test.php

<?php

/**
 * Created by Studio107.
 * Date: 13.06.13
 * Time: 16:31
 * All rights reserved.
 */

/**
 * Class Developer
 */
abstract class Developer
{
	/**
	 * @return boolean
	 */
	abstract public function mustKnowSeo();
}

/**
 * Class FrontendDeveloper.
 * js, html, css, sass|scss, haml, twig, jquery, coffee script, etc...
 */
class FrontendDeveloper extends Developer
{
	public function mustKnowSeo()
	{
		return true;
	}
}

/**
 * Class BackendDeveloper
 * python, php, mysql, pgsql, mongodb, redis, rabbitmq, etc...
 */
class BackendDeveloper extends Developer
{
	public function mustKnowSeo()
	{
		return false;
	}
}

/**
 * Class SeoBeginner
 * Unit test
 */
class SeoBeginner extends PHPUnit_Framework_TestCase
{
	public function testDevelopers()
	{
		$fr = new FrontendDeveloper();
		$this->assertTrue($fr->mustKnowSeo());

		$bk = new BackendDeveloper();
		$this->assertFalse($bk->mustKnowSeo());
	}
}