Behat Layered Cake - KaunasPHP

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Behat Layered Cake KaunasPHP edition Kaunas, 14 Jan 2015

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Labas vakaras!

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@super_marek Marek Matulka

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at SensioLabsUK Software Engineer

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part of Inviqa Group SensioLabsUK

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a tool that makes BDD possible

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With Behat you can...

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With Behat you can... ...write human-readable stories that describe behaviour of your application.

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With Behat you can... ...automate testing of your application’s behaviour with human-readable examples.

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With Behat you can... ...change behaviour of your application with confidence.

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Typical dev stack - Vagrant VM - Symfony framework - mysql or mongodb storage - Linux/OS X host - scrutiniser-ci

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A project

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That’s sloooow!

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Should I get a faster computer?

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What is the problem?

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Where’s the problem? it takes too much time

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Where’s the problem? Guest VM

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Where’s the problem? MySQL

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Where’s the problem? MySQL inside Guest VM

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Let’s try it on the host!

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A project

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(63 scenarios in 320 steps) vs

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But!

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What if... my project grows and I’ll have 3000+ steps?

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What if I had 3000+ steps? 300 steps took over 10 minutes 3000 steps will take over 100 minutes! (inside guest VM)

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What if I had 3000+ steps? 300 steps took over 1 minute 3000 steps will take over 10 minutes! (on host)

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How to make it faster?

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Disable xdebug extension 30-40% improvement

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Replace slow modules with... Replace slow DB with fast in-memory or file-system persistent storage

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Example Controller

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Example Controller

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(short introduction to) Layered Architecture

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Layered Architecture User Interface Application Domain Infrastructure

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Dependency Inversion “High level modules should not depend on lower level implementation” – Good old Uncle Bob

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Dependency Inversion Policy Layer Policy Service Mechanism Layer Mechanism Service Utility Layer

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(short introduction to) Hexagonal Architecture

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Hexagonal Architecture Browser Logs Database Auth Domain

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Hexagonal Architecture UI Adapter Log Adapter Data Storage Adapter External Data Adapter Domain

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Hexagonal Architecture UI Adapter Log Adapter Data Storage Adapter Domain UI client port log adapter port persistence layer port Data Provider Adapter data provider port

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Hexagonal Architecture UI Adapter Log Adapter Test Adapter Test Adapter Data Storage Adapter Test Adapter Domain External Data Adapter Test Adapter

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How to do that?

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Repository Interface Acme\Learning\Conference Acme\Learning\ConferenceRepository

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Repository Interface Acme\Learning\Conference Acme\Learning\ConferenceRepository Domain Port

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Describe Communication

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Your controller

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Spec Controller to use Interface

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Spec Controller to use Interface Port

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Implement your repository

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Implement your repository Port Adapter

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Add another Adapter

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Implement your repository

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Implement your repository Port Adapter

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Configure the Test env

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Prepare Test Infrastructure config_test.yml:

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Configure dependency injection

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How fast can it be?

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MySql Inside Guest VM

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MySql On Host

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Mocked Storage Inside Guest VM

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Mocked Storage On Host

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Things to remember

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Hexagonal Architecture UI Adapter Log Adapter Test Adapter Test Adapter Data Storage Adapter Test Adapter Domain External Data Adapter Test Adapter