</head>
<body>
<div>@font-face descriptor tests</div>
<script>
function updateFontFaceRule(descriptorName, descriptorValue) {
let testRule = document.getElementById("testStyle").sheet.cssRules[0];
testRule.style.fontWeight = "normal";
testRule.style.fontStyle = "normal";
testRule.style.fontStretch = "normal";
assert_equals(testRule.style.fontWeight, "normal", "Can't clear @font-face.");
assert_equals(testRule.style.fontStyle, "normal", "Can't clear @font-face.");
assert_equals(testRule.style.fontStretch, "normal", "Can't clear @font-face.");
testRule.style.fontWeight = "";
testRule.style.fontStyle = "";
testRule.style.fontStretch = "";
assert_true(!testRule.style.fontWeight, "", "Can't clear @font-face.");
assert_true(!testRule.style.fontStyle, "", "Can't clear @font-face.");
assert_true(!testRule.style.fontStretch, "", "Can't clear @font-face.");
testRule.style[descriptorName] = descriptorValue;
return testRule;
}
function testDescriptor(descriptorName, testCases) {
var propertyName = { 'font-weight':'fontWeight', 'font-stretch':'fontStretch', 'font-style':'fontStyle' }[descriptorName];
testCases.forEach(function (testCase) {
test(() => {
let rule = updateFontFaceRule(descriptorName, testCase.value);
if (testCase.isValid) {
assert_not_equals(rule.style[propertyName], "", "Valid value should be accepted.");
let expectedValue = (testCase.expectedValue) ? testCase.expectedValue : testCase.value;
assert_equals(rule.style[propertyName], expectedValue, "Unexpected resulting value.");
}
else {
assert_equals(rule.style[propertyName], "", "No properties should be set.");
}
}, descriptorName + (testCase.isValid ? "(valid): " : "(invalid): ") + testCase.description + ": " + testCase.value);
});
}
testDescriptor("font-weight", [
// Single value, keyword
{ value: "normal", isValid: true, description: "'normal' keyword" },
{ value: "bold", isValid: true, description: "'bold' keyword" },
{ value: "auto", isValid: true, description: "'auto' keyword inside @font-face" },
{ value: "lighter", isValid: false, description: "'lighter' keyword inside @font-face" },
{ value: "bolder", isValid: false, description: "'bolder' keyword inside @font-face" },
{ value: "bold a", isValid: false, description: "Extra content after keyword" },
// Single value, number
{ value: "401", isValid: true, description: "Values that are not multiple of 100 should be parsed successfully" },
{ value: "400.1", isValid: true, description: "Non-integer values should be parsed successfully" },
{ value: "1", isValid: true, description: "Minimum allowed value should be parsed successfully" },
{ value: "0.999", isValid: false, description: "Values below minimum should be rejected" },
{ value: "-100", isValid: false, description: "Values below zero should be rejected" },
{ value: "1000", isValid: true, description: "Maximum allowed value should be parsed successfully" },
{ value: "1000.001", isValid: false, description: "Values above maximum should be rejected" },
{ value: "100 a", isValid: false, description: "Extra content after value" },
// Single value, calc
{ value: "calc(100.5)", isValid: true, expectedValue: "100.5", description: "Simple calc value" },
{ value: "calc(1001)", isValid: true, description: "Out-of-range simple calc value (should be clamped)" },
{ value: "calc(100.5*3 + 50.5)", isValid: true, expectedValue: "352", description: "Valid calc expression" },
{ value: "calc(100.5*3 + 800)", isValid: true, description: "Valid calc expression with out-of-range value (should be clamped)" },
{ value: "calc(100.5px + 50.5px)", isValid: false, description: "Valid calc expression with units" },
// Value range
{ value: "100 900", isValid: true, description: "Simple range" },
{ value: "500 500", isValid: true, expectedValue: "500", description: "Simple range with equal upper and lower bounds" },
{ value: "0.9 100", isValid: false, description: "Lower bound out of range" },
{ value: "100 1001", isValid: false, description: "Upper bound out of range" },
{ value: "calc(100 + 100) 400", isValid: true, expectedValue: "200 400", description: "Lower bound calc()" },
{ value: "200 calc(200 + 200)", isValid: true, expectedValue: "200 400", description: "Upper bound calc()" },
{ value: "calc(100 + 100) calc(200 + 200)", isValid: true, expectedValue: "200 400", description: "Both bounds are calc()" },
{ value: "400 200", isValid: true, expectedValue: "400 200", description: "Bounds out of order are valid" },
{ value: "100 200 300", isValid: false, description: "Extra content after upper bound" },
]);
testDescriptor("font-stretch", [
// Single value, keyword
{ value: "ultra-condensed", isValid: true, description: "'ultra-condensed' keyword" },
{ value: "extra-condensed", isValid: true, description: "'extra-condensed' keyword" },
{ value: "condensed", isValid: true, description: "'condensed' keyword" },
{ value: "semi-condensed", isValid: true, description: "'semi-condensed' keyword" },
{ value: "normal", isValid: true, description: "'normal' keyword" },
{ value: "semi-expanded", isValid: true, description: "'semi-expanded' keyword" },
{ value: "expanded", isValid: true, description: "'expanded' keyword" },
