org.eclipse.jgit.test/tst/org/eclipse/jgit/util/NBTest.java - jgit - Git at Google

 /*
  * Copyright (C) 2008, 2015 Google Inc.
  * and other copyright owners as documented in the project's IP log.
  *
  * This program and the accompanying materials are made available
  * under the terms of the Eclipse Distribution License v1.0 which
  * accompanies this distribution, is reproduced below, and is
  * available at http://www.eclipse.org/org/documents/edl-v10.php
  *
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or
  * without modification, are permitted provided that the following
  * conditions are met:
  *
  * - Redistributions of source code must retain the above copyright
  *   notice, this list of conditions and the following disclaimer.
  *
  * - Redistributions in binary form must reproduce the above
  *   copyright notice, this list of conditions and the following
  *   disclaimer in the documentation and/or other materials provided
  *   with the distribution.
  *
  * - Neither the name of the Eclipse Foundation, Inc. nor the
  *   names of its contributors may be used to endorse or promote
  *   products derived from this software without specific prior
  *   written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
  * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */

 package org.eclipse.jgit.util;

 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;

 import org.junit.Test;

 public class NBTest {
 	@Test
 	public void testCompareUInt32() {
 		assertTrue(NB.compareUInt32(0, 0) == 0);
 		assertTrue(NB.compareUInt32(1, 0) > 0);
 		assertTrue(NB.compareUInt32(0, 1) < 0);
 		assertTrue(NB.compareUInt32(-1, 0) > 0);
 		assertTrue(NB.compareUInt32(0, -1) < 0);
 		assertTrue(NB.compareUInt32(-1, 1) > 0);
 		assertTrue(NB.compareUInt32(1, -1) < 0);
 	}

 	@Test
 	public void testCompareUInt64() {
 		assertTrue(NB.compareUInt64(0, 0) == 0);
 		assertTrue(NB.compareUInt64(1, 0) > 0);
 		assertTrue(NB.compareUInt64(0, 1) < 0);
 		assertTrue(NB.compareUInt64(-1, 0) > 0);
 		assertTrue(NB.compareUInt64(0, -1) < 0);
 		assertTrue(NB.compareUInt64(-1, 1) > 0);
 		assertTrue(NB.compareUInt64(1, -1) < 0);
 	}

 	@Test
 	public void testDecodeUInt16() {
 		assertEquals(0, NB.decodeUInt16(b(0, 0), 0));
 		assertEquals(0, NB.decodeUInt16(padb(3, 0, 0), 3));

 		assertEquals(3, NB.decodeUInt16(b(0, 3), 0));
 		assertEquals(3, NB.decodeUInt16(padb(3, 0, 3), 3));

 		assertEquals(0xde03, NB.decodeUInt16(b(0xde, 3), 0));
 		assertEquals(0xde03, NB.decodeUInt16(padb(3, 0xde, 3), 3));

 		assertEquals(0x03de, NB.decodeUInt16(b(3, 0xde), 0));
 		assertEquals(0x03de, NB.decodeUInt16(padb(3, 3, 0xde), 3));

 		assertEquals(0xffff, NB.decodeUInt16(b(0xff, 0xff), 0));
 		assertEquals(0xffff, NB.decodeUInt16(padb(3, 0xff, 0xff), 3));
 	}

 	@Test
 	public void testDecodeUInt24() {
 		assertEquals(0, NB.decodeUInt24(b(0, 0, 0), 0));
 		assertEquals(0, NB.decodeUInt24(padb(3, 0, 0, 0), 3));

 		assertEquals(3, NB.decodeUInt24(b(0, 0, 3), 0));
 		assertEquals(3, NB.decodeUInt24(padb(3, 0, 0, 3), 3));

 		assertEquals(0xcede03, NB.decodeUInt24(b(0xce, 0xde, 3), 0));
 		assertEquals(0xbade03, NB.decodeUInt24(padb(3, 0xba, 0xde, 3), 3));

 		assertEquals(0x03bade, NB.decodeUInt24(b(3, 0xba, 0xde), 0));
 		assertEquals(0x03bade, NB.decodeUInt24(padb(3, 3, 0xba, 0xde), 3));

 		assertEquals(0xffffff, NB.decodeUInt24(b(0xff, 0xff, 0xff), 0));
 		assertEquals(0xffffff, NB.decodeUInt24(padb(3, 0xff, 0xff, 0xff), 3));
 	}

