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.Assert.assertArrayEquals;
021import static org.junit.Assert.assertEquals;
022
023import java.util.ArrayList;
024import java.util.Arrays;
025import org.apache.hadoop.hbase.HBaseClassTestRule;
026import org.apache.hadoop.hbase.testclassification.SmallTests;
027import org.junit.ClassRule;
028import org.junit.Test;
029import org.junit.experimental.categories.Category;
030
031@Category({ SmallTests.class })
032public class TestByteRangeUtils {
033
034  @ClassRule
035  public static final HBaseClassTestRule CLASS_RULE =
036    HBaseClassTestRule.forClass(TestByteRangeUtils.class);
037
038  @Test
039  public void testNumEqualPrefixBytes() {
040    assertEquals(0, ByteRangeUtils.numEqualPrefixBytes(new SimpleByteRange(new byte[] { 1, 2, 3 }),
041      new SimpleByteRange(new byte[] { 4, 5, 6 }), 1));
042    assertEquals(2, ByteRangeUtils.numEqualPrefixBytes(new SimpleByteRange(new byte[] { 1, 2, 3 }),
043      new SimpleByteRange(new byte[] { 0, 1, 2 }), 1));
044  }
045
046  @Test
047  public void testCopyToNewArrays() {
048    assertEquals(new ArrayList<>(), ByteRangeUtils.copyToNewArrays(null));
049    assertArrayEquals(new byte[] { 1, 2, 3 },
050      ByteRangeUtils
051        .copyToNewArrays(new ArrayList<>(Arrays.asList(new SimpleByteRange(new byte[] { 1, 2, 3 }),
052          new SimpleByteRange(new byte[] { 4, 5, 6 }))))
053        .get(0));
054    assertArrayEquals(new byte[] { 4, 5, 6 },
055      ByteRangeUtils
056        .copyToNewArrays(new ArrayList<>(Arrays.asList(new SimpleByteRange(new byte[] { 1, 2, 3 }),
057          new SimpleByteRange(new byte[] { 4, 5, 6 }))))
058        .get(1));
059  }
060
061  @Test
062  public void testFromArrays() {
063    assertEquals(new ArrayList<>(), ByteRangeUtils.fromArrays(null));
064    assertEquals(
065      new ArrayList<>(Arrays.asList(new SimpleMutableByteRange(new byte[] { 1, 2, 3 }),
066        new SimpleMutableByteRange(new byte[] { 4, 5, 6 }))),
067      ByteRangeUtils.fromArrays(
068        new ArrayList<>(Arrays.asList(new byte[] { 1, 2, 3 }, new byte[] { 4, 5, 6 }))));
069  }
070}