KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > codehaus > groovy > antlr > SourceBufferTest


1 /*
2  $Id: SourceBufferTest.java,v 1.1 2005/06/04 09:39:18 jez Exp $
3
4  Copyright 2005 (C) Jeremy Rayner. All Rights Reserved.
5
6  Redistribution and use of this software and associated documentation
7  ("Software"), with or without modification, are permitted provided
8  that the following conditions are met:
9
10  1. Redistributions of source code must retain copyright
11     statements and notices. Redistributions must also contain a
12     copy of this document.
13
14  2. Redistributions in binary form must reproduce the
15     above copyright notice, this list of conditions and the
16     following disclaimer in the documentation and/or other
17     materials provided with the distribution.
18
19  3. The name "groovy" must not be used to endorse or promote
20     products derived from this Software without prior written
21     permission of The Codehaus. For written permission,
22     please contact info@codehaus.org.
23
24  4. Products derived from this Software may not be called "groovy"
25     nor may "groovy" appear in their names without prior written
26     permission of The Codehaus. "groovy" is a registered
27     trademark of The Codehaus.
28
29  5. Due credit should be given to The Codehaus -
30     http://groovy.codehaus.org/
31
32  THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
33  ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
34  NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
35  FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
36  THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
37  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
38  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
39  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
40  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
41  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
42  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
43  OF THE POSSIBILITY OF SUCH DAMAGE.
44
45  */
46
47 package org.codehaus.groovy.antlr;
48
49 import groovy.util.GroovyTestCase;
50
51 import java.io.Reader JavaDoc;
52 import java.io.StringReader JavaDoc;
53
54 /**
55  *
56  * @author <a HREF="mailto:groovy@ross-rayner.com">Jeremy Rayner</a>
57  * @version $Revision: 1.1 $
58  */
59 public class SourceBufferTest extends GroovyTestCase {
60
61     public void testEmptyBuffer() throws Exception JavaDoc {
62         SourceBuffer buffer = getSourceBuffer("");
63         assertNull(buffer.getSnippet(new LineColumn(1,1),new LineColumn(1,1)));
64     }
65
66     public void testSimpleUsage() throws Exception JavaDoc {
67         SourceBuffer buffer = getSourceBuffer("println 'hello world'");
68         assertEquals("hello",buffer.getSnippet(new LineColumn(1,10),new LineColumn(1,15)));
69     }
70
71     public void testUnixLineUsage() throws Exception JavaDoc {
72         String JavaDoc endOfLine = "\n";
73         StringBuffer JavaDoc src = new StringBuffer JavaDoc();
74         src.append("println 'hello world'").append(endOfLine);
75         src.append("println 'oh not, not that again'").append(endOfLine);
76         SourceBuffer buffer = getSourceBuffer(src.toString());
77         assertEquals("hello",buffer.getSnippet(new LineColumn(1,10),new LineColumn(1,15)));
78         assertEquals("world'" + endOfLine + "print",buffer.getSnippet(new LineColumn(1,16),new LineColumn(2,6)));
79         assertEquals(endOfLine,buffer.getSnippet(new LineColumn(1,22),new LineColumn(1,23)));
80         assertEquals(endOfLine,buffer.getSnippet(new LineColumn(2,33),new LineColumn(2,34)));
81     }
82
83     public void testDOSLineUsage() throws Exception JavaDoc {
84         String JavaDoc endOfLine = "\r\n";
85         StringBuffer JavaDoc src = new StringBuffer JavaDoc();
86         src.append("println 'hello world'").append(endOfLine);
87         src.append("println 'oh not, not that again'").append(endOfLine);
88         SourceBuffer buffer = getSourceBuffer(src.toString());
89         assertEquals("hello",buffer.getSnippet(new LineColumn(1,10),new LineColumn(1,15)));
90         assertEquals("oh not",buffer.getSnippet(new LineColumn(2,10),new LineColumn(2,16)));
91         assertEquals("world'" + endOfLine + "print",buffer.getSnippet(new LineColumn(1,16),new LineColumn(2,6)));
92         assertEquals(endOfLine,buffer.getSnippet(new LineColumn(1,22),new LineColumn(1,24)));
93         assertEquals(endOfLine,buffer.getSnippet(new LineColumn(2,33),new LineColumn(2,35)));
94     }
95
96     public void testOutOfBounds() throws Exception JavaDoc {
97         String JavaDoc endOfLine = "\n";
98         StringBuffer JavaDoc src = new StringBuffer JavaDoc();
99         src.append("println 'hello world'").append(endOfLine);
100         src.append("println 'oh not, not that again'").append(endOfLine);
101         SourceBuffer buffer = getSourceBuffer(src.toString());
102         assertEquals("println",buffer.getSnippet(new LineColumn(0,0),new LineColumn(1,8)));
103         assertEquals("println",buffer.getSnippet(new LineColumn(-10,-1),new LineColumn(1,8)));
104         assertEquals(endOfLine,buffer.getSnippet(new LineColumn(2,33),new LineColumn(2,40)));
105         assertEquals("",buffer.getSnippet(new LineColumn(3,33),new LineColumn(6,40)));
106     }
107
108     private SourceBuffer getSourceBuffer(String JavaDoc text) throws Exception JavaDoc {
109         SourceBuffer buffer = new SourceBuffer();
110         Reader JavaDoc reader = new UnicodeEscapingReader(new StringReader JavaDoc(text),buffer);
111
112         while (reader.read() != -1) {
113             // empty loop
114 // - read all characters till the end of the reader
115 // UnicodeEscapingReader has side effects of
116 // filling the buffer
117 }
118         return buffer;
119     }
120 }
121
Popular Tags