/*
* 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 com.tom_roush.fontbox.cff;
import junit.framework.TestCase;
import org.junit.internal.ArrayComparisonFailure;
import java.util.Random;
import static org.junit.Assert.assertArrayEquals;
/**
* This class includes some tests for the Type1FontUtil class.
*
* @author Villu Ruusmann
*/
public class Type1FontUtilTest extends TestCase
{
static final long DEFAULTSEED = 12345;
static final long LOOPS = 1000;
/**
* Tests the hex encoding/decoding.
*/
public void testHexEncoding()
{
long seed = DEFAULTSEED;
tryHexEncoding(seed);
for (int i = 0; i < LOOPS; ++i)
{
tryHexEncoding(System.currentTimeMillis());
}
}
private void tryHexEncoding(long seed) throws ArrayComparisonFailure
{
byte[] bytes = createRandomByteArray(128, seed);
String encodedBytes = Type1FontUtil.hexEncode(bytes);
byte[] decodedBytes = Type1FontUtil.hexDecode(encodedBytes);
assertArrayEquals("Seed: " + seed, bytes, decodedBytes);
}
/**
* Tests the eexec encryption/decryption.
*/
public void testEexecEncryption()
{
long seed = DEFAULTSEED;
tryEexecEncryption(seed);
for (int i = 0; i < LOOPS; ++i)
{
tryEexecEncryption(System.currentTimeMillis());
}
}
private void tryEexecEncryption(long seed) throws ArrayComparisonFailure
{
byte[] bytes = createRandomByteArray(128, seed);
byte[] encryptedBytes = Type1FontUtil.eexecEncrypt(bytes);
byte[] decryptedBytes = Type1FontUtil.eexecDecrypt(encryptedBytes);
assertArrayEquals("Seed: " + seed, bytes, decryptedBytes);
}
/**
* Tests the charstring encryption/decryption.
*/
public void testCharstringEncryption()
{
long seed = DEFAULTSEED;
tryCharstringEncryption(seed);
for (int i = 0; i < LOOPS; ++i)
{
tryCharstringEncryption(System.currentTimeMillis());
}
}
private void tryCharstringEncryption(long seed) throws ArrayComparisonFailure
{
byte[] bytes = createRandomByteArray(128, seed);
byte[] encryptedBytes = Type1FontUtil.charstringEncrypt(bytes, 4);
byte[] decryptedBytes = Type1FontUtil.charstringDecrypt(encryptedBytes, 4);
assertArrayEquals("Seed: " + seed, bytes, decryptedBytes);
}
private static byte[] createRandomByteArray(int arrayLength, long seed)
{
byte[] bytes = new byte[arrayLength];
Random ramdom = new Random(seed);
for (int i = 0; i < arrayLength; i++)
{
bytes[i] = (byte) ramdom.nextInt(256);
}
return bytes;
}
}