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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?
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Shintani Teppei
June 08, 2020
Programming
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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?
Shintani Teppei
June 08, 2020
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Transcript
©2020 Wantedly, Inc. ͲΜͳͱ͖ʹςετΛॻ͍ͨํ͕͍͍ͷ͔ Jun 3, 2020 - Teppei Shintani
@euglena1215 దͳྔͷςετΛॻͨ͘Ίʹ͕ࣗؾΛ͚͍ͭͯΔ͜ͱ ࣾһݚम 2020
©2020 Wantedly, Inc. 5FQQFJ4IJOUBOJ !FVHMFOB w "VUI4RVBE1SFNJVN4RVBE w ৽ଔ w
3VCZ͕͖ ࣗݾհ
©2020 Wantedly, Inc. దͳྔͷςετ
©2020 Wantedly, Inc. ࠓͷΰʔϧ 1VMM3FRVFTUΛ࡞ͬͨͱ͖ʹ దͳྔͷςετΛॻ͚͍ͯΔ͔ ڳʹखΛͯͯߟ͑Δ͜ͱ͕Ͱ͖Δ ͕ࣗߟ͍͑ͯΔ͜ͱΛݴޠԽͯ͠ΈͨͷͰհ͠·͢
©2020 Wantedly, Inc. ͢͜ͱ͞ͳ͍͜ͱ w ͢͜ͱ • ͲΜͳͱ͖ʹςετΛॻ͘ඞཁੑ͕ߴ͍ͷ͔ • ͲΜͳͱ͖ʹςετΛॻ͘ඞཁੑ͕͍ͷ͔
w ͞ͳ͍͜ͱ • ମܥతͳςετख๏ςετͷྨ → ͕ࣗ͋·ΓΒͳ͍ʢ@qnighy ͕ৄͦ͠͏(͠ΒΜ͚Ͳ)ʣ • TDDͳͲͷಛఆͷϓϩάϥϜ։ൃख๏ → ͕ࣗ͋·ΓΒͳ͍ʢ@stomk ͕ৄͦ͠͏(͠ΒΜ͚Ͳ)ʣ
©2020 Wantedly, Inc. ߦͰ·ͱΊΔͱ ςετίʔυͷඞཁੑ มߋසʷ։ൃਓʷॏཁ
©2020 Wantedly, Inc. ςετίʔυͷඞཁੑมߋසº։ൃਓºॏཁ 1. 1ʹ1มߋ͞ΕΔՕॴͳͷ͔ɺ1ʹ1มߋ͞ΕΔՕॴͳͷ͔ 2. มߋස͕͚Εखಈςετͷํ͕ίεύྑ͍Մೳੑ͋Δ 1. ࣗಈςετ
ϥϯχϯάίετ / Πχγϟϧίετ ߴ 2. खಈςετ ϥϯχϯάίετ ߴ / Πχγϟϧίετ w FY JOJUJBMJ[FS CBUDIpMF มߋස͕ߴ͚Εߴ͍΄Ͳ ςετίʔυͷඞཁੑߴ·Δ
©2020 Wantedly, Inc. ςετίʔυͷඞཁੑมߋසº։ൃਓºॏཁ 1. ͦͷϑΝΠϧΛมߋ͢ΔਓͰͳͯ͘ɺͦͷมߋӨڹΛड͚Δ։ൃऀͷਓ 1. app/models/user.rb Λมߋͨ͠Βbackend։ൃͯ͠Δ΄΅શһ͕ӨڹΛड͚ΔՄೳੑ͕ ߴ͍
2. view ΑΓ controller, controller ΑΓ model ͷํ͕ӨڹΛड͚Δ։ൃऀͷਓଟ͘ͳ Γ͕ͪ 3. ։ൃਓ͕1,2ਓͰ͋Ε͋ΔఔѨჴͷݺٵͰ͍͚ͨΓ͢Δ 1. ʮ͜͜Λมߋ͢Δͬͯ͜ͱ͋ͬͪಉ࣌ʹมߋ͠ͳ͍ͱ͜ͷέʔεͰյΕΔͷͰʁʯ 2. ։ൃਓ͕ଟ͘ͳͬͯ͘ΔͱѨჴͷݺٵ͔ͳΓࠔ 3. Χ݄ޙͷࣗผਓͰ͋Δ͜ͱʹҙ
©2020 Wantedly, Inc. ςετίʔυͷඞཁੑมߋසº։ൃਓºॏཁ 1. ͕ͦ͜յΕͨΒͲͷ͘Β͍ࠔΔ͔ 1. Α͋͘ΔࢦඪɿӨڹϢʔβʔɺച্ 1. ࢀߟɿฏͷதʹ1࣌ؒαʔϏε͕μϯ͢ΔͱXXXXສԁఔͷଛࣦ
͜͜ʹ issue URL ͕ೖΔ 2. ͜ΕΒΛ͋ΔఔΧόʔ͍ͯ͠Δͷ͕ SLI/SLO ର endpoint Ұཡ ͜͜ʹ issue URL ͕ೖΔ 1. ͜ͷ endpoint ͕յΕΔՄೳੑͷ͋Δมߋॏཁ͕ߴ͍ͱࢥͬͯࠩ͠ࢧ͑ͳͦ͞͏
©2020 Wantedly, Inc. ςετΛॻ͔ͳ͍͍ͯ͘έʔεʜʁ ྫ͑ϋοΧιϯ มߋසˠϋοΧιϯऴΘͬͨΒϙΠࣺͯͳͷͰ ΄΅
։ൃਓˠdਓ͘Β͍ʁѨჴͷݺٵͰ௨͡Δ ॏཁˠൃදͰόάΒͳ͚Ε0,ɺച্ͳ͍ͷ Ͱۚમμϝʔδ
©2020 Wantedly, Inc. ͏Δͤ͑ɺͪ͜ͱΒϦϦʔεલͳΜ͡Όʂ ࠷খݶͷਖ਼ৗܥͷΈςετॻ͘ Γςετέʔε͚ͩॻ͍ͯ AQFOEJOHlޙͤͨA 1.
࣮ऀҎ֎͕ςετॻ͘ͱ͖ͷSTEP 1. ͲΜͳςετέʔε͕ଘࡏ͢Δͷ͔Ѳ͢Δ ←͕͜͜লུͰ͖Δ͚ͩͰ͔ͳΓخ͍͠ 2. ςετΛॻ͘
©2020 Wantedly, Inc. ߦͰ·ͱΊΔͱ ςετίʔυͷඞཁੑ มߋසʷ։ൃਓʷॏཁ
©2020 Wantedly, Inc. ࠓͷΰʔϧ 1VMM3FRVFTUΛ࡞ͬͨͱ͖ʹ దͳྔͷςετΛॻ͚͍ͯΔ͔ ڳʹखΛͯͯߟ͑Δ͜ͱ͕Ͱ͖Δ