ContainerTest.php

<?php


/**
 * @file
 * Contains \Drupal\Tests\Component\DependencyInjection\ContainerTest.
 */
namespace Drupal\Tests\Component\DependencyInjection;

use Drupal\Component\Utility\Crypt;
use Drupal\Tests\PhpUnitCompatibilityTrait;
use PHPUnit\Framework\TestCase;
use Symfony\Bridge\PhpUnit\ExpectDeprecationTrait;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
use Symfony\Component\DependencyInjection\Exception\LogicException;
use Symfony\Component\DependencyInjection\Exception\ParameterNotFoundException;
use Symfony\Component\DependencyInjection\Exception\RuntimeException;
use Symfony\Component\DependencyInjection\Exception\ServiceCircularReferenceException;
use Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException;
use Prophecy\Argument;

/**
 * @coversDefaultClass \Drupal\Component\DependencyInjection\Container
 * @group DependencyInjection
 */
class ContainerTest extends TestCase {
    use ExpectDeprecationTrait;
    use PhpUnitCompatibilityTrait;
    
    /**
     * The tested container.
     *
     * @var \Drupal\Component\DependencyInjection\ContainerInterface
     */
    protected $container;
    
    /**
     * The container definition used for the test.
     *
     * @var array
     */
    protected $containerDefinition;
    
    /**
     * The container class to be tested.
     *
     * @var bool
     */
    protected $containerClass;
    
    /**
     * Whether the container uses the machine-optimized format or not.
     *
     * @var bool
     */
    protected $machineFormat;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        $this->machineFormat = TRUE;
        $this->containerClass = '\\Drupal\\Component\\DependencyInjection\\Container';
        $this->containerDefinition = $this->getMockContainerDefinition();
        $this->container = new $this->containerClass($this->containerDefinition);
    }
    
    /**
     * Tests that passing a non-supported format throws an InvalidArgumentException.
     *
     * @covers ::__construct
     */
    public function testConstruct() {
        $container_definition = $this->getMockContainerDefinition();
        $container_definition['machine_format'] = !$this->machineFormat;
        $this->expectException(InvalidArgumentException::class);
        $container = new $this->containerClass($container_definition);
    }
    
    /**
     * Tests that Container::getParameter() works properly.
     *
     * @covers ::getParameter
     */
    public function testGetParameter() {
        $this->assertEquals($this->containerDefinition['parameters']['some_config'], $this->container
            ->getParameter('some_config'), 'Container parameter matches for %some_config%.');
        $this->assertEquals($this->containerDefinition['parameters']['some_other_config'], $this->container
            ->getParameter('some_other_config'), 'Container parameter matches for %some_other_config%.');
    }
    
    /**
     * Tests that Container::getParameter() works for non-existing parameters.
     *
     * @covers ::getParameter
     * @covers ::getParameterAlternatives
     * @covers ::getAlternatives
     */
    public function testGetParameterIfNotFound() {
        $this->expectException(ParameterNotFoundException::class);
        $this->container
            ->getParameter('parameter_that_does_not_exist');
    }
    
    /**
     * Tests that Container::getParameter() works properly for NULL parameters.
     *
     * @covers ::getParameter
     */
    public function testGetParameterIfNotFoundBecauseNull() {
        $this->expectException(ParameterNotFoundException::class);
        $this->container
            ->getParameter(NULL);
    }
    
    /**
     * Tests that Container::hasParameter() works properly.
     *
     * @covers ::hasParameter
     */
    public function testHasParameter() {
        $this->assertTrue($this->container
            ->hasParameter('some_config'), 'Container parameters include %some_config%.');
        $this->assertFalse($this->container
            ->hasParameter('some_config_not_exists'), 'Container parameters do not include %some_config_not_exists%.');
    }
    
    /**
     * Tests that Container::setParameter() in an unfrozen case works properly.
     *
     * @covers ::setParameter
     */
    public function testSetParameterWithUnfrozenContainer() {
        $container_definition = $this->containerDefinition;
        $container_definition['frozen'] = FALSE;
        $this->container = new $this->containerClass($container_definition);
        $this->container
            ->setParameter('some_config', 'new_value');
        $this->assertEquals('new_value', $this->container
            ->getParameter('some_config'), 'Container parameters can be set.');
    }
    
    /**
     * Tests that Container::setParameter() in a frozen case works properly.
     *
     * @covers ::setParameter
     */
    public function testSetParameterWithFrozenContainer() {
        $this->container = new $this->containerClass($this->containerDefinition);
        $this->expectException(LogicException::class);
        $this->container
            ->setParameter('some_config', 'new_value');
    }
    
