| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| package org.apache.commons.compress.archivers.zip; |
| |
| import static org.junit.Assert.*; |
| |
| import java.math.BigInteger; |
| |
| import org.junit.Test; |
| |
| /** |
| * JUnit testcases for org.apache.commons.compress.archivers.zip.ZipEightByteInteger. |
| * |
| */ |
| public class ZipEightByteIntegerTest { |
| |
| /** |
| * Test conversion to bytes. |
| */ |
| @Test |
| public void testLongToBytes() { |
| final ZipEightByteInteger zl = new ZipEightByteInteger(0xAB12345678L); |
| final byte[] result = zl.getBytes(); |
| assertEquals("length getBytes", 8, result.length); |
| assertEquals("first byte getBytes", 0x78, result[0]); |
| assertEquals("second byte getBytes", 0x56, result[1]); |
| assertEquals("third byte getBytes", 0x34, result[2]); |
| assertEquals("fourth byte getBytes", 0x12, result[3]); |
| assertEquals("fifth byte getBytes", (byte) 0xAB, result[4]); |
| assertEquals("sixth byte getBytes", 0, result[5]); |
| assertEquals("seventh byte getBytes", 0, result[6]); |
| assertEquals("eighth byte getBytes", 0, result[7]); |
| } |
| |
| /** |
| * Test conversion from bytes. |
| */ |
| @Test |
| public void testLongFromBytes() { |
| final byte[] val = new byte[] {0x78, 0x56, 0x34, 0x12, (byte) 0xAB, 0x00, 0x00, 0x00}; |
| final ZipEightByteInteger zl = new ZipEightByteInteger(val); |
| assertEquals("longValue from bytes", 0xAB12345678L, zl.getLongValue()); |
| } |
| |
| /** |
| * Test conversion to bytes. |
| */ |
| @Test |
| public void testBIToBytes() { |
| final ZipEightByteInteger zl = |
| new ZipEightByteInteger(BigInteger.valueOf(Long.MAX_VALUE) |
| .shiftLeft(1)); |
| final byte[] result = zl.getBytes(); |
| assertEquals("length getBytes", 8, result.length); |
| assertEquals("first byte getBytes", (byte) 0xFE, result[0]); |
| assertEquals("second byte getBytes", (byte) 0xFF, result[1]); |
| assertEquals("third byte getBytes", (byte) 0xFF, result[2]); |
| assertEquals("fourth byte getBytes", (byte) 0xFF, result[3]); |
| assertEquals("fifth byte getBytes", (byte) 0xFF, result[4]); |
| assertEquals("sixth byte getBytes", (byte) 0xFF, result[5]); |
| assertEquals("seventh byte getBytes", (byte) 0xFF, result[6]); |
| assertEquals("eighth byte getBytes", (byte) 0xFF, result[7]); |
| } |
| |
| /** |
| * Test conversion from bytes. |
| */ |
| @Test |
| public void testBIFromBytes() { |
| final byte[] val = new byte[] {(byte) 0xFE, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF}; |
| final ZipEightByteInteger zl = new ZipEightByteInteger(val); |
| assertEquals("value from bytes", |
| BigInteger.valueOf(Long.MAX_VALUE).shiftLeft(1), |
| zl.getValue()); |
| } |
| |
| /** |
| * Test the contract of the equals method. |
| */ |
| @Test |
| public void testEquals() { |
| final ZipEightByteInteger zl = new ZipEightByteInteger(0x12345678); |
| final ZipEightByteInteger zl2 = new ZipEightByteInteger(0x12345678); |
| final ZipEightByteInteger zl3 = new ZipEightByteInteger(0x87654321); |
| |
| assertTrue("reflexive", zl.equals(zl)); |
| |
| assertTrue("works", zl.equals(zl2)); |
| assertTrue("works, part two", !zl.equals(zl3)); |
| |
| assertTrue("symmetric", zl2.equals(zl)); |
| |
| assertTrue("null handling", !zl.equals(null)); |
| assertTrue("non ZipEightByteInteger handling", !zl.equals(new Integer(0x1234))); |
| } |
| |
| /** |
| * Test sign handling. |
| */ |
| @Test |
| public void testSign() { |
| final ZipEightByteInteger zl = new ZipEightByteInteger(new byte[] {(byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF}); |
| assertEquals(BigInteger.valueOf(Long.MAX_VALUE).shiftLeft(1).setBit(0), |
| zl.getValue()); |
| } |
| } |