class EntityReferenceItemTest

class EntityReferenceItemTest extends FieldKernelTestBase {
    use EntityReferenceFieldCreationTrait;
    
    /**
     * Modules to install.
     *
     * @var array
     */
    protected static $modules = [
        'node',
        'comment',
        'file',
        'taxonomy',
        'text',
        'filter',
        'views',
        'field',
    ];
    
    /**
     * The taxonomy vocabulary to test with.
     *
     * @var \Drupal\taxonomy\VocabularyInterface
     */
    protected $vocabulary;
    
    /**
     * The taxonomy term to test with.
     *
     * @var \Drupal\taxonomy\TermInterface
     */
    protected $term;
    
    /**
     * The test entity with a string ID.
     *
     * @var \Drupal\entity_test\Entity\EntityTestStringId
     */
    protected $entityStringId;
    
    /**
     * Sets up the test.
     */
    protected function setUp() : void {
        parent::setUp();
        $this->installEntitySchema('entity_test_string_id');
        $this->installEntitySchema('taxonomy_term');
        $this->installEntitySchema('node');
        $this->installEntitySchema('comment');
        $this->installEntitySchema('file');
        $this->installSchema('comment', [
            'comment_entity_statistics',
        ]);
        $this->installSchema('node', [
            'node_access',
        ]);
        $this->vocabulary = Vocabulary::create([
            'name' => $this->randomMachineName(),
            'vid' => $this->randomMachineName(),
            'langcode' => LanguageInterface::LANGCODE_NOT_SPECIFIED,
        ]);
        $this->vocabulary
            ->save();
        $this->term = Term::create([
            'name' => $this->randomMachineName(),
            'vid' => $this->vocabulary
                ->id(),
            'langcode' => LanguageInterface::LANGCODE_NOT_SPECIFIED,
        ]);
        $this->term
            ->save();
        NodeType::create([
            'type' => $this->randomMachineName(),
            'name' => $this->randomString(),
        ])
            ->save();
        CommentType::create([
            'id' => $this->randomMachineName(),
            'label' => $this->randomString(),
            'target_entity_type_id' => 'node',
        ])
            ->save();
        $this->entityStringId = EntityTestStringId::create([
            'id' => $this->randomMachineName(),
        ]);
        $this->entityStringId
            ->save();
        // Use the util to create an instance.
        $this->createEntityReferenceField('entity_test', 'entity_test', 'field_test_taxonomy_term', 'Test content entity reference', 'taxonomy_term');
        $this->createEntityReferenceField('entity_test', 'entity_test', 'field_test_entity_test_string_id', 'Test content entity reference with string ID', 'entity_test_string_id');
        $this->createEntityReferenceField('entity_test', 'entity_test', 'field_test_taxonomy_vocabulary', 'Test config entity reference', 'taxonomy_vocabulary');
        $this->createEntityReferenceField('entity_test', 'entity_test', 'field_test_node', 'Test node entity reference', 'node', 'default', [], FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED);
        $this->createEntityReferenceField('entity_test', 'entity_test', 'field_test_user', 'Test user entity reference', 'user');
        $this->createEntityReferenceField('entity_test', 'entity_test', 'field_test_comment', 'Test comment entity reference', 'comment');
        $this->createEntityReferenceField('entity_test', 'entity_test', 'field_test_file', 'Test file entity reference', 'file');
        $this->createEntityReferenceField('entity_test_string_id', 'entity_test_string_id', 'field_test_entity_test', 'Test content entity reference with string ID', 'entity_test');
    }
    