    /**
     * Tests that Container::get() works properly.
     *
     * @covers ::get
     * @covers ::createService
     */
    public function testGet() {
        $container = $this->container
            ->get('service_container');
        $this->assertSame($this->container, $container, 'Container can be retrieved from itself.');
        // Retrieve services of the container.
        $other_service_class = $this->containerDefinition['services']['other.service']['class'];
        $other_service = $this->container
            ->get('other.service');
        $this->assertInstanceOf($other_service_class, $other_service);
        $some_parameter = $this->containerDefinition['parameters']['some_config'];
        $some_other_parameter = $this->containerDefinition['parameters']['some_other_config'];
        $service = $this->container
            ->get('service.provider');
        $this->assertEquals($other_service, $service->getSomeOtherService(), '@other.service was injected via constructor.');
        $this->assertEquals($some_parameter, $service->getSomeParameter(), '%some_config% was injected via constructor.');
        $this->assertEquals($this->container, $service->getContainer(), 'Container was injected via setter injection.');
        $this->assertEquals($some_other_parameter, $service->getSomeOtherParameter(), '%some_other_config% was injected via setter injection.');
        $this->assertEquals('foo', $service->_someProperty, 'Service has added properties.');
    }
    
    /**
     * Tests that Container::get() for non-shared services works properly.
     *
     * @covers ::get
     * @covers ::createService
     */
    public function testGetForNonSharedService() {
        $service = $this->container
            ->get('non_shared_service');
        $service2 = $this->container
            ->get('non_shared_service');
        $this->assertNotSame($service, $service2, 'Non shared services are always re-instantiated.');
    }
    
    /**
     * Tests that Container::get() works properly for class from parameters.
     *
     * @covers ::get
     * @covers ::createService
     */
    public function testGetForClassFromParameter() {
        $container_definition = $this->containerDefinition;
        $container_definition['frozen'] = FALSE;
        $container = new $this->containerClass($container_definition);
        $other_service_class = $this->containerDefinition['parameters']['some_parameter_class'];
        $other_service = $container->get('other.service_class_from_parameter');
        $this->assertInstanceOf($other_service_class, $other_service);
    }
    
    /**
     * Tests that Container::set() works properly.
     *
     * @covers ::set
     */
    public function testSet() {
        $this->assertNull($this->container
            ->get('new_id', ContainerInterface::NULL_ON_INVALID_REFERENCE));
        $mock_service = new MockService();
        $this->container
            ->set('new_id', $mock_service);
        $this->assertSame($mock_service, $this->container
            ->get('new_id'), 'A manual set service works as expected.');
    }
    
    /**
     * Tests that Container::has() works properly.
     *
     * @covers ::has
     */
    public function testHas() {
        $this->assertTrue($this->container
            ->has('other.service'));
        $this->assertFalse($this->container
            ->has('another.service'));
        // Set the service manually, ensure that its also respected.
        $mock_service = new MockService();
        $this->container
            ->set('another.service', $mock_service);
        $this->assertTrue($this->container
            ->has('another.service'));
    }
    
    /**
     * Tests that Container::has() for aliased services works properly.
     *
     * @covers ::has
     */
    public function testHasForAliasedService() {
        $service = $this->container
            ->has('service.provider');
        $aliased_service = $this->container
            ->has('service.provider_alias');
        $this->assertSame($service, $aliased_service);
    }
    
    /**
     * Tests that Container::get() for circular dependencies works properly.
     * @covers ::get
     * @covers ::createService
     */
    public function testGetForCircularServices() {
        $this->expectException(ServiceCircularReferenceException::class);
        $this->container
            ->get('circular_dependency');
    }
    
    /**
     * Tests that Container::get() for non-existent services works properly.
     *
     * @covers ::get
     * @covers ::createService
     * @covers ::getAlternatives
     * @covers ::getServiceAlternatives
     */
    public function testGetForNonExistentService() {
        $this->expectException(ServiceNotFoundException::class);
        $this->container
            ->get('service_not_exists');
    }
    
    /**
     * Tests that Container::get() for a serialized definition works properly.
     *
     * @covers ::get
     * @covers ::createService
     */
    public function testGetForSerializedServiceDefinition() {
        $container_definition = $this->containerDefinition;
        $container_definition['services']['other.service'] = serialize($container_definition['services']['other.service']);
        $container = new $this->containerClass($container_definition);
        // Retrieve services of the container.
        $other_service_class = $this->containerDefinition['services']['other.service']['class'];
        $other_service = $container->get('other.service');
        $this->assertInstanceOf($other_service_class, $other_service);
        $service = $container->get('service.provider');
        $this->assertEquals($other_service, $service->getSomeOtherService(), '@other.service was injected via constructor.');
    }
    
    /**
     * Tests that Container::get() for non-existent parameters works properly.
     *
     * @covers ::get
     * @covers ::createService
     * @covers ::resolveServicesAndParameters
     */
    public function testGetForNonExistentParameterDependency() {
        $service = $this->container
            ->get('service_parameter_not_exists', ContainerInterface::NULL_ON_INVALID_REFERENCE);
        $this->assertNull($service, 'Service is NULL.');
    }
    
