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1
8
9 package com.sleepycat.util.test;
10
11 import com.sleepycat.util.PackedInteger;
12 import junit.framework.Test;
13 import junit.framework.TestCase;
14
15 public class PackedIntegerTest extends TestCase
16 {
17 static final int V119 = 119;
18 static final int BYTE_MAX = 0xFF;
19 static final int SHORT_MAX = 0xFFFF;
20 static final int THREE_MAX = 0xFFFFFF;
21
22 public static void main(String  [] args)
23 throws Exception {
24
25 junit.framework.TestResult tr =
26 junit.textui.TestRunner.run(suite());
27 if (tr.errorCount() > 0 ||
28 tr.failureCount() > 0) {
29 System.exit(1);
30 } else {
31 System.exit(0);
32 }
33 }
34
35 public static Test suite() {
36
37 return new PackedIntegerTest();
38 }
39
40 public PackedIntegerTest() {
41
42 super("PackedIntegerTest");
43 }
44
45 public void runTest() {
46
47 testRange(-V119, V119, 1);
48
49 testRange(-BYTE_MAX - V119, -1 - V119, 2);
50 testRange(1 + V119, BYTE_MAX + V119, 2);
51
52 testRange(-SHORT_MAX - V119, -SHORT_MAX + 99, 3);
53 testRange(-BYTE_MAX - V119 - 99, -BYTE_MAX - V119 - 1, 3);
54 testRange(BYTE_MAX + V119 + 1, BYTE_MAX + V119 + 99, 3);
55 testRange(SHORT_MAX - 99, SHORT_MAX + V119, 3);
56
57 testRange(-THREE_MAX - V119, -THREE_MAX + 99, 4);
58 testRange(-SHORT_MAX - V119 - 99, -SHORT_MAX - V119 - 1, 4);
59 testRange(SHORT_MAX + V119 + 1, SHORT_MAX + V119 + 99, 4);
60 testRange(THREE_MAX - 99, THREE_MAX + V119, 4);
61
62 testRange(Integer.MIN_VALUE, Integer.MIN_VALUE + 99, 5);
63 testRange(Integer.MAX_VALUE - 99, Integer.MAX_VALUE, 5);
64 }
65
66 private void testRange(long firstValue,
67 long lastValue,
68 int bytesExpected) {
69
70 byte[] buf = new byte[1000];
71 int off = 0;
72
73 for (long longI = firstValue; longI <= lastValue; longI += 1) {
74 int i = (int) longI;
75 int before = off;
76 off = PackedInteger.writeInt(buf, off, i);
77 int bytes = off - before;
78 if (bytes != bytesExpected) {
79 fail("output of value=" + i + " bytes=" + bytes +
80 " bytesExpected=" + bytesExpected);
81 }
82 bytes = PackedInteger.getWriteIntLength(i);
83 if (bytes != bytesExpected) {
84 fail("count of value=" + i + " bytes=" + bytes +
85 " bytesExpected=" + bytesExpected);
86 }
87 }
88
89 off = 0;
90
91 for (long longI = firstValue; longI <= lastValue; longI += 1) {
92 int i = (int) longI;
93 int bytes = PackedInteger.getReadIntLength(buf, off);
94 if (bytes != bytesExpected) {
95 fail("count of value=" + i + " bytes=" + bytes +
96 " bytesExpected=" + bytesExpected);
97 }
98 int value = PackedInteger.readInt(buf, off);
99 if (value != i) {
100 fail("input of value=" + i + " but got=" + value);
101 }
102 off += bytes;
103 }
104 }
105 }
106 |
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