Author Archive

The Notepad and Visualize Heuristics Rikard Edgren 1 Comment

I was at Nordic Testing Days and had a great time meeting new and old friends. During my presentation about serendipity I showed two heuristics I wanted to share here as well. They both concern observing from different angles, to learn something new, and increase chances of serendipity. The Notepad Heuristic Years ago I worked […]

Charisma Testing Rikard Edgren 4 Comments

Why do you prefer a product even if it has equal functionality to a competitor? What is it that makes one product stand out amongst the other? Maybe you have had thoughts about what makes a product feel special? We all know that this happens in some way, but how do you test for the […]

Acting On Answers Rikard Edgren 1 Comment

Asking questions is rightly regarded as important for testers. But I seldom here anything about what we should do with the answers. Not that I believe anyone would ask the question, then not listen to the result, but I think we take for granted that we will understand the answers, and that we can use […]

Using Quality Characteristics Rikard Edgren 3 Comments

More than 3 years have passed since we published the first version of our Software Quality Characteristics. It is quite popular, and it is now translated to 8 languages by testing enthusiasts. But it’s about time to talk a bit more about how to use the list, where there are at least three typical scenarios: […]

Lateral Tester Exercise V: FizzBuzz Rikard Edgren 12 Comments

I am always at the lookout for new testing exercises, since I teach a lot. Today I found a programming exercise at http://imranontech.com/2007/01/24/using-fizzbuzz-to-find-developers-who-grok-coding/ that I thought could be turned into something for testers. Since it doesn’t fit any of my current teaching schemes, I blog about it instead of putting it in the closet. Instructions: […]

ISO 29119 – a benevolent start Rikard Edgren 5 Comments

When I test software I try to start friendly, to see the good things about the system, and to not focus too much on problems, that might not be important for the whole. So I did this for the new ISO 29119 testing standard, where I have read the three parts that were published September […]

Kahneman and Test Strategy Bias Rikard Edgren 4 Comments

Our minds are fantastic, but can be biased and make dubious decisions. As I read Kahneman’s Thinking, Fast and Slow, I thought about test strategy and found some interesting stuff, based on mistakes I have seen, and done. Answering An Easier Question “How could we possibly test everything important?” is a very difficult question. It […]

What Is a Good Test Strategy? Rikard Edgren 6 Comments

To me, a test strategy is about “what to test and how” and “ideas that guide testing towards the testing missions“. It is an ongoing process, not necessarily a document, and important for the results of the test effort. A good test strategy should be unique for the situation, but there are som general properties […]

10 Years of Lousy Test Strategies Rikard Edgren 7 Comments

For the first 10 years of my testing career I wrote lousy test strategies. I believe the actual test strategies, what we tested and how, were adequate, but the way it was communicated, as part of test plans, was not good. As many strategies, they more or less just stated different functionalities, and that they […]

Book reflection: Tacit and Explicit Knowledge Rikard Edgren No Comments

Harry Collins’ Tacit and Explicit Knowledge is a book about scripted and exploratory testing. Explicit knowledge is what can be told and is able to transfer knowledge. Tacit knowledge is what can’t be told (yet), knowledge transferred in other ways than reading/listening. There is nothing strange or mystical about this, “experience goes along with having […]