    /**
     * Tests the entity reference field type for referencing content entities.
     */
    public function testContentEntityReferenceItem() : void {
        $tid = $this->term
            ->id();
        // Just being able to create the entity like this verifies a lot of code.
        $entity = EntityTest::create();
        $entity->field_test_taxonomy_term->target_id = $tid;
        $entity->name->value = $this->randomMachineName();
        $entity->save();
        $entity = EntityTest::load($entity->id());
        $this->assertInstanceOf(FieldItemListInterface::class, $entity->field_test_taxonomy_term);
        $this->assertInstanceOf(FieldItemInterface::class, $entity->field_test_taxonomy_term[0]);
        $this->assertEquals($tid, $entity->field_test_taxonomy_term->target_id);
        $this->assertEquals($this->term
            ->getName(), $entity->field_test_taxonomy_term->entity
            ->getName());
        $this->assertEquals($tid, $entity->field_test_taxonomy_term->entity
            ->id());
        $this->assertEquals($this->term
            ->uuid(), $entity->field_test_taxonomy_term->entity
            ->uuid());
        // Verify that the label for the target ID property definition is correct.
        $label = $entity->field_test_taxonomy_term
            ->getFieldDefinition()
            ->getFieldStorageDefinition()
            ->getPropertyDefinition('target_id')
            ->getLabel();
        $this->assertInstanceOf(TranslatableMarkup::class, $label);
        $this->assertEquals('Taxonomy term ID', $label->render());
        // Change the name of the term via the reference.
        $new_name = $this->randomMachineName();
        $entity->field_test_taxonomy_term->entity
            ->setName($new_name);
        $entity->field_test_taxonomy_term->entity
            ->save();
        // Verify it is the correct name.
        $term = Term::load($tid);
        $this->assertEquals($new_name, $term->getName());
        // Make sure the computed term reflects updates to the term id.
        $term2 = Term::create([
            'name' => $this->randomMachineName(),
            'vid' => $this->term
                ->bundle(),
            'langcode' => LanguageInterface::LANGCODE_NOT_SPECIFIED,
        ]);
        $term2->save();
        // Test all the possible ways of assigning a value.
        $entity->field_test_taxonomy_term->target_id = $term->id();
        $this->assertEquals($term->id(), $entity->field_test_taxonomy_term->entity
            ->id());
        $this->assertEquals($term->getName(), $entity->field_test_taxonomy_term->entity
            ->getName());
        $entity->field_test_taxonomy_term = [
            [
                'target_id' => $term2->id(),
            ],
        ];
        $this->assertEquals($term2->id(), $entity->field_test_taxonomy_term->entity
            ->id());
        $this->assertEquals($term2->getName(), $entity->field_test_taxonomy_term->entity
            ->getName());
        // Test value assignment via the computed 'entity' property.
        $entity->field_test_taxonomy_term->entity = $term;
        $this->assertEquals($term->id(), $entity->field_test_taxonomy_term->target_id);
        $this->assertEquals($term->getName(), $entity->field_test_taxonomy_term->entity
            ->getName());
        $entity->field_test_taxonomy_term = [
            [
                'entity' => $term2,
            ],
        ];
        $this->assertEquals($term2->id(), $entity->field_test_taxonomy_term->target_id);
        $this->assertEquals($term2->getName(), $entity->field_test_taxonomy_term->entity
            ->getName());
        // Test assigning an invalid item throws an exception.
        try {
            $entity->field_test_taxonomy_term = [
                'target_id' => 'invalid',
                'entity' => $term2,
            ];
            $this->fail('Assigning an invalid item throws an exception.');
        } catch (\Exception $e) {
            $this->assertInstanceOf(\InvalidArgumentException::class, $e);
        }
        // Delete terms so we have nothing to reference and try again
        $term->delete();
        $term2->delete();
        $entity = EntityTest::create([
            'name' => $this->randomMachineName(),
        ]);
        $entity->save();
        // Test the generateSampleValue() method.
        $entity = EntityTest::create();
        $entity->field_test_taxonomy_term
            ->generateSampleItems();
        $entity->field_test_taxonomy_vocabulary
            ->generateSampleItems();
        $this->entityValidateAndSave($entity);
        // Tests that setting an integer target ID together with an entity object
        // succeeds and does not cause any exceptions. There is no assertion here,
        // as the assignment should not throw any exceptions and if it does the
        // test will fail.
        // @see \Drupal\Core\Field\Plugin\Field\FieldType\EntityReferenceItem::setValue().
        $user = User::create([
            'name' => $this->randomString(),
        ]);
        $user->save();
        $entity = EntityTest::create([
            'user_id' => [
                'target_id' => (int) $user->id(),
                'entity' => $user,
            ],
        ]);
    }
    
