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28 lines
1 KiB
HTML
28 lines
1 KiB
HTML
<!DOCTYPE html>
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<meta charset="utf-8">
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<link rel="author" title="Myles C. Maxfield" href="mmaxfield@apple.com">
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<link rel="help" href="https://drafts.csswg.org/css-font-loading-3/#dom-fontfaceset-add">
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<meta name="assert" content="Ensure that calling add() with a CSS-connected FontFace throws." />
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<style>
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@font-face {
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font-family: "WebFont";
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src: url("resources/Rochester.otf") format("opentype");
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}
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</style>
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<script>
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test(function(t) {
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let font = document.fonts.keys().next().value;
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let fontFaceSet = new FontFaceSet([]);
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assert_equals(fontFaceSet.size, 0);
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assert_throws_dom("InvalidModificationError", function() { fontFaceSet.add(font); });
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assert_equals(fontFaceSet.size, 0);
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let newFont = new FontFace("MyFont", "url('resources/Rochester.otf')");
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fontFaceSet.add(newFont);
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assert_equals(fontFaceSet.size, 1);
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fontFaceSet.add(newFont);
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assert_equals(fontFaceSet.size, 1);
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});
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</script>
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</html>
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