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)
1
Part 1 – Technical Background and Setup
6
Part 2 – Implementing Test-Driven Development in a PHP Project
11
Part 3 – Deployment Automation and Monitoring

Classes versus objects

A PHP class is a file that contains codes. Your class is a file that physically exists on your drive. If you turn your computer off and turn it on again, the class file is still there. The code it contains is a template to create an object during execution. The class file can contain properties and behaviors. The properties will be able to hold data in memory once the class has been instantiated. The behaviors will be handled by methods or functions. You can use the accessors and mutator methods to change the values of a class’s properties.

Dog.php class file

<?php
namespace Animal;
class Dog
{
    public function returnSound(): string
    {
        return "Bark";
    }
}

The preceding example class is a PHP file containing the namespace declaration, the class name, and a single method or function called returnSound(), which returns...