/*
* 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.harmony.archive.tests.java.util.zip;
import java.util.zip.CRC32;
public class CRC32Test extends junit.framework.TestCase {
/**
* @tests java.util.zip.CRC32#CRC32()
*/
public void test_Constructor() {
// test methods of java.util.zip.CRC32()
CRC32 crc = new CRC32();
assertEquals("Constructor of CRC32 failed", 0, crc.getValue());
}
/**
* @tests java.util.zip.CRC32#getValue()
*/
public void test_getValue() {
// test methods of java.util.zip.crc32.getValue()
CRC32 crc = new CRC32();
assertEquals("getValue() should return a zero as a result of constructing a CRC32 instance",
0, crc.getValue());
crc.reset();
crc.update(Integer.MAX_VALUE);
// System.out.print("value of crc " + crc.getValue());
// Ran JDK and discovered that the value of the CRC should be
// 4278190080
assertEquals("update(max) failed to update the checksum to the correct value ",
4278190080L, crc.getValue());
crc.reset();
byte byteEmpty[] = new byte[10000];
crc.update(byteEmpty);
// System.out.print("value of crc"+crc.getValue());
// Ran JDK and discovered that the value of the CRC should be
// 1295764014
assertEquals("update(byte[]) failed to update the checksum to the correct value ",
1295764014L, crc.getValue());
crc.reset();
crc.update(1);
// System.out.print("value of crc"+crc.getValue());
// Ran JDK and discovered that the value of the CRC should be
// 2768625435
// assertEquals("update(int) failed to update the checksum to the correct
// value ",2768625435L, crc.getValue());
crc.reset();
assertEquals("reset failed to reset the checksum value to zero", 0, crc
.getValue());
}
/**
* @tests java.util.zip.CRC32#reset()
*/
public void test_reset() {
// test methods of java.util.zip.crc32.reset()
CRC32 crc = new CRC32();
crc.update(1);
// System.out.print("value of crc"+crc.getValue());
// Ran JDK and discovered that the value of the CRC should be
// 2768625435
assertEquals("update(int) failed to update the checksum to the correct value ",
2768625435L, crc.getValue());
crc.reset();
assertEquals("reset failed to reset the checksum value to zero", 0, crc
.getValue());
}
/**
* @tests java.util.zip.CRC32#update(int)
*/
public void test_updateI() {
// test methods of java.util.zip.crc32.update(int)
CRC32 crc = new CRC32();
crc.update(1);
// System.out.print("value of crc"+crc.getValue());
// Ran JDK and discovered that the value of the CRC should be
// 2768625435
assertEquals("update(1) failed to update the checksum to the correct value ",
2768625435L, crc.getValue());
crc.reset();
crc.update(Integer.MAX_VALUE);
// System.out.print("value of crc " + crc.getValue());
// Ran JDK and discovered that the value of the CRC should be
// 4278190080
assertEquals("update(max) failed to update the checksum to the correct value ",
4278190080L, crc.getValue());
crc.reset();
crc.update(Integer.MIN_VALUE);
// System.out.print("value of crc " + crc.getValue());
// Ran JDK and discovered that the value of the CRC should be
// 3523407757
assertEquals("update(min) failed to update the checksum to the correct value ",
3523407757L, crc.getValue());
}
/**
* @tests java.util.zip.CRC32#update(byte[])
*/
public void test_update$B() {
// test methods of java.util.zip.crc32.update(byte[])
byte byteArray[] = { 1, 2 };
CRC32 crc = new CRC32();
crc.update(byteArray);
// System.out.print("value of crc"+crc.getValue());
// Ran JDK and discovered that the value of the CRC should be
// 3066839698
assertEquals("update(byte[]) failed to update the checksum to the correct value ",
3066839698L, crc.getValue());
crc.reset();
byte byteEmpty[] = new byte[10000];
crc.update(byteEmpty);
// System.out.print("value of crc"+crc.getValue());
// Ran JDK and discovered that the value of the CRC should be
// 1295764014
assertEquals("update(byte[]) failed to update the checksum to the correct value ",
1295764014L, crc.getValue());
}
/**
* @tests java.util.zip.CRC32#update(byte[], int, int)
*/
public void test_update$BII() {
// test methods of java.util.zip.update(byte[],int,int)
byte[] byteArray = { 1, 2, 3 };
CRC32 crc = new CRC32();
int off = 2;// accessing the 2nd element of byteArray
int len = 1;
int lenError = 3;
int offError = 4;
crc.update(byteArray, off, len);
// System.out.print("value of crc"+crc.getValue());
// Ran JDK and discovered that the value of the CRC should be
// 1259060791
assertEquals("update(byte[],int,int) failed to update the checksum to the correct value ",
1259060791L, crc.getValue());
int r = 0;
try {
crc.update(byteArray, off, lenError);
} catch (ArrayIndexOutOfBoundsException e) {
r = 1;
}
assertEquals("update(byte[],int,int) failed b/c lenError>byte[].length-off",
1, r);
try {
crc.update(byteArray, offError, len);
} catch (ArrayIndexOutOfBoundsException e) {
r = 2;
}
assertEquals("update(byte[],int,int) failed b/c offError>byte[].length",
2, r);
}
@Override
protected void setUp() {
}
@Override
protected void tearDown() {
}
}