    /**
     * Tests Container::get() with an exception due to missing parameter on the second call.
     *
     * @covers ::get
     * @covers ::createService
     * @covers ::resolveServicesAndParameters
     */
    public function testGetForParameterDependencyWithExceptionOnSecondCall() {
        $service = $this->container
            ->get('service_parameter_not_exists', ContainerInterface::NULL_ON_INVALID_REFERENCE);
        $this->assertNull($service, 'Service is NULL.');
        // Reset the service.
        $this->container
            ->set('service_parameter_not_exists', NULL);
        $this->expectException(InvalidArgumentException::class);
        $this->container
            ->get('service_parameter_not_exists');
    }
    
    /**
     * Tests that Container::get() for non-existent parameters works properly.
     *
     * @covers ::get
     * @covers ::createService
     * @covers ::resolveServicesAndParameters
     */
    public function testGetForNonExistentParameterDependencyWithException() {
        $this->expectException(InvalidArgumentException::class);
        $this->container
            ->get('service_parameter_not_exists');
    }
    
    /**
     * Tests that Container::get() for non-existent dependencies works properly.
     *
     * @covers ::get
     * @covers ::createService
     * @covers ::resolveServicesAndParameters
     */
    public function testGetForNonExistentServiceDependency() {
        $service = $this->container
            ->get('service_dependency_not_exists', ContainerInterface::NULL_ON_INVALID_REFERENCE);
        $this->assertNull($service, 'Service is NULL.');
    }
    
    /**
     * Tests that Container::get() for non-existent dependencies works properly.
     *
     * @covers ::get
     * @covers ::createService
     * @covers ::resolveServicesAndParameters
     * @covers ::getAlternatives
     */
    public function testGetForNonExistentServiceDependencyWithException() {
        $this->expectException(ServiceNotFoundException::class);
        $this->container
            ->get('service_dependency_not_exists');
    }
    
    /**
     * Tests that Container::get() for non-existent services works properly.
     *
     * @covers ::get
     * @covers ::createService
     */
    public function testGetForNonExistentServiceWhenUsingNull() {
        $this->assertNull($this->container
            ->get('service_not_exists', ContainerInterface::NULL_ON_INVALID_REFERENCE), 'Not found service does not throw exception.');
    }
    
    /**
     * Tests that Container::get() for NULL service works properly.
     * @covers ::get
     * @covers ::createService
     */
    public function testGetForNonExistentNULLService() {
        $this->expectException(ServiceNotFoundException::class);
        $this->container
            ->get(NULL);
    }
    
    /**
     * Tests multiple Container::get() calls for non-existing dependencies work.
     *
     * @covers ::get
     * @covers ::createService
     */
    public function testGetForNonExistentServiceMultipleTimes() {
        $container = new $this->containerClass();
        $this->assertNull($container->get('service_not_exists', ContainerInterface::NULL_ON_INVALID_REFERENCE), 'Not found service does not throw exception.');
        $this->assertNull($container->get('service_not_exists', ContainerInterface::NULL_ON_INVALID_REFERENCE), 'Not found service does not throw exception on second call.');
    }
    
    /**
     * Tests multiple Container::get() calls with exception on the second time.
     *
     * @covers ::get
     * @covers ::createService
     * @covers ::getAlternatives
     */
    public function testGetForNonExistentServiceWithExceptionOnSecondCall() {
        $this->assertNull($this->container
            ->get('service_not_exists', ContainerInterface::NULL_ON_INVALID_REFERENCE), 'Not found service does nto throw exception.');
        $this->expectException(ServiceNotFoundException::class);
        $this->container
            ->get('service_not_exists');
    }
    
    /**
     * Tests that Container::get() for aliased services works properly.
     *
     * @covers ::get
     * @covers ::createService
     */
    public function testGetForAliasedService() {
        $service = $this->container
            ->get('service.provider');
        $aliased_service = $this->container
            ->get('service.provider_alias');
        $this->assertSame($service, $aliased_service);
    }
    
    /**
     * Tests that Container::get() for synthetic services works - if defined.
     *
     * @covers ::get
     * @covers ::createService
     */
    public function testGetForSyntheticService() {
        $synthetic_service = new \stdClass();
        $this->container
            ->set('synthetic', $synthetic_service);
        $test_service = $this->container
            ->get('synthetic');
        $this->assertSame($synthetic_service, $test_service);
    }
    
    /**
     * Tests that Container::get() for synthetic services throws an Exception if not defined.
     *
     * @covers ::get
     * @covers ::createService
     */
    public function testGetForSyntheticServiceWithException() {
        $this->expectException(RuntimeException::class);
        $this->container
            ->get('synthetic');
    }
    
