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'),
            new FullName('John&apos...