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Commit 6278eca

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weaverryanweaverryan
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Adding a MicroKernel that has the special power where services (and extensions) can be configured direclty inside.
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‎src/Symfony/Component/DependencyInjection/Loader/ContainerBuilderAwareLoader.php

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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\DependencyInjection\Loader;
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use Symfony\Component\Config\Loader\LoaderInterface;
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use Symfony\Component\Config\Loader\LoaderResolverInterface;
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use Symfony\Component\DependencyInjection\ContainerBuilder;
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/**
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* Configuration loader that holds the ContainerBuilder inside.
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*
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* It can be useful to pass this to KernelInterface::registerContainerConfiguration()
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* instead of a normal Loader if that method will need the ContainerBuilder.
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*
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* @author Ryan Weaver <ryan@knpuniversity.com>
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*/
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class ContainerBuilderAwareLoader implements LoaderInterface
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{
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/**
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* @var ContainerBuilder
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*/
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private $containerBuilder;
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/**
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* @var LoaderInterface
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*/
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private $resourceLoader;
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public function __construct(ContainerBuilder $builder, LoaderInterface $resourceLoader)
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{
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$this->containerBuilder = $builder;
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$this->resourceLoader = $resourceLoader;
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}
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/**
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* @return ContainerBuilder
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*/
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public function getContainerBuilder()
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{
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return $this->containerBuilder;
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}
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/**
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* @return LoaderInterface
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*/
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public function getResourceLoader()
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{
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return $this->resourceLoader;
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}
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/**
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* @see {@inheritdoc}
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*/
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public function load($resource, $type = null)
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{
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return $this->resourceLoader->load($resource, $type);
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}
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/**
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* @see {@inheritdoc}
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*/
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public function supports($resource, $type = null)
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{
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return $this->resourceLoader->supports($resource, $type);
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}
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/**
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* @see {@inheritdoc}
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*/
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public function getResolver()
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{
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return $this->resourceLoader->getResolver();
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}
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/**
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* @see {@inheritdoc}
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*/
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public function setResolver(LoaderResolverInterface $resolver)
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{
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return $this->resourceLoader->setResolver($resolver);
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}
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}

‎src/Symfony/Component/HttpKernel/MicroKernel.php

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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\HttpKernel;
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use Symfony\Component\Config\Loader\Loader;
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use Symfony\Component\Config\Loader\LoaderInterface;
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use Symfony\Component\DependencyInjection\ContainerBuilder;
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use Symfony\Component\DependencyInjection\ContainerInterface;
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use Symfony\Component\DependencyInjection\Loader\ContainerBuilderAwareLoader;
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/**
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* A Kernel that allows you to configure services.
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*
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* @author Ryan Weaver <ryan@knpuniversity.com>
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*/
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abstract class MicroKernel extends Kernel
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{
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/**
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* Configure dependency injection extensions that have been added to the container.
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*
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* $c->loadFromExtension('framework', array(
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* 'secret' => '%secret%'
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* ));
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*
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* @param ContainerBuilder $c
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* @param LoaderInterface $loader
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*/
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abstract protected function configureExtensions(ContainerBuilder $c, LoaderInterface $loader);
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/**
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* Add any service definitions to your container.
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*
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* @param ContainerBuilder $c
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* @param LoaderInterface $loader
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*/
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abstract protected function configureServices(ContainerBuilder $c, LoaderInterface $loader);
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/**
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* Applies the bundle configuration and calls configureServices() for continued building.
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*
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* @param LoaderInterface $loader
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*/
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public function registerContainerConfiguration(LoaderInterface $loader)
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{
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if (!$loader instanceof ContainerBuilderAwareLoader) {
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throw new \LogicException('registerContainerConfiguration requires the LoaderInterface to be a ContainerBuilderAwareLoader.');
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}
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$this->configureExtensions($loader->getContainerBuilder(), $loader->getResourceLoader());
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$this->configureServices($loader->getContainerBuilder(), $loader->getResourceLoader());
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}
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/**
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* Returns a loader with the ContainerBuilder embedded inside of it.
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*
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* @param ContainerInterface $container
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*
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* @return ContainerBuilderAwareLoader
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*/
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protected function getContainerLoader(ContainerInterface $container)
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{
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if (!$container instanceof ContainerBuilder) {
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throw new \LogicException('Only ContainerBuilder instances are supported.');
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}
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$loader = parent::getContainerLoader($container);
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return new ContainerBuilderAwareLoader($container, $loader);
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}
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}

