@Test
public void testShowArrayRational() throws IOException {

	final Rational[] rArrayTest = { new Rational(1L,1L), new Rational(-1, 2) };
	JsonArrayBuilder b = this.handler.showArray(rArrayTest);
	buildJson(b);
       handler.close();
       
	String result = outString.toString();
	LOGGER.info(FIND + result);
	final String expected = "{\"ARRAY\":[[1,1],[-1,2]]}";
	
    assertEquals(expected, result);
}