content: /*
   * 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.artemis.tests.unit.core.journal.impl;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import java.io.File;
  import java.nio.ByteBuffer;
  
  import org.apache.activemq.artemis.core.io.SequentialFileFactory;
  import org.apache.activemq.artemis.core.io.aio.AIOSequentialFileFactory;
  import org.apache.activemq.artemis.core.io.nio.NIOSequentialFileFactory;
  import org.apache.activemq.artemis.nativo.jlibaio.LibaioContext;
  import org.apache.activemq.artemis.tests.unit.core.journal.impl.fakes.FakeSequentialFileFactory;
  import org.apache.activemq.artemis.tests.util.ActiveMQTestBase;
  import org.junit.jupiter.api.Test;
  
  public class CleanBufferTest extends ActiveMQTestBase {
  
  
  
     @Test
     public void testCleanOnNIO() {
        SequentialFileFactory factory = new NIOSequentialFileFactory(new File("Whatever"), 1);
  
        testBuffer(factory);
     }
  
     @Test
     public void testCleanOnAIO() {
        if (LibaioContext.isLoaded()) {
           SequentialFileFactory factory = new AIOSequentialFileFactory(new File("./target"), 50);
  
           testBuffer(factory);
        }
     }
  
     @Test
     public void testCleanOnFake() {
        SequentialFileFactory factory = new FakeSequentialFileFactory();
  
        testBuffer(factory);
     }
  
     private void testBuffer(final SequentialFileFactory factory) {
        factory.start();
        ByteBuffer buffer = factory.newBuffer(100);
  
        try {
           for (byte b = 0; b < 100; b++) {
              buffer.put(b);
           }
  
           buffer.rewind();
  
           for (byte b = 0; b < 100; b++) {
              assertEquals(b, buffer.get());
           }
  
           buffer.limit(10);
           factory.clearBuffer(buffer);
           buffer.limit(100);
  
           buffer.rewind();
  
           for (byte b = 0; b < 100; b++) {
              if (b < 10) {
                 assertEquals(0, buffer.get());
              } else {
                 assertEquals(b, buffer.get());
              }
           }
        } finally {
           factory.releaseBuffer(buffer);
           factory.stop();
        }
     }
  
  }
  