/**
* Copyright The Apache Software Foundation
*
* 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.hadoop.hbase.nio;
import static org.junit.Assert.assertEquals;
import java.nio.ByteBuffer;
import org.apache.hadoop.hbase.testclassification.MiscTests;
import org.apache.hadoop.hbase.testclassification.SmallTests;
import org.junit.Test;
import org.junit.experimental.categories.Category;
@Category({ MiscTests.class, SmallTests.class })
public class TestSingleByteBuff {
@Test
public void testPositionalReads() {
// Off heap buffer
testPositionalReads(ByteBuffer.allocateDirect(15));
// On heap buffer
testPositionalReads(ByteBuffer.allocate(15));
}
private void testPositionalReads(ByteBuffer bb) {
int i = 9;
short s = 5;
byte b = 2;
long l = 1234L;
bb.putInt(i);
bb.putLong(l);
bb.put(b);
bb.putShort(s);
SingleByteBuff sbb = new SingleByteBuff(bb);
assertEquals(i, sbb.getInt(0));
assertEquals(l, sbb.getLong(4));
assertEquals(b, sbb.get(12));
assertEquals(s, sbb.getShort(13));
sbb.rewind();
assertEquals(i, sbb.getIntAfterPosition(0));
assertEquals(l, sbb.getLongAfterPosition(4));
assertEquals(b, sbb.getByteAfterPosition(12));
assertEquals(s, sbb.getShortAfterPosition(13));
}
}