public void test_schemaLocation() {
        if (webXmlDocument == null) {
            return;
        }
        final Element root = webXmlDocument.getDocumentElement();
        final String schemaLocation = root.getAttributeNS("http://www.w3.org/2001/XMLSchema-instance", "schemaLocation");
        assertTrue("schemaLocation should reference web-app_6_1.xsd", schemaLocation.contains("web-app_6_1.xsd"));
    }