class EntityApiTest

class EntityApiTest extends EntityKernelTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        foreach (entity_test_entity_types() as $entity_type_id) {
            // The entity_test schema is installed by the parent.
            if ($entity_type_id != 'entity_test') {
                $this->installEntitySchema($entity_type_id);
            }
        }
    }
    
    /**
     * Tests basic CRUD functionality of the Entity API.
     */
    public function testCRUD() : void {
        // All entity variations have to have the same results.
        foreach (entity_test_entity_types() as $entity_type) {
            $this->assertCRUD($entity_type, $this->createUser());
        }
    }
    
    /**
     * Executes a test set for a defined entity type and user.
     *
     * @param string $entity_type
     *   The entity type to run the tests with.
     * @param \Drupal\user\UserInterface $user1
     *   The user to run the tests with.
     *
     * @internal
     */
    protected function assertCRUD(string $entity_type, UserInterface $user1) : void {
        // Create some test entities.
        $entity = $this->container
            ->get('entity_type.manager')
            ->getStorage($entity_type)
            ->create([
            'name' => 'test',
            'user_id' => $user1->id(),
        ]);
        $entity->save();
        $entity = $this->container
            ->get('entity_type.manager')
            ->getStorage($entity_type)
            ->create([
            'name' => 'test2',
            'user_id' => $user1->id(),
        ]);
        $entity->save();
        $entity = $this->container
            ->get('entity_type.manager')
            ->getStorage($entity_type)
            ->create([
            'name' => 'test',
            'user_id' => NULL,
        ]);
        $entity->save();
        
        /** @var \Drupal\Core\Entity\EntityStorageInterface $storage */
        $storage = $this->container
            ->get('entity_type.manager')
            ->getStorage($entity_type);
        $entities = array_values($storage->loadByProperties([
            'name' => 'test',
        ]));
        $this->assertEquals('test', $entities[0]->name->value, "{$entity_type}: Created and loaded entity");
        $this->assertEquals('test', $entities[1]->name->value, "{$entity_type}: Created and loaded entity");
        // Test loading a single entity.
        $loaded_entity = $storage->load($entity->id());
        $this->assertEquals($entity->id(), $loaded_entity->id(), "{$entity_type}: Loaded a single entity by id.");
        // Test deleting an entity.
        $entities = array_values($storage->loadByProperties([
            'name' => 'test2',
        ]));
        $entities[0]->delete();
        $entities = array_values($storage->loadByProperties([
            'name' => 'test2',
        ]));
        $this->assertEquals([], $entities, "{$entity_type}: Entity deleted.");
        // Test updating an entity.
        $entities = array_values($storage->loadByProperties([
            'name' => 'test',
        ]));
        $entities[0]->name->value = 'test3';
        $entities[0]->save();
        $entity = $storage->load($entities[0]->id());
        $this->assertEquals('test3', $entity->name->value, "{$entity_type}: Entity updated.");
        // Try deleting multiple test entities by deleting all.
        $entities = $storage->loadMultiple();
        $storage->delete($entities);
        $all = $storage->loadMultiple();
        $this->assertEmpty($all, "All entities of type '{$entity_type}' should have been deleted.");
        // Verify that all data got deleted.
        $definition = \Drupal::entityTypeManager()->getDefinition($entity_type);
        $connection = Database::getConnection();
        $this->assertEquals(0, (int) $connection->select($definition->getBaseTable())
            ->countQuery()
            ->execute()
            ->fetchField(), 'Base table was emptied');
        if ($data_table = $definition->getDataTable()) {
            $this->assertEquals(0, (int) $connection->select($data_table)
                ->countQuery()
                ->execute()
                ->fetchField(), 'Data table was emptied');
        }
        if ($revision_table = $definition->getRevisionTable()) {
            $this->assertEquals(0, (int) $connection->select($revision_table)
                ->countQuery()
                ->execute()
                ->fetchField(), 'Revision table was emptied');
        }
        if ($revision_data_table = $definition->getRevisionDataTable()) {
            $this->assertEquals(0, (int) $connection->select($revision_data_table)
                ->countQuery()
                ->execute()
                ->fetchField(), 'Revision data table was emptied');
        }
        // Test deleting a list of entities not indexed by entity id.
        $entities = [];
        $entity = $storage->create([
            'name' => 'test',
            'user_id' => $user1->id(),
        ]);
        $entity->save();
        $entities['test'] = $entity;
        $entity = $storage->create([
            'name' => 'test2',
            'user_id' => $user1->id(),
        ]);
        $entity->save();
        $entities['test2'] = $entity;
        $controller = \Drupal::entityTypeManager()->getStorage($entity_type);
        $controller->delete($entities);
        // Verify that entities got deleted.
        $all = $storage->loadMultiple();
        $this->assertEmpty($all, "All entities of type '{$entity_type}' should have been deleted.");
        // Verify that all data got deleted from the tables.
        $definition = \Drupal::entityTypeManager()->getDefinition($entity_type);
        $this->assertEquals(0, (int) $connection->select($definition->getBaseTable())
            ->countQuery()
            ->execute()
            ->fetchField(), 'Base table was emptied');
        if ($data_table = $definition->getDataTable()) {
            $this->assertEquals(0, (int) $connection->select($data_table)
                ->countQuery()
                ->execute()
                ->fetchField(), 'Data table was emptied');
        }
        if ($revision_table = $definition->getRevisionTable()) {
            $this->assertEquals(0, (int) $connection->select($revision_table)
                ->countQuery()
                ->execute()
                ->fetchField(), 'Revision table was emptied');
        }
        if ($revision_data_table = $definition->getRevisionDataTable()) {
            $this->assertEquals(0, (int) $connection->select($revision_data_table)
                ->countQuery()
                ->execute()
                ->fetchField(), 'Revision data table was emptied');
        }
    }
    
