I've previously written about Agile test automation principles, and since then I've had some interesting discussions with people that have led me to revise them in this article. In particular, Seb Rose wrote about his 6 principles of unit testing and pointed out some...
Coding skills
Introducing a Code Kata: Medicine Clash
This Code Kata is included in my new book "The Coding Dojo Handbook", currently published as a work-in-progress on LeanPub.com. You can also download starting code and these instructions from my github page. As a Health Insurer, I want to be able to search for...
SOLID exercises in Python
In my last post I discussed some exercises put together by Luca Minudel. He was using them as part of a study into how developer's skill at removing SOLID violations was related to their skill at TDD. I initially did the exercises in Java, then translated them into...
SOLID principles and TDD
Do you automatically get better design with TDD? Does an otherwise average software developer produce superior designs if they write the tests first rather than afterwards? Does it make a difference what style of TDD you use?incident #1I was at a session at XP2012...
Principles of Agile Test Automation
Please note - As of March 2013, I have rewritten this post in the light of further experience and discussions. The updated post is available here. I feel like I've spent most of my career learning how to write good automated tests in an agile environment. When I...
Global Day of Code Retreat
A little while back I was back in Stockholm facilitating another Code Retreat, (see previous post), this time as part of Global Day of Code Retreat, (GDCR). (Take a look at Corey Haines' site for loads of information about this global event that comprised meetings in...
What is Text-Based Testing?
Programmers have a vested interest in making sure the software they create does what they think it does. When I'm coding I prefer to work in the context of feedback from automated tests, that help me to keep track of what works and how far I've got. I've written...
Code Retreat Stockholm
This weekend I was in Stockholm to facilitate a Code Retreat, organized by Peter Lind and sponsored by Valtech. We were about 40 coders gathered in the warm autumn sunshine early on a Saturday morning at Valtech's offices. (Do take a look at Peter's blog post about...
TDD in terms of states and moves
The classic description of TDD that most people know is the 3 rules by Bob Martin. I think his rules are a very succinct description, and for a long time I've just relied on them, together with a picture of "red-green-refactor" to describe TDD to newcomers. More...
Python and Ruby and small methods
I've been working full time in Ruby now for about a month, and I think I'm beginning to get the hang of it. In many ways it's not so different from Python. I took some of the code I talked about struggling with in my last post, and set about translating it into...

Hi – I´m Emily!
I am an independent consultant with Bache Consulting and chair of the Samman Technical Coaching Society. As a technical coach I work with software development organizations who want to get better at the technical practices needed to be agile, including Test-Driven Development, Refactoring and Incremental Design. I live in Gothenburg, Sweden, although I am originally from the UK. I’ve written two books: “Technical Agile Coaching with the Samman method” and “The Coding Dojo Handbook”. I teach for both O’Reilly and Pluralsight. I’m married to Geoff Bache, creator of TextTest. I am also on Mastodon as emilybache@sw-development-is.social.

If you’d like to know a bit more about me, my work, and the talks and workshops I offer, please visit my main website: EmilyBache.com. There, you’ll find information about my background, upcoming events, and the services I provide as a technical coach and consultant. It’s a good place to start if you’re curious about how I can support your team in improving coding skills and agile practices.
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