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Kotlin Fest Reject Conference 2 0 2 2 


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Naomichi Agata 2018 . 0 4 ~ 202 1 . 0 3 Wantedly, Inc. , , 2021 . 0 4 ~ Henry, Inc. @agatan / @agatan_

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:

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Henry .. ( ) .. 🙈

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Frontend: React + TypeScript Server-Side: gRPC + Kotlin Kotest (https://kotest.io/) MockK (https://mockk.io/) : Henry 2022.08.25

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ཁٻ࢓༷ͷ੔ཧ ։ൃ ड͚ೖΕςετ Engineer Domain Expert Domain Expert

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ཁٻ࢓༷ͷ੔ཧ ։ൃ ड͚ೖΕςετ Engineer Domain Expert Domain Expert 
 
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ཁٻ࢓༷ͷ੔ཧ ։ൃ ड͚ೖΕςετ Engineer Domain Expert Domain Expert :

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ཁٻ࢓༷ͷ੔ཧ ։ൃ ड͚ೖΕςετ Engineer Domain Expert Domain Expert UI 
 
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ͭͳ͗͜ΜͰΈΔͱ໰୊͕ 
 ͍ͬͺ͍ग़ͯ͘Δʂ ࣮૷͸͞Ε͍͚ͯͨͲϚελʔ͕ ਖ਼͘͠ͳͬͨʂ ૝૾΋͍ͯ͠ͳ͔ͬͨͱ͜ΖͰ 
 σάϨ͕ʂ

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: : Kotlin / Kotest Tips 
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:

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: assertion context, describe, it withClue, asClue

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: / mock ⾒

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: ⾒ Kotlin

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: ⾒

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: API gRPC proto gRPC proto API assertion

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ཁٻ࢓༷ͷ੔ཧ ։ൃ ड͚ೖΕςετ Engineer Domain Expert Domain Expert 


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IUUQTTQFBLFSEFDLDPNOJIPOCVTPOFYBNQMFNBQQJOH ࣄྫ͔ΒֶͿ࣮ྫϚοϐϯάͷ΍Γํ

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ཁٻ࢓༷ͷ੔ཧ ։ൃ ड͚ೖΕςετ Engineer Domain Expert Domain Expert DE 
 Engineer 
 


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& expectation X UI 


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gRPC Interceptor ?

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API 
 API ⾒ 


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