protected void assertOutput(String className, String expected, final Module module)
     throws ExecutionException {
   final StringBuffer sb = new StringBuffer();
   ProcessHandler process =
       runProcess(
           className,
           module,
           DefaultRunExecutor.class,
           new ProcessAdapter() {
             @Override
             public void onTextAvailable(ProcessEvent event, Key outputType) {
               if (ProcessOutputTypes.SYSTEM != outputType) {
                 sb.append(event.getText());
               }
             }
           },
           ProgramRunner.PROGRAM_RUNNER_EP.findExtension(DefaultJavaProgramRunner.class));
   process.waitFor();
   assertEquals(expected.trim(), StringUtil.convertLineSeparators(sb.toString().trim()));
 }