eZ\Bundle\EzPublishRestBundle\DependencyInjection\Compiler\InputParserPass::process PHP Method

    public function process(ContainerBuilder $container)
    {
        if (!$container->hasDefinition('ezpublish_rest.input.parsing_dispatcher')) {
            return;
        }
        $definition = $container->getDefinition('ezpublish_rest.input.parsing_dispatcher');
        foreach ($container->findTaggedServiceIds('ezpublish_rest.input.parser') as $id => $attributes) {
            foreach ($attributes as $attribute) {
                if (!isset($attribute['mediaType'])) {
                    throw new \LogicException('ezpublish_rest.input.parser service tag needs a "mediaType" attribute to identify the input parser. None given.');
                }
                $definition->addMethodCall('addParser', array($attribute['mediaType'], new Reference($id)));
            }
        }
    }

 public function testProcess()
 {
     $visitorDefinition = new Definition();
     $visitorDefinition->addTag('ezpublish_rest.input.parser', array('mediaType' => 'application/vnd.ez.api.UnitTest'));
     $containerBuilder = new ContainerBuilder();
     $containerBuilder->addDefinitions(array('ezpublish_rest.input.parsing_dispatcher' => new Definition(), 'ezpublish_rest.input.parser.UnitTest' => $visitorDefinition));
     $compilerPass = new InputParserPass();
     $compilerPass->process($containerBuilder);
     $dispatcherMethodCalls = $containerBuilder->getDefinition('ezpublish_rest.input.parsing_dispatcher')->getMethodCalls();
     self::assertTrue(isset($dispatcherMethodCalls[0][0]), "Failed asserting that dispatcher has a method call");
     self::assertEquals('addParser', $dispatcherMethodCalls[0][0], "Failed asserting that called method is 'addParser'");
     self::assertInstanceOf('Symfony\\Component\\DependencyInjection\\Reference', $dispatcherMethodCalls[0][1][1], "Failed asserting that method call is to a Reference object");
     self::assertEquals('ezpublish_rest.input.parser.unittest', $dispatcherMethodCalls[0][1][1]->__toString(), "Failed asserting that Referenced service is 'ezpublish_rest.input.parser.UnitTest'");
 }