ConfigDependencyTest.php

<?php

declare (strict_types=1);
namespace Drupal\KernelTests\Core\Config;

use Drupal\entity_test\Entity\EntityTest;
use Drupal\KernelTests\Core\Entity\EntityKernelTestBase;

/**
 * Tests for configuration dependencies.
 *
 * @coversDefaultClass \Drupal\Core\Config\ConfigManager
 *
 * @group config
 */
class ConfigDependencyTest extends EntityKernelTestBase {
    
    /**
     * Modules to enable.
     *
     * The entity_test module is enabled to provide content entity types.
     *
     * @var array
     */
    protected static $modules = [
        'config_test',
        'entity_test',
        'user',
        'node',
        'views',
    ];
    
    /**
     * Tests that calculating dependencies for system module.
     */
    public function testNonEntity() : void {
        $this->installConfig([
            'system',
        ]);
        $config_manager = \Drupal::service('config.manager');
        $dependents = $config_manager->findConfigEntityDependencies('module', [
            'system',
        ]);
        $this->assertTrue(isset($dependents['system.site']), 'Simple configuration system.site has a UUID key even though it is not a configuration entity and therefore is found when looking for dependencies of the System module.');
        // Ensure that calling
        // \Drupal\Core\Config\ConfigManager::findConfigEntityDependenciesAsEntities()
        // does not try to load system.site as an entity.
        $config_manager->findConfigEntityDependenciesAsEntities('module', [
            'system',
        ]);
    }
    
    /**
     * Tests creating dependencies on configuration entities.
     */
    public function testDependencyManagement() : void {
        
