This article describes a way of implementing Strategy design pattern using a database-based runtime configuration. The approach allows to dynamically (re)configure class behavior without requiring code-based rearrangements.

This article describes a TDD (Test Driven Development) approach to implement a Finite State Machine (FSM) using PHP+Laravel. However, such method is general and could be used in the programming language of your choice.

Learn how to send a test email from a Laravel app

This tutorial describes a TDD approach to refactor code to Replace Constructors with Creation Methods pattern. Starting from working code and some test, refactoring steps are applied to obtain cleaner code