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