--- /dev/null
+<?php
+
+namespace Drupal\Tests\field\Kernel\EntityReference;
+
+use Drupal\Core\Cache\Cache;
+use Drupal\Core\Cache\CacheableMetadata;
+use Drupal\Core\Field\FieldStorageDefinitionInterface;
+use Drupal\Core\Field\Plugin\Field\FieldFormatter\EntityReferenceEntityFormatter;
+use Drupal\field\Entity\FieldConfig;
+use Drupal\field\Entity\FieldStorageConfig;
+use Drupal\field\Tests\EntityReference\EntityReferenceTestTrait;
+use Drupal\filter\Entity\FilterFormat;
+use Drupal\KernelTests\Core\Entity\EntityKernelTestBase;
+use Drupal\user\Entity\Role;
+use Drupal\user\RoleInterface;
+use Drupal\entity_test\Entity\EntityTestLabel;
+
+/**
+ * Tests the formatters functionality.
+ *
+ * @group entity_reference
+ */
+class EntityReferenceFormatterTest extends EntityKernelTestBase {
+
+ use EntityReferenceTestTrait;
+
+ /**
+ * The entity type used in this test.
+ *
+ * @var string
+ */
+ protected $entityType = 'entity_test';
+
+ /**
+ * The bundle used in this test.
+ *
+ * @var string
+ */
+ protected $bundle = 'entity_test';
+
+ /**
+ * The name of the field used in this test.
+ *
+ * @var string
+ */
+ protected $fieldName = 'field_test';
+
+ /**
+ * The entity to be referenced in this test.
+ *
+ * @var \Drupal\Core\Entity\EntityInterface
+ */
+ protected $referencedEntity;
+
+ /**
+ * The entity that is not yet saved to its persistent storage to be referenced
+ * in this test.
+ *
+ * @var \Drupal\Core\Entity\EntityInterface
+ */
+ protected $unsavedReferencedEntity;
+
+ protected function setUp() {
+ parent::setUp();
+
+ // Use Classy theme for testing markup output.
+ \Drupal::service('theme_handler')->install(['classy']);
+ $this->config('system.theme')->set('default', 'classy')->save();
+ $this->installEntitySchema('entity_test');
+ // Grant the 'view test entity' permission.
+ $this->installConfig(['user']);
+ Role::load(RoleInterface::ANONYMOUS_ID)
+ ->grantPermission('view test entity')
+ ->save();
+
+ // The label formatter rendering generates links, so build the router.
+ $this->container->get('router.builder')->rebuild();
+
+ $this->createEntityReferenceField($this->entityType, $this->bundle, $this->fieldName, 'Field test', $this->entityType, 'default', [], FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED);
+
+ // Set up a field, so that the entity that'll be referenced bubbles up a
+ // cache tag when rendering it entirely.
+ FieldStorageConfig::create([
+ 'field_name' => 'body',
+ 'entity_type' => $this->entityType,
+ 'type' => 'text',
+ 'settings' => [],
+ ])->save();
+ FieldConfig::create([
+ 'entity_type' => $this->entityType,
+ 'bundle' => $this->bundle,
+ 'field_name' => 'body',
+ 'label' => 'Body',
+ ])->save();
+ entity_get_display($this->entityType, $this->bundle, 'default')
+ ->setComponent('body', [
+ 'type' => 'text_default',
+ 'settings' => [],
+ ])
+ ->save();
+
+ FilterFormat::create([
+ 'format' => 'full_html',
+ 'name' => 'Full HTML',
+ ])->save();
+
+ // Create the entity to be referenced.
+ $this->referencedEntity = $this->container->get('entity_type.manager')
+ ->getStorage($this->entityType)
+ ->create(['name' => $this->randomMachineName()]);
+ $this->referencedEntity->body = [
+ 'value' => '<p>Hello, world!</p>',
+ 'format' => 'full_html',
+ ];
+ $this->referencedEntity->save();
+
+ // Create another entity to be referenced but do not save it.
