android-platform-libcore/luni/src/test/java/org/apache/harmony/archive/tests/java/util/zip/Adler32Test.java

/*
 * 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.Adler32;

public class Adler32Test extends junit.framework.TestCase {

	/**
	 * @tests java.util.zip.Adler32#Adler32()
	 */
	public void test_Constructor() {
		// test method of java.util.zip.Adler32()
		Adler32 adl = new Adler32();
		assertEquals("Constructor of adl32 failed", 1, adl.getValue());
	}

	/**
	 * @tests java.util.zip.Adler32#getValue()
	 */
	public void test_getValue() {
		// test methods of java.util.zip.getValue()
		Adler32 adl = new Adler32();
		assertEquals("GetValue should return a zero as a result of construction an object of Adler32",
				1, adl.getValue());

		adl.reset();
		adl.update(1);
		// System.out.print("value of adl"+adl.getValue());
		// The value of the adl should be 131074
		assertEquals("update(int) failed to update the checksum to the correct value ",
				131074, adl.getValue());
		adl.reset();
		assertEquals("reset failed to reset the checksum value to zero", 1, adl
				.getValue());

		adl.reset();
		adl.update(Integer.MIN_VALUE);
		// System.out.print("value of adl " + adl.getValue());
		// The value of the adl should be 65537
		assertEquals("update(min) failed to update the checksum to the correct value ",
				65537L, adl.getValue());
	}

	/**
	 * @tests java.util.zip.Adler32#reset()
	 */
	public void test_reset() {
		// test methods of java.util.zip.reset()
		Adler32 adl = new Adler32();
		adl.update(1);
		// System.out.print("value of adl"+adl.getValue());
		// The value of the adl should be 131074
		assertEquals("update(int) failed to update the checksum to the correct value ",
				131074, adl.getValue());
		adl.reset();
		assertEquals("reset failed to reset the checksum value to zero", 1, adl
				.getValue());
	}

	/**
	 * @tests java.util.zip.Adler32#update(int)
	 */
	public void test_updateI() {
		// test methods of java.util.zip.update(int)
		Adler32 adl = new Adler32();
		adl.update(1);
		// The value of the adl should be 131074
		assertEquals("update(int) failed to update the checksum to the correct value ",
				131074, adl.getValue());

		adl.reset();
		adl.update(Integer.MAX_VALUE);
		// System.out.print("value of adl " + adl.getValue());
		// The value of the adl should be 16777472
		assertEquals("update(max) failed to update the checksum to the correct value ",
				16777472L, adl.getValue());

		adl.reset();
		adl.update(Integer.MIN_VALUE);
		// System.out.print("value of adl " + adl.getValue());
		// The value of the adl should be 65537
		assertEquals("update(min) failed to update the checksum to the correct value ",
				65537L, adl.getValue());

	}

	/**
	 * @tests java.util.zip.Adler32#update(byte[])
	 */
	public void test_update$B() {
		// test method of java.util.zip.update(byte[])
		byte byteArray[] = { 1, 2 };
		Adler32 adl = new Adler32();
		adl.update(byteArray);
		// System.out.print("value of adl"+adl.getValue());
		// The value of the adl should be 393220
		assertEquals("update(byte[]) failed to update the checksum to the correct value ",
				393220, adl.getValue());

		adl.reset();
		byte byteEmpty[] = new byte[10000];
		adl.update(byteEmpty);
		// System.out.print("value of adl"+adl.getValue());
		// The value of the adl should be 655360001
		assertEquals("update(byte[]) failed to update the checksum to the correct value ",
				655360001L, adl.getValue());

	}

	/**
	 * @tests java.util.zip.Adler32#update(byte[], int, int)
	 */
	public void test_update$BII() {
		// test methods of java.util.zip.update(byte[],int,int)
		byte[] byteArray = { 1, 2, 3 };
		Adler32 adl = new Adler32();
		int off = 2;// accessing the 2nd element of byteArray
		int len = 1;
		int lenError = 3;
		int offError = 4;
		adl.update(byteArray, off, len);
		// System.out.print("value of adl"+adl.getValue());
		// The value of the adl should be 262148
		assertEquals("update(byte[],int,int) failed to update the checksum to the correct value ",
				262148, adl.getValue());
		int r = 0;

		try {
			adl.update(byteArray, off, lenError);
		} catch (ArrayIndexOutOfBoundsException e) {
			r = 1;
		}
		assertEquals("update(byte[],int,int) failed b/c lenError>byte[].length-off",
				1, r);

		try {
			adl.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() {
	}

}