        /** @var \Drupal\Core\Config\ConfigManagerInterface $config_manager */
        $config_manager = \Drupal::service('config.manager');
        $storage = $this->container
            ->get('entity_type.manager')
            ->getStorage('config_test');
        // Test dependencies between modules.
        $entity1 = $storage->create([
            'id' => 'entity1',
            'dependencies' => [
                'enforced' => [
                    'module' => [
                        'node',
                    ],
                ],
            ],
        ]);
        $entity1->save();
        $dependents = $config_manager->findConfigEntityDependencies('module', [
            'node',
        ]);
        $this->assertTrue(isset($dependents['config_test.dynamic.entity1']), 'config_test.dynamic.entity1 has a dependency on the Node module.');
        $dependents = $config_manager->findConfigEntityDependencies('module', [
            'config_test',
        ]);
        $this->assertTrue(isset($dependents['config_test.dynamic.entity1']), 'config_test.dynamic.entity1 has a dependency on the config_test module.');
        $dependents = $config_manager->findConfigEntityDependencies('module', [
            'views',
        ]);
        $this->assertFalse(isset($dependents['config_test.dynamic.entity1']), 'config_test.dynamic.entity1 does not have a dependency on the Views module.');
        // Ensure that the provider of the config entity is not actually written to
        // the dependencies array.
        $raw_config = $this->config('config_test.dynamic.entity1');
        $root_module_dependencies = $raw_config->get('dependencies.module');
        $this->assertEmpty($root_module_dependencies, 'Node module is not written to the root dependencies array as it is enforced.');
        // Create additional entities to test dependencies on config entities.
        $entity2 = $storage->create([
            'id' => 'entity2',
            'dependencies' => [
                'enforced' => [
                    'config' => [
                        $entity1->getConfigDependencyName(),
                    ],
                ],
            ],
        ]);
        $entity2->save();
        $entity3 = $storage->create([
            'id' => 'entity3',
            'dependencies' => [
                'enforced' => [
                    'config' => [
                        $entity2->getConfigDependencyName(),
                    ],
                ],
            ],
        ]);
        $entity3->save();
        $entity4 = $storage->create([
            'id' => 'entity4',
            'dependencies' => [
                'enforced' => [
                    'config' => [
                        $entity3->getConfigDependencyName(),
                    ],
                ],
            ],
        ]);
        $entity4->save();
        // Test getting $entity1's dependencies as configuration dependency objects.
        $dependents = $config_manager->findConfigEntityDependencies('config', [
            $entity1->getConfigDependencyName(),
        ]);
        $this->assertFalse(isset($dependents['config_test.dynamic.entity1']), 'config_test.dynamic.entity1 does not have a dependency on itself.');
        $this->assertTrue(isset($dependents['config_test.dynamic.entity2']), 'config_test.dynamic.entity2 has a dependency on config_test.dynamic.entity1.');
        $this->assertTrue(isset($dependents['config_test.dynamic.entity3']), 'config_test.dynamic.entity3 has a dependency on config_test.dynamic.entity1.');
        $this->assertTrue(isset($dependents['config_test.dynamic.entity4']), 'config_test.dynamic.entity4 has a dependency on config_test.dynamic.entity1.');
        // Test getting $entity2's dependencies as entities.
        $dependents = $config_manager->findConfigEntityDependenciesAsEntities('config', [
            $entity2->getConfigDependencyName(),
        ]);
        $dependent_ids = $this->getDependentIds($dependents);
        $this->assertNotContains('config_test:entity1', $dependent_ids, 'config_test.dynamic.entity1 does not have a dependency on config_test.dynamic.entity1.');
        $this->assertNotContains('config_test:entity2', $dependent_ids, 'config_test.dynamic.entity2 does not have a dependency on itself.');
        $this->assertContains('config_test:entity3', $dependent_ids, 'config_test.dynamic.entity3 has a dependency on config_test.dynamic.entity2.');
        $this->assertContains('config_test:entity4', $dependent_ids, 'config_test.dynamic.entity4 has a dependency on config_test.dynamic.entity2.');
        // Test getting node module's dependencies as configuration dependency
        // objects.
        $dependents = $config_manager->findConfigEntityDependencies('module', [
            'node',
        ]);
        $this->assertTrue(isset($dependents['config_test.dynamic.entity1']), 'config_test.dynamic.entity1 has a dependency on the Node module.');
        $this->assertTrue(isset($dependents['config_test.dynamic.entity2']), 'config_test.dynamic.entity2 has a dependency on the Node module.');
        $this->assertTrue(isset($dependents['config_test.dynamic.entity3']), 'config_test.dynamic.entity3 has a dependency on the Node module.');
        $this->assertTrue(isset($dependents['config_test.dynamic.entity4']), 'config_test.dynamic.entity4 has a dependency on the Node module.');
        // Test getting node module's dependencies as configuration dependency
        // objects after making $entity3 also dependent on node module but $entity1
        // no longer depend on node module.
        $entity1->setEnforcedDependencies([])
            ->save();
        $entity3->setEnforcedDependencies([
            'module' => [
                'node',
            ],
            'config' => [
                $entity2->getConfigDependencyName(),
            ],
        ])
            ->save();
        $dependents = $config_manager->findConfigEntityDependencies('module', [
            'node',
        ]);
        $this->assertFalse(isset($dependents['config_test.dynamic.entity1']), 'config_test.dynamic.entity1 does not have a dependency on the Node module.');
        $this->assertFalse(isset($dependents['config_test.dynamic.entity2']), 'config_test.dynamic.entity2 does not have a dependency on the Node module.');
        $this->assertTrue(isset($dependents['config_test.dynamic.entity3']), 'config_test.dynamic.entity3 has a dependency on the Node module.');
        $this->assertTrue(isset($dependents['config_test.dynamic.entity4']), 'config_test.dynamic.entity4 has a dependency on the Node module.');
        // Test dependency on a content entity.
