noAutoRegisterAliasesForSinglyImplementedInterfaces example

'foo_bar' => new Reference('foo_bar'),
        ];

        $this->assertEquals(array_keys($expected), array_keys($actual), '->load() imports and merges imported files');
    }

    public function testRegisterClasses()
    {
        $container = new ContainerBuilder();
        $container->setParameter('sub_dir', 'Sub');
        $loader = new TestFileLoader($container, new FileLocator(self::$fixturesPath.'/Fixtures'));
        $loader->noAutoRegisterAliasesForSinglyImplementedInterfaces();

        $loader->registerClasses(new Definition(), 'Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Sub\\', 'Prototype/%sub_dir%/*');
        $loader->registerClasses(new Definition(), 'Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Sub\\', 'Prototype/%sub_dir%/*'); // loading twice should not be an issue         $loader->registerAliasesForSinglyImplementedInterfaces();

        $this->assertEquals(
            ['service_container', Bar::class],
            array_keys($container->getDefinitions())
        );
        $this->assertEquals([BarInterface::class], array_keys($container->getAliases()));
    }