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Java > Open Source Codes > org > displaytag > test > URLAssert


1 package org.displaytag.test;
2
3 import junit.framework.Assert;
4
5 import org.apache.commons.lang.ArrayUtils;
6 import org.apache.commons.lang.StringUtils;
7
8
9 /**
10  * Assert class used to compare URLs.
11  * @author Fabrizio Giustina
12  * @version $Revision: 729 $ ($Author: fgiust $)
13  */
14 public final class URLAssert
15 {
16
17     /**
18      * Don't instantiate.
19      */
20     private URLAssert()
21     {
22         // unused
23 }
24
25     /**
26      * utility method for comparing two URLs.
27      * @param expectedUrl expected URL
28      * @param generatedUrl generated URL
29      */
30     public static void assertEquals(String JavaDoc expectedUrl, String JavaDoc generatedUrl)
31     {
32         // hack for missing base url
33 if (expectedUrl.startsWith("?"))
34         {
35             expectedUrl = "[empty]" + expectedUrl;
36         }
37         if (generatedUrl.startsWith("?"))
38         {
39             generatedUrl = "[empty]" + generatedUrl;
40         }
41
42         // if urls contains parameters they could be written in different order
43 String JavaDoc[] generatedSplit = StringUtils.split(generatedUrl, "?#");
44         String JavaDoc[] expectedSplit = StringUtils.split(expectedUrl, "?#");
45
46         Assert.assertEquals(
47             "Different number of tokens (base, parameters, anchor) in link.",
48             generatedSplit.length,
49             expectedSplit.length);
50
51         // same base url
52 Assert.assertEquals("Wrong base url", generatedSplit[0], expectedSplit[0]);
53
54         // same anchor #
55 if (generatedSplit.length > 2)
56         {
57             Assert.assertEquals("Anchor is different", generatedSplit[2], expectedSplit[2]);
58         }
59         else if (generatedSplit.length > 1 && (generatedUrl.indexOf("?") == -1))
60         {
61             // url without parameters
62 Assert.assertEquals("Anchor is different", generatedSplit[1], expectedSplit[1]);
63             return;
64         }
65
66         // same parameters
67 if (generatedSplit.length > 1)
68         {
69             // compare parameters
70 String JavaDoc[] generatedParameters = StringUtils.split(StringUtils.replace(generatedSplit[1], "&", "&"), '&');
71             String JavaDoc[] expectedParameters = StringUtils.split(StringUtils.replace(expectedSplit[1], "&", "&"), '&');
72
73             Assert.assertEquals(
74                 "Compared urls have different number of parameters",
75                 expectedParameters.length,
76                 generatedParameters.length);
77
78             for (int j = 0; j < expectedParameters.length; j++)
79             {
80                 // assuming url?param == url?param=
81 String JavaDoc singleParam = expectedParameters[j];
82                 if (singleParam.indexOf("=") == -1)
83                 {
84                     singleParam += "=";
85                 }
86                 Assert.assertTrue(
87                     "Expected parameter " + singleParam + " could not be found in generated URL",
88                     ArrayUtils.contains(generatedParameters, singleParam));
89             }
90         }
91     }
92 }
93
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