Upgrade to Pro — share decks privately, control downloads, hide ads and more …

どんなときにテストを書いた方がいいのか/When should you write a test?

Avatar for Shintani Teppei Shintani Teppei
June 08, 2020
Programming
1
520

どんなときにテストを書いた方がいいのか/When should you write a test?

Avatar for Shintani Teppei

Shintani Teppei

June 08, 2020
Tweet

More Decks by Shintani Teppei

See All by Shintani Teppei
allow_retry と Arel.sql / allow_retry and Arel.sql
Avatar for Shintani Teppei euglena1215
1
200
AIと”コードの評価関数”を共有する / Share the "code evaluation function" with AI
Avatar for Shintani Teppei euglena1215
1
220
ISUCONで型をつける
Avatar for Shintani Teppei euglena1215
1
130
3年でバックエンドエンジニアが5倍に増えても破綻しなかったアーキテクチャ そして、これから / Software architecture that scales even with a 5x increase in backend engineers in 3 years
Avatar for Shintani Teppei euglena1215
11
5.3k
モジュラモノリス、その前に / Modular monolith, before that
Avatar for Shintani Teppei euglena1215
8
1.1k
いつか使える ObjectSpace / Maybe useful ObjectSpace
Avatar for Shintani Teppei euglena1215
2
230
rbs-inlineを導入してYARDからRBSに移行する
Avatar for Shintani Teppei euglena1215
1
840
Ruby の型に関する活動をやっている話 / Activities related to Ruby types
Avatar for Shintani Teppei euglena1215
3
400
そろそろ理解する includes / Understanding includes
Avatar for Shintani Teppei euglena1215
1
950

Other Decks in Programming

See All in Programming
大規模アプリのDIフレームワーク刷新戦略 ～過去最大規模の並行開発を止めずにアプリ全体に導入するまで～
Avatar for GO Inc. dev mot_techtalk
1
460
CSC305 Lecture 05
Avatar for Javier Gonzalez-Sanchez javiergs
PRO
0
220
Go言語の特性を活かした公式MCP SDKの設計
Avatar for hond hond0413
1
240
釣り地図SNSにおける有料機能の実装
Avatar for nokonoko1203 nokonoko1203
0
130
PHPに関数型の魂を宿す〜PHP 8.5 で実現する堅牢なコードとは〜 #phpcon_hiroshima / phpcon-hiroshima-2025
Avatar for shogogg shogogg
1
260
その面倒な作業、「Dart」にやらせませんか？ Flutter開発者のための業務効率化
Avatar for YomEngine yordgenome03
1
130
なぜあの開発者はDevRelに伴走し続けるのか / Why Does That Developer Keep Running Alongside DevRel?
Avatar for nrs nrslib
3
410
Software Architecture
Avatar for Henning Schwentner hschwentner
6
2.3k
タスクの特性や不確実性に応じた最適な作業スタイルの選択（ペアプロ・モブプロ・ソロプロ）と実践 / Optimal Work Style Selection: Pair, Mob, or Solo Programming.
Avatar for yuki honyanya
3
180
「ちょっと古いから」って避けてた技術書、今だからこそ読もう
Avatar for もっち mottyzzz
11
6.9k
Le côté obscur des IA génératives
Avatar for Pascal Le Merrer pascallemerrer
0
150
iOSエンジニア向けの英語学習アプリを作る！
Avatar for yukawashouhei yukawashouhei
0
200

Featured

See All Featured
Bash Introduction
Avatar for André Augusto Costa Santos 62gerente
615
210k
JavaScript: Past, Present, and Future - NDC Porto 2020
Avatar for David Neal reverentgeek
52
5.6k
10 Git Anti Patterns You Should be Aware of
Avatar for Lemi Orhan Ergin lemiorhan
PRO
657
61k
How to Create Impact in a Changing Tech Landscape [PerfNow 2023]
Avatar for Tammy Everts tammyeverts
55
3k
XXLCSS - How to scale CSS and keep your sanity
Avatar for Zaharenia Atzitzikaki sugarenia
248
1.3M
Creating an realtime collaboration tool: Agile Flush - .NET Oxford
Avatar for Marc Duiker marcduiker
34
2.3k
What’s in a name? Adding method to the madness
Avatar for Product Marketing Alliance productmarketing
PRO
24
3.7k
Understanding Cognitive Biases in Performance Measurement
Avatar for Philip Tellis bluesmoon
31
2.7k
KATA
Avatar for Megan Lloyd mclloyd
PRO
32
15k
Visualization
Avatar for Eitan Lees eitanlees
149
16k
The Invisible Side of Design
Avatar for Vitaly Friedman smashingmag
302
51k
It's Worth the Effort
Avatar for 3n 3n
187
28k

