乱数をテストするときの心構え

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1. ཚ਺Λςετ͢Δͱ͖ ͷ৺ߏ͑ @yamacraft

2. profile • @yamacraft (Wataru Yamada) • LeadingMark, inc / team

   Y.G.E. • Mobile Application Engineer

3. ζϯυίΩϤγ ήʔϜ • ྫͷΞϨΛήʔϜԽͨ͠Ξ ϓϦ • Google Play Game ServiceରԠʂ

   • https://play.google.com/ store/apps/details? id=jp.yamaglo.yge.zundo kogame

4. ʮζϯorυίʯ෦෼ͷ ςετΛೖΕ͍ͨʂ

5. ʮζϯorυίʯͷ࢓༷ • ϘλϯλοϓͷλΠϛϯάͰZunDokoΫϥεΛੜ੒͢Δ • ZunDoko.idͰʮζϯʯͱʮυίʯΛ൑ผͯ͠σΟεϓϨΠʹग़ྗ • id͸ੜ੒࣌ʹϥϯμϜͰ0͔1͕୅ೖ͞ΕΔ • 0͔1͔͸50:50 •

   ʮ100ճZunDokoΫϥεΛੜ੒ͨ͠ͱ͖ʹid=0͕50ɺid=1͕ 50ʹͳΔ͔ʯ ← ͍΍ɺͪΐͬͱ……

6. ཚ਺ΛςετͰ͖Δͷʁ

7. ౴͑͸3೥લʹ௨ա͍ͯͨ͠ • ϥϯμϜʹৼΔ෣͏ػೳΛ JUnit ͢Δ #ौ୩Java ୈ̏ճ • https://speakerdeck.com/komiya_atsushi/ randamunizhen-ruwu-uji-neng-wo-junit-suru-number-

   shibui-gu-java-di-3hui • ԾઆݕఆʗΧΠೋ৐ݕఆ • BaseMatcherͷ֦ுΫϥε΋ • https://gist.github.com/komiya-atsushi/6736271

8. ͱ͍͏Θ͚Ͱಋೖ • https://gist.github.com/komiya-atsushi/6736271 ͸ͦͷ··AndroidͷJUnit4Ͱ΋ར༻Մೳ • Apache Commons MathΛ࢖͍ͬͯΔͷͰ testCompileͰ௥Ճ͓ͯ͘͠

9. ࢖ͬͯΈΔ • id=0ͱid=1ͷ਺͕50:50Ͱ༗ҙਫ४Λ5ˋʹઃఆͯ͠ ςετΛ࣮ࢪ

10. ஫ҙ఺ • ཚ਺ੜ੒ͷΞϧΰϦζϜ࣍ୈͰςετ௨աͨ͠Γ͠ͳ͔ͬ ͨΓ͢Δ • ࢼߦճ਺ͱ༗ҙਫ४ͷௐ੔ʹ͸஫ҙ • ଟ͗ͯ͢ςετʹ͕͔͔࣌ؒΔՄೳੑ • ༗ҙਫ४͕ΏΔ͗ͯ͢໰୊ʹؾ͔ͮͳ͍Մೳੑ

    • ʮཚ਺ͷ׬ᘳͳςετ͸Ͱ͖ͳ͍ʯͱ͍͏௿͍ҙࣝΛ΋ͬ ͯऔΓ૊΋͏

11. ͓͠·͍ • https://gist.github.com/komiya-atsushi/6736271 • ϥϯμϜʹৼΔ෣͏ػೳΛ JUnit ͢Δ • https://speakerdeck.com/komiya_atsushi/ randamunizhen-ruwu-uji-neng-wo-junit-suru-number-

    shibui-gu-java-di-3hui • org.hamcrest.BaseMatcherΛ֦ுͯ͠assertThat()Ͱ࢖͏ • http://d.hatena.ne.jp/ihiroky/20090916/1253076366