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17 package org.apache.hadoop.hbase.filter;
18
19 import junit.framework.TestCase;
20 import org.apache.hadoop.hbase.SmallTests;
21 import org.junit.experimental.categories.Category;
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25
26 @Category(SmallTests.class)
27 public class TestBitComparator extends TestCase {
28
29 private static byte[] zeros = new byte[]{0, 0, 0, 0, 0, 0};
30 private static byte[] ones = new byte[]{1, 1, 1, 1, 1, 1};
31 private static byte[] data0 = new byte[]{0, 1, 2, 4, 8, 15};
32 private static byte[] data1 = new byte[]{15, 0, 0, 0, 0, 0};
33 private static byte[] data2 = new byte[]{0, 0, 0, 0, 0, 15};
34 private static byte[] data3 = new byte[]{15, 15, 15, 15, 15};
35
36
37 private static byte[] data1_2 = new byte[]{15, 15, 0, 0, 0, 0, 0, 15};
38 private static byte[] data2_2 = new byte[]{15, 0, 0, 0, 0, 0, 15, 15};
39
40 private final int Equal = 0;
41 private final int NotEqual = 1;
42
43 public void testANDOperation() {
44 testOperation(zeros, ones, BitComparator.BitwiseOp.AND, NotEqual);
45 testOperation(data1, ones, BitComparator.BitwiseOp.AND, Equal);
46 testOperation(data1, data0, BitComparator.BitwiseOp.AND, NotEqual);
47 testOperation(data2, data1, BitComparator.BitwiseOp.AND, NotEqual);
48 testOperation(ones, data0, BitComparator.BitwiseOp.AND, Equal);
49 testOperation(ones, data3, BitComparator.BitwiseOp.AND, NotEqual);
50 }
51
52 public void testOROperation() {
53 testOperation(ones, zeros, BitComparator.BitwiseOp.OR, Equal);
54 testOperation(zeros, zeros, BitComparator.BitwiseOp.OR, NotEqual);
55 testOperation(data1, zeros, BitComparator.BitwiseOp.OR, Equal);
56 testOperation(data2, data1, BitComparator.BitwiseOp.OR, Equal);
57 testOperation(ones, data3, BitComparator.BitwiseOp.OR, NotEqual);
58 }
59
60 public void testXOROperation() {
61 testOperation(ones, zeros, BitComparator.BitwiseOp.XOR, Equal);
62 testOperation(zeros, zeros, BitComparator.BitwiseOp.XOR, NotEqual);
63 testOperation(ones, ones, BitComparator.BitwiseOp.XOR, NotEqual);
64 testOperation(data2, data1, BitComparator.BitwiseOp.XOR, Equal);
65 testOperation(ones, data3, BitComparator.BitwiseOp.XOR, NotEqual);
66 }
67
68 private void testOperation(byte[] data, byte[] comparatorBytes, BitComparator.BitwiseOp operator, int expected) {
69 BitComparator comparator = new BitComparator(comparatorBytes, operator);
70 assertEquals(comparator.compareTo(data), expected);
71 }
72
73 public void testANDOperationWithOffset() {
74 testOperationWithOffset(data1_2, ones, BitComparator.BitwiseOp.AND, Equal);
75 testOperationWithOffset(data1_2, data0, BitComparator.BitwiseOp.AND, NotEqual);
76 testOperationWithOffset(data2_2, data1, BitComparator.BitwiseOp.AND, NotEqual);
77 }
78
79 public void testOROperationWithOffset() {
80 testOperationWithOffset(data1_2, zeros, BitComparator.BitwiseOp.OR, Equal);
81 testOperationWithOffset(data2_2, data1, BitComparator.BitwiseOp.OR, Equal);
82 }
83
84 public void testXOROperationWithOffset() {
85 testOperationWithOffset(data2_2, data1, BitComparator.BitwiseOp.XOR, Equal);
86 }
87
88 private void testOperationWithOffset(byte[] data, byte[] comparatorBytes, BitComparator.BitwiseOp operator, int expected) {
89 BitComparator comparator = new BitComparator(comparatorBytes, operator);
90 assertEquals(comparator.compareTo(data, 1, comparatorBytes.length), expected);
91 }
92
93 @org.junit.Rule
94 public org.apache.hadoop.hbase.ResourceCheckerJUnitRule cu =
95 new org.apache.hadoop.hbase.ResourceCheckerJUnitRule();
96 }
97