KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > apache > tools > zip > ExtraFieldUtilsTest


1 /*
2  * Copyright 2001,2004 The Apache Software Foundation
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  *
16  */
17
18 package org.apache.tools.zip;
19
20 import junit.framework.TestCase;
21
22 /**
23  * JUnit 3 testcases for org.apache.tools.zip.ExtraFieldUtils.
24  *
25  */
26 public class ExtraFieldUtilsTest extends TestCase implements UnixStat {
27     public ExtraFieldUtilsTest(String JavaDoc name) {
28         super(name);
29     }
30
31     private AsiExtraField a;
32     private UnrecognizedExtraField dummy;
33     private byte[] data;
34     private byte[] aLocal;
35
36     public void setUp() {
37         a = new AsiExtraField();
38         a.setMode(0755);
39         a.setDirectory(true);
40         dummy = new UnrecognizedExtraField();
41         dummy.setHeaderId(new ZipShort(1));
42         dummy.setLocalFileDataData(new byte[0]);
43         dummy.setCentralDirectoryData(new byte[] {0});
44
45         aLocal = a.getLocalFileDataData();
46         byte[] dummyLocal = dummy.getLocalFileDataData();
47         data = new byte[4 + aLocal.length + 4 + dummyLocal.length];
48         System.arraycopy(a.getHeaderId().getBytes(), 0, data, 0, 2);
49         System.arraycopy(a.getLocalFileDataLength().getBytes(), 0, data, 2, 2);
50         System.arraycopy(aLocal, 0, data, 4, aLocal.length);
51         System.arraycopy(dummy.getHeaderId().getBytes(), 0, data,
52                          4+aLocal.length, 2);
53         System.arraycopy(dummy.getLocalFileDataLength().getBytes(), 0, data,
54                          4+aLocal.length+2, 2);
55         System.arraycopy(dummyLocal, 0, data,
56                          4+aLocal.length+4, dummyLocal.length);
57
58     }
59
60     /**
61      * test parser.
62      */
63     public void testParse() throws Exception JavaDoc {
64         ZipExtraField[] ze = ExtraFieldUtils.parse(data);
65         assertEquals("number of fields", 2, ze.length);
66         assertTrue("type field 1", ze[0] instanceof AsiExtraField);
67         assertEquals("mode field 1", 040755,
68                      ((AsiExtraField) ze[0]).getMode());
69         assertTrue("type field 2", ze[1] instanceof UnrecognizedExtraField);
70         assertEquals("data length field 2", 0,
71                      ze[1].getLocalFileDataLength().getValue());
72
73         byte[] data2 = new byte[data.length-1];
74         System.arraycopy(data, 0, data2, 0, data2.length);
75         try {
76             ExtraFieldUtils.parse(data2);
77             fail("data should be invalid");
78         } catch (Exception JavaDoc e) {
79             assertEquals("message",
80                          "data starting at "+(4+aLocal.length)+" is in unknown format",
81                          e.getMessage());
82         }
83     }
84
85     /**
86      * Test merge methods
87      */
88     public void testMerge() {
89         byte[] local =
90             ExtraFieldUtils.mergeLocalFileDataData(new ZipExtraField[] {a, dummy});
91         assertEquals("local length", data.length, local.length);
92         for (int i=0; i<local.length; i++) {
93             assertEquals("local byte "+i, data[i], local[i]);
94         }
95
96         byte[] dummyCentral = dummy.getCentralDirectoryData();
97         byte[] data2 = new byte[4 + aLocal.length + 4 + dummyCentral.length];
98         System.arraycopy(data, 0, data2, 0, 4 + aLocal.length + 2);
99         System.arraycopy(dummy.getCentralDirectoryLength().getBytes(), 0,
100                          data2, 4+aLocal.length+2, 2);
101         System.arraycopy(dummyCentral, 0, data2,
102                          4+aLocal.length+4, dummyCentral.length);
103
104
105         byte[] central =
106             ExtraFieldUtils.mergeCentralDirectoryData(new ZipExtraField[] {a, dummy});
107         assertEquals("central length", data2.length, central.length);
108         for (int i=0; i<central.length; i++) {
109             assertEquals("central byte "+i, data2[i], central[i]);
110         }
111
112     }
113 }
114
Popular Tags