 	@Test
 	public void testDecodeInt32() {
 		assertEquals(0, NB.decodeInt32(b(0, 0, 0, 0), 0));
 		assertEquals(0, NB.decodeInt32(padb(3, 0, 0, 0, 0), 3));

 		assertEquals(3, NB.decodeInt32(b(0, 0, 0, 3), 0));
 		assertEquals(3, NB.decodeInt32(padb(3, 0, 0, 0, 3), 3));

 		assertEquals(0xdeadbeef, NB.decodeInt32(b(0xde, 0xad, 0xbe, 0xef), 0));
 		assertEquals(0xdeadbeef, NB.decodeInt32(
 				padb(3, 0xde, 0xad, 0xbe, 0xef), 3));

 		assertEquals(0x0310adef, NB.decodeInt32(b(0x03, 0x10, 0xad, 0xef), 0));
 		assertEquals(0x0310adef, NB.decodeInt32(
 				padb(3, 0x03, 0x10, 0xad, 0xef), 3));

 		assertEquals(0xffffffff, NB.decodeInt32(b(0xff, 0xff, 0xff, 0xff), 0));
 		assertEquals(0xffffffff, NB.decodeInt32(
 				padb(3, 0xff, 0xff, 0xff, 0xff), 3));
 	}

 	@Test
 	public void testDecodeUInt32() {
 		assertEquals(0L, NB.decodeUInt32(b(0, 0, 0, 0), 0));
 		assertEquals(0L, NB.decodeUInt32(padb(3, 0, 0, 0, 0), 3));

 		assertEquals(3L, NB.decodeUInt32(b(0, 0, 0, 3), 0));
 		assertEquals(3L, NB.decodeUInt32(padb(3, 0, 0, 0, 3), 3));

 		assertEquals(0xdeadbeefL, NB.decodeUInt32(b(0xde, 0xad, 0xbe, 0xef), 0));
 		assertEquals(0xdeadbeefL, NB.decodeUInt32(padb(3, 0xde, 0xad, 0xbe,
 				0xef), 3));

 		assertEquals(0x0310adefL, NB.decodeUInt32(b(0x03, 0x10, 0xad, 0xef), 0));
 		assertEquals(0x0310adefL, NB.decodeUInt32(padb(3, 0x03, 0x10, 0xad,
 				0xef), 3));

 		assertEquals(0xffffffffL, NB.decodeUInt32(b(0xff, 0xff, 0xff, 0xff), 0));
 		assertEquals(0xffffffffL, NB.decodeUInt32(padb(3, 0xff, 0xff, 0xff,
 				0xff), 3));
 	}

 	@Test
 	public void testDecodeUInt64() {
 		assertEquals(0L, NB.decodeUInt64(b(0, 0, 0, 0, 0, 0, 0, 0), 0));
 		assertEquals(0L, NB.decodeUInt64(padb(3, 0, 0, 0, 0, 0, 0, 0, 0), 3));

 		assertEquals(3L, NB.decodeUInt64(b(0, 0, 0, 0, 0, 0, 0, 3), 0));
 		assertEquals(3L, NB.decodeUInt64(padb(3, 0, 0, 0, 0, 0, 0, 0, 3), 3));

 		assertEquals(0xdeadbeefL, NB.decodeUInt64(b(0, 0, 0, 0, 0xde, 0xad,
 				0xbe, 0xef), 0));
 		assertEquals(0xdeadbeefL, NB.decodeUInt64(padb(3, 0, 0, 0, 0, 0xde,
 				0xad, 0xbe, 0xef), 3));

 		assertEquals(0x0310adefL, NB.decodeUInt64(b(0, 0, 0, 0, 0x03, 0x10,
 				0xad, 0xef), 0));
 		assertEquals(0x0310adefL, NB.decodeUInt64(padb(3, 0, 0, 0, 0, 0x03,
 				0x10, 0xad, 0xef), 3));

 		assertEquals(0xc0ffee78deadbeefL, NB.decodeUInt64(b(0xc0, 0xff, 0xee,
 				0x78, 0xde, 0xad, 0xbe, 0xef), 0));
 		assertEquals(0xc0ffee78deadbeefL, NB.decodeUInt64(padb(3, 0xc0, 0xff,
 				0xee, 0x78, 0xde, 0xad, 0xbe, 0xef), 3));

 		assertEquals(0x00000000ffffffffL, NB.decodeUInt64(b(0, 0, 0, 0, 0xff,
 				0xff, 0xff, 0xff), 0));
 		assertEquals(0x00000000ffffffffL, NB.decodeUInt64(padb(3, 0, 0, 0, 0,
 				0xff, 0xff, 0xff, 0xff), 3));
 		assertEquals(0xffffffffffffffffL, NB.decodeUInt64(b(0xff, 0xff, 0xff,
 				0xff, 0xff, 0xff, 0xff, 0xff), 0));
 		assertEquals(0xffffffffffffffffL, NB.decodeUInt64(padb(3, 0xff, 0xff,
 				0xff, 0xff, 0xff, 0xff, 0xff, 0xff), 3));
 	}

