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Java > Open Source Codes > org > apache > tools > ant > util > regexp > RegexpMatcherTest


1 /*
2  * Copyright 2000-2004 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.ant.util.regexp;
19
20 import java.io.*;
21 import java.util.Vector JavaDoc;
22
23 import junit.framework.Test;
24 import junit.framework.TestCase;
25 import junit.framework.TestSuite;
26
27 /**
28  * Tests for all implementations of the RegexpMatcher interface.
29  *
30  */

31 public abstract class RegexpMatcherTest extends TestCase {
32
33     public final static String JavaDoc UNIX_LINE = "\n";
34
35     private RegexpMatcher reg;
36
37     public abstract RegexpMatcher getImplementation();
38
39     protected final RegexpMatcher getReg() {return reg;}
40
41     public RegexpMatcherTest(String JavaDoc name) {
42         super(name);
43     }
44
45     public void setUp() {
46         reg = getImplementation();
47     }
48
49     public void testMatches() {
50         reg.setPattern("aaaa");
51         assertTrue("aaaa should match itself", reg.matches("aaaa"));
52         assertTrue("aaaa should match xaaaa", reg.matches("xaaaa"));
53         assertTrue("aaaa shouldn\'t match xaaa", !reg.matches("xaaa"));
54         reg.setPattern("^aaaa");
55         assertTrue("^aaaa shouldn\'t match xaaaa", !reg.matches("xaaaa"));
56         assertTrue("^aaaa should match aaaax", reg.matches("aaaax"));
57         reg.setPattern("aaaa$");
58         assertTrue("aaaa$ shouldn\'t match aaaax", !reg.matches("aaaax"));
59         assertTrue("aaaa$ should match xaaaa", reg.matches("xaaaa"));
60         reg.setPattern("[0-9]+");
61         assertTrue("[0-9]+ should match 123", reg.matches("123"));
62         assertTrue("[0-9]+ should match 1", reg.matches("1"));
63         assertTrue("[0-9]+ shouldn\'t match \'\'", !reg.matches(""));
64         assertTrue("[0-9]+ shouldn\'t match a", !reg.matches("a"));
65         reg.setPattern("[0-9]*");
66         assertTrue("[0-9]* should match 123", reg.matches("123"));
67         assertTrue("[0-9]* should match 1", reg.matches("1"));
68         assertTrue("[0-9]* should match \'\'", reg.matches(""));
69         assertTrue("[0-9]* should match a", reg.matches("a"));
70         reg.setPattern("([0-9]+)=\\1");
71         assertTrue("([0-9]+)=\\1 should match 1=1", reg.matches("1=1"));
72         assertTrue("([0-9]+)=\\1 shouldn\'t match 1=2", !reg.matches("1=2"));
73     }
74
75     public void testGroups() {
76         reg.setPattern("aaaa");
77         Vector JavaDoc v = reg.getGroups("xaaaa");
78         assertEquals("No parens -> no extra groups", 1, v.size());
79         assertEquals("Trivial match with no parens", "aaaa",
80                      (String JavaDoc) v.elementAt(0));
81
82         reg.setPattern("(aaaa)");
83         v = reg.getGroups("xaaaa");
84         assertEquals("Trivial match with single paren", 2, v.size());
85         assertEquals("Trivial match with single paren, full match", "aaaa",
86                      (String JavaDoc) v.elementAt(0));
87         assertEquals("Trivial match with single paren, matched paren", "aaaa",
88                      (String JavaDoc) v.elementAt(0));
89
90         reg.setPattern("(a+)b(b+)");
91         v = reg.getGroups("xaabb");
92         assertEquals(3, v.size());
93         assertEquals("aabb", (String JavaDoc) v.elementAt(0));
94         assertEquals("aa", (String JavaDoc) v.elementAt(1));
95         assertEquals("b", (String JavaDoc) v.elementAt(2));
96     }
97
98     public void testBugzillaReport14619() {
99         reg.setPattern("^(.*)/src/((.*/)*)([a-zA-Z0-9_\\.]+)\\.java$");
100         Vector JavaDoc v = reg.getGroups("de/tom/src/Google.java");
101         assertEquals(5, v.size());
102         assertEquals("de/tom", v.elementAt(1));
103         assertEquals("", v.elementAt(2));
104         assertEquals("", v.elementAt(3));
105         assertEquals("Google", v.elementAt(4));
106     }
107
108     public void testCaseInsensitiveMatch() {
109         reg.setPattern("aaaa");
110         assertTrue("aaaa doesn't match AAaa", !reg.matches("AAaa"));
111         assertTrue("aaaa matches AAaa ignoring case",
112                    reg.matches("AAaa", RegexpMatcher.MATCH_CASE_INSENSITIVE));
113     }
114
115
116 // make sure there are no issues concerning line separator interpretation
117
// a line separator for regex (perl) is always a unix line (ie \n)
118

