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Java > Open Source Codes > net > sourceforge > cruisecontrol > util > EmptyElementFilterTest


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37 package net.sourceforge.cruisecontrol.util;
38
39 import java.io.StringReader JavaDoc;
40 import java.io.StringWriter JavaDoc;
41 import java.io.Writer JavaDoc;
42
43 import org.jdom.Document;
44 import org.jdom.input.SAXBuilder;
45 import org.jdom.output.XMLOutputter;
46 import org.xml.sax.XMLFilter JavaDoc;
47
48 import junit.framework.TestCase;
49
50 /**
51  * @author <a HREF="mailto:joriskuipers@xs4all.nl">Joris Kuipers</a>
52  *
53  */
54 public class EmptyElementFilterTest extends TestCase {
55
56     private SAXBuilder builder;
57     
58     protected void setUp() throws Exception JavaDoc {
59         builder = new SAXBuilder("org.apache.xerces.parsers.SAXParser");
60         XMLFilter JavaDoc emptyTaskFilter = new EmptyElementFilter("task");
61         XMLFilter JavaDoc emptyMessageFilter = new EmptyElementFilter("message");
62         emptyTaskFilter.setParent(emptyMessageFilter);
63         builder.setXMLFilter(emptyTaskFilter);
64     }
65     
66     public void testFiltering() throws Exception JavaDoc {
67         String JavaDoc xml = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
68             + "<?xml-stylesheet type=\"text/xsl\" HREF=\"log.xsl\"?>\n\n"
69             + "<build time=\"43 seconds\">\n"
70               // empty task:
71 + "\t<task location=\"nightlybuild.xml:5: \" name=\"property\" time=\"0 seconds\"></task>\n"
72             + "\t<target name=\"build\" time=\"43 seconds\">\n"
73             + "\t\t<task location=\"nightlybuild.xml:21: \" name=\"exec\" time=\"1 seconds\">\n"
74             + "\t\t\t<message priority=\"info\"><![CDATA[Generating buildscript... done]]></message>\n"
75               // empty message:
76 + "\t\t\t<message priority=\"warn\"><![CDATA[]]></message>\n"
77             + "\t\t</task>\n"
78             + "\t</target>\n"
79             + "</build>\n";
80
81         Document doc = builder.build(new StringReader JavaDoc(xml));
82         Writer JavaDoc stringWriter = new StringWriter JavaDoc();
83         new XMLOutputter().output(doc, stringWriter);
84         String JavaDoc filteredXml = stringWriter.toString();
85         assertTrue("empty <task> should have been filtered",
86                    filteredXml.indexOf("<task location=\"nightlybuild.xml:5: \"") == -1);
87         assertTrue("empty <message> should have been filtered",
88                    filteredXml.indexOf("<message priority=\"warn\"") == -1);
89         assertTrue("non-empty task should not have been filtered",
90                    filteredXml.indexOf("<task location=\"nightlybuild.xml:21: \"") != -1);
91         assertTrue("non-empty message should not have been filtered",
92                    filteredXml.indexOf("<message priority=\"info\">") != -1);
93     }
94
95 }
96
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