 	@Test
 	public void testEncodeInt16() {
 		final byte[] out = new byte[16];

 		prepareOutput(out);
 		NB.encodeInt16(out, 0, 0);
 		assertOutput(b(0, 0), out, 0);

 		prepareOutput(out);
 		NB.encodeInt16(out, 3, 0);
 		assertOutput(b(0, 0), out, 3);

 		prepareOutput(out);
 		NB.encodeInt16(out, 0, 3);
 		assertOutput(b(0, 3), out, 0);

 		prepareOutput(out);
 		NB.encodeInt16(out, 3, 3);
 		assertOutput(b(0, 3), out, 3);

 		prepareOutput(out);
 		NB.encodeInt16(out, 0, 0xdeac);
 		assertOutput(b(0xde, 0xac), out, 0);

 		prepareOutput(out);
 		NB.encodeInt16(out, 3, 0xdeac);
 		assertOutput(b(0xde, 0xac), out, 3);

 		prepareOutput(out);
 		NB.encodeInt16(out, 3, -1);
 		assertOutput(b(0xff, 0xff), out, 3);
 	}

 	@Test
 	public void testEncodeInt24() {
 		byte[] out = new byte[16];

 		prepareOutput(out);
 		NB.encodeInt24(out, 0, 0);
 		assertOutput(b(0, 0, 0), out, 0);

 		prepareOutput(out);
 		NB.encodeInt24(out, 3, 0);
 		assertOutput(b(0, 0, 0), out, 3);

 		prepareOutput(out);
 		NB.encodeInt24(out, 0, 3);
 		assertOutput(b(0, 0, 3), out, 0);

 		prepareOutput(out);
 		NB.encodeInt24(out, 3, 3);
 		assertOutput(b(0, 0, 3), out, 3);

 		prepareOutput(out);
 		NB.encodeInt24(out, 0, 0xc0deac);
 		assertOutput(b(0xc0, 0xde, 0xac), out, 0);

 		prepareOutput(out);
 		NB.encodeInt24(out, 3, 0xbadeac);
 		assertOutput(b(0xba, 0xde, 0xac), out, 3);

 		prepareOutput(out);
 		NB.encodeInt24(out, 3, -1);
 		assertOutput(b(0xff, 0xff, 0xff), out, 3);
 	}

 	@Test
 	public void testEncodeInt32() {
 		final byte[] out = new byte[16];

 		prepareOutput(out);
 		NB.encodeInt32(out, 0, 0);
 		assertOutput(b(0, 0, 0, 0), out, 0);

 		prepareOutput(out);
 		NB.encodeInt32(out, 3, 0);
 		assertOutput(b(0, 0, 0, 0), out, 3);

 		prepareOutput(out);
 		NB.encodeInt32(out, 0, 3);
 		assertOutput(b(0, 0, 0, 3), out, 0);

 		prepareOutput(out);
 		NB.encodeInt32(out, 3, 3);
 		assertOutput(b(0, 0, 0, 3), out, 3);

 		prepareOutput(out);
 		NB.encodeInt32(out, 0, 0xdeac);
 		assertOutput(b(0, 0, 0xde, 0xac), out, 0);

 		prepareOutput(out);
 		NB.encodeInt32(out, 3, 0xdeac);
 		assertOutput(b(0, 0, 0xde, 0xac), out, 3);

 		prepareOutput(out);
 		NB.encodeInt32(out, 0, 0xdeac9853);
 		assertOutput(b(0xde, 0xac, 0x98, 0x53), out, 0);

 		prepareOutput(out);
 		NB.encodeInt32(out, 3, 0xdeac9853);
 		assertOutput(b(0xde, 0xac, 0x98, 0x53), out, 3);

 		prepareOutput(out);
 		NB.encodeInt32(out, 3, -1);
 		assertOutput(b(0xff, 0xff, 0xff, 0xff), out, 3);
 	}

