Book Image

Test-Driven Development with PHP 8

By : Rainier Sarabia
Book Image

Test-Driven Development with PHP 8

By: Rainier Sarabia

Overview of this book

PHP web developers end up building complex enterprise projects without prior experience in test-driven and behavior-driven development which results in software that’s complex and difficult to maintain. This step-by-step guide helps you manage the complexities of large-scale web applications. It takes you through the processes of working on a project, starting from understanding business requirements and translating them into actual maintainable software, to automated deployments. You’ll learn how to break down business requirements into workable and actionable lists using Jira. Using those organized lists of business requirements, you’ll understand how to implement behavior-driven development (BDD) and test-driven development (TDD) to start writing maintainable PHP code. You’ll explore how to use the automated tests to help you stop introducing regressions to an application each time you release code by using continuous integration. By the end of this book, you’ll have learned how to start a PHP project, break down the requirements, build test scenarios and automated tests, and write more testable and maintainable PHP code. By learning these processes, you’ll be able to develop more maintainable, and reliable enterprise PHP applications.
Table of Contents (17 chapters)
Part 1 – Technical Background and Setup
Part 2 – Implementing Test-Driven Development in a PHP Project
Part 3 – Deployment Automation and Monitoring

Integration test example

In this section, we will try to do some calculations and then try to store the result in the database. We will create a database called coffee and try to create a program that simply calculates the sum of how many coffee cups we had in a day, and then persist it. After persisting, we need to be able to verify whether the persisted sum is correct.

Installing Doctrine with Symfony 6

Since we are using the Symfony framework, which works well with Doctrine, let’s just use Doctrine to persist and retrieve data from our database. There are a lot of ways to persist and retrieve data from a database, but for this project, we’ll just focus on using Doctrine to simplify our examples so that we can focus on testing rather than reinventing the wheel. Doctrine is an ORM. You can read more about Doctrine at

Let’s install Doctrine by running the following commands:

/var/www/html/symfony# composer require symfony...