    /**
     * Tests that Container::get() for services with file includes works.
     *
     * @covers ::get
     * @covers ::createService
     */
    public function testGetWithFileInclude() {
        $this->container
            ->get('container_test_file_service_test');
        $this->assertTrue(function_exists('container_test_file_service_test_service_function'));
        $this->assertEquals('Hello Container', container_test_file_service_test_service_function());
    }
    
    /**
     * Tests that Container::get() for various arguments lengths works.
     *
     * @covers ::get
     * @covers ::createService
     * @covers ::resolveServicesAndParameters
     */
    public function testGetForInstantiationWithVariousArgumentLengths() {
        $args = [];
        for ($i = 0; $i < 12; $i++) {
            $instantiation_service = $this->container
                ->get('service_test_instantiation_' . $i);
            $this->assertEquals($args, $instantiation_service->getArguments());
            $args[] = 'arg_' . $i;
        }
    }
    
    /**
     * Tests that Container::get() for wrong factories works correctly.
     *
     * @covers ::get
     * @covers ::createService
     */
    public function testGetForWrongFactory() {
        $this->expectException(RuntimeException::class);
        $this->container
            ->get('wrong_factory');
    }
    
    /**
     * Tests Container::get() for factories via services (Symfony 2.7.0).
     *
     * @covers ::get
     * @covers ::createService
     */
    public function testGetForFactoryService() {
        $factory_service = $this->container
            ->get('factory_service');
        $factory_service_class = $this->container
            ->getParameter('factory_service_class');
        $this->assertInstanceOf($factory_service_class, $factory_service);
    }
    
    /**
     * Tests that Container::get() for factories via class works (Symfony 2.7.0).
     *
     * @covers ::get
     * @covers ::createService
     */
    public function testGetForFactoryClass() {
        $service = $this->container
            ->get('service.provider');
        $factory_service = $this->container
            ->get('factory_class');
        $this->assertInstanceOf(get_class($service), $factory_service);
        $this->assertEquals('bar', $factory_service->getSomeParameter(), 'Correct parameter was passed via the factory class instantiation.');
        $this->assertEquals($this->container, $factory_service->getContainer(), 'Container was injected via setter injection.');
    }
    
    /**
     * Tests that Container::get() for configurable services throws an Exception.
     *
     * @covers ::get
     * @covers ::createService
     */
    public function testGetForConfiguratorWithException() {
        $this->expectException(InvalidArgumentException::class);
        $this->container
            ->get('configurable_service_exception');
    }
    
    /**
     * Tests that Container::get() for configurable services works.
     *
     * @covers ::get
     * @covers ::createService
     */
    public function testGetForConfigurator() {
        $container = $this->container;
        // Setup a configurator.
        $configurator = $this->prophesize('\\Drupal\\Tests\\Component\\DependencyInjection\\MockConfiguratorInterface');
        $configurator->configureService(Argument::type('object'))
            ->shouldBeCalled(1)
            ->will(function ($args) use ($container) {
            $args[0]->setContainer($container);
        });
        $container->set('configurator', $configurator->reveal());
        // Test that the configurator worked.
        $service = $container->get('configurable_service');
        $this->assertSame($container, $service->getContainer(), 'Container was injected via configurator.');
    }
    
    /**
     * Tests that private services work correctly.
     *
     * @covers ::get
     * @covers ::createService
     * @covers ::resolveServicesAndParameters
     */
    public function testResolveServicesAndParametersForPrivateService() {
        $service = $this->container
            ->get('service_using_private');
        $private_service = $service->getSomeOtherService();
        $this->assertEquals('really_private_lama', $private_service->getSomeParameter(), 'Private was found successfully.');
        // Test that sharing the same private services works.
        $service = $this->container
            ->get('another_service_using_private');
        $another_private_service = $service->getSomeOtherService();
        $this->assertNotSame($private_service, $another_private_service, 'Private service is not shared.');
        $this->assertEquals('really_private_lama', $private_service->getSomeParameter(), 'Private was found successfully.');
    }
    
    /**
     * Tests that private service sharing works correctly.
     *
     * @covers ::get
     * @covers ::createService
     * @covers ::resolveServicesAndParameters
     */
    public function testResolveServicesAndParametersForSharedPrivateService() {
        $service = $this->container
            ->get('service_using_shared_private');
        $private_service = $service->getSomeOtherService();
        $this->assertEquals('really_private_lama', $private_service->getSomeParameter(), 'Private was found successfully.');
        // Test that sharing the same private services works.
        $service = $this->container
            ->get('another_service_using_shared_private');
        $same_private_service = $service->getSomeOtherService();
        $this->assertSame($private_service, $same_private_service, 'Private service is shared.');
        $this->assertEquals('really_private_lama', $private_service->getSomeParameter(), 'Private was found successfully.');
    }
    
