BooleanStreamTest.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.AssertionFailedError;
import junit.framework.TestCase;

/**
 *
 */
public class BooleanStreamTest extends TestCase {

   protected OpenWireFormat openWireformat;
   protected int endOfStreamMarker = 0x12345678;
   int numberOfBytes = 8 * 200;

   interface BooleanValueSet {

      boolean getBooleanValueFor(int index, int count);
   }

   public void testBooleanMarshallingUsingAllTrue() throws Exception {
      testBooleanStream(numberOfBytes, new BooleanValueSet() {
         @Override
         public boolean getBooleanValueFor(int index, int count) {
            return true;
         }
      });
   }

   public void testBooleanMarshallingUsingAllFalse() throws Exception {
      testBooleanStream(numberOfBytes, new BooleanValueSet() {
         @Override
         public boolean getBooleanValueFor(int index, int count) {
            return false;
         }
      });
   }

   public void testBooleanMarshallingUsingOddAlternateTrueFalse() throws Exception {
      testBooleanStream(numberOfBytes, new BooleanValueSet() {
         @Override
         public boolean getBooleanValueFor(int index, int count) {
            return (index & 1) == 0;
         }
      });
   }

   public void testBooleanMarshallingUsingEvenAlternateTrueFalse() throws Exception {
      testBooleanStream(numberOfBytes, new BooleanValueSet() {
         @Override
         public boolean getBooleanValueFor(int index, int count) {
            return (index & 1) != 0;
         }
      });
   }

   protected void testBooleanStream(int numberOfBytes, BooleanValueSet valueSet) throws Exception {
      for (int i = 0; i < numberOfBytes; i++) {
         try {
            assertMarshalBooleans(i, valueSet);
         } catch (Throwable e) {
            throw (AssertionFailedError) new AssertionFailedError("Iteration failed at: " + i).initCause(e);
         }
      }
   }

   protected void assertMarshalBooleans(int count, BooleanValueSet valueSet) throws Exception {
      BooleanStream bs = new BooleanStream();
      for (int i = 0; i < count; i++) {
         bs.writeBoolean(valueSet.getBooleanValueFor(i, count));
      }
      ByteArrayOutputStream buffer = new ByteArrayOutputStream();
      DataOutputStream ds = new DataOutputStream(buffer);
      bs.marshal(ds);
      ds.writeInt(endOfStreamMarker);

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

      ByteArrayInputStream in = new ByteArrayInputStream(buffer.toByteArray());
      DataInputStream dis = new DataInputStream(in);
      bs = new BooleanStream();
      try {
         bs.unmarshal(dis);
      } catch (Exception e) {
         e.printStackTrace();
         fail("Failed to unmarshal: " + count + " booleans: " + e);
      }

      for (int i = 0; i < count; i++) {
         boolean expected = valueSet.getBooleanValueFor(i, count);
         // /System.out.println("Unmarshaling value: " + i + " = " + expected
         // + " out of: " + count);

         try {
            boolean actual = bs.readBoolean();
            assertEquals("value of object: " + i + " was: " + actual, expected, actual);
         } catch (IOException e) {
            e.printStackTrace();
            fail("Failed to parse boolean: " + i + " out of: " + count + " due to: " + e);
         }
      }
      int marker = dis.readInt();
      assertEquals("Marker int when unmarshalling: " + count + " booleans", Integer.toHexString(endOfStreamMarker), Integer.toHexString(marker));

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

   @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;
   }

}