 	@Test
 	public void testEncodeInt64() {
 		final byte[] out = new byte[16];

 		prepareOutput(out);
 		NB.encodeInt64(out, 0, 0L);
 		assertOutput(b(0, 0, 0, 0, 0, 0, 0, 0), out, 0);

 		prepareOutput(out);
 		NB.encodeInt64(out, 3, 0L);
 		assertOutput(b(0, 0, 0, 0, 0, 0, 0, 0), out, 3);

 		prepareOutput(out);
 		NB.encodeInt64(out, 0, 3L);
 		assertOutput(b(0, 0, 0, 0, 0, 0, 0, 3), out, 0);

 		prepareOutput(out);
 		NB.encodeInt64(out, 3, 3L);
 		assertOutput(b(0, 0, 0, 0, 0, 0, 0, 3), out, 3);

 		prepareOutput(out);
 		NB.encodeInt64(out, 0, 0xdeacL);
 		assertOutput(b(0, 0, 0, 0, 0, 0, 0xde, 0xac), out, 0);

 		prepareOutput(out);
 		NB.encodeInt64(out, 3, 0xdeacL);
 		assertOutput(b(0, 0, 0, 0, 0, 0, 0xde, 0xac), out, 3);

 		prepareOutput(out);
 		NB.encodeInt64(out, 0, 0xdeac9853L);
 		assertOutput(b(0, 0, 0, 0, 0xde, 0xac, 0x98, 0x53), out, 0);

 		prepareOutput(out);
 		NB.encodeInt64(out, 3, 0xdeac9853L);
 		assertOutput(b(0, 0, 0, 0, 0xde, 0xac, 0x98, 0x53), out, 3);

 		prepareOutput(out);
 		NB.encodeInt64(out, 0, 0xac431242deac9853L);
 		assertOutput(b(0xac, 0x43, 0x12, 0x42, 0xde, 0xac, 0x98, 0x53), out, 0);

 		prepareOutput(out);
 		NB.encodeInt64(out, 3, 0xac431242deac9853L);
 		assertOutput(b(0xac, 0x43, 0x12, 0x42, 0xde, 0xac, 0x98, 0x53), out, 3);

 		prepareOutput(out);
 		NB.encodeInt64(out, 3, -1L);
 		assertOutput(b(0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff), out, 3);
 	}

 	private static void prepareOutput(byte[] buf) {
 		for (int i = 0; i < buf.length; i++)
 			buf[i] = (byte) (0x77 + i);
 	}

 	private static void assertOutput(final byte[] expect, final byte[] buf,
 			final int offset) {
 		for (int i = 0; i < offset; i++)
 			assertEquals((byte) (0x77 + i), buf[i]);
 		for (int i = 0; i < expect.length; i++)
 			assertEquals(expect[i], buf[offset + i]);
 		for (int i = offset + expect.length; i < buf.length; i++)
 			assertEquals((byte) (0x77 + i), buf[i]);
 	}

 	private static byte[] b(int a, int b) {
 		return new byte[] { (byte) a, (byte) b };
 	}

 	private static byte[] padb(int len, int a, int b) {
 		final byte[] r = new byte[len + 2];
 		for (int i = 0; i < len; i++)
 			r[i] = (byte) 0xaf;
 		r[len] = (byte) a;
 		r[len + 1] = (byte) b;
 		return r;
 	}

 	private static byte[] b(int a, int b, int c) {
 		return new byte[] { (byte) a, (byte) b, (byte) c };
 	}

 	private static byte[] b(int a, int b, int c, int d) {
 		return new byte[] { (byte) a, (byte) b, (byte) c, (byte) d };
 	}

 	private static byte[] padb(int len, int a, int b, int c) {
 		final byte[] r = new byte[len + 4];
 		for (int i = 0; i < len; i++)
 			r[i] = (byte) 0xaf;
 		r[len] = (byte) a;
 		r[len + 1] = (byte) b;
 		r[len + 2] = (byte) c;
 		return r;
 	}

 	private static byte[] padb(final int len, final int a, final int b,
 			final int c, final int d) {
 		final byte[] r = new byte[len + 4];
 		for (int i = 0; i < len; i++)
 			r[i] = (byte) 0xaf;
 		r[len] = (byte) a;
 		r[len + 1] = (byte) b;
 		r[len + 2] = (byte) c;
 		r[len + 3] = (byte) d;
 		return r;
 	}

 	private static byte[] b(final int a, final int b, final int c, final int d,
 			final int e, final int f, final int g, final int h) {
 		return new byte[] { (byte) a, (byte) b, (byte) c, (byte) d, (byte) e,
 				(byte) f, (byte) g, (byte) h };
 	}

