On: Uncle Bob on DHH: Monogamous TDD

[pjmlp]

How do you TDD CSS and dynamic transitions on the UI, according to the target browser layout, in all devices request by customers?

For example, TDD a CSS responsive transition among Chrome, Safari, IE, iOS, Android, WP, TV settop boxes across multiple resolutions.

[kaonashi → pjmlp]

I usually just test the addition/subtraction of a class, and don't test the purely visual elements.

[pjmlp → kaonashi]

So you just contradict yourself? So you don't really test all aspects of web UI's.

[kaonashi → pjmlp]

I suppose you're correct. We are starting to do some image-diff based regression testing, but I'm not sure that anyone really does css TDD.

TDD is in large part about getting the feedback-loop cycle as quick as possible while you're developing. JS unit and integration testing can help with the functional aspects, but visual aspects are better paired with a tool like livereload.