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
|
// Copyright 2015 The Bazel Authors. All rights reserved.
//
// Licensed 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 com.google.devtools.build.android.ziputils;
import static com.google.devtools.build.android.ziputils.LocalFileHeader.LOCCRC;
import static com.google.devtools.build.android.ziputils.LocalFileHeader.LOCFLG;
import static com.google.devtools.build.android.ziputils.LocalFileHeader.LOCHOW;
import static com.google.devtools.build.android.ziputils.LocalFileHeader.LOCLEN;
import static com.google.devtools.build.android.ziputils.LocalFileHeader.LOCSIG;
import static com.google.devtools.build.android.ziputils.LocalFileHeader.LOCSIZ;
import static com.google.devtools.build.android.ziputils.LocalFileHeader.LOCTIM;
import static com.google.devtools.build.android.ziputils.LocalFileHeader.LOCVER;
import static java.nio.charset.StandardCharsets.UTF_8;
import static org.junit.Assert.assertEquals;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.zip.ZipInputStream;
/**
* Unit tests for {@link LocalFileHeader}.
*/
@RunWith(JUnit4.class)
public class LocalFileHeaderTest {
@Test
public void testViewOf() {
ByteBuffer buffer = ByteBuffer.allocate(100).order(ByteOrder.LITTLE_ENDIAN);
for (int i = 0; i < 100; i++) {
buffer.put((byte) i);
}
int offset = 20;
int filenameLength = 10;
int extraLength = 25;
int marker = LocalFileHeader.SIGNATURE;
buffer.putShort(offset + ZipInputStream.LOCNAM, (short) filenameLength); // filename length
buffer.putShort(offset + ZipInputStream.LOCEXT, (short) extraLength); // extra data length
buffer.putInt(offset, marker); // need to zero filename length to have predictable size
buffer.position(offset);
LocalFileHeader view = LocalFileHeader.viewOf(buffer);
int expMark = (int) ZipInputStream.LOCSIG;
int expSize = ZipInputStream.LOCHDR + filenameLength + extraLength; // fixed + comment
int expPos = 0;
assertEquals("not based at current position", expMark, view.get(LOCSIG));
assertEquals("Not slice with position 0", expPos, view.buffer.position());
assertEquals("Not sized with comment", expSize, view.getSize());
assertEquals("Not limited to size", expSize, view.buffer.limit());
}
@Test
public void testView_String_byteArr() {
String filename = "pkg/foo.class";
byte[] extraData = { 1, 2, 3, 4, 5, 6, 7, 8};
int expSize = ZipInputStream.LOCHDR + filename.getBytes(UTF_8).length
+ extraData.length;
int expPos = 0;
LocalFileHeader view = LocalFileHeader.allocate(filename, extraData);
assertEquals("Incorrect filename", filename, view.getFilename());
Assert.assertArrayEquals("Incorrect extra data", extraData, view.getExtraData());
assertEquals("Not at position 0", expPos, view.buffer.position());
assertEquals("Not sized correctly", expSize, view.getSize());
assertEquals("Not limited to size", expSize, view.buffer.limit());
}
@Test
public void testView_3Args() {
ByteBuffer buffer = ByteBuffer.allocate(100).order(ByteOrder.LITTLE_ENDIAN);
for (int i = 0; i < 100; i++) {
buffer.put((byte) i);
}
int offset = 20;
buffer.position(offset);
String filename = "pkg/foo.class";
int expMark = LocalFileHeader.SIGNATURE;
int expSize = ZipInputStream.LOCHDR + filename.getBytes(UTF_8).length;
int expPos = 0;
LocalFileHeader view = LocalFileHeader.view(buffer, filename, null);
assertEquals("not based at current position", expMark, view.get(LOCSIG));
assertEquals("Not slice with position 0", expPos, view.buffer.position());
assertEquals("Not sized with filename", expSize, view.getSize());
assertEquals("Not limited to size", expSize, view.buffer.limit());
assertEquals("Incorrect filename", filename, view.getFilename());
}
@Test
public void testCopy() {
ByteBuffer buffer = ByteBuffer.allocate(100).order(ByteOrder.LITTLE_ENDIAN);
LocalFileHeader view = LocalFileHeader.allocate("pkg/foo.class", null);
view.copy(buffer);
int expSize = view.getSize();
assertEquals("buffer not advanced as expected", expSize, buffer.position());
buffer.position(0);
LocalFileHeader clone = LocalFileHeader.viewOf(buffer);
assertEquals("Fail to copy mark", view.get(LOCSIG), view.get(LOCSIG));
assertEquals("Fail to copy comment", view.getFilename(), clone.getFilename());
}
@Test
public void testWithAndGetMethods() {
int crc = 0x12345678;
int compressed = 0x357f1d5;
int uncompressed = 0x74813159;
short flags = 0x7a61;
short method = 0x3b29;
int time = 0x12c673e1;
short version = 0x1234;
LocalFileHeader view = LocalFileHeader.allocate("pkg/foo.class", null)
.set(LOCCRC, crc)
.set(LOCSIZ, compressed)
.set(LOCLEN, uncompressed)
.set(LOCFLG, flags)
.set(LOCHOW, method)
.set(LOCTIM, time)
.set(LOCVER, version);
assertEquals("CRC", crc, view.get(LOCCRC));
assertEquals("Compressed size", compressed, view.get(LOCSIZ));
assertEquals("Uncompressed size", uncompressed, view.get(LOCLEN));
assertEquals("Flags", flags, view.get(LOCFLG));
assertEquals("Method", method, view.get(LOCHOW));
assertEquals("Modified time", time, view.get(LOCTIM));
assertEquals("Version needed", version, view.get(LOCVER));
}
}
|