119     public void testParagraphCharacter() throws IOException {
120         reg.setPattern("end of text$");
121         assertTrue("paragraph character", !reg.matches("end of text\u2029"));
122     }
123
124     public void testLineSeparatorCharacter() throws IOException {
125         reg.setPattern("end of text$");
126         assertTrue("line-separator character", !reg.matches("end of text\u2028"));
127     }
128
129     public void testNextLineCharacter() throws IOException {
130         reg.setPattern("end of text$");
131         assertTrue("next-line character", !reg.matches("end of text\u0085"));
132     }
133
134     public void testStandaloneCR() throws IOException {
135         reg.setPattern("end of text$");
136         assertTrue("standalone CR", !reg.matches("end of text\r"));
137     }
138
139     public void testWindowsLineSeparator() throws IOException {
140         reg.setPattern("end of text$");
141         assertTrue("Windows line separator", !reg.matches("end of text\r\n"));
142     }
143
144     public void testWindowsLineSeparator2() throws IOException {
145         reg.setPattern("end of text\r$");
146         assertTrue("Windows line separator", reg.matches("end of text\r\n"));
147     }
148
149     public void testUnixLineSeparator() throws IOException {
150         reg.setPattern("end of text$");
151         assertTrue("Unix line separator", reg.matches("end of text\n"));
152     }
153
154
155     public void testMultiVersusSingleLine() throws IOException {
156         StringBuffer JavaDoc buf = new StringBuffer JavaDoc();
157         buf.append("Line1").append(UNIX_LINE);
158         buf.append("starttest Line2").append(UNIX_LINE);
159         buf.append("Line3 endtest").append(UNIX_LINE);
160         buf.append("Line4").append(UNIX_LINE);
161         String JavaDoc text = buf.toString();
162
163         doStartTest1(text);
164         doStartTest2(text);
165         doEndTest1(text);
166         doEndTest2(text);
167     }
168
169     protected void doStartTest1(String JavaDoc text) {
170         reg.setPattern("^starttest");
171         assertTrue("^starttest in default mode", !reg.matches(text));
172         assertTrue("^starttest in single line mode",
173                !reg.matches(text, RegexpMatcher.MATCH_SINGLELINE));
174         assertTrue("^starttest in multi line mode",
175                reg.matches(text, RegexpMatcher.MATCH_MULTILINE));
176     }
177
178     protected void doStartTest2(String JavaDoc text) {
179         reg.setPattern("^Line1");
180         assertTrue("^Line1 in default mode", reg.matches(text));
181         assertTrue("^Line1 in single line mode",
182                reg.matches(text, RegexpMatcher.MATCH_SINGLELINE));
183         assertTrue("^Line1 in multi line mode",
184                reg.matches(text, RegexpMatcher.MATCH_MULTILINE));
185     }
186
187     protected void doEndTest1(String JavaDoc text) {
188         reg.setPattern("endtest$");
189         assertTrue("endtest$ in default mode", !reg.matches(text));
190         assertTrue("endtest$ in single line mode",
191                !reg.matches(text, RegexpMatcher.MATCH_SINGLELINE));
192         assertTrue("endtest$ in multi line mode",
193                reg.matches(text, RegexpMatcher.MATCH_MULTILINE));
194     }
195
196     protected void doEndTest2(String JavaDoc text) {
197         reg.setPattern("Line4$");
198         assertTrue("Line4$ in default mode", reg.matches(text));
199         assertTrue("Line4$ in single line mode",
200                reg.matches(text, RegexpMatcher.MATCH_SINGLELINE));
201         assertTrue("Line4$ in multi line mode",
202                reg.matches(text, RegexpMatcher.MATCH_MULTILINE));
203     }
204
205 }
206
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