        $entity_test = EntityTest::create([
            'name' => $this->randomString(),
            'type' => 'entity_test',
        ]);
        $entity_test->save();
        $entity2->setEnforcedDependencies([
            'config' => [
                $entity1->getConfigDependencyName(),
            ],
            'content' => [
                $entity_test->getConfigDependencyName(),
            ],
        ])
            ->save();
        $dependents = $config_manager->findConfigEntityDependencies('content', [
            $entity_test->getConfigDependencyName(),
        ]);
        $this->assertFalse(isset($dependents['config_test.dynamic.entity1']), 'config_test.dynamic.entity1 does not have a dependency on the content entity.');
        $this->assertTrue(isset($dependents['config_test.dynamic.entity2']), 'config_test.dynamic.entity2 has a dependency on the content entity.');
        $this->assertTrue(isset($dependents['config_test.dynamic.entity3']), 'config_test.dynamic.entity3 has a dependency on the content entity (via entity2).');
        $this->assertTrue(isset($dependents['config_test.dynamic.entity4']), 'config_test.dynamic.entity4 has a dependency on the content entity (via entity3).');
        // Create a configuration entity of a different type with the same ID as one
        // of the entities already created.
        $alt_storage = $this->container
            ->get('entity_type.manager')
            ->getStorage('config_query_test');
        $alt_storage->create([
            'id' => 'entity1',
            'dependencies' => [
                'enforced' => [
                    'config' => [
                        $entity1->getConfigDependencyName(),
                    ],
                ],
            ],
        ])
            ->save();
        $alt_storage->create([
            'id' => 'entity2',
            'dependencies' => [
                'enforced' => [
                    'module' => [
                        'views',
                    ],
                ],
            ],
        ])
            ->save();
        $dependents = $config_manager->findConfigEntityDependenciesAsEntities('config', [
            $entity1->getConfigDependencyName(),
        ]);
        $dependent_ids = $this->getDependentIds($dependents);
        $this->assertNotContains('config_test:entity1', $dependent_ids, 'config_test.dynamic.entity1 does not have a dependency on itself.');
        $this->assertContains('config_test:entity2', $dependent_ids, 'config_test.dynamic.entity2 has a dependency on config_test.dynamic.entity1.');
        $this->assertContains('config_test:entity3', $dependent_ids, 'config_test.dynamic.entity3 has a dependency on config_test.dynamic.entity1.');
        $this->assertContains('config_test:entity4', $dependent_ids, 'config_test.dynamic.entity4 has a dependency on config_test.dynamic.entity1.');
        $this->assertContains('config_query_test:entity1', $dependent_ids, 'config_query_test.dynamic.entity1 has a dependency on config_test.dynamic.entity1.');
        $this->assertNotContains('config_query_test:entity2', $dependent_ids, 'config_query_test.dynamic.entity2 does not have a dependency on config_test.dynamic.entity1.');
        $dependents = $config_manager->findConfigEntityDependenciesAsEntities('module', [
            'node',
            'views',
        ]);
        $dependent_ids = $this->getDependentIds($dependents);
        $this->assertNotContains('config_test:entity1', $dependent_ids, 'config_test.dynamic.entity1 does not have a dependency on Views or Node.');
        $this->assertNotContains('config_test:entity2', $dependent_ids, 'config_test.dynamic.entity2 does not have a dependency on Views or Node.');
        $this->assertContains('config_test:entity3', $dependent_ids, 'config_test.dynamic.entity3 has a dependency on Views or Node.');
        $this->assertContains('config_test:entity4', $dependent_ids, 'config_test.dynamic.entity4 has a dependency on Views or Node.');
        $this->assertNotContains('config_query_test:entity1', $dependent_ids, 'config_test.query.entity1 does not have a dependency on Views or Node.');
        $this->assertContains('config_query_test:entity2', $dependent_ids, 'config_test.query.entity2 has a dependency on Views or Node.');
        $dependents = $config_manager->findConfigEntityDependenciesAsEntities('module', [
            'config_test',
        ]);
        $dependent_ids = $this->getDependentIds($dependents);
        $this->assertContains('config_test:entity1', $dependent_ids, 'config_test.dynamic.entity1 has a dependency on config_test module.');
        $this->assertContains('config_test:entity2', $dependent_ids, 'config_test.dynamic.entity2 has a dependency on config_test module.');
        $this->assertContains('config_test:entity3', $dependent_ids, 'config_test.dynamic.entity3 has a dependency on config_test module.');
        $this->assertContains('config_test:entity4', $dependent_ids, 'config_test.dynamic.entity4 has a dependency on config_test module.');
        $this->assertContains('config_query_test:entity1', $dependent_ids, 'config_test.query.entity1 has a dependency on config_test module.');
        $this->assertContains('config_query_test:entity2', $dependent_ids, 'config_test.query.entity2 has a dependency on config_test module.');
        // Test the ability to find missing content dependencies.
        $missing_dependencies = $config_manager->findMissingContentDependencies();
        $this->assertEquals([], $missing_dependencies);
        $expected = [
            $entity_test->uuid() => [
                'entity_type' => 'entity_test',
                'bundle' => $entity_test->bundle(),
                'uuid' => $entity_test->uuid(),
            ],
        ];
        // Delete the content entity so that is it now missing.
        $entity_test->delete();
        $missing_dependencies = $config_manager->findMissingContentDependencies();
        $this->assertEquals($expected, $missing_dependencies);
        // Add a fake missing dependency to ensure multiple missing dependencies
        // work.
        $entity1->setEnforcedDependencies([
            'content' => [
                $entity_test->getConfigDependencyName(),
                'entity_test:bundle:uuid',
            ],
        ])
            ->save();
        $expected['uuid'] = [
            'entity_type' => 'entity_test',
            'bundle' => 'bundle',
            'uuid' => 'uuid',
        ];
        $missing_dependencies = $config_manager->findMissingContentDependencies();
        $this->assertEquals($expected, $missing_dependencies);
    }
    
