Long time ago I got attracted to mutation testing (http://en.wikipedia.org/wiki/Mutation_testing). Alas, at that time all the Java mutation testing tools were useless: abandoned and forgotten long time ago. Lately I discovered a new tool - PIT Mutation Testing (http://pitest.org/) - which is actively developed. So I gave it a try. A very limited try (but that is only the beginning!).

Want to have always the latest documentation and database schema available? Then build it on your CI!

Recently I spent some time working with legacy code. The usual stuff - fixing bugs, introducing requested changes. In this blog post I share some comments on working with such code.

Recently, when working with maven-release-plugin (used in some old, long forgotten codebase) we encountered few issues. This post explains two of them.

That is pretty cool that your CI polls SCM every minute to build and tests your code instantly. However, you still need a nightly build. Read why.

One day I started to experiment with visualization of test dependencies. I thought that maybe Graphviz can help to provide some nice diagrams that would help me see instantly what went wrong, and why some tests are skipped. In this post I present my achievements so far.

The source code is available at github. Enjoy !
This post shows how to generate nice database diagrams using SchemaSpy, HSQLDB and Groovy. And, what is crucial, to do so in programmatic way, that is without clicking any GUI.

Oldest developers can't recall the times when TestNG introduced timeout constraints for tests methods (invocationTimeOut parameter of @Test annotation). The current beta of TestNG allows to set timeouts also for configuration methods.

I spent last few days searching for tools that would facilitate process of writing few articles using Docbook. I analyzed few solutions - mainly XMLmind XML Editor, Vim with various plugins and Asciidoc. This post presents the result of this research.

Here come slides, source code and some comments on my Gradle talk on Javarsovia 2010. Enjoy!