 	private static byte[] padb(final int len, final int a, final int b,
 			final int c, final int d, final int e, final int f, final int g,
 			final int h) {
 		final byte[] r = new byte[len + 8];
 		for (int i = 0; i < len; i++)
 			r[i] = (byte) 0xaf;
 		r[len] = (byte) a;
 		r[len + 1] = (byte) b;
 		r[len + 2] = (byte) c;
 		r[len + 3] = (byte) d;
 		r[len + 4] = (byte) e;
 		r[len + 5] = (byte) f;
 		r[len + 6] = (byte) g;
 		r[len + 7] = (byte) h;
 		return r;
 	}
 }
	/*
	* Copyright (C) 2008, 2015 Google Inc.
	* and other copyright owners as documented in the project's IP log.
	*
	* This program and the accompanying materials are made available
	* under the terms of the Eclipse Distribution License v1.0 which
	* accompanies this distribution, is reproduced below, and is
	* available at http://www.eclipse.org/org/documents/edl-v10.php
	*
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or
	* without modification, are permitted provided that the following
	* conditions are met:
	*
	* - Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	*
	* - Redistributions in binary form must reproduce the above
	* copyright notice, this list of conditions and the following
	* disclaimer in the documentation and/or other materials provided
	* with the distribution.
	*
	* - Neither the name of the Eclipse Foundation, Inc. nor the
	* names of its contributors may be used to endorse or promote
	* products derived from this software without specific prior
	* written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
	* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
	* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
	* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
	* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*/

	package org.eclipse.jgit.util;

	import static org.junit.Assert.assertEquals;
	import static org.junit.Assert.assertTrue;

	import org.junit.Test;

	public class NBTest {
	@Test
	public void testCompareUInt32() {
	assertTrue(NB.compareUInt32(0, 0) == 0);
	assertTrue(NB.compareUInt32(1, 0) > 0);
	assertTrue(NB.compareUInt32(0, 1) < 0);
	assertTrue(NB.compareUInt32(-1, 0) > 0);
	assertTrue(NB.compareUInt32(0, -1) < 0);
	assertTrue(NB.compareUInt32(-1, 1) > 0);
	assertTrue(NB.compareUInt32(1, -1) < 0);
	}

	@Test
	public void testCompareUInt64() {
	assertTrue(NB.compareUInt64(0, 0) == 0);
	assertTrue(NB.compareUInt64(1, 0) > 0);
	assertTrue(NB.compareUInt64(0, 1) < 0);
	assertTrue(NB.compareUInt64(-1, 0) > 0);
	assertTrue(NB.compareUInt64(0, -1) < 0);
	assertTrue(NB.compareUInt64(-1, 1) > 0);
	assertTrue(NB.compareUInt64(1, -1) < 0);
	}

	@Test
	public void testDecodeUInt16() {
	assertEquals(0, NB.decodeUInt16(b(0, 0), 0));
	assertEquals(0, NB.decodeUInt16(padb(3, 0, 0), 3));

	assertEquals(3, NB.decodeUInt16(b(0, 3), 0));
	assertEquals(3, NB.decodeUInt16(padb(3, 0, 3), 3));

	assertEquals(0xde03, NB.decodeUInt16(b(0xde, 3), 0));
	assertEquals(0xde03, NB.decodeUInt16(padb(3, 0xde, 3), 3));

	assertEquals(0x03de, NB.decodeUInt16(b(3, 0xde), 0));
	assertEquals(0x03de, NB.decodeUInt16(padb(3, 3, 0xde), 3));

	assertEquals(0xffff, NB.decodeUInt16(b(0xff, 0xff), 0));
	assertEquals(0xffff, NB.decodeUInt16(padb(3, 0xff, 0xff), 3));
	}

	@Test
	public void testDecodeUInt24() {
	assertEquals(0, NB.decodeUInt24(b(0, 0, 0), 0));
	assertEquals(0, NB.decodeUInt24(padb(3, 0, 0, 0), 3));

	assertEquals(3, NB.decodeUInt24(b(0, 0, 3), 0));
	assertEquals(3, NB.decodeUInt24(padb(3, 0, 0, 3), 3));

	assertEquals(0xcede03, NB.decodeUInt24(b(0xce, 0xde, 3), 0));
	assertEquals(0xbade03, NB.decodeUInt24(padb(3, 0xba, 0xde, 3), 3));

	assertEquals(0x03bade, NB.decodeUInt24(b(3, 0xba, 0xde), 0));
	assertEquals(0x03bade, NB.decodeUInt24(padb(3, 3, 0xba, 0xde), 3));

	assertEquals(0xffffff, NB.decodeUInt24(b(0xff, 0xff, 0xff), 0));
	assertEquals(0xffffff, NB.decodeUInt24(padb(3, 0xff, 0xff, 0xff), 3));
	}

