This is an PHPUnit code snippet that we used for our blog post https://rubygarage.org/blog/ruby-on-rails-and-symfony-comparison at RubyGarage. It demonstrates how to create a namespace with PHPUnit. This code snippet was taken from the Symfony main website.

how_to_create_a_namespace_with_phpunit.php

<?php
// tests/AppBundle/Util/CalculatorTest.php
namespace Tests\AppBundle\Util;

use AppBundle\Util\Calculator;

class CalculatorTest extends \PHPUnit_Framework_TestCase
{
  public function testAdd()
  {
    $calc = new Calculator();
    $result = $calc->add(30, 12);
    //assert that your calculator added the numbers correctly!
    $this->assertEquals(42, $result);
  }
}
?>