@Test
public void testUnknownArgument() {

    final String[] args = new String[]{"-unknown"};
    ParseCommandLineArgsResult ret = Bootstrap.parseCommandLineArgs(args);
    assertThat(ret.isExit()).isTrue();
    assertThat(ret.getExitCode()).isEqualTo(ExitCode.USAGE);
    assertThat(ret.getOptions()).isNull();
}