To test your article, please refer the following article:
Testing a Web Application Zip Package for Inclusion with the Web Application Gallery
https://www.iis.net/learn/develop/windows-web-application-gallery/testing-a-web-application-zip-package-for-inclusion-with-the-web-application-gallery
You can use also the Web PI command line tool to test the application. We recommend that you test your application with Web PI and WebMatrix for the following :
The application must install successfully onto IIS
The application must install successfully onto WebMatrix (IIS Express)
If you application has a database, you should be able to view the database in WebMatrix
Publish your application to a remote site using WebMatrix
Download your application to the local site created on WebMatrix