    /**
     * Tests ConfigManager::uninstall() and config entity dependency management.
     */
    public function testConfigEntityUninstall() : void {
        
        /** @var \Drupal\Core\Config\ConfigManagerInterface $config_manager */
        $config_manager = \Drupal::service('config.manager');
        
        /** @var \Drupal\Core\Config\Entity\ConfigEntityStorage $storage */
        $storage = $this->container
            ->get('entity_type.manager')
            ->getStorage('config_test');
        // Test dependencies between modules.
        $entity1 = $storage->create([
            'id' => 'entity1',
            'dependencies' => [
                'enforced' => [
                    'module' => [
                        'node',
                        'config_test',
                    ],
                ],
            ],
        ]);
        $entity1->save();
        $entity2 = $storage->create([
            'id' => 'entity2',
            'dependencies' => [
                'enforced' => [
                    'config' => [
                        $entity1->getConfigDependencyName(),
                    ],
                ],
            ],
        ]);
        $entity2->save();
        // Test that doing a config uninstall of the node module deletes entity2
        // since it is dependent on entity1 which is dependent on the node module.
        $config_manager->uninstall('module', 'node');
        $this->assertNull($storage->load('entity1'), 'Entity 1 deleted');
        $this->assertNull($storage->load('entity2'), 'Entity 2 deleted');
    }
    
    /**
     * Data provider for self::testConfigEntityUninstallComplex().
     */
    public static function providerConfigEntityUninstallComplex() {
        // Ensure that alphabetical order has no influence on dependency fixing and
        // removal.
        return [
            [
                [
                    'a',
                    'b',
                    'c',
                    'd',
                    'e',
                ],
            ],
            [
                [
                    'e',
                    'd',
                    'c',
                    'b',
                    'a',
                ],
            ],
            [
                [
                    'e',
                    'c',
                    'd',
                    'a',
                    'b',
                ],
            ],
        ];
    }
    
    /**
     * Tests complex configuration entity dependency handling during uninstall.
     *
     * Configuration entities can be deleted or updated during module uninstall
     * because they have dependencies on the module.
     *
     * @param array $entity_id_suffixes
     *   The suffixes to add to the 4 entities created by the test.
     *
     * @dataProvider providerConfigEntityUninstallComplex
     */
    public function testConfigEntityUninstallComplex(array $entity_id_suffixes) : void {
        
        /** @var \Drupal\Core\Config\ConfigManagerInterface $config_manager */
        $config_manager = \Drupal::service('config.manager');
        
