ReverseContainerTest.php

<?php

namespace Drupal\Tests\Component\DependencyInjection;

use Drupal\Component\DependencyInjection\ReverseContainer;
use PHPUnit\Framework\TestCase;
use Symfony\Component\DependencyInjection\ContainerBuilder;

/**
 * @runTestsInSeparateProcesses
 *   The reverse container uses a static to maintain information across
 *   container rebuilds.
 *
 * @coversDefaultClass \Drupal\Component\DependencyInjection\ReverseContainer
 * @group DependencyInjection
 */
class ReverseContainerTest extends TestCase {
    
    /**
     * @covers ::getId
     */
    public function testGetId() : void {
        $container = new ContainerBuilder();
        $service = new \stdClass();
        $container->set('bar', $service);
        $reverse_container = new ReverseContainer($container);
        $this->assertSame('bar', $reverse_container->getId($service));
        $non_service = new \stdClass();
        $this->assertNull($reverse_container->getId($non_service));
        $this->assertSame('service_container', $reverse_container->getId($container));
    }
    
    /**
     * @covers ::recordContainer
     */
    public function testRecordContainer() : void {
        $container = new ContainerBuilder();
        $service = new \stdClass();
        $container->set('bar', $service);
        $reverse_container = new ReverseContainer($container);
        $reverse_container->recordContainer();
        $container = new ContainerBuilder();
        $reverse_container = new ReverseContainer($container);
        // New container does not have a bar service.
        $this->assertNull($reverse_container->getId($service));
        // Add the bar service to make the lookup based on the old object work as
        // expected.
        $container->set('bar', new \stdClass());
        $this->assertSame('bar', $reverse_container->getId($service));
    }
    
    /**
     * @covers ::recordContainer
     * @group legacy
     */
    public function testRecordContainerStringService() : void {
        $container = new ContainerBuilder();
        $service = new \stdClass();
        $container->set('bar', $service);
        // String services are deprecated in Symfony 4.4.
        $container->set('string_service', 'A string');
        $reverse_container = new ReverseContainer($container);
        $reverse_container->recordContainer();
        $container = new ContainerBuilder();
        $reverse_container = new ReverseContainer($container);
        // New container does not have a bar service.
        $this->assertNull($reverse_container->getId($service));
        // Add the bar service to make the lookup based on the old object work as
        // expected.
        $container->set('bar', new \stdClass());
        $this->assertSame('bar', $reverse_container->getId($service));
    }

}