/****************************************************************************
* Copyright (C) 2012 HS Coburg.
* All rights reserved.
* Contact: ecsec GmbH (info@ecsec.de)
*
* This file is part of the Open eCard App.
*
* GNU General Public License Usage
* This file may be used under the terms of the GNU General Public
* License version 3.0 as published by the Free Software Foundation
* and appearing in the file LICENSE.GPL included in the packaging of
* this file. Please review the following information to ensure the
* GNU General Public License version 3.0 requirements will be met:
* http://www.gnu.org/copyleft/gpl.html.
*
* Other Usage
* Alternatively, this file may be used in accordance with the terms
* and conditions contained in a signed written agreement between
* you and ecsec GmbH.
*
***************************************************************************/
package org.openecard.common.util;
import org.testng.annotations.Test;
import static org.testng.Assert.*;
/**
*
* @author Dirk Petrautzki <petrautzki@hs-coburg.de>
* @author Johannes Schmoelz <johannes.schmoelz@ecsec.de>
*/
public class LongUtilsTest {
@Test
public void testToByteArray() {
byte[] expected = new byte[] { (byte) 0x7F, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF };
assertEquals(expected, LongUtils.toByteArray(Long.MAX_VALUE));
expected = new byte[] { 0x00 };
assertEquals(expected, LongUtils.toByteArray(0));
expected = new byte[] { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
assertEquals(expected, LongUtils.toByteArray(0, true));
expected = new byte[] { 0x00 };
assertEquals(expected, LongUtils.toByteArray(0, false));
expected = new byte[] { (byte) 0x7F, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF };
assertEquals(expected, LongUtils.toByteArray(Long.MAX_VALUE, true));
expected = new byte[] { (byte) 0x7F, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF };
assertEquals(expected, LongUtils.toByteArray(Long.MAX_VALUE, true));
expected = new byte[] { 0x01, 0x00, 0x00, 0x00 };
assertEquals(expected, LongUtils.toByteArray(8, 1));
try {
expected = new byte[] { 0x01, 0x00, 0x00, 0x00 };
assertEquals(expected, LongUtils.toByteArray(8, 0));
fail("A numbits of '0' should give an IllegalArgumentException");
} catch (IllegalArgumentException e) {
// expected
}
try {
expected = new byte[] { 0x01, 0x00, 0x00, 0x00 };
assertEquals(expected, LongUtils.toByteArray(8, -5));
fail("A negative value for numbits should give an IllegalArgumentException");
} catch (IllegalArgumentException e) {
// expected
}
try {
expected = new byte[] { 0x01, 0x00, 0x00, 0x00 };
assertEquals(expected, LongUtils.toByteArray(8, 9));
fail("A value above 8 for numbits should give an IllegalArgumentException");
} catch (IllegalArgumentException e) {
// expected
}
}
}