        /** @var \Drupal\Core\Config\Entity\ConfigEntityStorage $storage */
        $storage = $this->container
            ->get('entity_type.manager')
            ->getStorage('config_test');
        // Entity 1 will be deleted because it depends on node.
        $entity_1 = $storage->create([
            'id' => 'entity_' . $entity_id_suffixes[0],
            'dependencies' => [
                'enforced' => [
                    'module' => [
                        'node',
                        'config_test',
                    ],
                ],
            ],
        ]);
        $entity_1->save();
        // Entity 2 has a dependency on entity 1 but it can be fixed because
        // \Drupal\config_test\Entity::onDependencyRemoval() will remove the
        // dependency before config entities are deleted.
        $entity_2 = $storage->create([
            'id' => 'entity_' . $entity_id_suffixes[1],
            'dependencies' => [
                'enforced' => [
                    'config' => [
                        $entity_1->getConfigDependencyName(),
                    ],
                ],
            ],
        ]);
        $entity_2->save();
        // Entity 3 will be unchanged because it is dependent on entity 2 which can
        // be fixed. The ConfigEntityInterface::onDependencyRemoval() method will
        // not be called for this entity.
        $entity_3 = $storage->create([
            'id' => 'entity_' . $entity_id_suffixes[2],
            'dependencies' => [
                'enforced' => [
                    'config' => [
                        $entity_2->getConfigDependencyName(),
                    ],
                ],
            ],
        ]);
        $entity_3->save();
        // Entity 4's config dependency will be fixed but it will still be deleted
        // because it also depends on the node module.
        $entity_4 = $storage->create([
            'id' => 'entity_' . $entity_id_suffixes[3],
            'dependencies' => [
                'enforced' => [
                    'config' => [
                        $entity_1->getConfigDependencyName(),
                    ],
                    'module' => [
                        'node',
                        'config_test',
                    ],
                ],
            ],
        ]);
        $entity_4->save();
        // Entity 5 will be fixed because it is dependent on entity 3, which is
        // unchanged, and entity 1 which will be fixed because
        // \Drupal\config_test\Entity::onDependencyRemoval() will remove the
        // dependency.
        $entity_5 = $storage->create([
            'id' => 'entity_' . $entity_id_suffixes[4],
            'dependencies' => [
                'enforced' => [
                    'config' => [
                        $entity_1->getConfigDependencyName(),
                        $entity_3->getConfigDependencyName(),
                    ],
                ],
            ],
        ]);
        $entity_5->save();
        // Set a more complicated test where dependencies will be fixed.
        \Drupal::state()->set('config_test.fix_dependencies', [
            $entity_1->getConfigDependencyName(),
        ]);
        \Drupal::state()->set('config_test.on_dependency_removal_called', []);
        // Do a dry run using
        // \Drupal\Core\Config\ConfigManager::getConfigEntitiesToChangeOnDependencyRemoval().
        $config_entities = $config_manager->getConfigEntitiesToChangeOnDependencyRemoval('module', [
            'node',
        ]);
        // Assert that \Drupal\config_test\Entity\ConfigTest::onDependencyRemoval()
        // is called as expected and with the correct dependencies.
        $called = \Drupal::state()->get('config_test.on_dependency_removal_called', []);
        $this->assertArrayNotHasKey($entity_3->id(), $called, 'ConfigEntityInterface::onDependencyRemoval() is not called for entity 3.');
        $this->assertSame([
            $entity_1->id(),
            $entity_4->id(),
            $entity_2->id(),
            $entity_5->id(),
        ], array_keys($called), 'The most dependent entities have ConfigEntityInterface::onDependencyRemoval() called first.');
        $this->assertSame([
            'config' => [],
            'content' => [],
            'module' => [
                'node',
            ],
            'theme' => [],
        ], $called[$entity_1->id()]);
        $this->assertSame([
            'config' => [
                $entity_1->getConfigDependencyName(),
            ],
            'content' => [],
            'module' => [],
            'theme' => [],
        ], $called[$entity_2->id()]);
        $this->assertSame([
            'config' => [
                $entity_1->getConfigDependencyName(),
            ],
            'content' => [],
            'module' => [
                'node',
            ],
            'theme' => [],
        ], $called[$entity_4->id()]);
        $this->assertSame([
            'config' => [
                $entity_1->getConfigDependencyName(),
            ],
            'content' => [],
            'module' => [],
            'theme' => [],
        ], $called[$entity_5->id()]);
        $this->assertEquals($entity_1->uuid(), $config_entities['delete'][1]->uuid(), 'Entity 1 will be deleted.');
        $this->assertEquals($entity_2->uuid(), $config_entities['update'][0]->uuid(), 'Entity 2 will be updated.');
        $this->assertEquals($entity_3->uuid(), reset($config_entities['unchanged'])->uuid(), 'Entity 3 is not changed.');
        $this->assertEquals($entity_4->uuid(), $config_entities['delete'][0]->uuid(), 'Entity 4 will be deleted.');
        $this->assertEquals($entity_5->uuid(), $config_entities['update'][1]->uuid(), 'Entity 5 is updated.');
        // Perform the uninstall.
        $config_manager->uninstall('module', 'node');
        // Test that expected actions have been performed.
        $this->assertNull($storage->load($entity_1->id()), 'Entity 1 deleted');
        $entity_2 = $storage->load($entity_2->id());
        $this->assertNotEmpty($entity_2, 'Entity 2 not deleted');
        $this->assertEquals([], $entity_2->calculateDependencies()
            ->getDependencies()['config'], 'Entity 2 dependencies updated to remove dependency on entity 1.');
        $entity_3 = $storage->load($entity_3->id());
        $this->assertNotEmpty($entity_3, 'Entity 3 not deleted');
        $this->assertEquals([
            $entity_2->getConfigDependencyName(),
        ], $entity_3->calculateDependencies()
            ->getDependencies()['config'], 'Entity 3 still depends on entity 2.');
        $this->assertNull($storage->load($entity_4->id()), 'Entity 4 deleted');
    }
    
