/*
 * 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 flex.messaging.util;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

public class HexTest extends TestCase
{
    public HexTest(String name)
    {
        super(name);
    }

    public static Test suite()
    {
        return new TestSuite(HexTest.class);
    }

    /**
     * Try encoding and decoding 10,000 random combinations of bytes.
     */
    public void testEncodingAndDecoding()
    {
        int randomLimit = 500;
        boolean success = true;

        for (int myCount = 0; myCount < 10000; myCount++)
        {
            byte raw [] = new byte[(int)(Math.random() * randomLimit)];

            for (int i = 0; i < raw.length; ++i)
            {
                if ((i % 1024) < 256)
                    raw[i] = (byte)(i % 1024);
                else
                    raw[i] = (byte)((int)(Math.random() * 255) - 128);
            }
            Hex.Encoder encoder = new Hex.Encoder(100);
            encoder.encode(raw);

            String encoded = encoder.drain();

            Hex.Decoder decoder = new Hex.Decoder();
            decoder.decode(encoded);
            byte check[] = decoder.flush();

            if (check.length != raw.length)
            {
                success = false;
            }
            else
            {
                for (int i = 0; i < check.length; ++i)
                {
                    if (check[i] != raw[i])
                    {
                        success = false;
                        break;
                    }
                }
            }

            if (!success)
            {
                break;
            }
        }

        assertTrue(success);
    }
}