    /**
     * Tests the ::generateSampleValue() method.
     */
    public function testGenerateSampleValue() : void {
        $entity = EntityTest::create();
        // Test while a term exists.
        $entity->field_test_taxonomy_term
            ->generateSampleItems();
        $this->assertInstanceOf(TermInterface::class, $entity->field_test_taxonomy_term->entity);
        $this->entityValidateAndSave($entity);
        // Delete the term and test again.
        $this->term
            ->delete();
        $entity->field_test_taxonomy_term
            ->generateSampleItems();
        $this->assertInstanceOf(TermInterface::class, $entity->field_test_taxonomy_term->entity);
        $this->entityValidateAndSave($entity);
    }
    
    /**
     * Tests the ::generateSampleValue() method when it has a circular reference.
     */
    public function testGenerateSampleValueCircularReference() : void {
        // Delete the existing entity.
        $this->entityStringId
            ->delete();
        $entity_storage = \Drupal::entityTypeManager()->getStorage('entity_test');
        $entity = $entity_storage->createWithSampleValues('entity_test');
        $this->assertInstanceOf(EntityTestStringId::class, $entity->field_test_entity_test_string_id->entity);
        $this->assertInstanceOf(EntityTest::class, $entity->field_test_entity_test_string_id->entity->field_test_entity_test->entity);
    }
    
    /**
     * Tests referencing content entities with string IDs.
     */
    public function testContentEntityReferenceItemWithStringId() : void {
        $entity = EntityTest::create();
        $entity->field_test_entity_test_string_id->target_id = $this->entityStringId
            ->id();
        $entity->save();
        $storage = \Drupal::entityTypeManager()->getStorage('entity_test');
        $storage->resetCache();
        $this->assertEquals($this->entityStringId
            ->id(), $storage->load($entity->id())->field_test_entity_test_string_id->target_id);
        // Verify that the label for the target ID property definition is correct.
        $label = $entity->field_test_taxonomy_term
            ->getFieldDefinition()
            ->getFieldStorageDefinition()
            ->getPropertyDefinition('target_id')
            ->getLabel();
        $this->assertInstanceOf(TranslatableMarkup::class, $label);
        $this->assertEquals('Taxonomy term ID', $label->render());
    }
    
    /**
     * Tests the entity reference field type for referencing config entities.
     */
    public function testConfigEntityReferenceItem() : void {
        $referenced_entity_id = $this->vocabulary
            ->id();
        // Just being able to create the entity like this verifies a lot of code.
        $entity = EntityTest::create();
        $entity->field_test_taxonomy_vocabulary->target_id = $referenced_entity_id;
        $entity->name->value = $this->randomMachineName();
        $entity->save();
        $entity = EntityTest::load($entity->id());
        $this->assertInstanceOf(FieldItemListInterface::class, $entity->field_test_taxonomy_vocabulary);
        $this->assertInstanceOf(FieldItemInterface::class, $entity->field_test_taxonomy_vocabulary[0]);
        $this->assertEquals($referenced_entity_id, $entity->field_test_taxonomy_vocabulary->target_id);
        $this->assertEquals($this->vocabulary
            ->label(), $entity->field_test_taxonomy_vocabulary->entity
            ->label());
        $this->assertEquals($referenced_entity_id, $entity->field_test_taxonomy_vocabulary->entity
            ->id());
        $this->assertEquals($this->vocabulary
            ->uuid(), $entity->field_test_taxonomy_vocabulary->entity
            ->uuid());
        // Change the name of the term via the reference.
        $new_name = $this->randomMachineName();
        $entity->field_test_taxonomy_vocabulary->entity
            ->set('name', $new_name);
        $entity->field_test_taxonomy_vocabulary->entity
            ->save();
        // Verify it is the correct name.
        $vocabulary = Vocabulary::load($referenced_entity_id);
        $this->assertEquals($new_name, $vocabulary->label());
        // Make sure the computed term reflects updates to the term id.
        $vocabulary2 = $vocabulary = Vocabulary::create([
            'name' => $this->randomMachineName(),
            'vid' => $this->randomMachineName(),
            'langcode' => LanguageInterface::LANGCODE_NOT_SPECIFIED,
        ]);
        $vocabulary2->save();
        $entity->field_test_taxonomy_vocabulary->target_id = $vocabulary2->id();
        $this->assertEquals($vocabulary2->id(), $entity->field_test_taxonomy_vocabulary->entity
            ->id());
        $this->assertEquals($vocabulary2->label(), $entity->field_test_taxonomy_vocabulary->entity
            ->label());
        // Delete terms so we have nothing to reference and try again
        $this->vocabulary
            ->delete();
        $vocabulary2->delete();
        $entity = EntityTest::create([
            'name' => $this->randomMachineName(),
        ]);
        $entity->save();
    }
    
