/**
* 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.util;
import org.apache.hadoop.hbase.testclassification.MiscTests;
import org.apache.hadoop.hbase.testclassification.SmallTests;
import org.junit.Assert;
import org.junit.Test;
import org.junit.experimental.categories.Category;
@Category({MiscTests.class, SmallTests.class})
public class TestSimpleMutableByteRange {
@Test
public void testEmpty(){
Assert.assertTrue(SimpleMutableByteRange.isEmpty(null));
ByteRange r = new SimpleMutableByteRange();
Assert.assertTrue(SimpleMutableByteRange.isEmpty(r));
Assert.assertTrue(r.isEmpty());
r.set(new byte[0]);
Assert.assertEquals(0, r.getBytes().length);
Assert.assertEquals(0, r.getOffset());
Assert.assertEquals(0, r.getLength());
Assert.assertTrue(Bytes.equals(new byte[0], r.deepCopyToNewArray()));
Assert.assertEquals(0, r.compareTo(new SimpleMutableByteRange(new byte[0], 0, 0)));
Assert.assertEquals(0, r.hashCode());
}
@Test
public void testBasics() {
ByteRange r = new SimpleMutableByteRange(new byte[] { 1, 3, 2 });
Assert.assertFalse(SimpleMutableByteRange.isEmpty(r));
Assert.assertNotNull(r.getBytes());//should be empty byte[], but could change this behavior
Assert.assertEquals(3, r.getBytes().length);
Assert.assertEquals(0, r.getOffset());
Assert.assertEquals(3, r.getLength());
//cloning (deep copying)
Assert.assertTrue(Bytes.equals(new byte[]{1, 3, 2}, r.deepCopyToNewArray()));
Assert.assertNotSame(r.getBytes(), r.deepCopyToNewArray());
//hash code
Assert.assertTrue(r.hashCode() > 0);
Assert.assertEquals(r.hashCode(), r.deepCopy().hashCode());
//copying to arrays
byte[] destination = new byte[]{-59};//junk
r.deepCopySubRangeTo(2, 1, destination, 0);
Assert.assertTrue(Bytes.equals(new byte[]{2}, destination));
//set length
r.setLength(1);
Assert.assertTrue(Bytes.equals(new byte[]{1}, r.deepCopyToNewArray()));
r.setLength(2);//verify we retained the 2nd byte, but dangerous in real code
Assert.assertTrue(Bytes.equals(new byte[]{1, 3}, r.deepCopyToNewArray()));
}
@Test
public void testPutandGetPrimitiveTypes() throws Exception {
ByteRange r = new SimpleMutableByteRange(100);
int offset = 0;
int i1 = 18, i2 = 2;
short s1 = 0;
long l1 = 1234L, l2 = 0;
r.putInt(offset, i1);
offset += Bytes.SIZEOF_INT;
r.putInt(offset, i2);
offset += Bytes.SIZEOF_INT;
r.putShort(offset, s1);
offset += Bytes.SIZEOF_SHORT;
r.putLong(offset, l1);
offset += Bytes.SIZEOF_LONG;
int len = r.putVLong(offset, l1);
offset += len;
len = r.putVLong(offset, l2);
offset += len;
len = r.putVLong(offset, Long.MAX_VALUE);
offset += len;
len = r.putVLong(offset, Long.MIN_VALUE);
offset = 0;
Assert.assertEquals(i1, r.getInt(offset));
offset += Bytes.SIZEOF_INT;
Assert.assertEquals(i2, r.getInt(offset));
offset += Bytes.SIZEOF_INT;
Assert.assertEquals(s1, r.getShort(offset));
offset += Bytes.SIZEOF_SHORT;
Assert.assertEquals(l1, r.getLong(offset));
offset += Bytes.SIZEOF_LONG;
Assert.assertEquals(l1, r.getVLong(offset));
offset += SimpleByteRange.getVLongSize(l1);
Assert.assertEquals(l2, r.getVLong(offset));
offset += SimpleByteRange.getVLongSize(l2);
Assert.assertEquals(Long.MAX_VALUE, r.getVLong(offset));
offset += SimpleByteRange.getVLongSize(Long.MAX_VALUE);
Assert.assertEquals(Long.MIN_VALUE, r.getVLong(offset));
}
}