Should write test codes while application codes

Slides for English LT on 2021/11/18

https://andpad.connpass.com/event/227868/

Transcript

1. ©iCARE Co., Ltd All rights reserved 1 Should write test codes while writing application codes iCARE Co.,Ltd Issei Nakamura
2. ©iCARE Co., Ltd All rights reserved About myself 2 • Issei Nakamura • Twitter ID: @ise_tang • iCARE • Manger of health checkup tech team • Serverside engineer • Ruby on Rails / Vue.js • Likes : Darts ◦ Count-up Best Score : 1061 
 

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5. ©iCARE Co., Ltd All rights reserved EM / TechLead Serverside Enginner Frontend Enginner Service Reliability Engineer QA Engineer UI Designer icare dev 検索 https://www.icare.jpn.com/dev/ We are hiring you!
6. ©iCARE Co., Ltd All rights reserved ここにタイトルが入ります 6 ここに本文が入ります ここに本文が入ります ここに本文が入ります 
 
 Main topic
7. ©iCARE Co., Ltd All rights reserved My failure story 😂 7 My implemetation API Sidekiq Sendgrid Worker class Report Mail Composer class Mailer Class Queing Data processing class Processing Result Report Mail
8. ©iCARE Co., Ltd All rights reserved My failure story 😂 8 My implemetation API Sidekiq Sendgrid Worker class Report Mail Composer class Mailer Class Queing Data processing class Processing Result Report Mail Buggy
9. ©iCARE Co., Ltd All rights reserved My failure story 😂 9 My implemetation API Sidekiq Sendgrid Worker class Report Mail Composer class Mailer Class Queing Data processing class Processing Result Report Mail Buggy Reload to update
10. ©iCARE Co., Ltd All rights reserved My failure story 😂 10 My implemetation API Sidekiq Sendgrid Worker class Report Mail Composer class Mailer Class Queing Data processing class Processing Result Report Mail Buggy Reload to update I lost a lot of times 😭
11. ©iCARE Co., Ltd All rights reserved The learning from this story 11 Hurry around 😂
12. ©iCARE Co., Ltd All rights reserved The benefits of Writing test codes while writing application codes 12 • Aware badness of design of the application code ◦ If you would think difficult to write test code, the design of the application code might be bad • Avoid writing wrong test code ◦ if you would write test code at first, you could avoid to write passing test code with wrong application code
13. ©iCARE Co., Ltd All rights reserved The benefits of Writing test codes while writing application codes 13 • Aware badness of design of the application code ◦ If you would think difficult to write test code, the design of the application code might be bad • Avoid writing wrong test code ◦ if you would write test code at first, you could avoid to write passing test code with wrong application code
14. ©iCARE Co., Ltd All rights reserved The benefits of Writing test codes while writing application codes 14 • Aware badness of design of the application code ◦ If you would think difficult to write test code, the design of the application code might be bad • Avoid writing wrong test code ◦ if you would write test code at first, you could avoid to write passing test code with wrong application code
15. ©iCARE Co., Ltd All rights reserved For more information 15 Read these books https://www.amazon.co.jp/dp/4274217884/ https://www.amazon.co.jp/dp/0321146530/
16. ©iCARE Co., Ltd All rights reserved ここにタイトルが入ります 16 ここに本文が入ります ここに本文が入ります ここに本文が入ります 
 
 Should write test codes while writing application codes! Thank you for listening!