Domain-Driven Design in PHP

Testing Factories

You'll see a common pattern while writing your tests. This is because building Entities and complex Aggregates can be a very tedious and repetitive process. Inevitably, complexity and duplication will start creeping into your test suite. Consider the following Entity:

class Author{    private $username;    private $email ;    private $fullName;    public function __construct(        Username $aUsername,        FullName $aFullName,        Email $anEmail    ) {        $this->username = $aUsername;        $this->email = $anEmail ;        $this->fullName = $aFullName;    }    // ...}

Somewhere in your system, you'll end up with a test looking like this:

class MyTest extends PHPUnit_Framework_TestCase{    /**     * @test     */    public function itDoesSomething()    {        $author = new Author( new Username('johndoe'), ...