Henrik Emilsson has convinced me that skilled software testing is based on invisible mental models that help us see what can be tested. If we can make these visible, we can sharpen our skills, and also teach testing more effectively. Here follows a simple example I used in class, that shows that by switching between [...]
When I meet testers I often ask what test design techniques they use on a regular basis. I am really curious which of the techniques that I know of that they use and I am always looking for new material. I have taught test design classes to maybe a thousand people over the years and [...]
It has been said by many, but I heard it from Fiona Charles: “don’t ever fall in love with your model”, and this is a warning I want to elaborate. A model is a powerful way to understand how the system works, and thereby also how it can fail. But a model can also narrow [...]