    /**
     * Tests that services with an array of arguments work correctly.
     *
     * @covers ::get
     * @covers ::createService
     * @covers ::resolveServicesAndParameters
     */
    public function testResolveServicesAndParametersForArgumentsUsingDeepArray() {
        $service = $this->container
            ->get('service_using_array');
        $other_service = $this->container
            ->get('other.service');
        $this->assertEquals($other_service, $service->getSomeOtherService(), '@other.service was injected via constructor.');
    }
    
    /**
     * Tests that services that are optional work correctly.
     *
     * @covers ::get
     * @covers ::createService
     * @covers ::resolveServicesAndParameters
     */
    public function testResolveServicesAndParametersForOptionalServiceDependencies() {
        $service = $this->container
            ->get('service_with_optional_dependency');
        $this->assertNull($service->getSomeOtherService(), 'other service was NULL was expected.');
    }
    
    /**
     * Tests that an invalid argument throw an Exception.
     *
     * @covers ::get
     * @covers ::createService
     * @covers ::resolveServicesAndParameters
     */
    public function testResolveServicesAndParametersForInvalidArgument() {
        $this->expectException(InvalidArgumentException::class);
        $this->container
            ->get('invalid_argument_service');
    }
    
    /**
     * Tests that invalid arguments throw an Exception.
     *
     * @covers ::get
     * @covers ::createService
     * @covers ::resolveServicesAndParameters
     */
    public function testResolveServicesAndParametersForInvalidArguments() {
        // In case the machine-optimized format is not used, we need to simulate the
        // test failure.
        $this->expectException(InvalidArgumentException::class);
        if (!$this->machineFormat) {
            throw new InvalidArgumentException('Simulating the test failure.');
        }
        $this->container
            ->get('invalid_arguments_service');
    }
    
    /**
     * Tests that a parameter that points to a service works correctly.
     *
     * @covers ::get
     * @covers ::createService
     * @covers ::resolveServicesAndParameters
     */
    public function testResolveServicesAndParametersForServiceInstantiatedFromParameter() {
        $service = $this->container
            ->get('service.provider');
        $test_service = $this->container
            ->get('service_with_parameter_service');
        $this->assertSame($service, $test_service->getSomeOtherService(), 'Service was passed via parameter.');
    }
    
    /**
     * Tests that Container::initialized works correctly.
     *
     * @covers ::initialized
     */
    public function testInitialized() {
        $this->assertFalse($this->container
            ->initialized('late.service'), 'Late service is not initialized.');
        $this->container
            ->get('late.service');
        $this->assertTrue($this->container
            ->initialized('late.service'), 'Late service is initialized after it was retrieved once.');
    }
    
    /**
     * Tests that Container::initialized works correctly for aliases.
     *
     * @covers ::initialized
     */
    public function testInitializedForAliases() {
        $this->assertFalse($this->container
            ->initialized('late.service_alias'), 'Late service is not initialized.');
        $this->container
            ->get('late.service');
        $this->assertTrue($this->container
            ->initialized('late.service_alias'), 'Late service is initialized after it was retrieved once.');
    }
    
    /**
     * Tests that Container::getServiceIds() works properly.
     *
     * @covers ::getServiceIds
     */
    public function testGetServiceIds() {
        $service_definition_keys = array_keys($this->containerDefinition['services']);
        $this->assertEquals($service_definition_keys, $this->container
            ->getServiceIds(), 'Retrieved service IDs match definition.');
        $mock_service = new MockService();
        $this->container
            ->set('bar', $mock_service);
        $this->container
            ->set('service.provider', $mock_service);
        $service_definition_keys[] = 'bar';
        $this->assertEquals($service_definition_keys, $this->container
            ->getServiceIds(), 'Retrieved service IDs match definition after setting new services.');
    }
    
    /**
     * Tests that raw type services arguments are resolved correctly.
     *
     * @covers ::get
     * @covers ::createService
     * @covers ::resolveServicesAndParameters
     */
    public function testResolveServicesAndParametersForRawArgument() {
        $this->assertEquals([
            'ccc',
        ], $this->container
            ->get('service_with_raw_argument')
            ->getArguments());
    }
    
    /**
     * @covers \Drupal\Component\DependencyInjection\ServiceIdHashTrait::getServiceIdMappings
     * @covers \Drupal\Component\DependencyInjection\ServiceIdHashTrait::generateServiceIdHash
     *
     * @group legacy
     */
    public function testGetServiceIdMappings() {
        $this->expectDeprecation("Drupal\\Component\\DependencyInjection\\ServiceIdHashTrait::generateServiceIdHash() is deprecated in drupal:9.5.1 and is removed from drupal:11.0.0. Use the 'Drupal\\Component\\DependencyInjection\\ReverseContainer' service instead. See https://www.drupal.org/node/3327942");
        $this->expectDeprecation("Drupal\\Component\\DependencyInjection\\ServiceIdHashTrait::getServiceIdMappings() is deprecated in drupal:9.5.1 and is removed from drupal:11.0.0. Use the 'Drupal\\Component\\DependencyInjection\\ReverseContainer' service instead. See https://www.drupal.org/node/3327942");
        $this->assertEquals([], $this->container
            ->getServiceIdMappings());
        $s1 = $this->container
            ->get('other.service');
        $s2 = $this->container
            ->get('late.service');
        $this->assertEquals([
            $this->container
                ->generateServiceIdHash($s1) => 'other.service',
            $this->container
                ->generateServiceIdHash($s2) => 'late.service',
        ], $this->container
            ->getServiceIdMappings());
    }
    