    /**
     * Tests entity auto create.
     */
    public function testEntityAutoCreate() : void {
        // The term entity is unsaved here.
        $term = Term::create([
            'name' => $this->randomMachineName(),
            'vid' => $this->term
                ->bundle(),
            'langcode' => LanguageInterface::LANGCODE_NOT_SPECIFIED,
        ]);
        $entity = EntityTest::create();
        // Now assign the unsaved term to the field.
        $entity->field_test_taxonomy_term->entity = $term;
        $entity->name->value = $this->randomMachineName();
        // This is equal to storing an entity to tempstore or cache and retrieving
        // it back. An example for this is node preview.
        $entity = serialize($entity);
        $entity = unserialize($entity);
        // And then the entity.
        $entity->save();
        $term = \Drupal::service('entity.repository')->loadEntityByUuid($term->getEntityTypeId(), $term->uuid());
        $this->assertEquals($entity->field_test_taxonomy_term->entity
            ->id(), $term->id());
    }
    
    /**
     * Tests saving order sequence doesn't matter.
     */
    public function testEntitySaveOrder() : void {
        // The term entity is unsaved here.
        $term = Term::create([
            'name' => $this->randomMachineName(),
            'vid' => $this->term
                ->bundle(),
            'langcode' => LanguageInterface::LANGCODE_NOT_SPECIFIED,
        ]);
        $entity = EntityTest::create();
        // Now assign the unsaved term to the field.
        $entity->field_test_taxonomy_term->entity = $term;
        $entity->name->value = $this->randomMachineName();
        // Now get the field value.
        $value = $entity->get('field_test_taxonomy_term');
        $this->assertArrayNotHasKey('target_id', $value);
        $this->assertNull($entity->field_test_taxonomy_term->target_id);
        // And then set it.
        $entity->field_test_taxonomy_term = $value;
        // Now save the term.
        $term->save();
        // And then the entity.
        $entity->save();
        $this->assertEquals($term->id(), $entity->field_test_taxonomy_term->entity
            ->id());
    }
    
    /**
     * Tests that the 'handler' field setting stores the proper plugin ID.
     */
    public function testSelectionHandlerSettings() : void {
        $field_name = $this->randomMachineName();
        $field_storage = FieldStorageConfig::create([
            'field_name' => $field_name,
            'entity_type' => 'entity_test',
            'type' => 'entity_reference',
            'settings' => [
                'target_type' => 'entity_test',
            ],
        ]);
        $field_storage->save();
        // Do not specify any value for the 'handler' setting in order to verify
        // that the default handler with the correct derivative is used.
        $field = FieldConfig::create([
            'field_storage' => $field_storage,
            'bundle' => 'entity_test',
        ]);
        $field->save();
        $field = FieldConfig::load($field->id());
        $this->assertEquals('default:entity_test', $field->getSetting('handler'));
        // Change the target_type in the field storage, and check that the handler
        // was correctly reassigned in the field.
        $field_storage->setSetting('target_type', 'entity_test_rev');
        $field_storage->save();
        $field = FieldConfig::load($field->id());
        $this->assertEquals('default:entity_test_rev', $field->getSetting('handler'));
        // Change the handler to another, non-derivative plugin.
        $field->setSetting('handler', 'views');
        $field->save();
        $field = FieldConfig::load($field->id());
        $this->assertEquals('views', $field->getSetting('handler'));
        // Change the target_type in the field storage again, and check that the
        // non-derivative handler was unchanged.
        $field_storage->setSetting('target_type', 'entity_test_rev');
        $field_storage->save();
        $field = FieldConfig::load($field->id());
        $this->assertEquals('views', $field->getSetting('handler'));
        // Check that selection handlers aren't changed during sync.
        $field = FieldConfig::create([
            'field_storage' => $field_storage,
            'bundle' => 'entity_test',
            'settings' => [
                'handler' => 'fake:thing',
            ],
            'isSyncing' => TRUE,
        ]);
        $this->assertEquals('fake:thing', $field->getSetting('handler'));
    }
    
