Category Archives : Uncategorized


Reachability graphs make irrelevant states clear

Want to be a testing guru? Use reachability graphs (Part 2) 1

A fairly long time ago, I introduced reachability graphs and showed you how to start using them to debug applications. After all, debugging is a form of testing. In this post, I’ll continue exploring reachability graphs for the purposes of exploratory testing. To illustrate their useful power, I will use reachability graphs to test some aspects of an […]


An example of how TestLess’ TestDetectors work

In this post, I’ll illustrate the workflow that you can use to extend TestLess so it can analyze any test suite. I will use a real example from a real customer to show you how easy it is to extend TestLess.     The Problem Recently, I received the following question from a customer:   I’d […]


Mutator and TestLess are improving the quality of software you use!

In this post we take a quick look back at the success stories for Mutator and TestLess that you might not know about:   Bloom Filters Bloom filters are everywhere nowadays, and having seen the quality improvements that Mutator started, it is no wonder that the authors of one popular implementation decided to continue on that road.   Best of Breed Mutator […]