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.assertEquals;
021import static org.junit.Assert.assertTrue;
022
023import org.apache.hadoop.hbase.HBaseClassTestRule;
024import org.apache.hadoop.hbase.TableName;
025import org.apache.hadoop.hbase.client.RegionInfoBuilder;
026import org.apache.hadoop.hbase.testclassification.MiscTests;
027import org.apache.hadoop.hbase.testclassification.SmallTests;
028import org.apache.hadoop.hbase.util.HbckRegionInfo.MetaEntry;
029import org.junit.ClassRule;
030import org.junit.Test;
031import org.junit.experimental.categories.Category;
032
033/**
034 * Test the comparator used by Hbck.
035 */
036@Category({ MiscTests.class, SmallTests.class })
037public class TestHBaseFsckComparator {
038
039  @ClassRule
040  public static final HBaseClassTestRule CLASS_RULE =
041    HBaseClassTestRule.forClass(TestHBaseFsckComparator.class);
042
043  TableName table = TableName.valueOf("table1");
044  TableName table2 = TableName.valueOf("table2");
045  byte[] keyStart = Bytes.toBytes("");
046  byte[] keyA = Bytes.toBytes("A");
047  byte[] keyB = Bytes.toBytes("B");
048  byte[] keyC = Bytes.toBytes("C");
049  byte[] keyEnd = Bytes.toBytes("");
050
051  static HbckRegionInfo genHbckInfo(TableName table, byte[] start, byte[] end, int time) {
052    return new HbckRegionInfo(new MetaEntry(
053      RegionInfoBuilder.newBuilder(table).setStartKey(start).setEndKey(end).build(), null, time));
054  }
055
056  @Test
057  public void testEquals() {
058    HbckRegionInfo hi1 = genHbckInfo(table, keyA, keyB, 0);
059    HbckRegionInfo hi2 = genHbckInfo(table, keyA, keyB, 0);
060    assertEquals(0, HbckRegionInfo.COMPARATOR.compare(hi1, hi2));
061    assertEquals(0, HbckRegionInfo.COMPARATOR.compare(hi2, hi1));
062  }
063
064  @Test
065  public void testEqualsInstance() {
066    HbckRegionInfo hi1 = genHbckInfo(table, keyA, keyB, 0);
067    HbckRegionInfo hi2 = hi1;
068    assertEquals(0, HbckRegionInfo.COMPARATOR.compare(hi1, hi2));
069    assertEquals(0, HbckRegionInfo.COMPARATOR.compare(hi2, hi1));
070  }
071
072  @Test
073  public void testDiffTable() {
074    HbckRegionInfo hi1 = genHbckInfo(table, keyA, keyC, 0);
075    HbckRegionInfo hi2 = genHbckInfo(table2, keyA, keyC, 0);
076    assertTrue(HbckRegionInfo.COMPARATOR.compare(hi1, hi2) < 0);
077    assertTrue(HbckRegionInfo.COMPARATOR.compare(hi2, hi1) > 0);
078  }
079
080  @Test
081  public void testDiffStartKey() {
082    HbckRegionInfo hi1 = genHbckInfo(table, keyStart, keyC, 0);
083    HbckRegionInfo hi2 = genHbckInfo(table, keyA, keyC, 0);
084    assertTrue(HbckRegionInfo.COMPARATOR.compare(hi1, hi2) < 0);
085    assertTrue(HbckRegionInfo.COMPARATOR.compare(hi2, hi1) > 0);
086  }
087
088  @Test
089  public void testDiffEndKey() {
090    HbckRegionInfo hi1 = genHbckInfo(table, keyA, keyB, 0);
091    HbckRegionInfo hi2 = genHbckInfo(table, keyA, keyC, 0);
092    assertTrue(HbckRegionInfo.COMPARATOR.compare(hi1, hi2) < 0);
093    assertTrue(HbckRegionInfo.COMPARATOR.compare(hi2, hi1) > 0);
094  }
095
096  @Test
097  public void testAbsEndKey() {
098    HbckRegionInfo hi1 = genHbckInfo(table, keyA, keyC, 0);
099    HbckRegionInfo hi2 = genHbckInfo(table, keyA, keyEnd, 0);
100    assertTrue(HbckRegionInfo.COMPARATOR.compare(hi1, hi2) < 0);
101    assertTrue(HbckRegionInfo.COMPARATOR.compare(hi2, hi1) > 0);
102  }
103}