NumberRangesWhileMarshallingTest.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.activemq.openwire;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;

import junit.framework.TestCase;

import org.apache.activemq.command.ActiveMQTextMessage;
import org.apache.activemq.command.SessionId;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 *
 */
public class NumberRangesWhileMarshallingTest extends TestCase {

   private static final Logger LOG = LoggerFactory.getLogger(NumberRangesWhileMarshallingTest.class);

   protected String connectionId = "Cheese";
   protected ByteArrayOutputStream buffer = new ByteArrayOutputStream();
   protected DataOutputStream ds = new DataOutputStream(buffer);
   protected OpenWireFormat openWireformat;
   protected int endOfStreamMarker = 0x12345678;

   public void testLongNumberRanges() throws Exception {
      long[] numberValues = {
         // bytes
         0, 1, 0x7e, 0x7f, 0x80, 0x81, 0xf0, 0xff,
         // shorts
         0x7eff, 0x7fffL, 0x8001L, 0x8000L, 0xe000L, 0xe0001L, 0xff00L, 0xffffL,
         // ints
         0x10000L, 0x700000L, 0x12345678L, 0x72345678L, 0x7fffffffL, 0x80000000L, 0x80000001L, 0xE0000001L, 0xFFFFFFFFL,
         // 3 byte longs
         0x123456781L, 0x1234567812L, 0x12345678123L, 0x123456781234L, 0x1234567812345L, 0x12345678123456L, 0x7e345678123456L, 0x7fffffffffffffL, 0x80000000000000L, 0x80000000000001L, 0xe0000000000001L, 0xffffffffffffffL,
         // 4 byte longs
         0x1234567812345678L, 0x7fffffffffffffffL, 0x8000000000000000L, 0x8000000000000001L, 0xe000000000000001L, 0xffffffffffffffffL, 1};

      for (int i = 0; i < numberValues.length; i++) {
         long value = numberValues[i];

         SessionId object = new SessionId();
         object.setConnectionId(connectionId);
         object.setValue(value);
         writeObject(object);
      }
      ds.writeInt(endOfStreamMarker);

      // now lets read from the stream
      ds.close();

      ByteArrayInputStream in = new ByteArrayInputStream(buffer.toByteArray());
      DataInputStream dis = new DataInputStream(in);
      for (int i = 0; i < numberValues.length; i++) {
         long value = numberValues[i];
         String expected = Long.toHexString(value);
         LOG.info("Unmarshaling value: " + i + " = " + expected);

         SessionId command = (SessionId) openWireformat.unmarshal(dis);
         assertEquals("connection ID in object: " + i, connectionId, command.getConnectionId());
         String actual = Long.toHexString(command.getValue());
         assertEquals("value of object: " + i + " was: " + actual, expected, actual);
      }
      int marker = dis.readInt();
      assertEquals("Marker int", Integer.toHexString(endOfStreamMarker), Integer.toHexString(marker));

      // lets try read and we should get an exception
      try {
         byte value = dis.readByte();
         fail("Should have reached the end of the stream: " + value);
      } catch (IOException e) {
         // worked!
      }
   }

   public void testMaxFrameSize() throws Exception {
      OpenWireFormat wf = new OpenWireFormat();
      wf.setMaxFrameSize(10);
      ActiveMQTextMessage msg = new ActiveMQTextMessage();
      msg.setText("This is a test");

      writeObject(msg);
      ds.writeInt(endOfStreamMarker);

      // now lets read from the stream
      ds.close();

      ByteArrayInputStream in = new ByteArrayInputStream(buffer.toByteArray());
      DataInputStream dis = new DataInputStream(in);

      try {
         wf.unmarshal(dis);
      } catch (IOException ioe) {
         return;
      }

      fail("Should fail because of the large frame size");

   }

   public void testDefaultMaxFrameSizeUnlimited() {
      OpenWireFormat wf = new OpenWireFormat();
      assertEquals(Long.MAX_VALUE, wf.getMaxFrameSize());
   }

   @Override
   protected void setUp() throws Exception {
      super.setUp();
      openWireformat = createOpenWireFormat();
   }

   protected OpenWireFormat createOpenWireFormat() {
      OpenWireFormat wf = new OpenWireFormat();
      wf.setCacheEnabled(true);
      wf.setStackTraceEnabled(false);
      wf.setVersion(1);
      return wf;
   }

   private void writeObject(Object object) throws IOException {
      openWireformat.marshal(object, ds);
   }
}