### Question:
WSDLToIDL extends AbstractCXFToolContainer { public static void main(String[] arguments) { try { run(arguments); } catch (Exception ex) { System.err.println("Error : " + ex.getMessage()); System.err.println(); System.exit(1); } } WSDLToIDL(ToolSpec toolspec); void execute(boolean exitOnFinish); static void run(String[] arguments); static void main(String[] arguments); void checkParams(ErrorVisitor errors);  }### Answer:
@Test public void testDetailOutput() throws Exception { String[] args = new String[] {"-?"}; WSDLToIDL.main(args); assertNotNull(getStdOut()); }
@Test public void testVersionOutput() throws Exception { String[] args = new String[] {"-v"}; WSDLToIDL.main(args); assertNotNull(getStdOut()); }
@Test public void testHelpOutput() throws Exception { String[] args = new String[] {"-help"}; WSDLToIDL.main(args); assertNotNull(getStdOut()); }