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 java.math.BigDecimal;
021import org.apache.hadoop.hbase.HBaseClassTestRule;
022import org.apache.hadoop.hbase.testclassification.FilterTests;
023import org.apache.hadoop.hbase.testclassification.SmallTests;
024import org.apache.hadoop.hbase.util.Bytes;
025import org.junit.Assert;
026import org.junit.ClassRule;
027import org.junit.Test;
028import org.junit.experimental.categories.Category;
029
030@Category({ FilterTests.class, SmallTests.class })
031public class TestBigDecimalComparator {
032
033  @ClassRule
034  public static final HBaseClassTestRule CLASS_RULE =
035      HBaseClassTestRule.forClass(TestBigDecimalComparator.class);
036
037  @Test
038  public void testObjectEquals() {
039    BigDecimal bd = new BigDecimal(Double.MIN_VALUE);
040    // Check that equals returns true for identical objects
041    final BigDecimalComparator bdc = new BigDecimalComparator(bd);
042    Assert.assertTrue(bdc.equals(bdc));
043    Assert.assertEquals(bdc.hashCode(), bdc.hashCode());
044
045    // Check that equals returns true for the same object
046    final BigDecimalComparator bdc1 = new BigDecimalComparator(bd);
047    final BigDecimalComparator bdc2 = new BigDecimalComparator(bd);
048    Assert.assertTrue(bdc1.equals(bdc2));
049    Assert.assertEquals(bdc1.hashCode(), bdc2.hashCode());
050
051    // Check that equals returns false for different objects
052    final BigDecimalComparator bdc3 = new BigDecimalComparator(bd);
053    final BigDecimalComparator bdc4 = new BigDecimalComparator(new BigDecimal(Long.MIN_VALUE));
054    Assert.assertFalse(bdc3.equals(bdc4));
055    Assert.assertNotEquals(bdc3.hashCode(), bdc4.hashCode());
056
057    // Check that equals returns false for a different type
058    final BigDecimalComparator bdc5 = new BigDecimalComparator(bd);
059    Assert.assertFalse(bdc5.equals(0));
060  }
061
062  @Test
063  public void testEqualsValue() {
064    // given
065    BigDecimal bd1 = new BigDecimal(Double.MAX_VALUE);
066    BigDecimal bd2 = new BigDecimal(Double.MIN_VALUE);
067    byte[] value1 = Bytes.toBytes(bd1);
068    byte[] value2 = Bytes.toBytes(bd2);
069    BigDecimalComparator comparator1 = new BigDecimalComparator(bd1);
070    BigDecimalComparator comparator2 = new BigDecimalComparator(bd2);
071
072    // when
073    int comp1 = comparator1.compareTo(value1);
074    int comp2 = comparator2.compareTo(value2);
075
076    // then
077    Assert.assertEquals(0, comp1);
078    Assert.assertEquals(0, comp2);
079  }
080
081  @Test
082  public void testGreaterThanValue() {
083    // given
084    byte[] val1 = Bytes.toBytes(new BigDecimal("1000000000000000000000000000000.9999999999999999"));
085    byte[] val2 = Bytes.toBytes(new BigDecimal(0));
086    byte[] val3 = Bytes.toBytes(new BigDecimal(Double.MIN_VALUE));
087    BigDecimal bd = new BigDecimal(Double.MAX_VALUE);
088    BigDecimalComparator comparator = new BigDecimalComparator(bd);
089
090    // when
091    int comp1 = comparator.compareTo(val1);
092    int comp2 = comparator.compareTo(val2);
093    int comp3 = comparator.compareTo(val3);
094
095    // then
096    Assert.assertEquals(1, comp1);
097    Assert.assertEquals(1, comp2);
098    Assert.assertEquals(1, comp3);
099  }
100
101  @Test
102  public void testLessThanValue() {
103    // given
104    byte[] val1 = Bytes.toBytes(new BigDecimal("-1000000000000000000000000000000"));
105    byte[] val2 = Bytes.toBytes(new BigDecimal(0));
106    byte[] val3 = Bytes.toBytes(new BigDecimal(1));
107    BigDecimal bd = new BigDecimal("-1000000000000000000000000000000.0000000000000001");
108    BigDecimalComparator comparator = new BigDecimalComparator(bd);
109
110    // when
111    int comp1 = comparator.compareTo(val1);
112    int comp2 = comparator.compareTo(val2);
113    int comp3 = comparator.compareTo(val3);
114
115    // then
116    Assert.assertEquals(-1, comp1);
117    Assert.assertEquals(-1, comp2);
118    Assert.assertEquals(-1, comp3);
119  }
120
121}