    /**
     * @covers ::uninstall
     * @covers ::getConfigEntitiesToChangeOnDependencyRemoval
     */
    public function testConfigEntityUninstallThirdParty() : void {
        
        /** @var \Drupal\Core\Config\ConfigManagerInterface $config_manager */
        $config_manager = \Drupal::service('config.manager');
        
        /** @var \Drupal\Core\Config\Entity\ConfigEntityStorage $storage */
        $storage = $this->container
            ->get('entity_type.manager')
            ->getStorage('config_test');
        // Entity 1 will be fixed because it only has a dependency via third-party
        // settings, which are fixable.
        $entity_1 = $storage->create([
            'id' => 'entity_1',
            'dependencies' => [
                'enforced' => [
                    'module' => [
                        'config_test',
                    ],
                ],
            ],
            'third_party_settings' => [
                'node' => [
                    'foo' => 'bar',
                ],
            ],
        ]);
        $entity_1->save();
        // Entity 2 has a dependency on entity 1.
        $entity_2 = $storage->create([
            'id' => 'entity_2',
            'dependencies' => [
                'enforced' => [
                    'config' => [
                        $entity_1->getConfigDependencyName(),
                    ],
                ],
            ],
            'third_party_settings' => [
                'node' => [
                    'foo' => 'bar',
                ],
            ],
        ]);
        $entity_2->save();
        // Entity 3 will be unchanged because it is dependent on entity 2 which can
        // be fixed. The ConfigEntityInterface::onDependencyRemoval() method will
        // not be called for this entity.
        $entity_3 = $storage->create([
            'id' => 'entity_3',
            'dependencies' => [
                'enforced' => [
                    'config' => [
                        $entity_2->getConfigDependencyName(),
                    ],
                ],
            ],
        ]);
        $entity_3->save();
        // Entity 4's config dependency will be fixed but it will still be deleted
        // because it also depends on the node module.
        $entity_4 = $storage->create([
            'id' => 'entity_4',
            'dependencies' => [
                'enforced' => [
                    'config' => [
                        $entity_1->getConfigDependencyName(),
                    ],
                    'module' => [
                        'node',
                        'config_test',
                    ],
                ],
            ],
        ]);
        $entity_4->save();
        \Drupal::state()->set('config_test.fix_dependencies', []);
        \Drupal::state()->set('config_test.on_dependency_removal_called', []);
        // Do a dry run using
        // \Drupal\Core\Config\ConfigManager::getConfigEntitiesToChangeOnDependencyRemoval().
        $config_entities = $config_manager->getConfigEntitiesToChangeOnDependencyRemoval('module', [
            'node',
        ]);
        $config_entity_ids = [
            'update' => [],
            'delete' => [],
            'unchanged' => [],
        ];
        foreach ($config_entities as $type => $config_entities_by_type) {
            foreach ($config_entities_by_type as $config_entity) {
                $config_entity_ids[$type][] = $config_entity->id();
            }
        }
        $expected = [
            'update' => [
                $entity_1->id(),
                $entity_2->id(),
            ],
            'delete' => [
                $entity_4->id(),
            ],
            'unchanged' => [
                $entity_3->id(),
            ],
        ];
        $this->assertSame($expected, $config_entity_ids);
        $called = \Drupal::state()->get('config_test.on_dependency_removal_called', []);
        $this->assertArrayNotHasKey($entity_3->id(), $called, 'ConfigEntityInterface::onDependencyRemoval() is not called for entity 3.');
        $this->assertSame([
            $entity_1->id(),
            $entity_4->id(),
            $entity_2->id(),
        ], array_keys($called), 'The most dependent entities have ConfigEntityInterface::onDependencyRemoval() called first.');
        $this->assertSame([
            'config' => [],
            'content' => [],
            'module' => [
                'node',
            ],
            'theme' => [],
        ], $called[$entity_1->id()]);
        $this->assertSame([
            'config' => [],
            'content' => [],
            'module' => [
                'node',
            ],
            'theme' => [],
        ], $called[$entity_2->id()]);
        $this->assertSame([
            'config' => [],
            'content' => [],
            'module' => [
                'node',
            ],
            'theme' => [],
        ], $called[$entity_4->id()]);
        // Perform the uninstall.
        $config_manager->uninstall('module', 'node');
        // Test that expected actions have been performed.
        $entity_1 = $storage->load($entity_1->id());
        $this->assertNotEmpty($entity_1, 'Entity 1 not deleted');
        $this->assertSame($entity_1->getThirdPartySettings('node'), [], 'Entity 1 third party settings updated.');
        $entity_2 = $storage->load($entity_2->id());
        $this->assertNotEmpty($entity_2, 'Entity 2 not deleted');
        $this->assertSame($entity_2->getThirdPartySettings('node'), [], 'Entity 2 third party settings updated.');
        $this->assertSame($entity_2->calculateDependencies()
            ->getDependencies()['config'], [
            $entity_1->getConfigDependencyName(),
        ], 'Entity 2 still depends on entity 1.');
        $entity_3 = $storage->load($entity_3->id());
        $this->assertNotEmpty($entity_3, 'Entity 3 not deleted');
        $this->assertSame($entity_3->calculateDependencies()
            ->getDependencies()['config'], [
            $entity_2->getConfigDependencyName(),
        ], 'Entity 3 still depends on entity 2.');
        $this->assertNull($storage->load($entity_4->id()), 'Entity 4 deleted');
    }
    