	@Test
	public void testDecodeInt32() {
	assertEquals(0, NB.decodeInt32(b(0, 0, 0, 0), 0));
	assertEquals(0, NB.decodeInt32(padb(3, 0, 0, 0, 0), 3));

	assertEquals(3, NB.decodeInt32(b(0, 0, 0, 3), 0));
	assertEquals(3, NB.decodeInt32(padb(3, 0, 0, 0, 3), 3));

	assertEquals(0xdeadbeef, NB.decodeInt32(b(0xde, 0xad, 0xbe, 0xef), 0));
	assertEquals(0xdeadbeef, NB.decodeInt32(
	padb(3, 0xde, 0xad, 0xbe, 0xef), 3));

	assertEquals(0x0310adef, NB.decodeInt32(b(0x03, 0x10, 0xad, 0xef), 0));
	assertEquals(0x0310adef, NB.decodeInt32(
	padb(3, 0x03, 0x10, 0xad, 0xef), 3));

	assertEquals(0xffffffff, NB.decodeInt32(b(0xff, 0xff, 0xff, 0xff), 0));
	assertEquals(0xffffffff, NB.decodeInt32(
	padb(3, 0xff, 0xff, 0xff, 0xff), 3));
	}

	@Test
	public void testDecodeUInt32() {
	assertEquals(0L, NB.decodeUInt32(b(0, 0, 0, 0), 0));
	assertEquals(0L, NB.decodeUInt32(padb(3, 0, 0, 0, 0), 3));

	assertEquals(3L, NB.decodeUInt32(b(0, 0, 0, 3), 0));
	assertEquals(3L, NB.decodeUInt32(padb(3, 0, 0, 0, 3), 3));

	assertEquals(0xdeadbeefL, NB.decodeUInt32(b(0xde, 0xad, 0xbe, 0xef), 0));
	assertEquals(0xdeadbeefL, NB.decodeUInt32(padb(3, 0xde, 0xad, 0xbe,
	0xef), 3));

	assertEquals(0x0310adefL, NB.decodeUInt32(b(0x03, 0x10, 0xad, 0xef), 0));
	assertEquals(0x0310adefL, NB.decodeUInt32(padb(3, 0x03, 0x10, 0xad,
	0xef), 3));

	assertEquals(0xffffffffL, NB.decodeUInt32(b(0xff, 0xff, 0xff, 0xff), 0));
	assertEquals(0xffffffffL, NB.decodeUInt32(padb(3, 0xff, 0xff, 0xff,
	0xff), 3));
	}

	@Test
	public void testDecodeUInt64() {
	assertEquals(0L, NB.decodeUInt64(b(0, 0, 0, 0, 0, 0, 0, 0), 0));
	assertEquals(0L, NB.decodeUInt64(padb(3, 0, 0, 0, 0, 0, 0, 0, 0), 3));

	assertEquals(3L, NB.decodeUInt64(b(0, 0, 0, 0, 0, 0, 0, 3), 0));
	assertEquals(3L, NB.decodeUInt64(padb(3, 0, 0, 0, 0, 0, 0, 0, 3), 3));

	assertEquals(0xdeadbeefL, NB.decodeUInt64(b(0, 0, 0, 0, 0xde, 0xad,
	0xbe, 0xef), 0));
	assertEquals(0xdeadbeefL, NB.decodeUInt64(padb(3, 0, 0, 0, 0, 0xde,
	0xad, 0xbe, 0xef), 3));

	assertEquals(0x0310adefL, NB.decodeUInt64(b(0, 0, 0, 0, 0x03, 0x10,
	0xad, 0xef), 0));
	assertEquals(0x0310adefL, NB.decodeUInt64(padb(3, 0, 0, 0, 0, 0x03,
	0x10, 0xad, 0xef), 3));

	assertEquals(0xc0ffee78deadbeefL, NB.decodeUInt64(b(0xc0, 0xff, 0xee,
	0x78, 0xde, 0xad, 0xbe, 0xef), 0));
	assertEquals(0xc0ffee78deadbeefL, NB.decodeUInt64(padb(3, 0xc0, 0xff,
	0xee, 0x78, 0xde, 0xad, 0xbe, 0xef), 3));

	assertEquals(0x00000000ffffffffL, NB.decodeUInt64(b(0, 0, 0, 0, 0xff,
	0xff, 0xff, 0xff), 0));
	assertEquals(0x00000000ffffffffL, NB.decodeUInt64(padb(3, 0, 0, 0, 0,
	0xff, 0xff, 0xff, 0xff), 3));
	assertEquals(0xffffffffffffffffL, NB.decodeUInt64(b(0xff, 0xff, 0xff,
	0xff, 0xff, 0xff, 0xff, 0xff), 0));
	assertEquals(0xffffffffffffffffL, NB.decodeUInt64(padb(3, 0xff, 0xff,
	0xff, 0xff, 0xff, 0xff, 0xff, 0xff), 3));
	}

