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1
5 package org.h2.test.unit;
6
7 import java.util.BitSet  ;
8 import java.util.Random ;
9
10 import org.h2.test.TestBase;
11 import org.h2.util.BitField;
12
13
16
17 public class TestBitField extends TestBase {
18
19 public void test() throws Exception {
20 testRandom();
21 testGetSet();
22 }
23
24 void testRandom() throws Exception {
25 BitField bits = new BitField();
26 BitSet set = new BitSet ();
27 int max = 300;
28 int count = 100000;
29 Random random = new Random (1);
30 for(int i=0; i<count; i++) {
31 int idx = random.nextInt(max);
32 if(random.nextBoolean()) {
33 if(random.nextBoolean()) {
34 bits.set(idx);
35 set.set(idx);
36 } else {
37 bits.clear(idx);
38 set.clear(idx);
39 }
40 } else {
41 check(bits.get(idx), set.get(idx));
42 check(bits.nextClearBit(idx), set.nextClearBit(idx));
43 check(bits.nextSetBit(idx), set.nextSetBit(idx));
44 }
45 }
46 }
47
48 void testGetSet() throws Exception {
49 BitField bits = new BitField();
50 for(int i=0; i<10000; i++) {
51 bits.set(i);
52 if(!bits.get(i)) {
53 throw new Exception ("not set: "+i);
54 }
55 if(bits.get(i+1)) {
56 throw new Exception ("set: "+i);
57 }
58 }
59 for(int i=0; i<10000; i++) {
60 if(!bits.get(i)) {
61 throw new Exception ("not set: "+i);
62 }
63 }
64 for(int i=0; i<1000; i++) {
65 int k = bits.nextClearBit(0);
66 if(k != 10000) {
67 throw new Exception ("" + k);
68 }
69 }
70 }
71 }
72 |
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