    /**
     * Tests deleting a configuration entity and dependency management.
     */
    public function testConfigEntityDelete() : void {
        
        /** @var \Drupal\Core\Config\ConfigManagerInterface $config_manager */
        $config_manager = \Drupal::service('config.manager');
        
        /** @var \Drupal\Core\Config\Entity\ConfigEntityStorage $storage */
        $storage = $this->container
            ->get('entity_type.manager')
            ->getStorage('config_test');
        // Test dependencies between configuration entities.
        $entity1 = $storage->create([
            'id' => 'entity1',
        ]);
        $entity1->save();
        $entity2 = $storage->create([
            'id' => 'entity2',
            'dependencies' => [
                'enforced' => [
                    'config' => [
                        $entity1->getConfigDependencyName(),
                    ],
                ],
            ],
        ]);
        $entity2->save();
        // Do a dry run using
        // \Drupal\Core\Config\ConfigManager::getConfigEntitiesToChangeOnDependencyRemoval().
        $config_entities = $config_manager->getConfigEntitiesToChangeOnDependencyRemoval('config', [
            $entity1->getConfigDependencyName(),
        ]);
        $this->assertEquals($entity2->uuid(), reset($config_entities['delete'])->uuid(), 'Entity 2 will be deleted.');
        $this->assertEmpty($config_entities['update'], 'No dependent configuration entities will be updated.');
        $this->assertEmpty($config_entities['unchanged'], 'No dependent configuration entities will be unchanged.');
        // Test that doing a delete of entity1 deletes entity2 since it is dependent
        // on entity1.
        $entity1->delete();
        $this->assertNull($storage->load('entity1'), 'Entity 1 deleted');
        $this->assertNull($storage->load('entity2'), 'Entity 2 deleted');
        // Set a more complicated test where dependencies will be fixed.
        \Drupal::state()->set('config_test.fix_dependencies', [
            $entity1->getConfigDependencyName(),
        ]);
        // Entity1 will be deleted by the test.
        $entity1 = $storage->create([
            'id' => 'entity1',
        ]);
        $entity1->save();
        // Entity2 has a dependency on Entity1 but it can be fixed because
        // \Drupal\config_test\Entity::onDependencyRemoval() will remove the
        // dependency before config entities are deleted.
        $entity2 = $storage->create([
            'id' => 'entity2',
            'dependencies' => [
                'enforced' => [
                    'config' => [
                        $entity1->getConfigDependencyName(),
                    ],
                ],
            ],
        ]);
        $entity2->save();
        // Entity3 will be unchanged because it is dependent on Entity2 which can
        // be fixed.
        $entity3 = $storage->create([
            'id' => 'entity3',
            'dependencies' => [
                'enforced' => [
                    'config' => [
                        $entity2->getConfigDependencyName(),
                    ],
                ],
            ],
        ]);
        $entity3->save();
        // Do a dry run using
        // \Drupal\Core\Config\ConfigManager::getConfigEntitiesToChangeOnDependencyRemoval().
        $config_entities = $config_manager->getConfigEntitiesToChangeOnDependencyRemoval('config', [
            $entity1->getConfigDependencyName(),
        ]);
        $this->assertEmpty($config_entities['delete'], 'No dependent configuration entities will be deleted.');
        $this->assertEquals($entity2->uuid(), reset($config_entities['update'])->uuid(), 'Entity 2 will be updated.');
        $this->assertEquals($entity3->uuid(), reset($config_entities['unchanged'])->uuid(), 'Entity 3 is not changed.');
        // Perform the uninstall.
        $entity1->delete();
        // Test that expected actions have been performed.
        $this->assertNull($storage->load('entity1'), 'Entity 1 deleted');
        $entity2 = $storage->load('entity2');
        $this->assertNotEmpty($entity2, 'Entity 2 not deleted');
        $this->assertEquals([], $entity2->calculateDependencies()
            ->getDependencies()['config'], 'Entity 2 dependencies updated to remove dependency on Entity1.');
        $entity3 = $storage->load('entity3');
        $this->assertNotEmpty($entity3, 'Entity 3 not deleted');
        $this->assertEquals($entity3->calculateDependencies()
            ->getDependencies()['config'], [
            $entity2->getConfigDependencyName(),
        ], 'Entity 3 still depends on Entity 2.');
    }
    
