css/css-font-loading/empty-family-load.html

<!DOCTYPE html>
<meta charset="utf-8">
<link rel="author" title="Dominik Röttsches" href="drott@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-font-loading/#font-face-load">
<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/4510">
<meta name="assert" content="Ensure that an empty font family name loads and resolves to array." />
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
promise_test(function(t) {
  var testFontFace = new FontFace('a', 'url(a)');
  document.fonts.add(testFontFace);
  return document.fonts.load("1px \"\"").then(function(result) {
    assert_true(Array.isArray(result),
                "Resolved promise's value must be an array.") });
})
</script>
</html>