<html>
<link rel="import" href="../resources/chai.sky" />
<link rel="import" href="../resources/mocha.sky" />
<script>
describe('DOMImplementation', function() {
  it('should let you create a document', function() {
    var doc = document.implementation.createDocument();
    assert.isNotNull(doc, 'createDocument should return a value');
    assert.doesNotThrow(function() {
      doc.registerElement('x-foo');
    }, 'new document should have a registration context');
  });
});
</script>
</html>