    /**
     * Tests that the Entity storage loads the entities in the correct order.
     *
     * Entities should be returned in the same order as the passed IDs.
     */
    public function testLoadMultiple() : void {
        // Entity load.
        $storage = $this->container
            ->get('entity_type.manager')
            ->getStorage('entity_test');
        $ids = [];
        $entity = $storage->create([
            'name' => 'test',
        ]);
        $entity->save();
        $ids[] = $entity->id();
        $entity = $storage->create([
            'name' => 'test2',
        ]);
        $entity->save();
        $ids[] = $entity->id();
        // We load the entities in an initial and reverse order, with both static
        // cache in place and reset, to ensure we always get the same result.
        $entities = $storage->loadMultiple($ids);
        $this->assertEquals($ids, array_keys($entities));
        // Reverse the order and load again.
        $ids = array_reverse($ids);
        $entities = $storage->loadMultiple($ids);
        $this->assertEquals($ids, array_keys($entities));
        // Reverse the order again, reset the cache and load again.
        $storage->resetCache();
        $ids = array_reverse($ids);
        $entities = $storage->loadMultiple($ids);
        $this->assertEquals($ids, array_keys($entities));
        // Entity revision load.
        $storage = $this->container
            ->get('entity_type.manager')
            ->getStorage('entity_test_rev');
        $ids = [];
        $entity = $storage->create([
            'name' => 'test_rev',
        ]);
        $entity->save();
        $ids[] = $entity->getRevisionId();
        $revision = $storage->createRevision($entity, TRUE);
        $revision->save();
        $ids[] = $revision->getRevisionId();
        $entities = $storage->loadMultipleRevisions($ids);
        $this->assertEquals($ids, array_keys($entities));
        // Reverse the order and load again.
        $ids = array_reverse($ids);
        $entities = $storage->loadMultipleRevisions($ids);
        $this->assertEquals($ids, array_keys($entities));
        // Reverse the order again, reset the cache and load again.
        $ids = array_reverse($ids);
        $storage->resetCache();
        $entities = $storage->loadMultipleRevisions($ids);
        $this->assertEquals($ids, array_keys($entities));
    }
    
    /**
     * Tests that exceptions are thrown when saving or deleting an entity.
     */
    public function testEntityStorageExceptionHandling() : void {
        $entity = EntityTest::create([
            'name' => 'test',
        ]);
        try {
            $GLOBALS['entity_test_throw_exception'] = TRUE;
            $entity->save();
            $this->fail('Entity presave EntityStorageException thrown but not caught.');
        } catch (EntityStorageException $e) {
            $this->assertEquals(1, $e->getCode(), 'Entity presave EntityStorageException caught.');
        }
        $entity = EntityTest::create([
            'name' => 'test2',
        ]);
        try {
            unset($GLOBALS['entity_test_throw_exception']);
            $entity->save();
        } catch (EntityStorageException $e) {
            $this->assertNotEquals(1, $e->getCode(), 'Entity presave EntityStorageException caught.');
        }
        $entity = EntityTest::create([
            'name' => 'test3',
        ]);
        $entity->save();
        try {
            $GLOBALS['entity_test_throw_exception'] = TRUE;
            $entity->delete();
            $this->fail('Entity predelete EntityStorageException not thrown.');
        } catch (EntityStorageException $e) {
            $this->assertEquals(2, $e->getCode(), 'Entity predelete EntityStorageException caught.');
        }
        unset($GLOBALS['entity_test_throw_exception']);
        $entity = EntityTest::create([
            'name' => 'test4',
        ]);
        $entity->save();
        try {
            $entity->delete();
        } catch (EntityStorageException $e) {
            $this->assertNotEquals(2, $e->getCode(), 'Entity predelete EntityStorageException thrown.');
        }
    }
    
    /**
     * Tests that resaving a revision with a different revision ID throws an exception.
     */
    public function testUpdateWithRevisionId() : void {
        $storage = \Drupal::entityTypeManager()->getStorage('entity_test_mulrev');
        // Create a new entity.
        
        /** @var \Drupal\entity_test\Entity\EntityTestMulRev $entity */
        $entity = $storage->create([
            'name' => 'revision_test',
        ]);
        $entity->save();
        $this->expectException(EntityStorageException::class);
        $this->expectExceptionMessage("Update existing 'entity_test_mulrev' entity revision while changing the revision ID is not supported.");
        $entity->revision_id = 60;
        $entity->save();
    }
    
    /**
     * Tests that resaving an entity with a different entity ID throws an exception.
     */
    public function testUpdateWithId() : void {
        $storage = \Drupal::entityTypeManager()->getStorage('entity_test_mulrev');
        // Create a new entity.
        
        /** @var \Drupal\entity_test\Entity\EntityTestMulRev $entity */
        $entity = $storage->create([
            'name' => 'revision_test',
        ]);
        $entity->save();
        $this->expectException(EntityStorageException::class);
        $this->expectExceptionMessage("Update existing 'entity_test_mulrev' entity while changing the ID is not supported.");
        $entity->id = 60;
        $entity->save();
    }

}