package org.apache.cassandra.cache;
/*
*
* 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.
*
*/
import java.nio.ByteBuffer;
import java.util.UUID;
import junit.framework.Assert;
import org.apache.cassandra.db.ColumnIndex;
import org.apache.cassandra.db.DeletionInfo;
import org.apache.cassandra.db.DeletionTime;
import org.apache.cassandra.db.RowIndexEntry;
import org.apache.cassandra.utils.ObjectSizes;
import org.github.jamm.MemoryMeter;
import org.junit.Test;
public class ObjectSizeTest
{
public static final MemoryMeter meter = new MemoryMeter().omitSharedBufferOverhead();
@Test
public void testArraySizes()
{
long size = ObjectSizes.getArraySize(0, 1);
long size2 = meter.measureDeep(new byte[0]);
Assert.assertEquals(size, size2);
}
@Test
public void testBiggerArraySizes()
{
long size = ObjectSizes.getArraySize(0, 1);
long size2 = meter.measureDeep(new byte[0]);
Assert.assertEquals(size, size2);
size = ObjectSizes.getArraySize(8, 1);
size2 = meter.measureDeep(new byte[8]);
Assert.assertEquals(size, size2);
}
@Test
public void testKeyCacheKey()
{
KeyCacheKey key = new KeyCacheKey(null, ByteBuffer.wrap(new byte[0]));
long size = key.memorySize();
long size2 = meter.measureDeep(key);
Assert.assertEquals(size, size2);
}
@Test
public void testKeyCacheValue()
{
RowIndexEntry entry = new RowIndexEntry(123);
long size = entry.memorySize();
long size2 = meter.measureDeep(entry);
Assert.assertEquals(size, size2);
}
@Test
public void testKeyCacheValueWithDelInfo()
{
RowIndexEntry entry = RowIndexEntry.create(123, new DeletionTime(123, 123), ColumnIndex.nothing());
long size = entry.memorySize();
long size2 = meter.measureDeep(entry);
Assert.assertEquals(size, size2);
}
@Test
public void testRowCacheKey()
{
UUID id = UUID.randomUUID();
RowCacheKey key = new RowCacheKey(id, ByteBuffer.wrap(new byte[11]));
long size = key.memorySize();
long size2 = meter.measureDeep(key) - meter.measureDeep(id);
Assert.assertEquals(size, size2);
}
@Test
public void testRowCacheSentinel()
{
RowCacheSentinel sentinel = new RowCacheSentinel(123);
long size = sentinel.memorySize();
long size2 = meter.measureDeep(sentinel);
Assert.assertEquals(size, size2);
}
}