	@Test
	public void testEncodeInt16() {
	final byte[] out = new byte[16];

	prepareOutput(out);
	NB.encodeInt16(out, 0, 0);
	assertOutput(b(0, 0), out, 0);

	prepareOutput(out);
	NB.encodeInt16(out, 3, 0);
	assertOutput(b(0, 0), out, 3);

	prepareOutput(out);
	NB.encodeInt16(out, 0, 3);
	assertOutput(b(0, 3), out, 0);

	prepareOutput(out);
	NB.encodeInt16(out, 3, 3);
	assertOutput(b(0, 3), out, 3);

	prepareOutput(out);
	NB.encodeInt16(out, 0, 0xdeac);
	assertOutput(b(0xde, 0xac), out, 0);

	prepareOutput(out);
	NB.encodeInt16(out, 3, 0xdeac);
	assertOutput(b(0xde, 0xac), out, 3);

	prepareOutput(out);
	NB.encodeInt16(out, 3, -1);
	assertOutput(b(0xff, 0xff), out, 3);
	}

	@Test
	public void testEncodeInt24() {
	byte[] out = new byte[16];

	prepareOutput(out);
	NB.encodeInt24(out, 0, 0);
	assertOutput(b(0, 0, 0), out, 0);

	prepareOutput(out);
	NB.encodeInt24(out, 3, 0);
	assertOutput(b(0, 0, 0), out, 3);

	prepareOutput(out);
	NB.encodeInt24(out, 0, 3);
	assertOutput(b(0, 0, 3), out, 0);

	prepareOutput(out);
	NB.encodeInt24(out, 3, 3);
	assertOutput(b(0, 0, 3), out, 3);

	prepareOutput(out);
	NB.encodeInt24(out, 0, 0xc0deac);
	assertOutput(b(0xc0, 0xde, 0xac), out, 0);

	prepareOutput(out);
	NB.encodeInt24(out, 3, 0xbadeac);
	assertOutput(b(0xba, 0xde, 0xac), out, 3);

	prepareOutput(out);
	NB.encodeInt24(out, 3, -1);
	assertOutput(b(0xff, 0xff, 0xff), out, 3);
	}

	@Test
	public void testEncodeInt32() {
	final byte[] out = new byte[16];

	prepareOutput(out);
	NB.encodeInt32(out, 0, 0);
	assertOutput(b(0, 0, 0, 0), out, 0);

	prepareOutput(out);
	NB.encodeInt32(out, 3, 0);
	assertOutput(b(0, 0, 0, 0), out, 3);

	prepareOutput(out);
	NB.encodeInt32(out, 0, 3);
	assertOutput(b(0, 0, 0, 3), out, 0);

	prepareOutput(out);
	NB.encodeInt32(out, 3, 3);
	assertOutput(b(0, 0, 0, 3), out, 3);

	prepareOutput(out);
	NB.encodeInt32(out, 0, 0xdeac);
	assertOutput(b(0, 0, 0xde, 0xac), out, 0);

	prepareOutput(out);
	NB.encodeInt32(out, 3, 0xdeac);
	assertOutput(b(0, 0, 0xde, 0xac), out, 3);

	prepareOutput(out);
	NB.encodeInt32(out, 0, 0xdeac9853);
	assertOutput(b(0xde, 0xac, 0x98, 0x53), out, 0);

	prepareOutput(out);
	NB.encodeInt32(out, 3, 0xdeac9853);
	assertOutput(b(0xde, 0xac, 0x98, 0x53), out, 3);

	prepareOutput(out);
	NB.encodeInt32(out, 3, -1);
	assertOutput(b(0xff, 0xff, 0xff, 0xff), out, 3);
	}

