Architecture & Testing - Android developer's mantra (Codemotion Spain 2015)

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@Guardiola31337 @kinisoftware ARCHITECTURE & TESTING Android developer’s mantra MADRID - NOV 27-28 - 2015

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What is CLEAN ARCHITECTURE? MAINTAINABLE

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What is CLEAN ARCHITECTURE? MAINTAINABLE TESTABLE

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What is CLEAN ARCHITECTURE? TESTABLE MAINTAINABLE LOW TECHNICAL DEBT

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What is CLEAN ARCHITECTURE?

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The BASICS S O L I D

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The BASICS Single Responsibility O L I D

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The BASICS Single Responsibility L I D Open/Close

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The BASICS Single Responsibility I D Open/Close Liskov Substitution

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The BASICS Single Responsibility D Open/Close Liskov Substitution Interface Segregation

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The BASICS Single Responsibility Open/Close Liskov Substitution Interface Segregation Dependency Inversion

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Architecture

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DIFFERENT names, SAME philosophy Achieve a high-level SEPARATION of CONCERNS by LAYERING

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BENEFITS INDEPENDENT of FRAMEWORKS

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TESTABLE INDEPENDENT of FRAMEWORKS BENEFITS

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TESTABLE EASY to UNDERSTAND INDEPENDENT of FRAMEWORKS BENEFITS

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Hexagonal

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What is HEXAGONAL Architecture? "Allow an application to equally be driven by users, programs, automated test or batch scripts, and to be developed and tested in isolation from its eventual run-time devices and databases". - Alistair Cockburn

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PORTS What is HEXAGONAL Architecture?

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PORTS ADAPTERS What is HEXAGONAL Architecture?

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Business Logic Events adapter In-memory events adapter Database adapter In-memory database adapter EVENTS PORT DATABASE PORT What is HEXAGONAL Architecture?

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The DEPENDENCY rule Dependencies

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ADVANTAGES Ports and Adapters are INTERCHANGEABLE

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ADVANTAGES DEFER DECISIONS until the very END Ports and Adapters are INTERCHANGEABLE

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ADVANTAGES DEFER DECISIONS until the very END IMPLEMENT features FASTER Ports and Adapters are INTERCHANGEABLE

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TESTING

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Types of Tests UNIT

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Types of Tests UNIT INTEGRATION

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Types of Tests UNIT INTEGRATION E2E

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ACKNOWLEDGEMENTS … @artolamola @ggalmazor @47deg

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REFERENCES Hexagonal Architecture - Fideloper (http://ﬁdeloper.com/hexagonal-architecture) Hexagonal architecture - Alistair Cockburn (http://alistair.cockburn.us/Hexagonal+architecture) The Clean Architecture - Uncle Bob (https://blog.8thlight.com/uncle-bob/2012/08/13/the-clean- architecture.html) What is Hexagonal Architecture? - Philip Brown (http://culttt.com/2014/12/31/hexagonal- architecture/) Ports-And-Adapters / Hexagonal Architecture (http://www.dossier-andreas.net/ software_architecture/ports_and_adapters.html)