Throwable supportedThrowable
= supportedThrowable();
Class supportedThrowableClass = supportedThrowable.getClass();
assertTrue(throwableToElement.supports(supportedThrowableClass));
Document dom = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
Element e = throwableToElement.throwableToElement(supportedThrowable, dom);
assertEquals(dom, e.getOwnerDocument());