TDD & PP Workshop for Sterias FHS og T&D team, 9. desember, 2010 Johannes Brodwall Anders Karlsen

TODO: MAKE NICE Intro 10m Prep: Fizzbuzz (UncleBobs regler) – 25m Dojo: Yahtzee 45m Prep: Tennis (Johannes regler: Enklest test, enklest kode,kode guider test) – 35m Lunsj – 60m 20m lean vs agile Dojo: Poker 90m 13:50 Legacy demonstrasjon Diskusjon

Lean vs Agile

LeanAgile By invitationIncluding DesigningDoing Feed forwardFeedback High throughputLow latency PlannedReactive/adaptive Create models of the worldShare models of the world ProcessPeople Manage complex problems StandardizeInspect and adapt

Test-driven development

Uncle Bob’s Rules No code without test Only enough test for red Only enough code for green

Demo: FizzBuzz

What to watch for

How we interact How we use Eclipse The design of the code The design of the tests Refactorings

What did you notice?

Code dojo: Yahtzee

Test-driven development (recap)

Uncle Bob’s Rules No code without test Only enough test for red Only enough code for green

Test-driven design

Johannes’s Rules Test for simplest structure Implement simplest structure Use limitations in code to guide next test Refactor all the time

Johannes’s Rules Test for simplest structure Implement simplest structure Use limitations in code to guide next test

Demo: Tennis

Code dojo: Poker hands

High card Pair Two pair Three of a kind Straight Flush Full house Four of a kind Straight flush

Real world testing

Rules Arrange Act Assert

Demo: Legacy code

Recap Uncle Bob’s rules Johannes’s rules Arrange-act-assert

Working together Scrum board with magnets Rotate pairs daily Pair programming star

Open discussion

Takk for oppmerksomheten twitter.com/jhannes twitter.com/anderskar