Tuesday, June 28, 2011

KWST & Possum Testing

(from http://irishchicklette.wordpress.com/2009/02/24/)
This last weekend, I had the pleasure and privilege of attending the first ever KWST (Kiwi Workshop on Software Testing). Seventeen leaders in the software community came together in Wellington to discuss the topic of test professionalism.  You can read about the workshop here and here.  Two very interesting terms came out that Brian Osman had coined to described his observations in the testing profession.  One was stealth testing, which I'll talk about in another post, but the first was "Possum Testing".

The analogy is of a possum frozen in the headlights in the middle of the road.  It should be noted that after much discussion and exploration of the concept, everyone came away with their own definitions, but the definition I came away with was: "Testing that is motivated by fear."  An alternative definition was "Testing that you don't value" and yet another put a bet on both ways and used the definition "Testing you don't value, motivated on some level by fear."  I'm sure that over time as we think and discuss it more, we will refine the definition.

(**Edit 30/06/2011 On reflection, I realise it's important to distinguish the "testing you don't value" aspect, so I see now that "Testing that you don't value, motivated by fear at some level" is the better definition.)

Possum testing manifests itself when a tester is undertaking any test activity, such as writing test scripts, creating test documents, and doing "bad" testing because of the fear of being wrong, fear of appearing foolish, fear of being exposed as ignorant, fear of being challenged, or even fear of losing your job.  They are simply going through the motions because, like a possum in the headlights, they are frozen from fear to do anything else.

I can remember being a newbie tester, unsure of myself, and being told by people that wear ties that I need to script what I do so it can be repeatable. It seemed wrong to me, but I complied (for a day before I really decided that it was a complete waste of time) out of fear of being accused of not knowing what I was doing.  Fortunately the road I crossed to become the tester I am today was mostly empty of speeding vehicles.

Our industry is full of possums, and it's no wonder.  Testers are being confronted constantly by the blinding headlights of folklore and myth, attached to heavy process-vehicles driven by managers and even other testers who don't actually understand the complexities and subtleties of testing.

We need to take back control of our profession, and refuse to let the traffic freeze us.  It can be scary.  I recently was in a situation where I was asked to produce a document that I didn't value.  Producing this document would have propagated deception in the name of process, but I feared the potential conflict that would arise if I refused.  Realising that complying would be "possum testing"  helped me to have the courage to take control of the situation, and unfreeze myself.  I offered an alternative document that I did value, and I was able to step out of the headlights.

For those of us who have made it safely across the road, I think we should try to help our possum brothers and sisters who are still frozen in the middle of the road, and show them the true light.


  1. Brilliant! Great post on possum testing - the possum testing definition i like is "Testing you don't value motivated on some level by fear" and unfortunately it is true on many levels (creating bogus test documentation or taking certification courses/exams that offer little/no value).

    Looking forward to how you describe Stealth testing next!

  2. Nice point and well made. I think fear itself, or uncertainty, is a fine and valuable motivator for test investigation, along with all sorts of other disciplines. So I don't think fear itself is the problem, but how we respond. How we react. Probably worth an FDR fireside chat tie-in, somewhere, in there, but I just can't put my finger on it.

    Anyway, good job. Fear shouldn't dictate your goals or objectives.

  3. Excellent article. The fear of being 'found out' or even the fear of not doing things the way they have always been is something true professionals have to overcome before they can advance. What I always remind myself (even when I'm the assigner), is that I want to be told what problem I'm solving, not how to solve the problem. I've I'm given the latter, I was always 'afraid' to do it any other way. When I'm given the former, I'm free to figure out the best way to solve the problem.

  4. I've experienced quite a lot of this in my last role. It lead to lots of interesting debates. Thankfully my boss at the time was more than happy to try out any changes I'd suggested. He was a good guy, and was the main reason I stayed in that role for so long.

    I like Brian's above comment on certification, it's true for the little value it brings it seems ISEB, at least in my experience here in the UK is driven by fear. Testers want to have minimal certification to ensure they can bypass basic checks when applying for new roles.

    Excellent post, thanks for sharing it with us.

  5. On reflection, I realise it's important to distinguish the "testing you don't value" aspect, so I see now that "Testing that you don't value, motivated by fear at some level" is the better definition.

  6. Glad to see you were able to use that discussion to assist you in a real live example. That is the power of community in action i.e. the KWST community defined a concept and you have demonstrated a practical use of that concept. Awesome post, by the way.

  7. Our website has many interesting games. Please share this with your friends and have fun.
    Friv 2/
    Kizi 1000

  8. Thank you for your interest ! Check out my site! you can play
    Kizi 100/
    Friv 2017/
    Kizi 2017

  9. You need entertainment. Refer to our website. hope you get the most comfortable
    Friv 5
    Kizi 2
    Kizi 10
    Kizi 100
    Friv 100

  10. Hello very cool site!! Man .. Excellent .. Superb .. I’ll bookmark your site
    and take the feeds additionally? I’m glad to find so many useful info right here within the put up, visit here we
    need develop extra strategies on this regard,
    thanks for sharing. . . . . .

  11. I'm puzzled with lots of exercises. I was afraid I could not do the right time despite my hard work. I need a support person.

  12. Welcome, your blog is great. It's very interesting and meaningful
    Kizi 1

  13. We are very happy to play games regularly. It's great!
    Friv 2
    Friv 4

  14. The best online games website has many more games in store for you!
    Kizi 10
    Kizi 100
    Happy wheels

  15. Very interesting information I like this site very much so much superb information.
    Friv Games
    Kizi Games
    Yepi Games

  16. Thank you for such a sweet tutorial - all this time later, I've found it and love the end result. I appreciate the time you spent sharing your skills.
    Manga Kiss

  17. Finding the best biological science paper writing help and Biological Science Writing Services is not easy unless one is keen to establish a reliable biological science research paper provider & biological science coursework writing services.