ByteUtilsTest.java example

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/*******************************************************************************
 * Copyright (c) 2012 Freescale Semiconductor and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Freescale Semiconductor - initial API and implementation
 *******************************************************************************/

package org.eclipse.cdt.utils;

import static org.eclipse.cdt.internal.core.ByteUtils.makeInt;
import static org.eclipse.cdt.internal.core.ByteUtils.makeLong;
import static org.eclipse.cdt.internal.core.ByteUtils.makeShort;
import junit.framework.Assert;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

public class ByteUtilsTest extends TestCase {

	public static Test suite() {
		return new TestSuite(ByteUtilsTest.class);
	}

	// Allows us to avoid ugly misalignment in the source
	private static byte Ox80 = (byte)0x80;
	private static byte Oxff = (byte)0xff;
	
	public void testMakeShort() throws Exception {
		Assert.assertEquals((short)0x0000, makeShort(new byte[]{0x00,0x00}, 0, false));
		Assert.assertEquals((short)0x7f00, makeShort(new byte[]{0x7f,0x00}, 0, false));
		Assert.assertEquals((short)0x007f, makeShort(new byte[]{0x00,0x7f}, 0, false));
		Assert.assertEquals((short)0x8000, makeShort(new byte[]{Ox80,0x00}, 0, false));
		Assert.assertEquals((short)0x0080, makeShort(new byte[]{0x00,Ox80}, 0, false));
		Assert.assertEquals((short)0xff00, makeShort(new byte[]{Oxff,0x00}, 0, false));
		Assert.assertEquals((short)0x00ff, makeShort(new byte[]{0x00,Oxff}, 0, false));
		Assert.assertEquals((short)0xffff, makeShort(new byte[]{Oxff,Oxff}, 0, false));
		
		Assert.assertEquals((short)0x0000, makeShort(new byte[]{0x00,0x00}, 0, true));
		Assert.assertEquals((short)0x007f, makeShort(new byte[]{0x7f,0x00}, 0, true));
		Assert.assertEquals((short)0x7f00, makeShort(new byte[]{0x00,0x7f}, 0, true));
		Assert.assertEquals((short)0x0080, makeShort(new byte[]{Ox80,0x00}, 0, true));
		Assert.assertEquals((short)0x8000, makeShort(new byte[]{0x00,Ox80}, 0, true));
		Assert.assertEquals((short)0x00ff, makeShort(new byte[]{Oxff,0x00}, 0, true));
		Assert.assertEquals((short)0xff00, makeShort(new byte[]{0x00,Oxff}, 0, true));
		Assert.assertEquals((short)0xffff, makeShort(new byte[]{Oxff,Oxff}, 0, true));
		
		Assert.assertEquals(0x0102, makeShort(new byte[]{0,0,0,0x01,0x02}, 3, false));
		Assert.assertEquals(0x0201, makeShort(new byte[]{0,0,0,0x01,0x02}, 3, true));
	}
	
	public void testMakeInt() throws Exception {
		Assert.assertEquals(0x00000000, makeInt(new byte[]{0x00,0x00,0x00,0x00}, 0, false));
		Assert.assertEquals(0x7f000000, makeInt(new byte[]{0x7f,0x00,0x00,0x00}, 0, false));
		Assert.assertEquals(0x007f0000, makeInt(new byte[]{0x00,0x7f,0x00,0x00}, 0, false));
		Assert.assertEquals(0x00007f00, makeInt(new byte[]{0x00,0x00,0x7f,0x00}, 0, false));
		Assert.assertEquals(0x0000007f, makeInt(new byte[]{0x00,0x00,0x00,0x7f}, 0, false));
		Assert.assertEquals(0x80000000, makeInt(new byte[]{Ox80,0x00,0x00,0x00}, 0, false));
		Assert.assertEquals(0x00800000, makeInt(new byte[]{0x00,Ox80,0x00,0x00}, 0, false));
		Assert.assertEquals(0x00008000, makeInt(new byte[]{0x00,0x00,Ox80,0x00}, 0, false));
		Assert.assertEquals(0x00000080, makeInt(new byte[]{0x00,0x00,0x00,Ox80}, 0, false));
		Assert.assertEquals(0xff000000, makeInt(new byte[]{Oxff,0x00,0x00,0x00}, 0, false));
		Assert.assertEquals(0x00ff0000, makeInt(new byte[]{0x00,Oxff,0x00,0x00}, 0, false));
		Assert.assertEquals(0x0000ff00, makeInt(new byte[]{0x00,0x00,Oxff,0x00}, 0, false));
		Assert.assertEquals(0x000000ff, makeInt(new byte[]{0x00,0x00,0x00,Oxff}, 0, false));
		Assert.assertEquals(0xffffffff, makeInt(new byte[]{Oxff,Oxff,Oxff,Oxff}, 0, false));

