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Java > Open Source Codes > org > h2 > test > unit > TestPattern


1 /*
2  * Copyright 2004-2006 H2 Group. Licensed under the H2 License, Version 1.0 (http://h2database.com/html/license.html).
3  * Initial Developer: H2 Group
4  */
5 package org.h2.test.unit;
6
7 import org.h2.expression.CompareLike;
8 import org.h2.test.TestBase;
9 import org.h2.value.CompareMode;
10
11 /**
12  * @author Thomas
13  */
14 public class TestPattern extends TestBase {
15     
16     public void test() throws Exception JavaDoc {
17         CompareMode mode = new CompareMode(null, null);
18         CompareLike comp = new CompareLike(mode, null, null, null);
19         test(comp, "B", "%_");
20         test(comp, "A", "A%");
21         test(comp, "A", "A%%");
22
23         for(int i=0; i<10; i++) {
24             String JavaDoc pattern=getRandomPattern();
25             String JavaDoc value=getRandomValue();
26             test(comp, value, pattern);
27         }
28     }
29     
30     void test(CompareLike comp, String JavaDoc value, String JavaDoc pattern) throws Exception JavaDoc {
31         // TODO test: need another regexp implementation (this one doesn't work for gcj)
32 // String regexp = initPatternRegexp(pattern);
33 // boolean resultRegexp = value.matches(regexp);
34 // boolean result =
35 comp.test(pattern, value, 'X');
36         
37 // if(result != resultRegexp) {
38 // throw new Exception("Error: >"+value+"< LIKE >"+pattern+"< result="+result+" resultReg="+resultRegexp);
39 // }
40 }
41
42     static String JavaDoc getRandomValue() {
43         StringBuffer JavaDoc buff = new StringBuffer JavaDoc();
44         int len = (int)(Math.random() * 10);
45         String JavaDoc s = "ABCDEFGHIJKLMNOP";
46         for(int i=0; i<len; i++) {
47             buff.append(s.charAt((int)(Math.random()*s.length())));
48         }
49         return buff.toString();
50     }
51
52     static String JavaDoc getRandomPattern() {
53         StringBuffer JavaDoc buff = new StringBuffer JavaDoc();
54         int len = (int)(Math.random() * 4);
55         //String s = "ABC%_\\";
56 String JavaDoc s = "AB_";
57         for(int i=0; i<len; i++) {
58             buff.append(s.charAt((int)(Math.random()*s.length())));
59         }
60         return buff.toString();
61     }
62
63 // private String initPatternRegexp(String pattern) {
64 // int len = pattern.length();
65 // StringBuffer buff = new StringBuffer();
66 // for (int i = 0; i < len; i++) {
67 // char c = pattern.charAt(i);
68 // if (escape != null && escape.charValue() == c) {
69 // if (i >= len) {
70 // throw Message.internal("escape can't be last char");
71 // }
72 // c = pattern.charAt(++i);
73 // buff.append('\\');
74 // buff.append(c);
75 // } else if (c == '%') {
76 // buff.append(".*");
77 // } else if (c == '_') {
78 // buff.append('.');
79 // } else if(c=='\\'){
80 // buff.append("\\\\");
81 // } else {
82 // buff.append(c);
83 // }
84 // // TODO regexp: there are other chars that need escaping
85 // }
86 // String regexp = buff.toString();
87 //// System.out.println("regexp = " + regexp);
88 // return regexp;
89 // }
90
91 }
92
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