Skip to main content

Getting started with testability



At TestBash Netherlands, I said that, in my experience, a lot of testers don't really get testability. I would feel bad if I didn't follow that up with a starting point for expanding your mindset and explicitly thinking about testability day to day, and making your testing lives better! 

In large scale, high transaction systems testability really is critical, as compared to the vastness and variability of the world, testing done within organisations, before deployment, is limited by comparison. We need ways to see and learn from the systems we test where it matters, in Production.

Being able to observe, control and understand is central to testing effectively, and there are loads of resources and experience reports out there to help. I was/am inspired by James Bach, Seth Eliot, Matt Skelton, Sally Goble, Martin Fowler and a little bit of PerfBytes/Logchat, so lets see if it works for you! 

Overall Model:

Heuristics of Software Testability by James Bach

http://www.satisfice.com/tools/testable.pdf

In particular, the intrinsic testability of a system. I firmly believe that a system with high testability has high supportability in this regard. If you could build a system that gave those with operational responsibility with the ability to observe, control and understand what was happening, they would be stoked right? 


Videos:

Seth Eliot introduces testing in production with some compelling examples


Sally Goble then talks about shifting testing away from current models and leveraging production:

Articles:

Perfect Testing 

Feature Toggles

https://martinfowler.com/articles/feature-toggles.html

Rethinking Pipelines



Data Driven Quality

Signal vs Pass/Fail

Ask for Testability - Interesting Idea on Scriptable API's to drive the product

http://www.developsense.com/blog/2014/05/very-short-blog-posts-18-ask-for-testability/

A Map for Testability - Visualising testability in early product conversations

http://www.a-sisyphean-task.com/2014/07/a-map-for-testability.html

Putting Your Testability Socks On - Analysis of the SOCKS testability mnemonic

http://www.a-sisyphean-task.com/2012/07/putting-your-testability-socks-on.html

Audio:





Comments

  1. Good post! Software testability is integral part of a software development. If a software is not testable it is of no use for the organisation.

    ReplyDelete
  2. This comment has been removed by a blog administrator.

    ReplyDelete

Post a Comment

Popular posts from this blog

Testers Guide to Myths of Unit Testing

One area that testers might be able to enhance their contributions to software development teams is how we perceive and contribute to unit testing. I believe testers busting their own illusions about this aspect of building something good would bring us much closer to developers, and help us realise what other layers of testing can cover most effectively.

Also, I want to do a talk about it, so I figured I would test the premise, see if potential audiences were into it. I put this on Twitter:
Working on a talk about what testers might believe about unit #testing & how we interact with developers creating unit tests. Any challenges/additions for my list below? #development#agilepic.twitter.com/4oT5HE4qs3 — Ash Winter (@northern_tester) December 19, 201730 replies with ideas tends to indicate that people might be into it. 
The ListI thought, as my final blog of 2017, I would provide a super useful list of the myths and legends we as testers might believe about unit testing:
That developer…

Wheel of Testing Part 3 - Applications

I've only had to quit two jobs to finally find the time to finish this blog series. Winning at life. If you need reminders (like I did) check out Part 1 and Part 2 before reading on...

After the first two blogs regarding the Wheel of Testing, I was delighted to receive a few requests for the wheel itself, which got me thinking about applications of it, beyond what its original intent was, which I've explored in detail in part 1 of this series of intermittent blogs. Most models need a little air time to show their value, in software development we crank out models all the time, but I'm not sure how many get used. I am inspired by models such as the "Heuristic Test Strategy Model" by James Marcus Bach, as I have used it and seen the benefits it has brought for my clients, particularly the ability to ask questions. So, I wanted to create a model which has a number of use cases, both real and imagined:

Helping to unlocking a career in testing which may be stuck

It is no…

Why do Testers become Scrum Masters?

It was late and I was stuck on a train, so I pondered on the question of why do testers often (in my experience) become Scrum Masters. Its a very dear question to me, as its been a big part of my career journey In fact, I've been there and back again. Tester to supposed-to-be-testing-but-being-a-Scrum-Master to Scrum Master, back to Tester and very happy thank you.

I encapsulated my reasoning in the following:
Long train delay, decided to think about a thing. :) Why do testers (in my world anyway) often become Scrum Masters? #testing#agile#scrumpic.twitter.com/FGGXFiBGz1 — Ash Winter (@northern_tester) February 13, 2018The tweet got a lot of traction, and generated a couple of interesting threads which made me think.
Great list. Personally I think that as a scrum master I can add even more towards the goal of quality. — Christian Kram (@chr_kram) February 13, 2018 Perhaps part of the reason for the transition is a growing appreciation of where quality has its roots? If testing i…