    /**
     * Gets a mock container definition.
     *
     * @return array
     *   Associated array with parameters and services.
     */
    protected function getMockContainerDefinition() {
        $fake_service = new \stdClass();
        $parameters = [];
        $parameters['some_parameter_class'] = get_class($fake_service);
        $parameters['some_private_config'] = 'really_private_lama';
        $parameters['some_config'] = 'foo';
        $parameters['some_other_config'] = 'lama';
        $parameters['factory_service_class'] = get_class($fake_service);
        // Also test alias resolving.
        $parameters['service_from_parameter'] = $this->getServiceCall('service.provider_alias');
        $services = [];
        $services['service_container'] = [
            'class' => '\\Drupal\\service_container\\DependencyInjection\\Container',
        ];
        $services['other.service'] = [
            'class' => get_class($fake_service),
        ];
        $services['non_shared_service'] = [
            'class' => get_class($fake_service),
            'shared' => FALSE,
        ];
        $services['other.service_class_from_parameter'] = [
            'class' => $this->getParameterCall('some_parameter_class'),
        ];
        $services['late.service'] = [
            'class' => get_class($fake_service),
        ];
        $services['service.provider'] = [
            'class' => '\\Drupal\\Tests\\Component\\DependencyInjection\\MockService',
            'arguments' => $this->getCollection([
                $this->getServiceCall('other.service'),
                $this->getParameterCall('some_config'),
            ]),
            'properties' => $this->getCollection([
                '_someProperty' => 'foo',
            ]),
            'calls' => [
                [
                    'setContainer',
                    $this->getCollection([
                        $this->getServiceCall('service_container'),
                    ]),
                ],
                [
                    'setOtherConfigParameter',
                    $this->getCollection([
                        $this->getParameterCall('some_other_config'),
                    ]),
                ],
            ],
            'priority' => 0,
        ];
        // Test private services.
        $private_service = [
            'class' => '\\Drupal\\Tests\\Component\\DependencyInjection\\MockService',
            'arguments' => $this->getCollection([
                $this->getServiceCall('other.service'),
                $this->getParameterCall('some_private_config'),
            ]),
            'public' => FALSE,
        ];
        $services['service_using_private'] = [
            'class' => '\\Drupal\\Tests\\Component\\DependencyInjection\\MockService',
            'arguments' => $this->getCollection([
                $this->getPrivateServiceCall(NULL, $private_service),
                $this->getParameterCall('some_config'),
            ]),
        ];
        $services['another_service_using_private'] = [
            'class' => '\\Drupal\\Tests\\Component\\DependencyInjection\\MockService',
            'arguments' => $this->getCollection([
                $this->getPrivateServiceCall(NULL, $private_service),
                $this->getParameterCall('some_config'),
            ]),
        ];
        // Test shared private services.
        $id = 'private_service_shared_1';
        $services['service_using_shared_private'] = [
            'class' => '\\Drupal\\Tests\\Component\\DependencyInjection\\MockService',
            'arguments' => $this->getCollection([
                $this->getPrivateServiceCall($id, $private_service, TRUE),
                $this->getParameterCall('some_config'),
            ]),
        ];
        $services['another_service_using_shared_private'] = [
            'class' => '\\Drupal\\Tests\\Component\\DependencyInjection\\MockService',
            'arguments' => $this->getCollection([
                $this->getPrivateServiceCall($id, $private_service, TRUE),
                $this->getParameterCall('some_config'),
            ]),
        ];
        // Tests service with invalid argument.
        $services['invalid_argument_service'] = [
            'class' => '\\Drupal\\Tests\\Component\\DependencyInjection\\MockService',
            'arguments' => $this->getCollection([
                // Test passing non-strings, too.
1,
                (object) [
                    'type' => 'invalid',
                ],
            ]),
        ];
        $services['invalid_arguments_service'] = [
            'class' => '\\Drupal\\Tests\\Component\\DependencyInjection\\MockService',
            'arguments' => (object) [
                'type' => 'invalid',
            ],
        ];
        // Test service that needs deep-traversal.
        $services['service_using_array'] = [
            'class' => '\\Drupal\\Tests\\Component\\DependencyInjection\\MockService',
            'arguments' => $this->getCollection([
                $this->getCollection([
                    $this->getServiceCall('other.service'),
                ]),
                $this->getParameterCall('some_private_config'),
            ]),
        ];
        $services['service_with_optional_dependency'] = [
            'class' => '\\Drupal\\Tests\\Component\\DependencyInjection\\MockService',
            'arguments' => $this->getCollection([
