1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.juli;
import java.lang.reflect.Field;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;
import org.junit.Assert;
import org.junit.Test;
public class TestDateFormatCache {
// Note that there is a similar test:
// org.apache.catalina.valves.TestAccessLogValve.testBug54044()
@Test
public void testBug54044() throws Exception {
final String timeFormat = "dd-MMM-yyyy HH:mm:ss";
final int cacheSize = 10;
SimpleDateFormat sdf = new SimpleDateFormat(timeFormat, Locale.US);
sdf.setTimeZone(TimeZone.getDefault());
DateFormatCache dfc = new DateFormatCache(cacheSize, timeFormat, null);
// Get dfc.cache.cache field
Object dfcCache;
Field dfcCacheArray;
Field dfcCacheField = dfc.getClass().getDeclaredField("cache");
dfcCacheField.setAccessible(true);
dfcCache = dfcCacheField.get(dfc);
dfcCacheArray = dfcCache.getClass().getDeclaredField("cache");
dfcCacheArray.setAccessible(true);
// Create an array to hold the expected values
String[] expected = new String[cacheSize];
// Fill the cache & populate the expected values
for (int secs = 0; secs < (cacheSize); secs++) {
dfc.getFormat(secs * 1000);
expected[secs] = generateExpected(sdf, secs);
}
Assert.assertArrayEquals(expected,
(String[]) dfcCacheArray.get(dfcCache));
// Cause the cache to roll-around by one and then confirm
dfc.getFormat(cacheSize * 1000);
expected[0] = generateExpected(sdf, cacheSize);
Assert.assertArrayEquals(expected,
(String[]) dfcCacheArray.get(dfcCache));
// Jump 2 ahead and then confirm (skipped value should be null)
dfc.getFormat((cacheSize + 2) * 1000);
expected[1] = null;
expected[2] = generateExpected(sdf, cacheSize + 2);
Assert.assertArrayEquals(expected,
(String[]) dfcCacheArray.get(dfcCache));
// Back 1 to fill in the gap
dfc.getFormat((cacheSize + 1) * 1000);
expected[1] = generateExpected(sdf, cacheSize + 1);
Assert.assertArrayEquals(expected,
(String[]) dfcCacheArray.get(dfcCache));
// Return to 1 and confirm skipped value is null
dfc.getFormat(1 * 1000);
expected[1] = generateExpected(sdf, 1);
expected[2] = null;
Assert.assertArrayEquals(expected,
(String[]) dfcCacheArray.get(dfcCache));
// Go back one further
dfc.getFormat(0);
expected[0] = generateExpected(sdf, 0);
Assert.assertArrayEquals(expected,
(String[]) dfcCacheArray.get(dfcCache));
// Jump ahead far enough that the entire cache will need to be cleared
dfc.getFormat(42 * 1000);
for (int i = 0; i < cacheSize; i++) {
expected[i] = null;
}
expected[0] = generateExpected(sdf, 42);
Assert.assertArrayEquals(expected,
(String[]) dfcCacheArray.get(dfcCache));
}
private String generateExpected(SimpleDateFormat sdf, long secs) {
return sdf.format(new Date(secs * 1000));
}
}
|
