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1
8
9 package com.sleepycat.je.util;
10
11 import java.io.File  ;
12
13 import junit.framework.TestCase;
14
15 import com.sleepycat.je.DbInternal;
16 import com.sleepycat.je.Environment;
17 import com.sleepycat.je.EnvironmentConfig;
18 import com.sleepycat.je.log.FileManager;
19 import com.sleepycat.je.utilint.DbLsn;
20
21 public class DbLsnTest extends TestCase {
22 long[] values = { 0xFF, 0xFFFF, 0xFFFFFF, 0x7FFFFFFF, 0xFFFFFFFFL };
23
24 public void testDbLsn() {
25 for (int i = 0; i < values.length; i++) {
26 long value = values[i];
27 long lsn = DbLsn.makeLsn(value, value);
28 assertTrue((DbLsn.getFileNumber(lsn) == value) &&
29 (DbLsn.getFileOffset(lsn) == value));
30 }
31 }
32
33 public void testComparableEquality() {
34
35
36
37 int lastValue = values.length - 1;
38 for (int i = 0; i < lastValue; i++) {
39 long value = values[i];
40 long lsn1 = DbLsn.makeLsn(value, value);
41 long lsn2 = DbLsn.makeLsn(value, value);
42 assertTrue(DbLsn.compareTo(lsn1, lsn2) == 0);
43 }
44
45
46 assertTrue(DbLsn.makeLsn(values[lastValue],
47 values[lastValue]) ==
48 DbLsn.makeLsn(values[lastValue],
49 values[lastValue]));
50 }
51
52 public void testComparableNullPointerException() {
53
54
55 try {
56 long lsn1 = DbLsn.makeLsn(0, 0);
57 DbLsn.compareTo(lsn1, DbLsn.NULL_LSN);
58 fail("compareTo(null) didn't throw NullPointerException");
59 } catch (NullPointerException NPE) {
60 }
61
62 try {
63 long lsn1 = DbLsn.makeLsn(0, 0);
64 DbLsn.compareTo(DbLsn.NULL_LSN, lsn1);
65 fail("compareTo(null) didn't throw NullPointerException");
66 } catch (NullPointerException NPE) {
67 }
68 }
69
70 public void testComparableInequalityFileNumber() {
71
72
73
74 int lastValue = values.length - 1;
75 for (int i = 0; i < lastValue; i++) {
76 long value = values[i];
77 long lsn1 = DbLsn.makeLsn(value, value);
78 long lsn2 = DbLsn.makeLsn(0, value);
79 assertTrue(DbLsn.compareTo(lsn1, lsn2) == 1);
80 assertTrue(DbLsn.compareTo(lsn2, lsn1) == -1);
81 }
82
83
84 long lsn1 = DbLsn.makeLsn(values[lastValue], values[lastValue]);
85 long lsn2 = DbLsn.makeLsn(0, values[lastValue]);
86 try {
87 assertTrue(DbLsn.compareTo(lsn1, lsn2) == 1);
88 } catch (NullPointerException NPE) {
89 }
90
91 try {
92 assertTrue(DbLsn.compareTo(lsn2, lsn1) == 1);
93 } catch (NullPointerException NPE) {
94 }
95 }
96
97 public void testComparableInequalityFileOffset() {
98
99
100 for (int i = 0; i < values.length - 1; i++) {
101 long value = values[i];
102 long lsn1 = DbLsn.makeLsn(value, value);
103 long lsn2 = DbLsn.makeLsn(value, 0);
104
105 if (lsn1 != DbLsn.NULL_LSN &&
106 lsn2 != DbLsn.NULL_LSN) {
107 assertTrue(DbLsn.compareTo(lsn1, lsn2) == 1);
108 assertTrue(DbLsn.compareTo(lsn2, lsn1) == -1);
109 }
110 }
111 }
112
113 public void testSubtractNoCleaning() {
114 long a = DbLsn.makeLsn(1, 10);
115 long b = DbLsn.makeLsn(3, 40);
116 assertEquals(230, DbLsn.getNoCleaningDistance(b, a, 100));
117 assertEquals(230, DbLsn.getNoCleaningDistance(a, b, 100));
118
119 long c = DbLsn.makeLsn(1, 50);
120 assertEquals(40, DbLsn.getNoCleaningDistance(a, c, 100));
121 assertEquals(40, DbLsn.getNoCleaningDistance(c, a, 100));
122 }
123
124 public void testSubtractWithCleaning()
125 throws Exception {
126
127
128
129 File envHome = new File (System.getProperty(TestUtils.DEST_DIR));
130 TestUtils.removeLogFiles("TestSubtract", envHome, false);
131 EnvironmentConfig envConfig = TestUtils.initEnvConfig();
132 envConfig.setAllowCreate(true);
133 Environment env = new Environment(envHome, envConfig);
134
135 try {
136 File file1 = new File (envHome, "00000001.jdb");
137 File file2 = new File (envHome, "00000003.jdb");
138 file1.createNewFile();
139 file2.createNewFile();
140 long a = DbLsn.makeLsn(1, 10);
141 long b = DbLsn.makeLsn(3, 40);
142 FileManager fileManager =
143 DbInternal.envGetEnvironmentImpl(env).getFileManager();
144 assertEquals(130, DbLsn.getWithCleaningDistance
145 (b, fileManager, a, 100));
146 assertEquals(130, DbLsn.getWithCleaningDistance
147 (a, fileManager, b, 100));
148
149 long c = DbLsn.makeLsn(1, 50);
150 assertEquals(40, DbLsn.getWithCleaningDistance
151 (a, fileManager, c, 100));
152 assertEquals(40, DbLsn.getWithCleaningDistance
153 (c, fileManager, a, 100));
154 } finally {
155 env.close();
156 }
157 }
158 }
159 |
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