@Test
    public void testConfigureCommandLineInterface() {
        app.configureCommandLineInterface();

        assertNotNull(app.cliOptions);
        assertTrue(app.cliOptions.hasOption(app.GRAMMAR_OPTIONS[0]));
        assertTrue(app.cliOptions.hasOption(app.DEFINITION_OPTIONS[0]));
        assertTrue(app.cliOptions.hasOption(app.INIT_OPTIONS[0]));
        assertTrue(app.cliOptions.hasOption(app.OUTPUT_OPTIONS[0]));
    }