001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.util;
019
020import static org.junit.jupiter.api.Assertions.assertArrayEquals;
021import static org.junit.jupiter.api.Assertions.assertEquals;
022
023import java.util.ArrayList;
024import java.util.Arrays;
025import org.apache.hadoop.hbase.testclassification.MiscTests;
026import org.apache.hadoop.hbase.testclassification.SmallTests;
027import org.junit.jupiter.api.Tag;
028import org.junit.jupiter.api.Test;
029
030@Tag(MiscTests.TAG)
031@Tag(SmallTests.TAG)
032public class TestByteRangeUtils {
033
034  @Test
035  public void testNumEqualPrefixBytes() {
036    assertEquals(0, ByteRangeUtils.numEqualPrefixBytes(new SimpleByteRange(new byte[] { 1, 2, 3 }),
037      new SimpleByteRange(new byte[] { 4, 5, 6 }), 1));
038    assertEquals(2, ByteRangeUtils.numEqualPrefixBytes(new SimpleByteRange(new byte[] { 1, 2, 3 }),
039      new SimpleByteRange(new byte[] { 0, 1, 2 }), 1));
040  }
041
042  @Test
043  public void testCopyToNewArrays() {
044    assertEquals(new ArrayList<>(), ByteRangeUtils.copyToNewArrays(null));
045    assertArrayEquals(new byte[] { 1, 2, 3 },
046      ByteRangeUtils
047        .copyToNewArrays(new ArrayList<>(Arrays.asList(new SimpleByteRange(new byte[] { 1, 2, 3 }),
048          new SimpleByteRange(new byte[] { 4, 5, 6 }))))
049        .get(0));
050    assertArrayEquals(new byte[] { 4, 5, 6 },
051      ByteRangeUtils
052        .copyToNewArrays(new ArrayList<>(Arrays.asList(new SimpleByteRange(new byte[] { 1, 2, 3 }),
053          new SimpleByteRange(new byte[] { 4, 5, 6 }))))
054        .get(1));
055  }
056
057  @Test
058  public void testFromArrays() {
059    assertEquals(new ArrayList<>(), ByteRangeUtils.fromArrays(null));
060    assertEquals(
061      new ArrayList<>(Arrays.asList(new SimpleMutableByteRange(new byte[] { 1, 2, 3 }),
062        new SimpleMutableByteRange(new byte[] { 4, 5, 6 }))),
063      ByteRangeUtils.fromArrays(
064        new ArrayList<>(Arrays.asList(new byte[] { 1, 2, 3 }, new byte[] { 4, 5, 6 }))));
065  }
066}