JCConf 2022 - Using ArchUnit to test your architecture

Using ArchUnit to test your architecture

Transcript

1. Using ArchUnit to
   test your architecture
   Matt Ho
   

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2. About me
   - Hi, I'm Matt 👋
   
   
   - 松凌科技 Architect / R&D
   
   
   - JCConf Speaker
   
   
   - methodho@gmail.com
   
   
   - https://github.com/shihyuho
   

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3. 放⼼, 這不是在講架構
   

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4. 本節在分享
   架構已經在那了 &&
   該如何確保在持續開發/維運的過程中, 應⽤程式仍
   然遵循著架構走
   

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5. https://www.archunit.org/
   

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6. ArchUnit Overview
   - 是⼀個測試套件, 整合了 JUnit 4, JUnit 5 等
   - 良好的 Fluent API
   - 容易延伸擴充
   - Apache-2.0 license
   

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7. 運作過程
   

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8. 起⼿式
   決定從哪邊開始匯入 bytecodes
   

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9. 起⼿式
   定義 Rules
   

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10. 起⼿式
    ArchUnit 執⾏得到結果
    

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11. 起⼿式 - Rule Pattern
    ArchRuleDefinition.GIVEN_OBJECTS
    .that(). PREDICATE
    .should(). CONDITION
    

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12. Controller 命名必須以 ‘Controller’ 結尾
    Class Naming
    

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13. Controller 命名必須以 ‘Controller’ 結尾
    Class Naming
    

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14. Class Naming
    Controller 命名必須以 ‘Controller’ 結尾
    

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15. Class Naming
    Data Access 命名必須以 ‘Dao’ 結尾
    

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16. Class Naming
    Data Access 命名必須以 ‘Dao’ 結尾
    

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17. Class Naming
    Data Access 命名必須以 ‘Dao’ 結尾
    

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18. Layered
    

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19. Layered
    

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20. Layered
    

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21. Layered
    

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22. Layered
    Architectures.layeredArchitecture()
    .layer(). PREDICATE
    .whereLayer(). CONDITION
    

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23. Layered
    定義 3 層 layer
    定義依賴關係
    

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24. General
    

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25. Freeze
    - 套⽤在舊的系統中, 超多條違規改不動 ;-(
    

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26. Freeze
    - 套⽤在舊的系統中, 超多條違規改不動 ;-(
    - 好吧, 那就現在開始的程式才檢查 :-)
    

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27. Freeze
    - 套⽤在舊的系統中, 超多條違規改不動 ;-(
    - 好吧, 那就現在開始的程式才檢查 :-)
    FreezingArchRule.freeze(
    ArchRuleDefinition.GIVEN_OBJECTS
    .that(). PREDICATE
    .should(). CONDITION
    )
    

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28. Freeze
    

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29. Code Smells
    

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30. Long Parameter List
    https://refactoring.guru/smells/long-parameter-list
    

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31. Large Class
    https://refactoring.guru/smells/large-class
    

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32. Long Method
    https://refactoring.guru/smells/long-method
    

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33. Recap
    - 起⼿式
    - Naming Rules
    - Layers Rules
    - General Rules
    - Freezing Rules
    - Custom Rules - Code Smells
    

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34. Thank you 🙌
    

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