TDDの練習 Coding Kata の実践

Transcript

1. Coding Kata TDD practice with

2. hakobe hatena: id:hakobe932 twitter: @hakobe github: @hakobe

3. TDD Test Driven Developement

4. –Robert C. Martin “ཁ͢ΔʹTDD͸ϓϩͷબ୒ͳͷͩɻ ࣮֬ੑɾܽؕࠞೖ཰ͷ௿Լɾ༐ؾɾ
 υΩϡϝϯτɾઃܭΛଅਐ͢Δن཯ͩɻ”

5. ϓϩͳΒ͹TDDΛ࢖͏

6. TDDͷࡾݪଇ 1. ࣦഊ͢ΔςετΛॻ͘·Ͱ
 ϓϩμΫγϣϯίʔυΛॻ͔ͳ͍ 2. ࣦഊͤ͞Δ໨తҎ֎ͰςετΛॻ͔ͳ͍ 3. ࣦഊ͢Δςετ͕੒ޭ͢Δ·Ͱ
 ଞͷϓϩμΫγϣϯίʔυΛॻ͔ͳ͍

7. Red Green Refactoring TDDͷ αΠΫϧ

8. ࣮ફͰ͖ͯΔ? •͸͡ΊʹςετΛॻ͘บ͸Ͱ͖ͯΔ? •͏·͘αΠΫϧΛ·ΘͤͯΔ? •ςετॻ͘ͷ೉͍͠෦෼΋ॻ͚Δ? •Fake It / Obvious Implementation /

   Triangulation ͏·͘Ͱ͖ͯΔ?

9. ࿅श

10. Coding Kata

11. Coding Kata ۭखͷܕʹͳͧΒ͑ͨɺϓϩάϥϛϯάͷ࿅शํ๏ɻ ! جຊతͳ՝୊Λ܁Γฦ͠࿅श͢Δ͜ͱͰɺ TDDͷΑ͏ͳن཯΍ɺΤσΟλͷૢ࡞ํ๏ɺ Α͋͘Δ໰୊ͷղܾखॱͳͲΛମʹછΈࠐ·ͤΔɻ

12. Ϙ΢ϦϯάήʔϜ ‣10ϑϨʔϜ x ࠷େ 2 ౤ͯ͠ 10 ݸͷϐϯΛ౗͢ ‣ετϥΠΫ Ϙʔφε:

    ࣍ͷ 2 ౤ͷ౗ͨ͠ϐϯ਺ ‣εϖΞ Ϙʔφε: ࣍ͷ 1 ౤ͷ౗ͨ͠ϐϯ਺ ‣10ϑϨʔϜ໨ εϖΞ͔ετϥΠΫ͕ग़ͨΒ࠷େ3౤Ͱ͖Δ

13. ཁٻ࢓༷ •roll(pins: Int) ϓϨΠϠʔ͕ϘʔϧΛ౤͛ͨ࣌ʹݺ͹ΕΔɻ
 Ҿ਺͸౗ͨ͠ϐϯ਺ɻ •score(): Int ͜ͷήʔϜͷείΞΛฦ͢ Game +

    roll(pins: Int) + score(): Int

14. ࣮ԋ Scala/spec2/IntelliJ/sbt

15. ·ͱΊ • TDD͸ϓϩͷश׳ • Coding KataͰ࿅शͯ͠਎ʹ͚ͭΑ͏ ࣮ࡍ͏·͍ͬͯ͘Δ? - TDDͷϦζϜ͕਎ʹͭ͘ -

    ։ൃ؀ڥྑ͘ͳΔ - ϓϩάϥϛϯάݴޠͷػೳΛֶ΂Δ

16. ࢀߟจݙ • ΞδϟΠϧιϑτ΢ΣΞ։ൃͷԞٛ
 (ISBN: 978-4797347784) • ε͸εϖοΫͷε ʲୈ 1 ճʳ

    RSpec ͷ֓ཁ ͱɺRSpec on Rails (Ϟσϧฤ)
 ( http://magazine.rubyist.net/?0021-Rspec ) • ͜ͷൃදͷαϯϓϧίʔυ ( https:// github.com/hakobe/coding-kata-bowling )