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https://github.com/LadybirdBrowser/ladybird
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This returns true if the given text can be rendered with the fonts in the set that are fully loaded.
31 lines
1.1 KiB
HTML
31 lines
1.1 KiB
HTML
<!DOCTYPE html>
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<script src="../include.js"></script>
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<script>
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promiseTest(async () => {
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const fontFaceSet = document.fonts;
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try {
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fontFaceSet.check("invalid");
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println("Check invalid font: FAIL");
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} catch (e) {
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println(`Check invalid font: ${e.name === "SyntaxError" ? "PASS" : "FAIL"}`);
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}
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try {
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fontFaceSet.check("revert");
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println("Check CSS keyword as font: FAIL");
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} catch (e) {
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println(`Check CSS keyword as font: ${e.name === "SyntaxError" ? "PASS" : "FAIL"}`);
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}
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println(`Check non-existent font: ${fontFaceSet.check("10px NonExistentFont") === true ? "PASS" : "FAIL"}`);
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const fontFace = new FontFace("Hash Sans", "url(../../../Assets/HashSans.woff)");
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fontFaceSet.add(fontFace);
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println(`Check unloaded font: ${fontFaceSet.check("1em Hash Sans") === false ? "PASS" : "FAIL"}`);
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await fontFace.load();
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println(`Check loaded font: ${fontFaceSet.check("1em Hash Sans") === true ? "PASS" : "FAIL"}`);
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});
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</script>
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