// $Header: /home/cvs/jakarta-jmeter/src/htmlparser/org/htmlparser/tests/FunctionalTests.java,v 1.2 2004/02/10 13:41:08 woolfel Exp $
/*
* ====================================================================
* Copyright 2002-2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// The developers of JMeter and Apache are greatful to the developers
// of HTMLParser for giving Apache Software Foundation a non-exclusive
// license. The performance benefits of HTMLParser are clear and the
// users of JMeter will benefit from the hard work the HTMLParser
// team. For detailed information about HTMLParser, the project is
// hosted on sourceforge at http://htmlparser.sourceforge.net/.
//
// HTMLParser was originally created by Somik Raha in 2000. Since then
// a healthy community of users has formed and helped refine the
// design so that it is able to tackle the difficult task of parsing
// dirty HTML. Derrick Oswald is the current lead developer and was kind
// enough to assist JMeter.
package org.htmlparser.tests;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.htmlparser.Node;
import org.htmlparser.Parser;
import org.htmlparser.scanners.ImageScanner;
import org.htmlparser.tags.ImageTag;
import org.htmlparser.util.DefaultParserFeedback;
import org.htmlparser.util.LinkProcessor;
import org.htmlparser.util.NodeIterator;
import org.htmlparser.util.ParserException;
public class FunctionalTests extends TestCase
{
public FunctionalTests(String arg0)
{
super(arg0);
}
/**
* Based on a suspected bug report by Annette Doyle,
* to check if the no of image tags are correctly
* identified by the parser
*/
public void testNumImageTagsInYahooWithoutRegisteringScanners()
throws ParserException
{
// First count the image tags as is
int imgTagCount;
imgTagCount = findImageTagCount();
try
{
int parserImgTagCount = countImageTagsWithHTMLParser();
assertEquals("Image Tag Count", imgTagCount, parserImgTagCount);
}
catch (ParserException e)
{
throw new ParserException(
"Error thrown in call to countImageTagsWithHTMLParser()",
e);
}
}
public int findImageTagCount()
{
int imgTagCount = 0;
try
{
URL url = new URL("http://www.yahoo.com");
InputStream is = url.openStream();
BufferedReader reader;
reader = new BufferedReader(new InputStreamReader(is));
imgTagCount = countImageTagsWithoutHTMLParser(reader);
is.close();
}
catch (MalformedURLException e)
{
System.err.println("URL was malformed!");
}
catch (IOException e)
{
System.err.println(
"IO Exception occurred while trying to open stream");
}
return imgTagCount;
}
public int countImageTagsWithHTMLParser() throws ParserException
{
Parser parser =
new Parser("http://www.yahoo.com", new DefaultParserFeedback());
parser.addScanner(new ImageScanner("-i", new LinkProcessor()));
int parserImgTagCount = 0;
Node node;
for (NodeIterator e = parser.elements(); e.hasMoreNodes();)
{
node = (Node) e.nextNode();
if (node instanceof ImageTag)
{
parserImgTagCount++;
}
}
return parserImgTagCount;
}
public int countImageTagsWithoutHTMLParser(BufferedReader reader)
throws IOException
{
String line;
int imgTagCount = 0;
do
{
line = reader.readLine();
if (line != null)
{
// Check the line for image tags
String newline = line.toUpperCase();
int fromIndex = -1;
do
{
fromIndex = newline.indexOf("<IMG", fromIndex + 1);
if (fromIndex != -1)
{
imgTagCount++;
}
}
while (fromIndex != -1);
}
}
while (line != null);
return imgTagCount;
}
public static TestSuite suite()
{
return new TestSuite(FunctionalTests.class);
}
}