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48 lines
2.1 KiB
HTML
48 lines
2.1 KiB
HTML
<!DOCTYPE html>
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<title>SyntaxError thrown when matching CSS-wide keyword</title>
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<link rel="help" href="https://drafts.csswg.org/css-font-loading/#font-face-set-load">
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<link rel="help" href="https://drafts.csswg.org/css-font-loading/#find-the-matching-font-faces">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script>
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function load_on_worker(keyword) {
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return new Promise((resolve, reject) =>{
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var blob = new Blob([`
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self.fonts.load('${keyword}').then(
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()=>{ self.postMessage('success') },
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(e)=>{ self.postMessage(e) }
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);
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`]);
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var blob_url = window.URL.createObjectURL(blob);
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let worker = new Worker(blob_url);
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worker.onmessage = msg => {
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if (msg === 'success')
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resolve(msg.data)
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else
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reject(msg.data)
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}
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});
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}
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// https://drafts.csswg.org/css-font-loading/#find-the-matching-font-faces
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// forbids CSS-wide keywords as the value of the font given to the
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// load method (equivalent to the font shorthand). Note that the test
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// for this case will also pass when the system-wide keyword simply
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// isn't supported, since the syntax won't be valid syntax for the
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// 'font' shorthand.
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// https://drafts.csswg.org/css-fonts-4/#family-name-syntax also
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// forbids using the CSS-wide keywords as unquoted keywords within
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// <font-family>.
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for (let [description_prefix, syntax_prefix] of [["", ""], ["value with ", "medium "]]) {
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for (let keyword of ["initial", "inherit", "unset", "default", "revert", "revert-layer"]) {
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promise_test(test => {
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return promise_rejects_dom(test, 'SyntaxError', document.fonts.load(`${syntax_prefix}${keyword}`));
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}, `Loading ${description_prefix}CSS-wide keyword "${keyword}" causes SyntaxError (document)`)
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promise_test(test => {
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return promise_rejects_dom(test, 'SyntaxError', load_on_worker(`${syntax_prefix}${keyword}`));
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}, `Loading ${description_prefix}CSS-wide keyword "${keyword}" causes SyntaxError (worker)`)
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}
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}
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</script>
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