Any session by Kevlin is great, so this is definitely recommended watching: [Wayback/Archive] Structure and Interpretation of Test Cases • Kevlin Henney • GOTO 2022 – YouTube
Via [Wayback/Archive] Ifeora Okechukwu on Twitter: “On the structure and interpretation of test cases: by @KevlinHenney Awesome talk!!! “.
A few takeaways:
- Kevlin uses the same Leap Year case as I have taught since the mid 1990’s: I like the way we both approach software development, though I can still learn a lot from Kevlin.
- Non-programmers understand more than you might expect, just like you can get much more from a foreign news paper than you would think at first thought
- You should know how to draw a Venn diagram with 4 sets allowing *all* combinations of those (search for “Venn’s four-set diagram using ellipses” in the link on the left)
- Kevlin shows these 4 sets:
- Common cases
- Simple cases
- Boundary cases
- Edge cases
The first two and last two sound similar. They aren’t.
- Wrinkles and various levels of code coverage: don’t fool yourself as that is easy to do
- The way of thinking is “thorough” (note from self: AI is not thorough, it is statistics)
- Calendars are difficult (and depending a lot on the period and region their usage are valid for) – I already knew that, but it was good to be reminded off; see presentations by Jon Skeet for more information on it, see the blog tag Jon Skeet, or for instance these links:
The Wiert Corner - irregular stream of stuff 