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LibWeb: Throw SyntaxError when FontFaceSet contains var

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This commit is contained in:
Gingeh
2025-07-01 19:53:30 +10:00
committed by Sam Atkins
parent 863092afdc
commit 0e3386bb4c
Notes: github-actions[bot] 2025-07-01 10:51:32 +00:00 
Author: https://github.com/Gingeh
Commit: https://github.com/LadybirdBrowser/ladybird/commit/0e3386bb4cb
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5263
Reviewed-by: https://github.com/AtkinsSJ ✅
3 changed files with 55 additions and 3 deletions
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44
Tests/LibWeb/Text/input/wpt-import/css/css-font-loading/fontfaceset-load-var.html Normal file
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<!DOCTYPE html>
<title>SyntaxError thrown when matching loading values with var()</title>
<link rel="help" href="https://drafts.csswg.org/css-font-loading/#font-face-set-load">
<link rel="help" href="https://drafts.csswg.org/css-font-loading/#find-the-matching-font-faces">
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script>
function load_on_worker(keyword) {
return new Promise((resolve, reject) =>{
var blob = new Blob([`
self.fonts.load('${keyword}').then(
()=>{ self.postMessage('success') },
(e)=>{ self.postMessage(e) }
);
`]);
var blob_url = window.URL.createObjectURL(blob);
let worker = new Worker(blob_url);
worker.onmessage = msg => {
if (msg === 'success')
resolve(msg.data)
else
reject(msg.data)
}
});
}
promise_test(test => {
return promise_rejects_dom(test, 'SyntaxError', document.fonts.load('var(--x) serif'));
}, 'Loading "var(--x) serif" causes SyntaxError (document)')
promise_test(test => {
return promise_rejects_dom(test, 'SyntaxError', document.fonts.load('var(--x, 10px) serif'));
}, 'Loading "var(--x, 10px) serif" causes SyntaxError (document)')
promise_test(test => {
return promise_rejects_dom(test, 'SyntaxError', load_on_worker('var(--x) serif'));
}, 'Loading "var(--x) serif" causes SyntaxError (worker)')
promise_test(test => {
return promise_rejects_dom(test, 'SyntaxError', load_on_worker('var(--x, 10px) serif'));
}, 'Loading "var(--x, 10px) serif" causes SyntaxError (worker)')
</script>