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
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
|
/*
* Copyright (C) 2010, Google 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.lib;
import static org.eclipse.jgit.lib.Constants.OBJ_BLOB;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Arrays;
import org.eclipse.jgit.errors.LargeObjectException;
import org.eclipse.jgit.errors.MissingObjectException;
import org.eclipse.jgit.junit.JGitTestUtil;
import org.eclipse.jgit.junit.TestRng;
import org.junit.Test;
public class ObjectLoaderTest {
private TestRng rng;
private TestRng getRng() {
if (rng == null)
rng = new TestRng(JGitTestUtil.getName());
return rng;
}
@Test
public void testSmallObjectLoader() throws MissingObjectException,
IOException {
final byte[] act = getRng().nextBytes(512);
final ObjectLoader ldr = new ObjectLoader.SmallObject(OBJ_BLOB, act);
assertEquals(OBJ_BLOB, ldr.getType());
assertEquals(act.length, ldr.getSize());
assertFalse("not is large", ldr.isLarge());
assertSame(act, ldr.getCachedBytes());
assertSame(act, ldr.getCachedBytes(1));
assertSame(act, ldr.getCachedBytes(Integer.MAX_VALUE));
byte[] copy = ldr.getBytes();
assertNotSame(act, copy);
assertTrue("same content", Arrays.equals(act, copy));
copy = ldr.getBytes(1);
assertNotSame(act, copy);
assertTrue("same content", Arrays.equals(act, copy));
copy = ldr.getBytes(Integer.MAX_VALUE);
assertNotSame(act, copy);
assertTrue("same content", Arrays.equals(act, copy));
ObjectStream in = ldr.openStream();
assertNotNull("has stream", in);
assertTrue("is small stream", in instanceof ObjectStream.SmallStream);
assertEquals(OBJ_BLOB, in.getType());
assertEquals(act.length, in.getSize());
assertEquals(act.length, in.available());
assertTrue("mark supported", in.markSupported());
copy = new byte[act.length];
assertEquals(act.length, in.read(copy));
assertEquals(0, in.available());
assertEquals(-1, in.read());
assertTrue("same content", Arrays.equals(act, copy));
ByteArrayOutputStream tmp = new ByteArrayOutputStream();
ldr.copyTo(tmp);
assertTrue("same content", Arrays.equals(act, tmp.toByteArray()));
}
@Test
public void testLargeObjectLoader() throws MissingObjectException,
IOException {
final byte[] act = getRng().nextBytes(512);
final ObjectLoader ldr = new ObjectLoader() {
@Override
public byte[] getCachedBytes() throws LargeObjectException {
throw new LargeObjectException();
}
@Override
public long getSize() {
return act.length;
}
@Override
public int getType() {
return OBJ_BLOB;
}
@Override
public ObjectStream openStream() throws MissingObjectException,
IOException {
return new ObjectStream.Filter(getType(), act.length,
new ByteArrayInputStream(act));
}
};
assertEquals(OBJ_BLOB, ldr.getType());
assertEquals(act.length, ldr.getSize());
assertTrue("is large", ldr.isLarge());
try {
ldr.getCachedBytes();
fail("did not throw on getCachedBytes()");
} catch (LargeObjectException tooBig) {
// expected
}
try {
ldr.getBytes();
fail("did not throw on getBytes()");
} catch (LargeObjectException tooBig) {
// expected
}
try {
ldr.getCachedBytes(64);
fail("did not throw on getCachedBytes(64)");
} catch (LargeObjectException tooBig) {
// expected
}
byte[] copy = ldr.getCachedBytes(1024);
assertNotSame(act, copy);
assertTrue("same content", Arrays.equals(act, copy));
ObjectStream in = ldr.openStream();
assertNotNull("has stream", in);
assertEquals(OBJ_BLOB, in.getType());
assertEquals(act.length, in.getSize());
assertEquals(act.length, in.available());
assertTrue("mark supported", in.markSupported());
copy = new byte[act.length];
assertEquals(act.length, in.read(copy));
assertEquals(0, in.available());
assertEquals(-1, in.read());
assertTrue("same content", Arrays.equals(act, copy));
ByteArrayOutputStream tmp = new ByteArrayOutputStream();
ldr.copyTo(tmp);
assertTrue("same content", Arrays.equals(act, tmp.toByteArray()));
}
@Test
public void testLimitedGetCachedBytes() throws LargeObjectException,
MissingObjectException, IOException {
byte[] act = getRng().nextBytes(512);
ObjectLoader ldr = new ObjectLoader.SmallObject(OBJ_BLOB, act) {
@Override
public boolean isLarge() {
return true;
}
};
assertTrue("is large", ldr.isLarge());
try {
ldr.getCachedBytes(10);
fail("Did not throw LargeObjectException");
} catch (LargeObjectException tooBig) {
// Expected result.
}
byte[] copy = ldr.getCachedBytes(512);
assertNotSame(act, copy);
assertTrue("same content", Arrays.equals(act, copy));
copy = ldr.getCachedBytes(1024);
assertNotSame(act, copy);
assertTrue("same content", Arrays.equals(act, copy));
}
@Test
public void testLimitedGetCachedBytesExceedsJavaLimits()
throws LargeObjectException, MissingObjectException, IOException {
ObjectLoader ldr = new ObjectLoader() {
@Override
public boolean isLarge() {
return true;
}
@Override
public byte[] getCachedBytes() throws LargeObjectException {
throw new LargeObjectException();
}
@Override
public long getSize() {
return Long.MAX_VALUE;
}
@Override
public int getType() {
return OBJ_BLOB;
}
@Override
public ObjectStream openStream() throws MissingObjectException,
IOException {
return new ObjectStream() {
@Override
public long getSize() {
return Long.MAX_VALUE;
}
@Override
public int getType() {
return OBJ_BLOB;
}
@Override
public int read() throws IOException {
fail("never should have reached read");
return -1;
}
@Override
public int read(byte b[], int off, int len) {
fail("never should have reached read");
return -1;
}
};
}
};
assertTrue("is large", ldr.isLarge());
try {
ldr.getCachedBytes(10);
fail("Did not throw LargeObjectException");
} catch (LargeObjectException tooBig) {
// Expected result.
}
try {
ldr.getCachedBytes(Integer.MAX_VALUE);
fail("Did not throw LargeObjectException");
} catch (LargeObjectException tooBig) {
// Expected result.
}
}
}
|
