# Using Junit

To add JUnit capabilities to your module, add the following jars to your project:

You can find these jar files in your NetBeans installation at the following location:

C:\Users\xxxxxxxx\AppData\Roaming\NetBeans\7.3.1\modules\ext\junit-4.10.jar

C:\Users\xxxxxxxx\AppData\Roaming\NetBeans\7.3.1\modules\org-netbeans-libs-junit4.jar

C:\Users\xxxxxxxx\AppData\Roaming\NetBeans\7.3.1\modules\org-netbeans-modules-junitlib.jar

**Reading INTViewer Data Files in Unit Tests**

JUnit is not aware of the NetBeans data pool that underlies the INTViewer data pool/factory:

If you want to use the IData.factory.createNewInstance method as part of your tests, you need to add test [dependencies](/solutions/intviewer/intviewer-platform-and-modules/module-dependencies) for the Master Filesystem. The following lines need to be added to your project.xml file:

```xml
          <test-dependency>
               <code-name-base>org.netbeans.modules.masterfs</code-name-base>
          </test-dependency>
```

Here is an example of what a project.xml file will look like:

For more information about this NetBeans file system, consult this article: [wiki.netbeans.org/UsingFileSystemsMasterfs](http://wiki.netbeans.org/UsingFileSystemsMasterfs)