    /**
     * Tests ValidReferenceConstraint with newly created and unsaved entities.
     */
    public function testAutocreateValidation() : void {
        // The term entity is unsaved here.
        $term = Term::create([
            'name' => $this->randomMachineName(),
            'vid' => $this->term
                ->bundle(),
            'langcode' => LanguageInterface::LANGCODE_NOT_SPECIFIED,
        ]);
        $entity = EntityTest::create([
            'field_test_taxonomy_term' => [
                'entity' => $term,
                'target_id' => NULL,
            ],
        ]);
        $errors = $entity->validate();
        // Using target_id of NULL is valid with an unsaved entity.
        $this->assertCount(0, $errors);
        // Using target_id of NULL is not valid with a saved entity.
        $term->save();
        $entity = EntityTest::create([
            'field_test_taxonomy_term' => [
                'entity' => $term,
                'target_id' => NULL,
            ],
        ]);
        $errors = $entity->validate();
        $this->assertCount(1, $errors);
        $this->assertEquals('This value should not be null.', $errors[0]->getMessage());
        $this->assertEquals('field_test_taxonomy_term.0', $errors[0]->getPropertyPath());
        // This should rectify the issue, favoring the entity over the target_id.
        $entity->save();
        $errors = $entity->validate();
        $this->assertCount(0, $errors);
        // Test with an unpublished and unsaved node.
        $title = $this->randomString();
        $node = Node::create([
            'title' => $title,
            'type' => 'node',
            'status' => NodeInterface::NOT_PUBLISHED,
        ]);
        $entity = EntityTest::create([
            'field_test_node' => [
                'entity' => $node,
            ],
        ]);
        $errors = $entity->validate();
        $this->assertCount(1, $errors);
        $this->assertEquals(new FormattableMarkup('This entity (%type: %label) cannot be referenced.', [
            '%type' => 'node',
            '%label' => $title,
        ]), $errors[0]->getMessage());
        $this->assertEquals('field_test_node.0.entity', $errors[0]->getPropertyPath());
        // Publish the node and try again.
        $node->setPublished();
        $errors = $entity->validate();
        $this->assertCount(0, $errors);
        // Test with a mix of valid and invalid nodes.
        $unsaved_unpublished_node_title = $this->randomString();
        $unsaved_unpublished_node = Node::create([
            'title' => $unsaved_unpublished_node_title,
            'type' => 'node',
            'status' => NodeInterface::NOT_PUBLISHED,
        ]);
        $saved_unpublished_node_title = $this->randomString();
        $saved_unpublished_node = Node::create([
            'title' => $saved_unpublished_node_title,
            'type' => 'node',
            'status' => NodeInterface::NOT_PUBLISHED,
        ]);
        $saved_unpublished_node->save();
        $saved_published_node_title = $this->randomString();
        $saved_published_node = Node::create([
            'title' => $saved_published_node_title,
            'type' => 'node',
            'status' => NodeInterface::PUBLISHED,
        ]);
        $saved_published_node->save();
        $entity = EntityTest::create([
            'field_test_node' => [
                [
                    'entity' => $unsaved_unpublished_node,
                ],
                [
                    'target_id' => $saved_unpublished_node->id(),
                ],
                [
                    'target_id' => $saved_published_node->id(),
                ],
            ],
        ]);
        $errors = $entity->validate();
        $this->assertCount(2, $errors);
        $this->assertEquals(new FormattableMarkup('This entity (%type: %label) cannot be referenced.', [
            '%type' => 'node',