‎src/Symfony/Component/HttpKernel/Tests/Fixtures/MicroKernelForTest.php

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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\HttpKernel\Tests\Fixtures;
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use Symfony\Component\HttpKernel\MicroKernel;
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use Symfony\Component\Config\Loader\LoaderInterface;
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use Symfony\Component\DependencyInjection\ContainerBuilder;
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use Symfony\Component\DependencyInjection\ContainerInterface;
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use Symfony\Component\HttpKernel\Bundle\BundleInterface;
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class MicroKernelForTest extends MicroKernel
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{
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private $configureServicesCalled = false;
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private $configureExtensionsCalled = false;
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private $configureServicesArgs = array();
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public function registerBundles()
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{
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return array();
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}
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public function getContainerLoaderExternally(ContainerInterface $container)
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{
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return $this->getContainerLoader($container);
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}
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protected function configureExtensions(ContainerBuilder $c, LoaderInterface $loader)
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{
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$this->configureExtensionsCalled = true;
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}
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protected function configureServices(ContainerBuilder $c, LoaderInterface $loader)
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{
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$this->configureServicesArgs = array($c, $loader);
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$this->configureServicesCalled = true;
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}
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public function wasConfigureServicesCalled()
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{
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return $this->configureServicesCalled;
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}
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public function wasConfigureExtensionsCalled()
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{
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return $this->configureExtensionsCalled;
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}
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public function getConfigureServicesArguments()
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{
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return $this->configureServicesArgs;
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}
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}

‎src/Symfony/Component/HttpKernel/Tests/MicroKernelTest.php

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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\HttpKernel\Tests;
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use Symfony\Component\DependencyInjection\Loader\ContainerBuilderAwareLoader;
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use Symfony\Component\HttpKernel\Tests\Fixtures\MicroKernelForTest;
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use Symfony\Component\DependencyInjection\ContainerBuilder;
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use Symfony\Component\DependencyInjection\Container;
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class MicroKernelTest extends \PHPUnit_Framework_TestCase
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{
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public function testGetContainerLoader()
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{
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$containerBuilder = new ContainerBuilder();
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$kernel = new MicroKernelForTest('test', false);
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$loader = $kernel->getContainerLoaderExternally($containerBuilder);
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$this->assertInstanceOf('Symfony\Component\DependencyInjection\Loader\ContainerBuilderAwareLoader', $loader);
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$this->assertSame($containerBuilder, $loader->getContainerBuilder());
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}
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/**
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* @expectedException \LogicException
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*/
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public function testGetContainerLoaderFailsUnlessBuilder()
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{
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$containerBuilder = new Container();
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$kernel = new MicroKernelForTest('test', false);
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$kernel->getContainerLoaderExternally($containerBuilder);
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}
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/**
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* @expectedException \LogicException
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*/
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public function testRegisterContainerConfigurationOnlyAcceptsContainerAwareBuilderLoader()
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{
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$loader = $this->getMock('Symfony\Component\Config\Loader\LoaderInterface');
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$kernel = new MicroKernelForTest('test', false);
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$kernel->registerContainerConfiguration($loader);
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}
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public function testRegisterContainerConfiguration()
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{
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$loader = $this->getContainerBuilderAwareLoader();
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$kernel = new MicroKernelForTest('test', false);
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$kernel->registerContainerConfiguration($loader);
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$this->assertTrue($kernel->wasConfigureServicesCalled());
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$configureServicesArgs = $kernel->getConfigureServicesArguments();
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$this->assertSame($loader->getResourceLoader(), $configureServicesArgs[1], 'The original loader is sent to configureServices');
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}
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private function getContainerBuilderAwareLoader()
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{
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$loader = $this->getMock('Symfony\Component\Config\Loader\LoaderInterface');
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$builder = $this->getMock('Symfony\Component\DependencyInjection\ContainerBuilder');
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return new ContainerBuilderAwareLoader($builder, $loader);
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}
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}

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