<!DOCTYPE HTML>
	<title>document.fonts.ready resolves after layout depending on loaded fonts</title>
	<link rel="help" href="https://drafts.csswg.org/css-font-loading/#fontfaceset-pending-on-the-environment">
	<script src="/resources/testharness.js"></script>
	<script src="/resources/testharnessreport.js"></script>
	<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
	<style>
	  #foo {
	      font: 100px/1 Ahem;
	  }
	</style>
	<div id="log"></div>
	<span id="foo">X</span>
	<script>
	  // The purpose of this test is to ensure that testharness.js tests can use
	  // `document.fonts.ready` to wait for a web font to load, without having to
	  // wait for the window load event before or requestAnimationFrame after.
	  //
	  // The spec says that a FontFaceSet is "pending on the environment" if "the
	  // document has pending layout operations which might cause the user agent to
	  // request a font, or which depend on recently-loaded fonts", and both are
	  // assumed to hold true in this test.
	  async_test(t => {
	    assert_equals(document.fonts.size, 1, 'one font is pending');
	    document.fonts.ready.then(t.step_func_done(() => {
	      const span = document.getElementById('foo');
	      const rect = span.getBoundingClientRect();
	      // If Ahem has loaded, the X will be 100px wide.
	      assert_equals(rect.width, 100, 'span is 100px wide');
	    }));
	  });
	</script>
