testing dostart and doend tag

[sangineni phaninder]

"
can some one send a sample code on testing dostart and doend methods"

[Jeanne Boyarsky]

What do you have so far? What are you stuck on?

[Lasse Koskela]

And how should we know what "dostart" and "doend" are?

[Cameron Wallace McKenzie]

Not sure if you're looking for a JUnit test, or just some code that you can run and test on its own. Here's a little custom tag I use on my site:

There's a multimedia tutorial on my website that demonstrates how to create a custom tag, and incorporate it into a JSP. There is also a downloadable EAR/WAR file that you can deploy on your own:

Creating Custom Tag Libraries for use in JSP Pages

Cheers!

-Cameron McKenzie

  package com.examscam.servlet.tags;
 
import java.io.IOException;
 
import javax.servlet.ServletContext;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpSession;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.TagSupport;
 
import com.examscam.common.Timer;
 

public class TimerTag extends TagSupport {
 

public int doStartTag() throws JspException {
JspWriter out = pageContext.getOut();
ServletRequest request = pageContext.getRequest();
ServletResponse response = pageContext.getResponse();
ServletContext application = pageContext.getServletContext();
HttpSession session = pageContext.getSession();
 
Timer t = (Timer)session.getAttribute("timer");
if (t==null){
t = new Timer();
session.setAttribute("timer", t);
}
try {
out.print("<BR/><B>Elapsed Time: </B>" + t.getElapsedTime());
out.print("<BR/><I>Start Time: </I>" + t.getStartTime());
} catch (IOException e) {
 
e.printStackTrace();
}

return SKIP_BODY;
 
}
}  
 
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE taglib
PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.1//EN"
"http://java.sun.com/j2ee/dtds/web-jsptaglibrary_1_1.dtd">
<taglib>
<tlibversion>1.0</tlibversion>
<jspversion>1.1</jspversion>
<shortname>examscam</shortname>
<uri>/WEB-INF/examscam-taglib.tld</uri>
<info>ExamScam Tag Library</info>
<tag>
<name>timerDisplay</name>
<tagclass>com.examscam.servlet.tags.TimerTag</tagclass>
<bodycontent>empty</bodycontent>
<info>Displays Elapsed Time and Start Time</info>
</tag>
</taglib>