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17 package org.apache.hadoop.hbase.filter;
18
19 import junit.framework.TestCase;
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24 public class TestBitComparator extends TestCase {
25
26 private static byte[] zeros = new byte[]{0, 0, 0, 0, 0, 0};
27 private static byte[] ones = new byte[]{1, 1, 1, 1, 1, 1};
28 private static byte[] data0 = new byte[]{0, 1, 2, 4, 8, 15};
29 private static byte[] data1 = new byte[]{15, 0, 0, 0, 0, 0};
30 private static byte[] data2 = new byte[]{0, 0, 0, 0, 0, 15};
31 private static byte[] data3 = new byte[]{15, 15, 15, 15, 15};
32 private final int Equal = 0;
33 private final int NotEqual = 1;
34
35 public void testANDOperation() {
36 testOperation(zeros, ones, BitComparator.BitwiseOp.AND, NotEqual);
37 testOperation(data1, ones, BitComparator.BitwiseOp.AND, Equal);
38 testOperation(data1, data0, BitComparator.BitwiseOp.AND, NotEqual);
39 testOperation(data2, data1, BitComparator.BitwiseOp.AND, NotEqual);
40 testOperation(ones, data0, BitComparator.BitwiseOp.AND, Equal);
41 testOperation(ones, data3, BitComparator.BitwiseOp.AND, NotEqual);
42 }
43
44 public void testOROperation() {
45 testOperation(ones, zeros, BitComparator.BitwiseOp.OR, Equal);
46 testOperation(zeros, zeros, BitComparator.BitwiseOp.OR, NotEqual);
47 testOperation(data1, zeros, BitComparator.BitwiseOp.OR, Equal);
48 testOperation(data2, data1, BitComparator.BitwiseOp.OR, Equal);
49 testOperation(ones, data3, BitComparator.BitwiseOp.OR, NotEqual);
50 }
51
52 public void testXOROperation() {
53 testOperation(ones, zeros, BitComparator.BitwiseOp.XOR, Equal);
54 testOperation(zeros, zeros, BitComparator.BitwiseOp.XOR, NotEqual);
55 testOperation(ones, ones, BitComparator.BitwiseOp.XOR, NotEqual);
56 testOperation(data2, data1, BitComparator.BitwiseOp.XOR, Equal);
57 testOperation(ones, data3, BitComparator.BitwiseOp.XOR, NotEqual);
58 }
59
60 private void testOperation(byte[] data, byte[] comparatorBytes, BitComparator.BitwiseOp operator, int expected) {
61 BitComparator comparator = new BitComparator(comparatorBytes, operator);
62 assertEquals(comparator.compareTo(data), expected);
63 }
64 }