DesignPatternsPHP/Structural/Adapter/Tests/AdapterTest.php

<?php

namespace DesignPatterns\Structural\Adapter\Tests;

use DesignPatterns\Structural\Adapter\EBookAdapter;
use DesignPatterns\Structural\Adapter\Kindle;
use DesignPatterns\Structural\Adapter\PaperBookInterface;
use DesignPatterns\Structural\Adapter\Book;

/**
 * AdapterTest shows the use of an adapted e-book that behave like a book
 * You don't have to change the code of your client
 */
class AdapterTest extends \PHPUnit_Framework_TestCase
{
    /**
     * @return array
     */
    public function getBook()
    {
        return array(
            array(new Book()),
            // we build a "wrapped" electronic book in the adapter
            array(new EBookAdapter(new Kindle()))
        );
    }

    /**
     * This client only knows paper book but surprise, surprise, the second book
     * is in fact an electronic book, but both work the same way
     *
     * @param PaperBookInterface $book
     *
     * @dataProvider getBook
     */
    public function testIAmAnOldClient(PaperBookInterface $book)
    {
        $book->open();
        $book->turnPage();
    }
}