Transcript

  1. ©2020 Wantedly, Inc. ͲΜͳͱ͖ʹςετΛॻ͍ͨํ͕͍͍ͷ͔ Jun 3, 2020 - Teppei Shintani

    @euglena1215 ద੾ͳྔͷςετΛॻͨ͘Ίʹࣗ෼͕ؾΛ͚͍ͭͯΔ͜ͱ ࣾһݚम 2020

  2. ©2020 Wantedly, Inc. 5FQQFJ4IJOUBOJ !FVHMFOB w "VUI4RVBE1SFNJVN4RVBE w ৽ଔ೥໨ w

    3VCZ͕޷͖ ࣗݾ঺հ

  3. ©2020 Wantedly, Inc. ద੾ͳྔͷςετ

  4. ©2020 Wantedly, Inc. ࠓ೔ͷΰʔϧ 1VMM3FRVFTUΛ࡞ͬͨͱ͖ʹ ద੾ͳྔͷςετΛॻ͚͍ͯΔ͔ ڳʹखΛ౰ͯͯߟ͑Δ͜ͱ͕Ͱ͖Δ ࣗ෼͕ߟ͍͑ͯΔ͜ͱΛݴޠԽͯ͠ΈͨͷͰ঺հ͠·͢

  5. ©2020 Wantedly, Inc. ࿩͢͜ͱ࿩͞ͳ͍͜ͱ w ࿩͢͜ͱ • ͲΜͳͱ͖ʹςετΛॻ͘ඞཁੑ͕ߴ͍ͷ͔ • ͲΜͳͱ͖ʹςετΛॻ͘ඞཁੑ͕௿͍ͷ͔

    w ࿩͞ͳ͍͜ͱ • ମܥతͳςετख๏΍ςετͷ෼ྨ → ࣗ෼͕͋·Γ஌Βͳ͍ʢ@qnighy ͕ৄͦ͠͏(͠ΒΜ͚Ͳ)ʣ • TDDͳͲͷಛఆͷϓϩάϥϜ։ൃख๏ → ࣗ෼͕͋·Γ஌Βͳ͍ʢ@stomk ͕ৄͦ͠͏(͠ΒΜ͚Ͳ)ʣ

  6. ©2020 Wantedly, Inc. ߦͰ·ͱΊΔͱ ςετίʔυͷඞཁੑ มߋස౓ʷ։ൃਓ਺ʷॏཁ౓

  7. ©2020 Wantedly, Inc. ςετίʔυͷඞཁੑมߋස౓º։ൃਓ਺ºॏཁ౓ 1. 1೔ʹ1౓มߋ͞ΕΔՕॴͳͷ͔ɺ1೥ʹ1౓มߋ͞ΕΔՕॴͳͷ͔ 2. มߋස౓͕௿͚Ε͹खಈςετͷํ͕ίεύྑ͍Մೳੑ΋͋Δ 1. ࣗಈςετ

    ϥϯχϯάίετ ௿ / Πχγϟϧίετ ߴ 2. खಈςετ ϥϯχϯάίετ ߴ / Πχγϟϧίετ ௿ w FY JOJUJBMJ[FS CBUDIpMF มߋස౓͕ߴ͚Ε͹ߴ͍΄Ͳ ςετίʔυͷඞཁੑ΋ߴ·Δ

