public function testThatCheckersCanBeMissing()
{
$container = $this->getMockBuilder('Symfony\\Component\\DependencyInjection\\ContainerBuilder')->setMethods(array('findTaggedServiceIds'))->getMock();
$container->expects($this->atLeastOnce())->method('findTaggedServiceIds')->will($this->returnValue(array()));
$pass = new ConfigCachePass();
$pass->process($container);
}