		Assert.assertEquals(0x00000000, makeInt(new byte[]{0x00,0x00,0x00,0x00}, 0, true));
		Assert.assertEquals(0x0000007f, makeInt(new byte[]{0x7f,0x00,0x00,0x00}, 0, true));
		Assert.assertEquals(0x00007f00, makeInt(new byte[]{0x00,0x7f,0x00,0x00}, 0, true));
		Assert.assertEquals(0x007f0000, makeInt(new byte[]{0x00,0x00,0x7f,0x00}, 0, true));
		Assert.assertEquals(0x7f000000, makeInt(new byte[]{0x00,0x00,0x00,0x7f}, 0, true));
		Assert.assertEquals(0x00000080, makeInt(new byte[]{Ox80,0x00,0x00,0x00}, 0, true));
		Assert.assertEquals(0x00008000, makeInt(new byte[]{0x00,Ox80,0x00,0x00}, 0, true));
		Assert.assertEquals(0x00800000, makeInt(new byte[]{0x00,0x00,Ox80,0x00}, 0, true));
		Assert.assertEquals(0x80000000, makeInt(new byte[]{0x00,0x00,0x00,Ox80}, 0, true));
		Assert.assertEquals(0x000000ff, makeInt(new byte[]{Oxff,0x00,0x00,0x00}, 0, true));
		Assert.assertEquals(0x0000ff00, makeInt(new byte[]{0x00,Oxff,0x00,0x00}, 0, true));
		Assert.assertEquals(0x00ff0000, makeInt(new byte[]{0x00,0x00,Oxff,0x00}, 0, true));
		Assert.assertEquals(0xff000000, makeInt(new byte[]{0x00,0x00,0x00,Oxff}, 0, true));
		Assert.assertEquals(0xffffffff, makeInt(new byte[]{Oxff,Oxff,Oxff,Oxff}, 0, true));

		Assert.assertEquals(0x01020304, makeInt(new byte[]{0,0,0,0x01,0x02,0x03,0x04}, 3, false));
		Assert.assertEquals(0x04030201, makeInt(new byte[]{0,0,0,0x01,0x02,0x03,0x04}, 3, true));
	}

