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1
17
18
19
20 package org.apache.fop;
21
22 import java.io.IOException  ;
23 import java.io.StringReader ;
24 import java.security.NoSuchAlgorithmException ;
25
26 import javax.xml.parsers.ParserConfigurationException ;
27 import javax.xml.parsers.SAXParserFactory ;
28
29 import junit.framework.TestCase;
30
31 import org.apache.fop.util.DigestFilter;
32 import org.xml.sax.InputSource ;
33 import org.xml.sax.SAXException ;
34 import org.xml.sax.XMLReader ;
35
36
40 public class DigestFilterTestCase extends TestCase {
41
42 private SAXParserFactory parserFactory;
43
44
45 protected void setUp() {
46 parserFactory = SAXParserFactory.newInstance();
47 parserFactory.setNamespaceAware(true);
48 }
49
50 private boolean compareDigest(byte[] a, byte[] b) {
51 if (a.length != b.length) {
52 return false;
53 }
54 for (int i = 0; i < a.length; i++) {
55 if (a[i] != b[i]) {
56 return false;
57 }
58 }
59 return true;
60 }
61
62 private String digestToString(byte[] digest) {
63 StringBuffer buffer = new StringBuffer (2 * digest.length);
64 for (int i = 0; i < digest.length; i++) {
65 int val = digest[i];
66 int hi = (val >> 4) & 0xF;
67 int lo = val & 0xF;
68 if (hi < 10) {
69 buffer.append((char) (hi + 0x30));
70 } else {
71 buffer.append((char) (hi + 0x61 - 10));
72 }
73 if (lo < 10) {
74 buffer.append((char) (lo + 0x30));
75 } else {
76 buffer.append((char) (lo + 0x61 - 10));
77 }
78 }
79 return buffer.toString();
80 }
81
82 private byte[] runTest(String input)
83 throws
84 NoSuchAlgorithmException ,
85 ParserConfigurationException ,
86 SAXException ,
87 IOException {
88 XMLReader parser = parserFactory.newSAXParser().getXMLReader();
89 DigestFilter digestFilter = new DigestFilter("MD5");
90 digestFilter.setParent(parser);
91 digestFilter.setFeature("http://xml.org/sax/features/namespaces", true);
92 parser.setContentHandler(digestFilter);
93 InputSource inputSource = new InputSource (new StringReader (input));
94 parser.parse(inputSource);
95 return digestFilter.getDigestValue();
96 }
97
98 public final void testLineFeed()
99 throws
100 NoSuchAlgorithmException ,
101 ParserConfigurationException ,
102 SAXException ,
103 IOException {
104 byte[] lfDigest = runTest("<a>\n</a>");
105 byte[] crlfDigest = runTest("<a>\r\n</a>");
106 assertTrue(
107 "LF: "
108 + digestToString(lfDigest)
109 + " CRLF: "
110 + digestToString(crlfDigest),
111 compareDigest(lfDigest, crlfDigest));
112 }
113
114 public final void testAttributeOrder()
115 throws
116 NoSuchAlgorithmException ,
117 ParserConfigurationException ,
118 SAXException ,
119 IOException {
120 byte[] sortDigest = runTest("<a a1='1' a2='2' a3='3'/>");
121 byte[] permutationDigest = runTest("<a a2='2' a3='3' a1='1'/>");
122 assertTrue(
123 "Sort: "
124 + digestToString(sortDigest)
125 + " permuted: "
126 + digestToString(permutationDigest),
127 compareDigest(sortDigest, permutationDigest));
128 byte[] reverseDigest = runTest("<a a3='3' a2='2' a1='1'/>");
129 assertTrue(
130 "Sort: "
131 + digestToString(sortDigest)
132 + " permuted: "
133 + digestToString(reverseDigest),
134 compareDigest(sortDigest, reverseDigest));
135 }
136
137 public final void testNamespacePrefix()
138 throws
139 NoSuchAlgorithmException ,
140 ParserConfigurationException ,
141 SAXException ,
142 IOException {
143 byte[] prefix1Digest = runTest("<a:a xmlns:a='foo'/>");
144 byte[] prefix2Digest = runTest("<b:a xmlns:b='foo'/>");
145 assertTrue(
146 "prefix1: "
147 + digestToString(prefix1Digest)
148 + " prefix2: "
149 + digestToString(prefix2Digest),
150 compareDigest(prefix1Digest, prefix2Digest));
151 }
152
153 }
154 |
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