	@Test
	public void testEncodeInt64() {
	final byte[] out = new byte[16];

	prepareOutput(out);
	NB.encodeInt64(out, 0, 0L);
	assertOutput(b(0, 0, 0, 0, 0, 0, 0, 0), out, 0);

	prepareOutput(out);
	NB.encodeInt64(out, 3, 0L);
	assertOutput(b(0, 0, 0, 0, 0, 0, 0, 0), out, 3);

	prepareOutput(out);
	NB.encodeInt64(out, 0, 3L);
	assertOutput(b(0, 0, 0, 0, 0, 0, 0, 3), out, 0);

	prepareOutput(out);
	NB.encodeInt64(out, 3, 3L);
	assertOutput(b(0, 0, 0, 0, 0, 0, 0, 3), out, 3);

	prepareOutput(out);
	NB.encodeInt64(out, 0, 0xdeacL);
	assertOutput(b(0, 0, 0, 0, 0, 0, 0xde, 0xac), out, 0);

	prepareOutput(out);
	NB.encodeInt64(out, 3, 0xdeacL);
	assertOutput(b(0, 0, 0, 0, 0, 0, 0xde, 0xac), out, 3);

	prepareOutput(out);
	NB.encodeInt64(out, 0, 0xdeac9853L);
	assertOutput(b(0, 0, 0, 0, 0xde, 0xac, 0x98, 0x53), out, 0);

	prepareOutput(out);
	NB.encodeInt64(out, 3, 0xdeac9853L);
	assertOutput(b(0, 0, 0, 0, 0xde, 0xac, 0x98, 0x53), out, 3);

	prepareOutput(out);
	NB.encodeInt64(out, 0, 0xac431242deac9853L);
	assertOutput(b(0xac, 0x43, 0x12, 0x42, 0xde, 0xac, 0x98, 0x53), out, 0);

	prepareOutput(out);
	NB.encodeInt64(out, 3, 0xac431242deac9853L);
	assertOutput(b(0xac, 0x43, 0x12, 0x42, 0xde, 0xac, 0x98, 0x53), out, 3);

	prepareOutput(out);
	NB.encodeInt64(out, 3, -1L);
	assertOutput(b(0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff), out, 3);
	}

	private static void prepareOutput(byte[] buf) {
	for (int i = 0; i < buf.length; i++)
	buf[i] = (byte) (0x77 + i);
	}

	private static void assertOutput(final byte[] expect, final byte[] buf,
	final int offset) {
	for (int i = 0; i < offset; i++)
	assertEquals((byte) (0x77 + i), buf[i]);
	for (int i = 0; i < expect.length; i++)
	assertEquals(expect[i], buf[offset + i]);
	for (int i = offset + expect.length; i < buf.length; i++)
	assertEquals((byte) (0x77 + i), buf[i]);
	}

	private static byte[] b(int a, int b) {
	return new byte[] { (byte) a, (byte) b };
	}

	private static byte[] padb(int len, int a, int b) {
	final byte[] r = new byte[len + 2];
	for (int i = 0; i < len; i++)
	r[i] = (byte) 0xaf;
	r[len] = (byte) a;
	r[len + 1] = (byte) b;
	return r;
	}

	private static byte[] b(int a, int b, int c) {
	return new byte[] { (byte) a, (byte) b, (byte) c };
	}

	private static byte[] b(int a, int b, int c, int d) {
	return new byte[] { (byte) a, (byte) b, (byte) c, (byte) d };
	}

	private static byte[] padb(int len, int a, int b, int c) {
	final byte[] r = new byte[len + 4];
	for (int i = 0; i < len; i++)
	r[i] = (byte) 0xaf;
	r[len] = (byte) a;
	r[len + 1] = (byte) b;
	r[len + 2] = (byte) c;
	return r;
	}

	private static byte[] padb(final int len, final int a, final int b,
	final int c, final int d) {
	final byte[] r = new byte[len + 4];
	for (int i = 0; i < len; i++)
	r[i] = (byte) 0xaf;
	r[len] = (byte) a;
	r[len + 1] = (byte) b;
	r[len + 2] = (byte) c;
	r[len + 3] = (byte) d;
	return r;
	}

	private static byte[] b(final int a, final int b, final int c, final int d,
	final int e, final int f, final int g, final int h) {
	return new byte[] { (byte) a, (byte) b, (byte) c, (byte) d, (byte) e,
	(byte) f, (byte) g, (byte) h };
	}

	private static byte[] padb(final int len, final int a, final int b,
	final int c, final int d, final int e, final int f, final int g,
	final int h) {
	final byte[] r = new byte[len + 8];
	for (int i = 0; i < len; i++)
	r[i] = (byte) 0xaf;
	r[len] = (byte) a;
	r[len + 1] = (byte) b;
	r[len + 2] = (byte) c;
	r[len + 3] = (byte) d;
	r[len + 4] = (byte) e;
	r[len + 5] = (byte) f;
	r[len + 6] = (byte) g;
	r[len + 7] = (byte) h;
	return r;
	}
	}