@Test
public void testShowRational() throws IOException {

	final Rational r = new Rational(123456,43211);
	JsonArrayBuilder b = this.handler.showRational(r);
	buildJson(b);
       handler.close();
       
	String result = outString.toString();
	LOGGER.info(FIND + result);
	final String expected = "{\"ARRAY\":[123456,43211]}";
	
    assertEquals(expected, result);
}