	public void testMakeLong() throws Exception {
		Assert.assertEquals(0x0000000000000000L, makeLong(new byte[]{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}, 0, false));
		Assert.assertEquals(0x7f00000000000000L, makeLong(new byte[]{0x7f,0x00,0x00,0x00,0x00,0x00,0x00,0x00}, 0, false));
		Assert.assertEquals(0x007f000000000000L, makeLong(new byte[]{0x00,0x7f,0x00,0x00,0x00,0x00,0x00,0x00}, 0, false));
		Assert.assertEquals(0x00007f0000000000L, makeLong(new byte[]{0x00,0x00,0x7f,0x00,0x00,0x00,0x00,0x00}, 0, false));
		Assert.assertEquals(0x0000007f00000000L, makeLong(new byte[]{0x00,0x00,0x00,0x7f,0x00,0x00,0x00,0x00}, 0, false));
		Assert.assertEquals(0x000000007f000000L, makeLong(new byte[]{0x00,0x00,0x00,0x00,0x7f,0x00,0x00,0x00}, 0, false));
		Assert.assertEquals(0x00000000007f0000L, makeLong(new byte[]{0x00,0x00,0x00,0x00,0x00,0x7f,0x00,0x00}, 0, false));
		Assert.assertEquals(0x0000000000007f00L, makeLong(new byte[]{0x00,0x00,0x00,0x00,0x00,0x00,0x7f,0x00}, 0, false));
		Assert.assertEquals(0x000000000000007fL, makeLong(new byte[]{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7f}, 0, false));
		Assert.assertEquals(0x8000000000000000L, makeLong(new byte[]{Ox80,0x00,0x00,0x00,0x00,0x00,0x00,0x00}, 0, false));
		Assert.assertEquals(0x0080000000000000L, makeLong(new byte[]{0x00,Ox80,0x00,0x00,0x00,0x00,0x00,0x00}, 0, false));
		Assert.assertEquals(0x0000800000000000L, makeLong(new byte[]{0x00,0x00,Ox80,0x00,0x00,0x00,0x00,0x00}, 0, false));
		Assert.assertEquals(0x0000008000000000L, makeLong(new byte[]{0x00,0x00,0x00,Ox80,0x00,0x00,0x00,0x00}, 0, false));
		Assert.assertEquals(0x0000000080000000L, makeLong(new byte[]{0x00,0x00,0x00,0x00,Ox80,0x00,0x00,0x00}, 0, false));
		Assert.assertEquals(0x0000000000800000L, makeLong(new byte[]{0x00,0x00,0x00,0x00,0x00,Ox80,0x00,0x00}, 0, false));
		Assert.assertEquals(0x0000000000008000L, makeLong(new byte[]{0x00,0x00,0x00,0x00,0x00,0x00,Ox80,0x00}, 0, false));
		Assert.assertEquals(0x0000000000000080L, makeLong(new byte[]{0x00,0x00,0x00,0x00,0x00,0x00,0x00,Ox80}, 0, false));
		Assert.assertEquals(0xff00000000000000L, makeLong(new byte[]{Oxff,0x00,0x00,0x00,0x00,0x00,0x00,0x00}, 0, false));
		Assert.assertEquals(0x00ff000000000000L, makeLong(new byte[]{0x00,Oxff,0x00,0x00,0x00,0x00,0x00,0x00}, 0, false));
		Assert.assertEquals(0x0000ff0000000000L, makeLong(new byte[]{0x00,0x00,Oxff,0x00,0x00,0x00,0x00,0x00}, 0, false));
		Assert.assertEquals(0x000000ff00000000L, makeLong(new byte[]{0x00,0x00,0x00,Oxff,0x00,0x00,0x00,0x00}, 0, false));
		Assert.assertEquals(0x00000000ff000000L, makeLong(new byte[]{0x00,0x00,0x00,0x00,Oxff,0x00,0x00,0x00}, 0, false));
		Assert.assertEquals(0x0000000000ff0000L, makeLong(new byte[]{0x00,0x00,0x00,0x00,0x00,Oxff,0x00,0x00}, 0, false));
		Assert.assertEquals(0x000000000000ff00L, makeLong(new byte[]{0x00,0x00,0x00,0x00,0x00,0x00,Oxff,0x00}, 0, false));
		Assert.assertEquals(0x00000000000000ffL, makeLong(new byte[]{0x00,0x00,0x00,0x00,0x00,0x00,0x00,Oxff}, 0, false));
		Assert.assertEquals(0xffffffffffffffffL, makeLong(new byte[]{Oxff,Oxff,Oxff,Oxff,Oxff,Oxff,Oxff,Oxff}, 0, false));

