/*
 * 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.geode.pdx;

import org.junit.After;
import org.junit.Before;
import org.junit.experimental.categories.Category;

import org.apache.geode.internal.offheap.OffHeapStoredObject;
import org.apache.geode.internal.offheap.NullOffHeapMemoryStats;
import org.apache.geode.internal.offheap.NullOutOfOffHeapMemoryListener;
import org.apache.geode.internal.offheap.MemoryAllocatorImpl;
import org.apache.geode.internal.offheap.StoredObject;
import org.apache.geode.internal.offheap.SlabImpl;
import org.apache.geode.internal.tcp.ByteBufferInputStream.ByteSource;
import org.apache.geode.internal.tcp.ByteBufferInputStream.ByteSourceFactory;
import org.apache.geode.internal.tcp.ByteBufferInputStream.OffHeapByteSource;
import org.apache.geode.test.junit.categories.UnitTest;

@Category(UnitTest.class)
public class OffHeapByteSourceJUnitTest extends ByteSourceJUnitTest {

  @Before
  public final void setUp() throws Exception {
    MemoryAllocatorImpl.createForUnitTest(new NullOutOfOffHeapMemoryListener(),
        new NullOffHeapMemoryStats(), new SlabImpl[] {new SlabImpl(1024 * 1024)});
  }

  @After
  public final void tearDown() throws Exception {
    MemoryAllocatorImpl.freeOffHeapMemory();
  }

  @Override
  protected boolean isTestOffHeap() {
    return true;
  }

  @Override
  protected ByteSource createByteSource(byte[] bytes) {
    StoredObject so = MemoryAllocatorImpl.getAllocator().allocateAndInitialize(bytes, false, false);
    if (so instanceof OffHeapStoredObject) {
      // bypass the factory to make sure that OffHeapByteSource is tested
      return new OffHeapByteSource(so);
    } else {
      // bytes are so small they can be encoded in a long (see DataAsAddress).
      // So for this test just wrap the original bytes.
      return ByteSourceFactory.wrap(bytes);
    }
  }

}