Category: Visualization

DEWT4 sketchnotes

This are my sketchnotes from DEWT4. The central theme of the fourth DEWT peer conference was “Teaching Software Testing”.

Click the images to view them full size.


My Tools

DEWT3 Sketchnotes

Here are the sketchnotes I made during DEWT3. Click the images to view them full size.

On the scale of Context-driven…

In the last edition of Testkrant (in Dutch) I published an article on context-driven testing called “I am a context-driven tester! Huh? Really? So?“. In this article I (try to) explain what context-driven testing means and why I think I am context-driven. Jan Jaap Cannegieter reacted via email asking an interesting question which has crossed my mind several times already. The following quote is from his email but translated and slightly changed:

“Isn’t everyone context-driven to some extend? And I mean that on a sliding scale. People who always use the same method and implements this method slightly different every time are maybe 2% driven context (I have combined context-driven and context-aware, sorry for simplification). The Jedi tester using dozens of test methods that he blends to a unique test approach to apply in a specific situation is perhaps 98% context-driven.”

ETscaleJon Bach presented a “freedom” scale in his presentation Telling Your Exploratory Story at Agile 2010 Conference. Jon contrasts scripted testing and exploratory testing by plotting them in the freedom scale above.

Could such a scale also be applied to being a context-driven tester? Contrasting “Context-oblivious” with “Context-driven”? Maybe putting “context-aware” somewhere in the middle of the scale? Context-driven, context-oblivious and context-aware are explained on the website www.context-driven-testing.com.

cdt_scaleI am not totally happy with this model yet, but can’t put my finger on it how to improve it. There is more to being context-driven as only applying methods and techniques. I also ask myself what is the added value of such a scale? I think it helps testers understand the differences between context-oblivious, context-aware and context-driven better. It might also make it easier to bridge the gap between the extremes or even advocate that everybody is or can be context-driven in some extend?

What do you think?

Visualization

This blog post was originally written as an column for www.testnewsonline.com (English) and www.testnieuws.nl (Dutch).

Did you have a chance to see the webinar “Thinking Visually in Software Testing” by Alan Richardson at the EuroStar Virtual Conference May 16th last? If not I suggest you do that now before you read this column. Also very interesting is the great blog post Fiona Charles has written about this topic with the beautiful title “Breaking the Tyranny of Form”.

Alan explains that simple techniques and tools you can make your thinking visual. It makes your thoughts visible what benefits the feedback to yourself, but also the communication of your thoughts to others. In the webinar Alan shows some simple drawings that made his thought process transparent. The webinar also shows some simple tools that can help you.

Fiona is annoyed by documents where the form is more important than the content. These documents are driving and constraining our work. She explains that templates limit thinking and creativity. In her article she shows some examples of visual representations that helped her in her work.

Text is boring and not very creative. It lets your brain run at half power, only the left part of the brain is put to work. Using images will also put the right part of your brain to work. People remember images easier. In addition, images often impress us more. A text normally needs many pages to describe what a single picture can say. The saying “a picture is worth a thousand words” is really true! A single image can transfer a complex idea fast and easy. Visualization allows us to quickly absorb large amounts of information.

Collaboration through effective communication

Visualization makes your work easier! Through visualization, communication is richer and that makes our work easier. Understanding each other is often the first step to successful collaboration. To clarify the added value of different forms of communication, I often show this picture:

This picture makes clear that communication is enriched with visualization. For who ever bought a new house, you know: graphics were the deciding factor. The plans and artist impressions gave, before only one stone was built, an impression of how the future house was going to look like. The visualization of the house to be built, informed your decision. Could text do the same?

But why do testers still produce so much text in their work? The creation of “traditional” test plans, test reports and test cases is very time consuming. And I think they do not add a lot of value. Have you ever wondered how many people actually read your test plans arising from the use of a 21-page template? And if somebody would have read it, how much useful information is in there for the reader? And what will he ultimately remember?

Mind Maps

Nowadays mind maps are very popular. I use them almost daily for various purposes: insight into situations, problem solving, summarizing, making records, creating plans, develop ideas or report status. I even created a mind map of my resume. The possibilities of mind maps are endless. The theory behind mind maps is fairly simple and making them stimulates the creative side of our brains through visualization.

On the back of a napkin

The drawing of (simple) images can be of great value. In my search for literature on creativity and visualization a few weeks ago, I walked into a book by Dan Roam called “The back of a napkin, Solving Problems and Selling Ideas with Pictures“. In this book Dan Roam describes how a simple drawing can help. I’m not a great artist and the simple drawings in this book appealed to me immediately. Ultimately it just requires drawing of simple shapes: lines, rectangles, smiles and stick figures.

His philosophy is that every problem can be solved with a simple drawing. In his book he introduces four steps of visual thinking, five questions that help focus and six ways of seeing. Try it and see if it helps you.

Inspiration

I hope these examples inspired you to try to use more visualization. Try writing a test plan with a mind map or visualize your test strategy and scope with images. Why not put your thoughts on paper using a few sketches? Don’t let the thought that you can’t draw stop you. The creative process is much more important than the final result. Furthermore, you will see that it isn’t really that bad!

Awesome examples
Finally, I want to share some great examples of visualizations, two beautiful animations. The first is Steven Johnson – Where Good Ideas Come From:

And the second is Dan Pink – Drive. The surprising truth about what motivates us:

This Dutch example by Avans Hogeschool also shows how powerful visualization can be:

Gojko Adzic uses simple but very powerful pictures in his presentations that help me understand and remember his message easy.

The last example I like to share is a blog post about visualizing strategy, concept and design which shows some good examples of visualizations and has a few interesting links at the end. Good luck!