There is more than one way to test user journeys that span multiple bounded contexts. Your choice depends on organizational structure, team responsibilities, and the maturity of your testing practices. Ultimately, every part of the user journey should be [...]

I’ll be speaking about compilers, testing, and machine learning at a conference near you! Abstracts for all of these sessions are on my Presentations page. Programs that Write Programs: How Compilers Work Dog Food Conference and CodeMash What Testing Can[...]

There are three rules applicable to all testing environments.  I’ve articulated one of the rules before but now I’ll add two more. Rule 1 – Dead Simple Tests must be dead simple to run.  It doesn’t matter what you’re testing.  It doesn’t matter if you’ve [...]

Like many a good man, I too got caught into the 2048 trap, which explains in part why I have been rather quiet on this blog lately (there are a couple other reasons, too). In case you don't know what 2048 is yet, first, consider yourself lucky - and, fa[...]

A couple of days ago, I got into the following Twitter exchange: @brandewinder do you have any link to get in touch with this combo? #fsharp— Max Malook (@max_malook) March 21, 2014   So why do I think FsCheck + XUnit = The Bomb? I have a long history[...]

Performing large enterprise integration projects, spanning many different teams, and technologies, is a formidable challenge. This remains true, whether you use Scrum, or waterfall – there’s no magic process. Having said this, I’d like to share some thing[...]

Phil Trelford recently released Foq, a small F# mocking library (with a very daring name). If most of your code is in F#, this is probably not a big deal for you, because the technique of mocking isn’t very useful in F# (at least in my experience). On the[...]

Taking the Coursera Probabilistic Graphical Models course has had me thinking a lot about complexity. Lately, program state complexity in the context of testing in particular. How many discrete tests would it take to ensure every combination of inputs is [...]