                $this->getServiceCall('service.does_not_exist', ContainerInterface::NULL_ON_INVALID_REFERENCE),
                $this->getParameterCall('some_private_config'),
            ]),
        ];
        $services['factory_service'] = [
            'class' => '\\Drupal\\service_container\\ServiceContainer\\ControllerInterface',
            'factory' => [
                $this->getServiceCall('service.provider'),
                'getFactoryMethod',
            ],
            'arguments' => $this->getCollection([
                $this->getParameterCall('factory_service_class'),
            ]),
        ];
        $services['factory_class'] = [
            'class' => '\\Drupal\\service_container\\ServiceContainer\\ControllerInterface',
            'factory' => '\\Drupal\\Tests\\Component\\DependencyInjection\\MockService::getFactoryMethod',
            'arguments' => [
                '\\Drupal\\Tests\\Component\\DependencyInjection\\MockService',
                [
                    NULL,
                    'bar',
                ],
            ],
            'calls' => [
                [
                    'setContainer',
                    $this->getCollection([
                        $this->getServiceCall('service_container'),
                    ]),
                ],
            ],
        ];
        $services['wrong_factory'] = [
            'class' => '\\Drupal\\service_container\\ServiceContainer\\ControllerInterface',
            'factory' => (object) [
                'I am not a factory, but I pretend to be.',
            ],
        ];
        $services['circular_dependency'] = [
            'class' => '\\Drupal\\Tests\\Component\\DependencyInjection\\MockService',
            'arguments' => $this->getCollection([
                $this->getServiceCall('circular_dependency'),
            ]),
        ];
        $services['synthetic'] = [
            'synthetic' => TRUE,
        ];
        // The file could have been named as a .php file. The reason it is a .data
        // file is that SimpleTest tries to load it. SimpleTest does not like such
        // fixtures and hence we use a neutral name like .data.
        $services['container_test_file_service_test'] = [
            'class' => '\\stdClass',
            'file' => __DIR__ . '/Fixture/container_test_file_service_test_service_function.data',
        ];
        // Test multiple arguments.
        $args = [];
        for ($i = 0; $i < 12; $i++) {
            $services['service_test_instantiation_' . $i] = [
                'class' => '\\Drupal\\Tests\\Component\\DependencyInjection\\MockInstantiationService',
                // Also test a collection that does not need resolving.
'arguments' => $this->getCollection($args, FALSE),
            ];
            $args[] = 'arg_' . $i;
        }
        $services['service_parameter_not_exists'] = [
            'class' => '\\Drupal\\Tests\\Component\\DependencyInjection\\MockService',
            'arguments' => $this->getCollection([
                $this->getServiceCall('service.provider'),
                $this->getParameterCall('not_exists'),
            ]),
        ];
        $services['service_dependency_not_exists'] = [
            'class' => '\\Drupal\\Tests\\Component\\DependencyInjection\\MockService',
            'arguments' => $this->getCollection([
                $this->getServiceCall('service_not_exists'),
                $this->getParameterCall('some_config'),
            ]),
        ];
        $services['service_with_parameter_service'] = [
            'class' => '\\Drupal\\Tests\\Component\\DependencyInjection\\MockService',
            'arguments' => $this->getCollection([
                $this->getParameterCall('service_from_parameter'),
                // Also test deep collections that don't need resolving.
$this->getCollection([
                    1,
                ], FALSE),
            ]),
        ];
        // To ensure getAlternatives() finds something.
        $services['service_not_exists_similar'] = [
            'synthetic' => TRUE,
        ];
        // Test configurator.
        $services['configurator'] = [
            'synthetic' => TRUE,
        ];
        $services['configurable_service'] = [
            'class' => '\\Drupal\\Tests\\Component\\DependencyInjection\\MockService',
            'arguments' => [],
            'configurator' => [
                $this->getServiceCall('configurator'),
                'configureService',
            ],
        ];
        $services['configurable_service_exception'] = [
            'class' => '\\Drupal\\Tests\\Component\\DependencyInjection\\MockService',
            'arguments' => [],
            'configurator' => 'configurator_service_test_does_not_exist',
        ];
        // Raw argument
        $services['service_with_raw_argument'] = [
            'class' => '\\Drupal\\Tests\\Component\\DependencyInjection\\MockInstantiationService',
            'arguments' => $this->getCollection([
                $this->getRaw('ccc'),
            ]),
        ];
        $aliases = [];
        $aliases['service.provider_alias'] = 'service.provider';
        $aliases['late.service_alias'] = 'late.service';
        return [
            'aliases' => $aliases,
            'parameters' => $parameters,
            'services' => $services,
            'frozen' => TRUE,
            'machine_format' => $this->machineFormat,
        ];
    }
    
