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Using ArchUnit to test your architecture Matt Ho

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About me - Hi, I'm Matt 👋 - 松凌科技 Architect / R&D - JCConf Speaker - [email protected] - https://github.com/shihyuho

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放⼼, 這不是在講架構

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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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https://www.archunit.org/

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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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運作過程

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起⼿式 決定從哪邊開始匯入 bytecodes

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起⼿式 定義 Rules

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起⼿式 ArchUnit 執⾏得到結果

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

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Controller 命名必須以 ‘Controller’ 結尾 Class Naming

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Controller 命名必須以 ‘Controller’ 結尾 Class Naming

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Class Naming Controller 命名必須以 ‘Controller’ 結尾

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

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

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

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Layered

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Layered

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Layered

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Layered

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

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Layered 定義 3 層 layer 定義依賴關係

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General

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Freeze - 套⽤在舊的系統中, 超多條違規改不動 ;-(

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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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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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Freeze

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Code Smells

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

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

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

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

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Thank you 🙌