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

Abstraction in OOP

Abstraction in OOP is the concept of hiding complexities from the application, user, or developers. You can take a set of complex codes or instructions and wrap them inside a function. That function should use a verb for its name, which will make it easier to understand exactly what the complex instructions inside the function do.

For example, you can have a function called computeTotal($a, $b, $c) that contains logic or steps to compute the total based on the requirements. As a developer, you can just use the computeTotal method and not think about all the complex operations that are involved in the actual computation of the total, but if you need to fix a bug or understand what’s going on, then you can check what’s going on inside that computeTotal function:

public function computeTotal(int $a, int $b, int $c): int
    if ($c > 1) {
        $total = $a + $b;