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
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
/*
* Copyright (C) 2012, 2021 GitHub Inc. and others
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.internal.storage.file;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertThrows;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.File;
import java.io.OutputStream;
import java.nio.charset.StandardCharsets;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.api.errors.JGitInternalException;
import org.eclipse.jgit.errors.LockFailedException;
import org.eclipse.jgit.junit.RepositoryTestCase;
import org.eclipse.jgit.revwalk.RevCommit;
import org.junit.Test;
/**
* Unit tests of {@link LockFile}
*/
public class LockFileTest extends RepositoryTestCase {
@Test
public void lockFailedExceptionRecovery() throws Exception {
try (Git git = new Git(db)) {
writeTrashFile("file.txt", "content");
git.add().addFilepattern("file.txt").call();
RevCommit commit1 = git.commit().setMessage("create file").call();
assertNotNull(commit1);
writeTrashFile("file.txt", "content2");
git.add().addFilepattern("file.txt").call();
assertNotNull(git.commit().setMessage("edit file").call());
LockFile lf = new LockFile(db.getIndexFile());
assertTrue(lf.lock());
try {
git.checkout().setName(commit1.name()).call();
fail("JGitInternalException not thrown");
} catch (JGitInternalException e) {
assertTrue(e.getCause() instanceof LockFailedException);
lf.unlock();
git.checkout().setName(commit1.name()).call();
}
}
}
@Test
public void testLockTwice() throws Exception {
File f = writeTrashFile("somefile", "content");
LockFile lock = new LockFile(f);
assertTrue(lock.lock());
lock.write("other".getBytes(StandardCharsets.US_ASCII));
lock.commit();
assertFalse(lock.isLocked());
checkFile(f, "other");
assertTrue(lock.lock());
assertTrue(lock.isLocked());
try (OutputStream out = lock.getOutputStream()) {
out.write("second".getBytes(StandardCharsets.US_ASCII));
}
lock.commit();
assertFalse(lock.isLocked());
checkFile(f, "second");
}
@Test
public void testLockTwiceUnlock() throws Exception {
File f = writeTrashFile("somefile", "content");
LockFile lock = new LockFile(f);
assertTrue(lock.lock());
assertTrue(lock.isLocked());
lock.write("other".getBytes(StandardCharsets.US_ASCII));
lock.unlock();
assertFalse(lock.isLocked());
checkFile(f, "content");
assertTrue(lock.lock());
assertTrue(lock.isLocked());
try (OutputStream out = lock.getOutputStream()) {
out.write("second".getBytes(StandardCharsets.US_ASCII));
}
lock.commit();
assertFalse(lock.isLocked());
checkFile(f, "second");
}
@Test
public void testLockWriteTwiceThrows1() throws Exception {
File f = writeTrashFile("somefile", "content");
LockFile lock = new LockFile(f);
assertTrue(lock.lock());
assertTrue(lock.isLocked());
lock.write("other".getBytes(StandardCharsets.US_ASCII));
assertThrows(Exception.class,
() -> lock.write("second".getBytes(StandardCharsets.US_ASCII)));
lock.unlock();
}
@Test
public void testLockWriteTwiceThrows2() throws Exception {
File f = writeTrashFile("somefile", "content");
LockFile lock = new LockFile(f);
assertTrue(lock.lock());
assertTrue(lock.isLocked());
try (OutputStream out = lock.getOutputStream()) {
out.write("other".getBytes(StandardCharsets.US_ASCII));
}
assertThrows(Exception.class,
() -> lock.write("second".getBytes(StandardCharsets.US_ASCII)));
lock.unlock();
}
@Test
public void testLockWriteTwiceThrows3() throws Exception {
File f = writeTrashFile("somefile", "content");
LockFile lock = new LockFile(f);
assertTrue(lock.lock());
assertTrue(lock.isLocked());
lock.write("other".getBytes(StandardCharsets.US_ASCII));
assertThrows(Exception.class, () -> {
try (OutputStream out = lock.getOutputStream()) {
out.write("second".getBytes(StandardCharsets.US_ASCII));
}
});
lock.unlock();
}
@Test
public void testLockWriteTwiceThrows4() throws Exception {
File f = writeTrashFile("somefile", "content");
LockFile lock = new LockFile(f);
assertTrue(lock.lock());
assertTrue(lock.isLocked());
try (OutputStream out = lock.getOutputStream()) {
out.write("other".getBytes(StandardCharsets.US_ASCII));
}
assertThrows(Exception.class, () -> {
try (OutputStream out = lock.getOutputStream()) {
out.write("second".getBytes(StandardCharsets.US_ASCII));
}
});
lock.unlock();
}
@Test
public void testLockUnclosedCommitThrows() throws Exception {
File f = writeTrashFile("somefile", "content");
LockFile lock = new LockFile(f);
assertTrue(lock.lock());
assertTrue(lock.isLocked());
try (OutputStream out = lock.getOutputStream()) {
out.write("other".getBytes(StandardCharsets.US_ASCII));
assertThrows(Exception.class, () -> lock.commit());
}
}
@Test
public void testLockNested() throws Exception {
File f = writeTrashFile("somefile", "content");
LockFile lock = new LockFile(f);
assertTrue(lock.lock());
assertTrue(lock.isLocked());
assertThrows(IllegalStateException.class, () -> lock.lock());
assertTrue(lock.isLocked());
lock.unlock();
}
@Test
public void testLockHeld() throws Exception {
File f = writeTrashFile("somefile", "content");
LockFile lock = new LockFile(f);
assertTrue(lock.lock());
assertTrue(lock.isLocked());
LockFile lock2 = new LockFile(f);
assertFalse(lock2.lock());
assertFalse(lock2.isLocked());
assertTrue(lock.isLocked());
lock.unlock();
}
@Test
public void testLockForAppend() throws Exception {
File f = writeTrashFile("somefile", "content");
LockFile lock = new LockFile(f);
assertTrue(lock.lockForAppend());
assertTrue(lock.isLocked());
lock.write("other".getBytes(StandardCharsets.US_ASCII));
lock.commit();
assertFalse(lock.isLocked());
checkFile(f, "contentother");
}
@Test
public void testUnlockNoop() throws Exception {
File f = writeTrashFile("somefile", "content");
try {
LockFile lock = new LockFile(f);
lock.unlock();
lock.unlock();
} catch (Throwable e) {
throw new AssertionError(
"unlock should be noop if not locked at all.", e);
}
}
}
|
