There is a lot of content you can get by leveraging automated testing And most importantly that content is going to be auto maintained Let s say you document a command line tool and you want to provide an example of some operation output You can copy and paste the output risking it being outdated Or you can write a test that exercises a command line and also captures its output You end up getting a lot of benefits your app is tested your documentation is auto updated

In addition to command line tools here are some common scenarios you should consider Test Web UI application screenshots Test Business Logic tabular data Test REST API API JSON real examples Config files Script snippets Runtime dependencies DAGs

As you write your documentation you will come up with new scenarios to test As you write tests think about your documentation and what test produced artifacts can improve it Znai provides a lot of utilities to include test artifacts In Synergy With Testing chapter you will see examples of UI REST API and Business Logic