+ $this->unsavedReferencedEntity = $this->container->get('entity_type.manager')
+ ->getStorage($this->entityType)
+ ->create(['name' => $this->randomMachineName()]);
+ $this->unsavedReferencedEntity->body = [
+ 'value' => '<p>Hello, unsaved world!</p>',
+ 'format' => 'full_html',
+ ];
+ }
+
+ /**
+ * Assert inaccessible items don't change the data of the fields.
+ */
+ public function testAccess() {
+ // Revoke the 'view test entity' permission for this test.
+ Role::load(RoleInterface::ANONYMOUS_ID)
+ ->revokePermission('view test entity')
+ ->save();
+
+ $field_name = $this->fieldName;
+
+ $referencing_entity = $this->container->get('entity_type.manager')
+ ->getStorage($this->entityType)
+ ->create(['name' => $this->randomMachineName()]);
+ $referencing_entity->save();
+ $referencing_entity->{$field_name}->entity = $this->referencedEntity;
+
+ // Assert user doesn't have access to the entity.
+ $this->assertFalse($this->referencedEntity->access('view'), 'Current user does not have access to view the referenced entity.');
+
+ $formatter_manager = $this->container->get('plugin.manager.field.formatter');
+
+ // Get all the existing formatters.
+ foreach ($formatter_manager->getOptions('entity_reference') as $formatter => $name) {
+ // Set formatter type for the 'full' view mode.
+ entity_get_display($this->entityType, $this->bundle, 'default')
+ ->setComponent($field_name, [
+ 'type' => $formatter,
+ ])
+ ->save();
+
+ // Invoke entity view.
+ entity_view($referencing_entity, 'default');
+
+ // Verify the un-accessible item still exists.
+ $this->assertEqual($referencing_entity->{$field_name}->target_id, $this->referencedEntity->id(), format_string('The un-accessible item still exists after @name formatter was executed.', ['@name' => $name]));
+ }
+ }
+
+ /**
+ * Tests the merging of cache metadata.
+ */
+ public function testCustomCacheTagFormatter() {
+ /** @var \Drupal\Core\Render\RendererInterface $renderer */
+ $renderer = $this->container->get('renderer');
+ $formatter = 'entity_reference_custom_cache_tag';
+ $build = $this->buildRenderArray([$this->referencedEntity], $formatter);
+
+ $renderer->renderRoot($build);
+ $this->assertTrue(in_array('custom_cache_tag', $build['#cache']['tags']));
+ }
+
+ /**
+ * Tests the ID formatter.
+ */
+ public function testIdFormatter() {
+ $formatter = 'entity_reference_entity_id';
+ $build = $this->buildRenderArray([$this->referencedEntity, $this->unsavedReferencedEntity], $formatter);
+
+ $this->assertEqual($build[0]['#plain_text'], $this->referencedEntity->id(), sprintf('The markup returned by the %s formatter is correct for an item with a saved entity.', $formatter));
+ $this->assertEqual($build[0]['#cache']['tags'], $this->referencedEntity->getCacheTags(), sprintf('The %s formatter has the expected cache tags.', $formatter));
+ $this->assertTrue(!isset($build[1]), sprintf('The markup returned by the %s formatter is correct for an item with a unsaved entity.', $formatter));
+ }
+
+ /**
+ * Tests the entity formatter.
+ */
+ public function testEntityFormatter() {
+ /** @var \Drupal\Core\Render\RendererInterface $renderer */
+ $renderer = $this->container->get('renderer');
+ $formatter = 'entity_reference_entity_view';
+ $build = $this->buildRenderArray([$this->referencedEntity, $this->unsavedReferencedEntity], $formatter);
+
+ // Test the first field item.
