PrintStream out = System.out;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
System.setOut(new PrintStream(baos));
CliParser instance = new CliParser();
String[] args = {"-h"};
instance.parse(args);
instance.printHelp();
args[0] = "-ah";
instance.parse(args);
instance.printHelp();
try {
baos.flush();
String text = (new String(baos.toByteArray()));
String[] lines = text.split(System.getProperty("line.separator"));
Assert.assertTrue(lines[0].startsWith("usage: "));