chromium/third_party/blink/web_tests/fast/css/fontfaceset-load.html

<html>
<head>
<script src="../../resources/js-test.js"></script>
<style>
@font-face {
    font-family: TestFont;
    src: local('Courier New'), local('Cousine-Regular');
}

@font-face {
    font-family: TestFont;
    src: url(../../resources/Ahem.ttf);
    unicode-range: u+41-5a; /* 'A'-'Z' */
}

@font-face {
    font-family: TestFont;
    src: url('resources/DownLoadErrorAhem.otf');
    unicode-range: u+61-7a; /* 'a'-'z' */
}
</style>
<script>
description('Tests load() method of FontFaceSet.');

window.jsTestIsAsync = true;

function step1() {
    document.fonts.load('10px TestFont', 'ABC.').then(step2);
}

function step2(v) {
    value = v;
    shouldBe('value.length', '2');
    shouldBeEqualToString('value[0].unicodeRange', 'U+0-10FFFF');
    shouldBeEqualToString('value[1].unicodeRange', 'U+41-5A');
    shouldBeEqualToString('value[0].status', 'loaded');
    shouldBeEqualToString('value[1].status', 'loaded');
    document.fonts.load('10px TestFont', 'abc.').catch(step3);
}

function step3(v) {
    value = v;
    shouldBeEqualToString('value.name', 'NetworkError');
    document.fonts.load('InvalidFontDescription', 'abc.').catch(step4);
}

function step4(v) {
    value = v;
    shouldBeEqualToString('value.name', 'SyntaxError');
    finishJSTest();
}

if (document.fonts)
    step1();
else {
    testFailed('document.fonts does not exist');
    finishJSTest();
}
</script>
</head>
<body>
</body>
</html>