Getting Started
For the purpose of this article, let's say that we would like to test the core taglib from the Jakarta Taglibs implementation of the JSTL, a taglib that many people will be aware of and have experience with. Assuming that you already have
Tutorial Details:
The steps to getting TagUnit up and running are as follows.
First of all, you'll need to download a copy of the JSTL (I'm using v1.0.5) and TagUnit (I'm using v1.0.1).
Inside of the TagUnit distribution is a template web application called tagunit-blank.war. Because we're going to add to this webapp later, you'll need to deploy it to your JSP container in the exploded format. If you're using Tomcat, simply create a directory called tagunit-blank underneath $TOMCAT_HOME/webapps and extract the contents of the .war file into this directory.
At this point, if you would like to test the deployment, restart your server and point your browser to http://localhost:8080/tagunit-blank/. If all is well, you will see a page containing a number of test results for the TagUnit tags themselves.
The next step is to deploy your tag library into the tagunit-blank web application. With most tag libraries, this just involves copying one or more .jar files into WEB-INF/lib. With JSTL, you'll need to copy standard.jar and jstl.jar from the lib directory of the JSTL distribution into the WEB-INF/lib directory of the web application.
With the tags deployed, we now need to tell TagUnit about them. To do this, open up the /test/index.jsp file from the web application into your favorite text editor and modify the content to be the following.
<%@ taglib uri="http://www.tagunit.org/tagunit/core"
prefix="tagunit" %>
The first line imports the TagUnit tags, making them available for use, while the final three tell TagUnit that our tests will reside underneath /test/jstl-core and that we're testing the tag library deployed in [WEB-INF/lib/]standard.jar, described by the TLD file called c.tld inside of that .jar file.
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