  8. ©2020 Wantedly, Inc. ςετίʔυͷඞཁੑมߋස౓º։ൃਓ਺ºॏཁ౓ 1. ͦͷϑΝΠϧΛมߋ͢Δਓ਺Ͱ͸ͳͯ͘ɺͦͷมߋӨڹΛड͚Δ։ൃऀͷਓ਺ 1. app/models/user.rb Λมߋͨ͠Βbackend։ൃͯ͠Δ΄΅શһ͕ӨڹΛड͚ΔՄೳੑ͕ ߴ͍

    2. view ΑΓ΋ controller, controller ΑΓ΋ model ͷํ͕ӨڹΛड͚Δ։ൃऀͷਓ਺͸ଟ͘ͳ Γ͕ͪ 3. ։ൃਓ਺͕1,2ਓͰ͋Ε͹͋Δఔ౓ѨჴͷݺٵͰ͍͚ͨΓ͢Δ 1. ʮ͜͜Λมߋ͢Δͬͯ͜ͱ͸͋ͬͪ΋ಉ࣌ʹมߋ͠ͳ͍ͱ͜ͷέʔεͰյΕΔͷͰ͸ʁʯ 2. ։ൃਓ਺͕ଟ͘ͳͬͯ͘ΔͱѨჴͷݺٵ͸͔ͳΓࠔ೉ 3. ਺Χ݄ޙͷࣗ෼͸ผਓͰ͋Δ͜ͱʹ஫ҙ

  9. ©2020 Wantedly, Inc. ςετίʔυͷඞཁੑมߋස౓º։ൃਓ਺ºॏཁ౓ 1. ͕ͦ͜յΕͨΒͲͷ͘Β͍ࠔΔ͔ 1. Α͋͘ΔࢦඪɿӨڹϢʔβʔ਺ɺച্ 1. ࢀߟɿฏ೔ͷ೔தʹ1࣌ؒαʔϏε͕μ΢ϯ͢ΔͱXXXXສԁఔ౓ͷଛࣦ

    ͜͜ʹ issue URL ͕ೖΔ 2. ͜ΕΒΛ͋Δఔ౓Χόʔ͍ͯ͠Δͷ͕ SLI/SLO ର৅ endpoint Ұཡ ͜͜ʹ issue URL ͕ೖΔ 1. ͜ͷ endpoint ͕յΕΔՄೳੑͷ͋Δมߋ͸ॏཁ౓͕ߴ͍ͱࢥͬͯࠩ͠ࢧ͑ͳͦ͞͏

  10. ©2020 Wantedly, Inc. ςετΛॻ͔ͳ͍͍ͯ͘έʔε͸ʜʁ  ྫ͑͹ϋοΧιϯ  มߋස౓ˠϋοΧιϯऴΘͬͨΒϙΠࣺͯͳͷͰ ΄΅ 

    ։ൃਓ਺ˠdਓ͘Β͍ʁѨჴͷݺٵͰ௨͡Δ  ॏཁ౓ˠൃදͰόάΒͳ͚Ε͹0,ɺച্ͳ͍ͷ Ͱۚમμϝʔδ΋

  11. ©2020 Wantedly, Inc. ͏Δͤ͑ɺͪ͜ͱΒϦϦʔεલͳΜ͡Όʂ  ࠷খݶͷਖ਼ৗܥͷΈςετॻ͘  ࢒Γ͸ςετέʔε͚ͩॻ͍ͯ AQFOEJOHlޙ͸೚ͤͨA 1.

    ࣮૷ऀҎ֎͕ςετॻ͘ͱ͖ͷSTEP 1. ͲΜͳςετέʔε͕ଘࡏ͢Δͷ͔೺Ѳ͢Δ ←͕͜͜লུͰ͖Δ͚ͩͰ΋͔ͳΓخ͍͠ 2. ςετΛॻ͘

  12. ©2020 Wantedly, Inc. ߦͰ·ͱΊΔͱ ςετίʔυͷඞཁੑ มߋස౓ʷ։ൃਓ਺ʷॏཁ౓

  13. ©2020 Wantedly, Inc. ࠓ೔ͷΰʔϧ 1VMM3FRVFTUΛ࡞ͬͨͱ͖ʹ ద੾ͳྔͷςετΛॻ͚͍ͯΔ͔ ڳʹखΛ౰ͯͯߟ͑Δ͜ͱ͕Ͱ͖Δ