    /**
     * Helper function to return a service definition.
     */
    protected function getServiceCall($id, $invalid_behavior = ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE) {
        return (object) [
            'type' => 'service',
            'id' => $id,
            'invalidBehavior' => $invalid_behavior,
        ];
    }
    
    /**
     * Helper function to return a parameter definition.
     */
    protected function getParameterCall($name) {
        return (object) [
            'type' => 'parameter',
            'name' => $name,
        ];
    }
    
    /**
     * Helper function to return a private service definition.
     */
    protected function getPrivateServiceCall($id, $service_definition, $shared = FALSE) {
        if (!$id) {
            $hash = Crypt::hashBase64(serialize($service_definition));
            $id = 'private__' . $hash;
        }
        return (object) [
            'type' => 'private_service',
            'id' => $id,
            'value' => $service_definition,
            'shared' => $shared,
        ];
    }
    
    /**
     * Helper function to return a machine-optimized collection.
     */
    protected function getCollection($collection, $resolve = TRUE) {
        return (object) [
            'type' => 'collection',
            'value' => $collection,
            'resolve' => $resolve,
        ];
    }
    
    /**
     * Helper function to return a raw value definition.
     */
    protected function getRaw($value) {
        return (object) [
            'type' => 'raw',
            'value' => $value,
        ];
    }

}

/**
 * Helper interface to test Container::get() with configurator.
 *
 * @group DependencyInjection
 */
interface MockConfiguratorInterface {
    
    /**
     * Configures a service.
     *
     * @param object $service
     *   The service to configure.
     */
    public function configureService($service);

}

/**
 * Helper class to test Container::get() method for varying number of parameters.
 *
 * @group DependencyInjection
 */
class MockInstantiationService {
    
    /**
     * @var mixed[]
     */
    protected $arguments;
    
    /**
     * Construct a mock instantiation service.
     */
    public function __construct() {
        $this->arguments = func_get_args();
    }
    
    /**
     * Return arguments injected into the service.
     *
     * @return mixed[]
     *   Return the passed arguments.
     */
    public function getArguments() {
        return $this->arguments;
    }

}

/**
 * Helper class to test Container::get() method.
 *
 * @group DependencyInjection
 */
class MockService {
    
    /**
     * @var \Symfony\Component\DependencyInjection\ContainerInterface
     */
    protected $container;
    
    /**
     * @var object
     */
    protected $someOtherService;
    
    /**
     * @var string
     */
    protected $someParameter;
    
    /**
     * @var string
     */
    protected $someOtherParameter;
    
    /**
     * Constructs a MockService object.
     *
     * @param object $some_other_service
     *   (optional) Another injected service.
     * @param string $some_parameter
     *   (optional) An injected parameter.
     */
    public function __construct($some_other_service = NULL, $some_parameter = NULL) {
        if (is_array($some_other_service)) {
            $some_other_service = $some_other_service[0];
        }
        $this->someOtherService = $some_other_service;
        $this->someParameter = $some_parameter;
    }
    
    /**
     * Sets the container object.
     *
     * @param \Symfony\Component\DependencyInjection\ContainerInterface $container
     *   The container to inject via setter injection.
     */
    public function setContainer(ContainerInterface $container) {
        $this->container = $container;
    }
    
    /**
     * Gets the container object.
     *
     * @return \Symfony\Component\DependencyInjection\ContainerInterface
     *   The internally set container.
     */
    public function getContainer() {
        return $this->container;
    }
    
    /**
     * Gets the someOtherService object.
     *
     * @return object
     *   The injected service.
     */
    public function getSomeOtherService() {
        return $this->someOtherService;
    }
    
    /**
     * Gets the someParameter property.
     *
     * @return string
     *   The injected parameter.
     */
    public function getSomeParameter() {
        return $this->someParameter;
    }
    
    /**
     * Sets the someOtherParameter property.
     *
     * @param string $some_other_parameter
     *   The setter injected parameter.
     */
    public function setOtherConfigParameter($some_other_parameter) {
        $this->someOtherParameter = $some_other_parameter;
    }
    
    /**
     * Gets the someOtherParameter property.
     *
     * @return string
     *   The injected parameter.
     */
    public function getSomeOtherParameter() {
        return $this->someOtherParameter;
    }
    
    /**
     * Provides a factory method to get a service.
     *
     * @param string $class
     *   The class name of the class to instantiate
     * @param array $arguments
     *   (optional) Arguments to pass to the new class.
     *
     * @return object
     *   The instantiated service object.
     */
    public static function getFactoryMethod($class, $arguments = []) {
        $r = new \ReflectionClass($class);
        $service = $r->getConstructor() === NULL ? $r->newInstance() : $r->newInstanceArgs($arguments);
        return $service;
    }

}