{ value: "extra-expanded", isValid: true, description: "'extra-expanded' keyword" },
{ value: "ultra-expanded", isValid: true, description: "'ultra-expanded' keyword" },
{ value: "expanded a", isValid: false, description: "Extra content after value" },
{ value: "auto", isValid: true, description: "'auto' keyword inside @font-face" },
// Single value, number
{ value: "1%", isValid: true, description:"Legal percentage" },
{ value: "10.5%", isValid: true, description:"Legal percentage" },
{ value: "100%", isValid: true, description:"Legal percentage" },
{ value: "1000%", isValid: true, description:"Legal percentage" },
{ value: "100", isValid: false, description:"Only percentages, not numbers allowed" },
{ value: "-1%", isValid: false, description:"Negative values are illegal" },
{ value: "0%", isValid: true, description:"Zero is legal" },
{ value: "100% a", isValid: false, description:"Extra content after value" },
// Single value, calc
{ value: "calc(200.5%)", isValid: true, expectedValue: "200.5%", description: "Simple calc value" },
{ value: "calc(50%*2 - 20%)", isValid: true, expectedValue: "80%", description: "Valid calc expression" },
{ value: "calc(-100%)", isValid: true, description: "Negative calc value (to be clamped)" },
{ value: "calc(50% - 50%*2)", isValid: true, expectedValue: "calc(-50%)", description: "Negative calc expression (to be clamped)" },
{ value: "calc(100)", isValid: false, description: "Unit-less calc value" },
{ value: "calc(100px)", isValid: false, description: "Calc value with units" },
// Value range
{ value: "100% 200%", isValid: true, description: "Simple range" },
{ value: "100% 100%", isValid: true, expectedValue: "100%", description: "Simple range with equal upper and lower bounds" },
{ value: "-100% 100%", isValid: false, description: "Lower bound out of range" },
{ value: "calc(10% + 10%) 30%", isValid: true, expectedValue: "20% 30%", description: "Lower bound calc()" },
{ value: "10% calc(10% + 10%)", isValid: true, expectedValue: "10% 20%", description: "Upper bound calc()" },
{ value: "calc(10% + 10%) calc(20% + 20%)", isValid: true, expectedValue: "20% 40%", description: "Both bounds are calc()" },
{ value: "200% 100%", isValid: true, expectedValue: "200% 100%", description: "Bounds out of order" },
{ value: "100% 200% 300%", isValid: false, description: "Extra content after upper bound" },
]);
testDescriptor("font-style", [
// Single value, keyword
{ value: "normal", isValid: true, description: "'normal' keyword" },
{ value: "italic", isValid: true, description: "'italic' keyword" },
{ value: "oblique", isValid: true, description: "'oblique' keyword" },
{ value: "auto", isValid: true, description: "'auto' keyword inside @font-face" },
// Single value
{ value: "italic 20deg", isValid: false, description: "'italic' followed by angle" },
{ value: "italic a", isValid: false, description: "Extra content after keyword" },
{ value: "oblique 0deg", isValid: true, description: "'oblique' followed by zero degrees" },
{ value: "oblique 20deg", isValid: true, description: "'oblique' followed by former default 20deg angle" },
{ value: "oblique 90deg", isValid: true, description: "'oblique' followed by maxumum 90 degree angle" },
{ value: "oblique -90deg", isValid: true, description: "'oblique' followed by minimum -90 degree angle" },
{ value: "oblique calc(91deg)", isValid: true, description: "'oblique' followed by calc with out of range value (should be clamped)" },
{ value: "oblique calc(-91deg)", isValid: true, description: "'oblique' followed by calc with out of range value (should be clamped)" },
{ value: "oblique 0rad", isValid: true, expectedValue: "oblique 0deg", description: "'oblique' followed by angle in radians" },
{ value: "oblique 20", isValid: false, description: "'oblique' followed by unit-less number" },
{ value: "oblique 20px", isValid: false, description: "'oblique' followed by non-angle" },
{ value: "oblique a", isValid: false, description: "'oblique' followed by non-number" },
{ value: "oblique -", isValid: false, description: "'oblique' followed by isolated minus" },
{ value: "oblique - 20deg", isValid: false, description: "'oblique' followed by minus and angle separated by space" },
{ value: "oblique -a", isValid: false, description: "'oblique' followed by minus and non-number" },
// Value range
{ value: "oblique 10deg 20deg", isValid: true, description: "Simple range" },
{ value: "oblique 10deg 10deg", isValid: true, expectedValue: "oblique 10deg", description: "Simple range with equal upper and lower bounds" },
{ value: "oblique 20deg 20deg", isValid: true, description: "Simple range with former default angle for both bounds" },
{ value: "oblique 20deg 10deg", isValid: true, expectedValue: "oblique 20deg 10deg", description: "Bounds out of order" },
{ value: "oblique -100deg 20deg", isValid: false, description: "Lower bound out of range" },
{ value: "oblique 20deg 100deg", isValid: false, description: "Upper bound out of range" },
{ value: "oblique 10deg 20deg 30deg", isValid: false, description: "Extra content after upper bound" },
]);
</script>
</body>
</html>
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