public function testProcess()
{
$container = new ContainerBuilder();
$container->setDefinition('contao.image.imagine', new Definition());
$pass = new AddImagineClassPass();
$pass->process($container);
$this->assertContains($container->getDefinition('contao.image.imagine')->getClass(), ['Imagine\\Gd\\Imagine', 'Imagine\\Gmagick\\Imagine', 'Imagine\\Imagick\\Imagine']);
}