91 lines
3.2 KiB
Java
91 lines
3.2 KiB
Java
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/*
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* Copyright (c) 2007, 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* utility class
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*/
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public class TestUtilities {
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public static boolean equalsBlock(byte[] b1, byte[] b2, int len) {
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for (int i = 0; i < len; i++) {
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if (b1[i] != b2[i]) {
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System.err.println("b1[" + i + "] : " + b1[i]
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+ " b2[" + i + "] : " + b2[i]);
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return false;
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}
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}
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return true;
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}
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public static boolean equals(byte[] b1, byte[] b2) {
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if (b2.length != b1.length) {
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System.err.println("b1.length = " + b1.length
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+ " b2.length = " + b2.length );
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return false;
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}
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return equalsBlock(b1, b2, b1.length);
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}
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/**
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* Verify b1's partial part is same as b2. compares b1 and b2 by chopping up
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* b1 into blocks of b1BKSize and b2 into blocks of b2BKSize, and then
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* compare the first b2BKSize bytes of each block, return true if they equal
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* , otherwise return false.
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* @param b1 byte array to be compared.
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* @param b2 saved byte array.
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* @param b1BKSize b1's block size.
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* @param b2BKSize b2's block size.
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* @return true is same. false otherwise.
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*/
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public static boolean equalsBlockPartial(byte[] b1, byte[] b2, int b1BKSize,
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int b2BKSize) {
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int numOfBlock = b1.length / b1BKSize;
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for (int b = 0; b < numOfBlock; b++) {
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for (int i = 0; i < b2BKSize; i++) {
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int j1 = b * b1BKSize + i;
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int j2 = b * b2BKSize + i;
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if (b1[j1] != b2[j2]) {
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System.err.println("Compare failed at b1[" + j1 + "]:" +
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b1[j1] + " b2[" + j2 + "]:" + b2[j2]);
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return false;
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}
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}
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}
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return true;
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}
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/**
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* Generate a byte block by given length. The content of byte block
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* is determined by the index.
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* @param length length of byte array
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* @return a byte array
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*/
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public static byte[] generateBytes(int length) {
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byte[] bytes = new byte[length];
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for (int i = 0; i < length; i++) {
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bytes[i] = (byte) (i & 0xff);
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}
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return bytes;
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}
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}
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