plate element must be parsed');

    assert_equals(doc.querySelector('#tbl'), null, 'Table element should not be available');
    assert_equals(doc.querySelector('#tr'), null, 'TR element should not be available');
    assert_equals(doc.querySelector('#td'), null, 'TD element should not be available');

    assert_not_equals(template.content.querySelector('#tbl'), null,
            'Template should contain table element');
    assert_not_equals(template.content.querySelector('#tr'), null,
            'Templ