/*
* 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.
*/
/**
* @author Alexander Y. Kleymenov
* @version $Revision$
*/
package javax.crypto;
import java.io.BufferedOutputStream;
import java.io.ByteArrayOutputStream;
import java.io.OutputStream;
import java.util.Arrays;
import javax.crypto.NullCipher;
import junit.framework.TestCase;
/**
*/
public class CipherOutputStreamTest extends TestCase {
private static class TestOutputStream extends ByteArrayOutputStream {
private boolean closed = false;
public void close() {
closed = true;
}
public boolean wasClosed() {
return closed;
}
}
/**
* CipherOutputStream(OutputStream os) method testing. Tests that
* CipherOutputStream uses NullCipher if Cipher is not specified
* in the constructor.
*/
public void testCipherOutputStream() throws Exception {
byte[] data = new byte[] { -127, -100, -50, -10, -1, 0, 1, 10, 50, 127 };
TestOutputStream tos = new TestOutputStream();
CipherOutputStream cos = new CipherOutputStream(tos);
cos.write(data);
cos.flush();
byte[] result = tos.toByteArray();
if (!Arrays.equals(result, data)) {
fail("NullCipher should be used " + "if Cipher is not specified.");
}
}
/**
* write(int b) method testing. Tests that method writes correct values to
* the underlying output stream.
*/
public void testWrite1() throws Exception {
byte[] data = new byte[] { -127, -100, -50, -10, -1, 0, 1, 10, 50, 127 };
TestOutputStream tos = new TestOutputStream();
CipherOutputStream cos = new CipherOutputStream(tos, new NullCipher());
for (int i = 0; i < data.length; i++) {
cos.write(data[i]);
}
cos.flush();
byte[] result = tos.toByteArray();
if (!Arrays.equals(result, data)) {
fail("CipherOutputStream wrote incorrect data.");
}
}
/**
* write(byte[] b) method testing. Tests that method writes correct values
* to the underlying output stream.
*/
public void testWrite2() throws Exception {
byte[] data = new byte[] { -127, -100, -50, -10, -1, 0, 1, 10, 50, 127 };
TestOutputStream tos = new TestOutputStream();
CipherOutputStream cos = new CipherOutputStream(tos, new NullCipher());
cos.write(data);
cos.flush();
byte[] result = tos.toByteArray();
if (!Arrays.equals(result, data)) {
fail("CipherOutputStream wrote incorrect data.");
}
}
/**
* write(byte[] b, int off, int len) method testing.
*/
public void testWrite3() throws Exception {
byte[] data = new byte[] { -127, -100, -50, -10, -1, 0, 1, 10, 50, 127 };
TestOutputStream tos = new TestOutputStream();
CipherOutputStream cos = new CipherOutputStream(tos, new NullCipher());
for (int i = 0; i < data.length; i++) {
cos.write(data, i, 1);
}
cos.flush();
byte[] result = tos.toByteArray();
if (!Arrays.equals(result, data)) {
fail("CipherOutputStream wrote incorrect data.");
}
}
/**
* @tests write(byte[] b, int off, int len)
*/
public void testWrite4() throws Exception {
//Regression for HARMONY-758
try {
new CipherOutputStream(new BufferedOutputStream((OutputStream) null), new NullCipher()).write(new byte[] {0}, 1, Integer.MAX_VALUE);
} catch (IllegalArgumentException e) {
}
}
/**
* @tests write(byte[] b, int off, int len)
*/
public void testWrite5() throws Exception {
//Regression for HARMONY-758
Cipher cf = Cipher.getInstance("DES/CBC/PKCS5Padding");
NullCipher nc = new NullCipher();
CipherOutputStream stream1 = new CipherOutputStream(new BufferedOutputStream((OutputStream) null), nc);
CipherOutputStream stream2 = new CipherOutputStream(stream1, cf);
CipherOutputStream stream3 = new CipherOutputStream(stream2, nc);
stream3.write(new byte[] {0}, 0, 0);
//no exception expected
}
/**
* flush() method testing. Tests that method flushes the data to the
* underlying output stream.
*/
public void testFlush() throws Exception {
byte[] data = new byte[] { -127, -100, -50, -10, -1, 0, 1, 10, 50, 127 };
TestOutputStream tos = new TestOutputStream();
CipherOutputStream cos = new CipherOutputStream(tos);
cos.write(data);
cos.flush();
byte[] result = tos.toByteArray();
if (!Arrays.equals(result, data)) {
fail("CipherOutputStream did not flush the data.");
}
}
/**
* close() method testing. Tests that the method calls the close() method of
* the underlying input stream.
*/
public void testClose() throws Exception {
byte[] data = new byte[] { -127, -100, -50, -10, -1, 0, 1, 10, 50, 127 };
TestOutputStream tos = new TestOutputStream();
CipherOutputStream cos = new CipherOutputStream(tos);
cos.write(data);
cos.close();
byte[] result = tos.toByteArray();
if (!Arrays.equals(result, data)) {
fail("CipherOutputStream did not flush the data.");
}
assertTrue("The close() method should call the close() method "
+ "of its underlying output stream.", tos.wasClosed());
}
}