src/libs/symfony/config/Tests/DependencyInjection/ConfigCachePassTest.php
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Config\Tests\DependencyInjection;

use PHPUnit\Framework\TestCase;
use Symfony\Component\DependencyInjection\Argument\IteratorArgument;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Reference;
use Symfony\Component\Config\DependencyInjection\ConfigCachePass;

/**
 * @group legacy
 */
class ConfigCachePassTest extends TestCase
{
    public function testThatCheckersAreProcessedInPriorityOrder()
    {
        $container = new ContainerBuilder();

        $definition = $container->register('config_cache_factory')->addArgument(null);
        $container->register('checker_2')->addTag('config_cache.resource_checker', array('priority' => 100));
        $container->register('checker_1')->addTag('config_cache.resource_checker', array('priority' => 200));
        $container->register('checker_3')->addTag('config_cache.resource_checker');

        $pass = new ConfigCachePass();
        $pass->process($container);

        $expected = new IteratorArgument(array(
            new Reference('checker_1'),
            new Reference('checker_2'),
            new Reference('checker_3'),
        ));
        $this->assertEquals($expected, $definition->getArgument(0));
    }

    public function testThatCheckersCanBeMissing()
    {
        $container = new ContainerBuilder();

        $definitionsBefore = count($container->getDefinitions());
        $aliasesBefore = count($container->getAliases());

        $pass = new ConfigCachePass();
        $pass->process($container);

        // the container is untouched (i.e. no new definitions or aliases)
        $this->assertCount($definitionsBefore, $container->getDefinitions());
        $this->assertCount($aliasesBefore, $container->getAliases());
    }
}