+ $expected_rendered_name_field_1 = '
+ <div class="field field--name-name field--type-string field--label-hidden field__item">' . $this->referencedEntity->label() . '</div>
+ ';
+ $expected_rendered_body_field_1 = '
+ <div class="clearfix text-formatted field field--name-body field--type-text field--label-above">
+ <div class="field__label">Body</div>
+ <div class="field__item"><p>Hello, world!</p></div>
+ </div>
+';
+ $renderer->renderRoot($build[0]);
+ $this->assertEqual($build[0]['#markup'], 'default | ' . $this->referencedEntity->label() . $expected_rendered_name_field_1 . $expected_rendered_body_field_1, sprintf('The markup returned by the %s formatter is correct for an item with a saved entity.', $formatter));
+ $expected_cache_tags = Cache::mergeTags(\Drupal::entityManager()->getViewBuilder($this->entityType)->getCacheTags(), $this->referencedEntity->getCacheTags());
+ $expected_cache_tags = Cache::mergeTags($expected_cache_tags, FilterFormat::load('full_html')->getCacheTags());
+ $this->assertEqual($build[0]['#cache']['tags'], $expected_cache_tags, format_string('The @formatter formatter has the expected cache tags.', ['@formatter' => $formatter]));
+
+ // Test the second field item.
+ $expected_rendered_name_field_2 = '
+ <div class="field field--name-name field--type-string field--label-hidden field__item">' . $this->unsavedReferencedEntity->label() . '</div>
+ ';
+ $expected_rendered_body_field_2 = '
+ <div class="clearfix text-formatted field field--name-body field--type-text field--label-above">
+ <div class="field__label">Body</div>
+ <div class="field__item"><p>Hello, unsaved world!</p></div>
+ </div>
+';
+
+ $renderer->renderRoot($build[1]);
+ $this->assertEqual($build[1]['#markup'], 'default | ' . $this->unsavedReferencedEntity->label() . $expected_rendered_name_field_2 . $expected_rendered_body_field_2, sprintf('The markup returned by the %s formatter is correct for an item with a unsaved entity.', $formatter));
+ }
+
+ /**
+ * Tests the recursive rendering protection of the entity formatter.
+ */
+ public function testEntityFormatterRecursiveRendering() {
+ /** @var \Drupal\Core\Render\RendererInterface $renderer */
+ $renderer = $this->container->get('renderer');
+ $formatter = 'entity_reference_entity_view';
+ $view_builder = $this->entityManager->getViewBuilder($this->entityType);
+
+ // Set the default view mode to use the 'entity_reference_entity_view'
+ // formatter.
+ entity_get_display($this->entityType, $this->bundle, 'default')
+ ->setComponent($this->fieldName, [
+ 'type' => $formatter,
+ ])
+ ->save();
+
+ $referencing_entity_1 = entity_create($this->entityType, ['name' => $this->randomMachineName()]);
+ $referencing_entity_1->save();
+
+ // Create a self-reference.
+ $referencing_entity_1->{$this->fieldName}->entity = $referencing_entity_1;
+ $referencing_entity_1->save();
+
+ // Check that the recursive rendering stops after it reaches the specified
+ // limit.
+ $build = $view_builder->view($referencing_entity_1, 'default');
+ $output = $renderer->renderRoot($build);
+
+ // The title of entity_test entities is printed twice by default, so we have
+ // to multiply the formatter's recursive rendering protection limit by 2.
+ // Additionally, we have to take into account 2 additional occurrences of
+ // the entity title because we're rendering the full entity, not just the
+ // reference field.
+ $expected_occurrences = EntityReferenceEntityFormatter::RECURSIVE_RENDER_LIMIT * 2 + 2;
+ $actual_occurrences = substr_count($output, $referencing_entity_1->name->value);
+ $this->assertEqual($actual_occurrences, $expected_occurrences);
+
+ // Repeat the process with another entity in order to check that the
+ // 'recursive_render_id' counter is generated properly.
