   () => {
      for (let i = 0; i < testCases.length; ++i) {
        asyncTests[i].step(() => {
          const backgroundSizePx = parseBackgroundSizeInPx(elements[i], '::' + testCases[i]);
          assert_equals(backgroundSizePx, 25);
          asyncTests[i].done();
        });
      }
    },
    () => {
      for (let i = 0; i < testCases.length; ++i) {
        asyncTests[i].step(() => {
          assert_unreached('Failed to load font');
        });
      }
    }
);
</script>