            '%label' => $unsaved_unpublished_node_title,
        ]), $errors[0]->getMessage());
        $this->assertEquals('field_test_node.0.entity', $errors[0]->getPropertyPath());
        $this->assertEquals(new FormattableMarkup('This entity (%type: %label) cannot be referenced.', [
            '%type' => 'node',
            '%label' => $saved_unpublished_node->id(),
        ]), $errors[1]->getMessage());
        $this->assertEquals('field_test_node.1.target_id', $errors[1]->getPropertyPath());
        // Publish one of the nodes and try again.
        $saved_unpublished_node->setPublished();
        $saved_unpublished_node->save();
        $errors = $entity->validate();
        $this->assertCount(1, $errors);
        $this->assertEquals(new FormattableMarkup('This entity (%type: %label) cannot be referenced.', [
            '%type' => 'node',
            '%label' => $unsaved_unpublished_node_title,
        ]), $errors[0]->getMessage());
        $this->assertEquals('field_test_node.0.entity', $errors[0]->getPropertyPath());
        // Publish the last invalid node and try again.
        $unsaved_unpublished_node->setPublished();
        $errors = $entity->validate();
        $this->assertCount(0, $errors);
        // Test with an unpublished and unsaved comment.
        $title = $this->randomString();
        $comment = Comment::create([
            'subject' => $title,
            'comment_type' => 'comment',
            'status' => 0,
        ]);
        $entity = EntityTest::create([
            'field_test_comment' => [
                'entity' => $comment,
            ],
        ]);
        $errors = $entity->validate();
        $this->assertCount(1, $errors);
        $this->assertEquals(new FormattableMarkup('This entity (%type: %label) cannot be referenced.', [
            '%type' => 'comment',
            '%label' => $title,
        ]), $errors[0]->getMessage());
        $this->assertEquals('field_test_comment.0.entity', $errors[0]->getPropertyPath());
        // Publish the comment and try again.
        $comment->setPublished();
        $errors = $entity->validate();
        $this->assertCount(0, $errors);
        // Test with an inactive and unsaved user.
        $name = $this->randomString();
        $user = User::create([
            'name' => $name,
            'status' => 0,
        ]);
        $entity = EntityTest::create([
            'field_test_user' => [
                'entity' => $user,
            ],
        ]);
        $errors = $entity->validate();
        $this->assertCount(1, $errors);
        $this->assertEquals(new FormattableMarkup('This entity (%type: %label) cannot be referenced.', [
            '%type' => 'user',
            '%label' => $name,
        ]), $errors[0]->getMessage());
        $this->assertEquals('field_test_user.0.entity', $errors[0]->getPropertyPath());
        // Activate the user and try again.
        $user->activate();
        $errors = $entity->validate();
        $this->assertCount(0, $errors);
        // Test with a temporary and unsaved file.
        $filename = $this->randomMachineName() . '.txt';
        $file = File::create([
            'filename' => $filename,
            'status' => 0,
        ]);
        $entity = EntityTest::create([
            'field_test_file' => [
                'entity' => $file,
            ],
        ]);
        $errors = $entity->validate();
        $this->assertCount(1, $errors);
        $this->assertEquals(new FormattableMarkup('This entity (%type: %label) cannot be referenced.', [
            '%type' => 'file',
            '%label' => $filename,
        ]), $errors[0]->getMessage());
        $this->assertEquals('field_test_file.0.entity', $errors[0]->getPropertyPath());
        // Set the file as permanent and try again.
        $file->setPermanent();
        $errors = $entity->validate();
        $this->assertCount(0, $errors);
    }

}