+ $referencing_entity_2 = entity_create($this->entityType, ['name' => $this->randomMachineName()]);
+ $referencing_entity_2->save();
+ $referencing_entity_2->{$this->fieldName}->entity = $referencing_entity_2;
+ $referencing_entity_2->save();
+
+ $build = $view_builder->view($referencing_entity_2, 'default');
+ $output = $renderer->renderRoot($build);
+
+ $actual_occurrences = substr_count($output, $referencing_entity_2->name->value);
+ $this->assertEqual($actual_occurrences, $expected_occurrences);
+
+ // Now render both entities at the same time and check again.
+ $build = $view_builder->viewMultiple([$referencing_entity_1, $referencing_entity_2], 'default');
+ $output = $renderer->renderRoot($build);
+
+ $actual_occurrences = substr_count($output, $referencing_entity_1->name->value);
+ $this->assertEqual($actual_occurrences, $expected_occurrences);
+
+ $actual_occurrences = substr_count($output, $referencing_entity_2->name->value);
+ $this->assertEqual($actual_occurrences, $expected_occurrences);
+ }
+
+ /**
+ * Renders the same entity referenced from different places.
+ */
+ public function testEntityReferenceRecursiveProtectionWithManyRenderedEntities() {
+ $formatter = 'entity_reference_entity_view';
+ $view_builder = $this->entityManager->getViewBuilder($this->entityType);
+
+ // Set the default view mode to use the 'entity_reference_entity_view'
+ // formatter.
+ entity_get_display($this->entityType, $this->bundle, 'default')
+ ->setComponent($this->fieldName, [
+ 'type' => $formatter,
+ ])
+ ->save();
+
+ $storage = $this->entityManager->getStorage($this->entityType);
+ /** @var \Drupal\Core\Entity\ContentEntityInterface $referenced_entity */
+ $referenced_entity = $storage->create(['name' => $this->randomMachineName()]);
+
+ $range = range(0, 30);
+ $referencing_entities = array_map(function () use ($storage, $referenced_entity) {
+ $referencing_entity = $storage->create([
+ 'name' => $this->randomMachineName(),
+ $this->fieldName => $referenced_entity,
+ ]);
+ $referencing_entity->save();
+ return $referencing_entity;
+ }, $range);
+
+ $build = $view_builder->viewMultiple($referencing_entities, 'default');
+ $output = $this->render($build);
+
+ // The title of entity_test entities is printed twice by default, so we have
+ // to multiply the formatter's recursive rendering protection limit by 2.
+ // Additionally, we have to take into account 2 additional occurrences of
+ // the entity title because we're rendering the full entity, not just the
+ // reference field.
+ $expected_occurrences = 30 * 2 + 2;
+ $actual_occurrences = substr_count($output, $referenced_entity->get('name')->value);
+ $this->assertEquals($expected_occurrences, $actual_occurrences);
+ }
+
+
+ /**
+ * Tests the label formatter.
+ */
+ public function testLabelFormatter() {
+ $this->installEntitySchema('entity_test_label');
+ /** @var \Drupal\Core\Render\RendererInterface $renderer */
+ $renderer = $this->container->get('renderer');
+ $formatter = 'entity_reference_label';
+
+ // The 'link' settings is TRUE by default.
+ $build = $this->buildRenderArray([$this->referencedEntity, $this->unsavedReferencedEntity], $formatter);
+
+ $expected_field_cacheability = [
+ 'contexts' => [],
+ 'tags' => [],
+ 'max-age' => Cache::PERMANENT,
+ ];
+ $this->assertEqual($build['#cache'], $expected_field_cacheability, 'The field render array contains the entity access cacheability metadata');
+ $expected_item_1 = [
+ '#type' => 'link',
+ '#title' => $this->referencedEntity->label(),
+ '#url' => $this->referencedEntity->urlInfo(),
+ '#options' => $this->referencedEntity->urlInfo()->getOptions(),
+ '#cache' => [
+ 'contexts' => [
+ 'user.permissions',
+ ],
+ 'tags' => $this->referencedEntity->getCacheTags(),
+ ],
+ ];
+ $this->assertEqual($renderer->renderRoot($build[0]), $renderer->renderRoot($expected_item_1), sprintf('The markup returned by the %s formatter is correct for an item with a saved entity.', $formatter));
+ $this->assertEqual(CacheableMetadata::createFromRenderArray($build[0]), CacheableMetadata::createFromRenderArray($expected_item_1));
+
+ // The second referenced entity is "autocreated", therefore not saved and
+ // lacking any URL info.
