@Test
public void testDefaultConstructor() {

	String inputCommand = "py4j.examples.Stack\ne\n";
	try {
		command.execute("i", new BufferedReader(new StringReader(inputCommand)), writer);
		assertEquals("!yro0\n", sWriter.toString());
		assertTrue(gateway.getObject("o0") instanceof Stack);
	} catch (Exception e) {
		e.printStackTrace();
		fail();
	}
}