    /**
     * Tests getConfigEntitiesToChangeOnDependencyRemoval() with content entities.
     *
     * At the moment there is no runtime code that calculates configuration
     * dependencies on content entity delete because this calculation is expensive
     * and all content dependencies are soft. This test ensures that the code
     * works for content entities.
     *
     * @see \Drupal\Core\Config\ConfigManager::getConfigEntitiesToChangeOnDependencyRemoval()
     */
    public function testContentEntityDelete() : void {
        $this->installEntitySchema('entity_test');
        
        /** @var \Drupal\Core\Config\ConfigManagerInterface $config_manager */
        $config_manager = \Drupal::service('config.manager');
        $content_entity = EntityTest::create();
        $content_entity->save();
        
        /** @var \Drupal\Core\Config\Entity\ConfigEntityStorage $storage */
        $storage = $this->container
            ->get('entity_type.manager')
            ->getStorage('config_test');
        $entity1 = $storage->create([
            'id' => 'entity1',
            'dependencies' => [
                'enforced' => [
                    'content' => [
                        $content_entity->getConfigDependencyName(),
                    ],
                ],
            ],
        ]);
        $entity1->save();
        $entity2 = $storage->create([
            'id' => 'entity2',
            'dependencies' => [
                'enforced' => [
                    'config' => [
                        $entity1->getConfigDependencyName(),
                    ],
                ],
            ],
        ]);
        $entity2->save();
        // Create a configuration entity that is not in the dependency chain.
        $entity3 = $storage->create([
            'id' => 'entity3',
        ]);
        $entity3->save();
        $config_entities = $config_manager->getConfigEntitiesToChangeOnDependencyRemoval('content', [
            $content_entity->getConfigDependencyName(),
        ]);
        $this->assertEquals($entity1->uuid(), $config_entities['delete'][1]->uuid(), 'Entity 1 will be deleted.');
        $this->assertEquals($entity2->uuid(), $config_entities['delete'][0]->uuid(), 'Entity 2 will be deleted.');
        $this->assertEmpty($config_entities['update'], 'No dependencies of the content entity will be updated.');
        $this->assertEmpty($config_entities['unchanged'], 'No dependencies of the content entity will be unchanged.');
    }
    
    /**
     * Gets a list of identifiers from an array of configuration entities.
     *
     * @param \Drupal\Core\Config\Entity\ConfigEntityInterface[] $dependents
     *   An array of configuration entities.
     *
     * @return array
     *   An array with values of entity_type_id:ID
     */
    protected function getDependentIds(array $dependents) {
        $dependent_ids = [];
        foreach ($dependents as $dependent) {
            $dependent_ids[] = $dependent->getEntityTypeId() . ':' . $dependent->id();
        }
        return $dependent_ids;
    }

}