/**
* 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.regionserver.wal;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import org.apache.hadoop.hbase.testclassification.RegionServerTests;
import org.apache.hadoop.hbase.testclassification.SmallTests;
import org.apache.hadoop.hbase.io.util.Dictionary;
import org.apache.hadoop.hbase.io.util.LRUDictionary;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.experimental.categories.Category;
/**
* Test our compressor class.
*/
@Category({RegionServerTests.class, SmallTests.class})
public class TestCompressor {
@BeforeClass
public static void setUpBeforeClass() throws Exception {
}
@Test
public void testToShort() {
short s = 1;
assertEquals(s, Compressor.toShort((byte)0, (byte)1));
s <<= 8;
assertEquals(s, Compressor.toShort((byte)1, (byte)0));
}
@Test (expected = IllegalArgumentException.class)
public void testNegativeToShort() {
Compressor.toShort((byte)0xff, (byte)0xff);
}
@Test
public void testCompressingWithNullDictionaries() throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DataOutputStream dos = new DataOutputStream(baos);
byte [] blahBytes = Bytes.toBytes("blah");
Compressor.writeCompressed(blahBytes, 0, blahBytes.length, dos, null);
dos.close();
byte [] dosbytes = baos.toByteArray();
DataInputStream dis =
new DataInputStream(new ByteArrayInputStream(dosbytes));
byte [] product = Compressor.readCompressed(dis, null);
assertTrue(Bytes.equals(blahBytes, product));
}
@Test
public void testCompressingWithClearDictionaries() throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DataOutputStream dos = new DataOutputStream(baos);
Dictionary dictionary = new LRUDictionary();
dictionary.init(Short.MAX_VALUE);
byte [] blahBytes = Bytes.toBytes("blah");
Compressor.writeCompressed(blahBytes, 0, blahBytes.length, dos, dictionary);
dos.close();
byte [] dosbytes = baos.toByteArray();
DataInputStream dis =
new DataInputStream(new ByteArrayInputStream(dosbytes));
dictionary = new LRUDictionary();
dictionary.init(Short.MAX_VALUE);
byte [] product = Compressor.readCompressed(dis, dictionary);
assertTrue(Bytes.equals(blahBytes, product));
}
}