		Assert.assertEquals(0x0000000000000000L, makeLong(new byte[]{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}, 0, true));
		Assert.assertEquals(0x000000000000007fL, makeLong(new byte[]{0x7f,0x00,0x00,0x00,0x00,0x00,0x00,0x00}, 0, true));
		Assert.assertEquals(0x0000000000007f00L, makeLong(new byte[]{0x00,0x7f,0x00,0x00,0x00,0x00,0x00,0x00}, 0, true));
		Assert.assertEquals(0x00000000007f0000L, makeLong(new byte[]{0x00,0x00,0x7f,0x00,0x00,0x00,0x00,0x00}, 0, true));
		Assert.assertEquals(0x000000007f000000L, makeLong(new byte[]{0x00,0x00,0x00,0x7f,0x00,0x00,0x00,0x00}, 0, true));
		Assert.assertEquals(0x0000007f00000000L, makeLong(new byte[]{0x00,0x00,0x00,0x00,0x7f,0x00,0x00,0x00}, 0, true));
		Assert.assertEquals(0x00007f0000000000L, makeLong(new byte[]{0x00,0x00,0x00,0x00,0x00,0x7f,0x00,0x00}, 0, true));
		Assert.assertEquals(0x007f000000000000L, makeLong(new byte[]{0x00,0x00,0x00,0x00,0x00,0x00,0x7f,0x00}, 0, true));
		Assert.assertEquals(0x7f00000000000000L, makeLong(new byte[]{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7f}, 0, true));
		Assert.assertEquals(0x0000000000000080L, makeLong(new byte[]{Ox80,0x00,0x00,0x00,0x00,0x00,0x00,0x00}, 0, true));
		Assert.assertEquals(0x0000000000008000L, makeLong(new byte[]{0x00,Ox80,0x00,0x00,0x00,0x00,0x00,0x00}, 0, true));
		Assert.assertEquals(0x0000000000800000L, makeLong(new byte[]{0x00,0x00,Ox80,0x00,0x00,0x00,0x00,0x00}, 0, true));
		Assert.assertEquals(0x0000000080000000L, makeLong(new byte[]{0x00,0x00,0x00,Ox80,0x00,0x00,0x00,0x00}, 0, true));
		Assert.assertEquals(0x0000008000000000L, makeLong(new byte[]{0x00,0x00,0x00,0x00,Ox80,0x00,0x00,0x00}, 0, true));
		Assert.assertEquals(0x0000800000000000L, makeLong(new byte[]{0x00,0x00,0x00,0x00,0x00,Ox80,0x00,0x00}, 0, true));
		Assert.assertEquals(0x0080000000000000L, makeLong(new byte[]{0x00,0x00,0x00,0x00,0x00,0x00,Ox80,0x00}, 0, true));
		Assert.assertEquals(0x8000000000000000L, makeLong(new byte[]{0x00,0x00,0x00,0x00,0x00,0x00,0x00,Ox80}, 0, true));
		Assert.assertEquals(0x00000000000000ffL, makeLong(new byte[]{Oxff,0x00,0x00,0x00,0x00,0x00,0x00,0x00}, 0, true));
		Assert.assertEquals(0x000000000000ff00L, makeLong(new byte[]{0x00,Oxff,0x00,0x00,0x00,0x00,0x00,0x00}, 0, true));
		Assert.assertEquals(0x0000000000ff0000L, makeLong(new byte[]{0x00,0x00,Oxff,0x00,0x00,0x00,0x00,0x00}, 0, true));
		Assert.assertEquals(0x00000000ff000000L, makeLong(new byte[]{0x00,0x00,0x00,Oxff,0x00,0x00,0x00,0x00}, 0, true));
		Assert.assertEquals(0x000000ff00000000L, makeLong(new byte[]{0x00,0x00,0x00,0x00,Oxff,0x00,0x00,0x00}, 0, true));
		Assert.assertEquals(0x0000ff0000000000L, makeLong(new byte[]{0x00,0x00,0x00,0x00,0x00,Oxff,0x00,0x00}, 0, true));
		Assert.assertEquals(0x00ff000000000000L, makeLong(new byte[]{0x00,0x00,0x00,0x00,0x00,0x00,Oxff,0x00}, 0, true));
		Assert.assertEquals(0xff00000000000000L, makeLong(new byte[]{0x00,0x00,0x00,0x00,0x00,0x00,0x00,Oxff}, 0, true));
		Assert.assertEquals(0xffffffffffffffffL, makeLong(new byte[]{Oxff,Oxff,Oxff,Oxff,Oxff,Oxff,Oxff,Oxff}, 0, true));
		
		Assert.assertEquals(0x0102030405060708L, makeLong(new byte[]{0,0,0,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08}, 3, false));
		Assert.assertEquals(0x0807060504030201L, makeLong(new byte[]{0,0,0,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08}, 3, true));
	}
}