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.filter;
019
020import org.apache.hadoop.hbase.HBaseClassTestRule;
021import org.apache.hadoop.hbase.testclassification.FilterTests;
022import org.apache.hadoop.hbase.testclassification.SmallTests;
023import org.junit.Assert;
024import org.junit.ClassRule;
025import org.junit.Test;
026import org.junit.experimental.categories.Category;
027
028@Category({ FilterTests.class, SmallTests.class })
029public class TestNullComparator {
030
031  @ClassRule
032  public static final HBaseClassTestRule CLASS_RULE =
033    HBaseClassTestRule.forClass(TestNullComparator.class);
034
035  @Test
036  public void testNullValue() {
037    // given
038    byte[] value = null;
039    NullComparator comparator = new NullComparator();
040
041    // when
042    int comp1 = comparator.compareTo(value);
043    int comp2 = comparator.compareTo(value, 5, 15);
044
045    // then
046    Assert.assertEquals(0, comp1);
047    Assert.assertEquals(0, comp2);
048  }
049
050  @Test
051  public void testNonNullValue() {
052    // given
053    byte[] value = new byte[] { 0, 1, 2, 3, 4, 5 };
054    NullComparator comparator = new NullComparator();
055
056    // when
057    int comp1 = comparator.compareTo(value);
058    int comp2 = comparator.compareTo(value, 1, 3);
059
060    // then
061    Assert.assertEquals(1, comp1);
062    Assert.assertEquals(1, comp2);
063  }
064
065  @Test
066  public void testEmptyValue() {
067    // given
068    byte[] value = new byte[] { 0 };
069    NullComparator comparator = new NullComparator();
070
071    // when
072    int comp1 = comparator.compareTo(value);
073    int comp2 = comparator.compareTo(value, 1, 3);
074
075    // then
076    Assert.assertEquals(1, comp1);
077    Assert.assertEquals(1, comp2);
078  }
079
080}