+ $expected_item_2 = [
+ '#plain_text' => $this->unsavedReferencedEntity->label(),
+ '#cache' => [
+ 'contexts' => [
+ 'user.permissions',
+ ],
+ 'tags' => $this->unsavedReferencedEntity->getCacheTags(),
+ 'max-age' => Cache::PERMANENT,
+ ],
+ ];
+ $this->assertEqual($build[1], $expected_item_2, sprintf('The render array returned by the %s formatter is correct for an item with a unsaved entity.', $formatter));
+
+ // Test with the 'link' setting set to FALSE.
+ $build = $this->buildRenderArray([$this->referencedEntity, $this->unsavedReferencedEntity], $formatter, ['link' => FALSE]);
+ $this->assertEqual($build[0]['#plain_text'], $this->referencedEntity->label(), sprintf('The markup returned by the %s formatter is correct for an item with a saved entity.', $formatter));
+ $this->assertEqual($build[1]['#plain_text'], $this->unsavedReferencedEntity->label(), sprintf('The markup returned by the %s formatter is correct for an item with a unsaved entity.', $formatter));
+
+ // Test an entity type that doesn't have any link templates, which means
+ // \Drupal\Core\Entity\EntityInterface::urlInfo() will throw an exception
+ // and the label formatter will output only the label instead of a link.
+ $field_storage_config = FieldStorageConfig::loadByName($this->entityType, $this->fieldName);
+ $field_storage_config->setSetting('target_type', 'entity_test_label');
+ $field_storage_config->save();
+
+ $referenced_entity_with_no_link_template = EntityTestLabel::create([
+ 'name' => $this->randomMachineName(),
+ ]);
+ $referenced_entity_with_no_link_template->save();
+
+ $build = $this->buildRenderArray([$referenced_entity_with_no_link_template], $formatter, ['link' => TRUE]);
+ $this->assertEqual($build[0]['#plain_text'], $referenced_entity_with_no_link_template->label(), sprintf('The markup returned by the %s formatter is correct for an entity type with no valid link template.', $formatter));
+ }
+
+ /**
+ * Sets field values and returns a render array as built by
+ * \Drupal\Core\Field\FieldItemListInterface::view().
+ *
+ * @param \Drupal\Core\Entity\EntityInterface[] $referenced_entities
+ * An array of entity objects that will be referenced.
+ * @param string $formatter
+ * The formatted plugin that will be used for building the render array.
+ * @param array $formatter_options
+ * Settings specific to the formatter. Defaults to the formatter's default
+ * settings.
+ *
+ * @return array
+ * A render array.
+ */
+ protected function buildRenderArray(array $referenced_entities, $formatter, $formatter_options = []) {
+ // Create the entity that will have the entity reference field.
+ $referencing_entity = $this->container->get('entity_type.manager')
+ ->getStorage($this->entityType)
+ ->create(['name' => $this->randomMachineName()]);
+
+ $items = $referencing_entity->get($this->fieldName);
+
+ // Assign the referenced entities.
+ foreach ($referenced_entities as $referenced_entity) {
+ $items[] = ['entity' => $referenced_entity];
+ }
+
+ // Build the renderable array for the field.
+ return $items->view(['type' => $formatter, 'settings' => $formatter_options]);
+ }
+
+}