class EntityReferenceSettingsTest

class EntityReferenceSettingsTest extends KernelTestBase {
    use EntityReferenceFieldCreationTrait;
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'node',
        'taxonomy',
        'field',
        'user',
        'text',
        'entity_test',
        'system',
    ];
    
    /**
     * Testing node type.
     *
     * @var \Drupal\node\Entity\NodeType
     */
    protected $nodeType;
    
    /**
     * Testing vocabulary.
     *
     * @var \Drupal\taxonomy\Entity\Vocabulary
     */
    protected $vocabulary;
    
    /**
     * An entity bundle that is not stored as a configuration entity.
     *
     * @var string
     */
    protected $customBundle;
    
    /**
     * The service name for a logger implementation that collects anything logged.
     *
     * @var string
     */
    protected $testLogServiceName = 'entity_reference_settings_test.logger';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->installEntitySchema('node');
        $this->installEntitySchema('taxonomy_term');
        $this->installEntitySchema('entity_test');
        $this->nodeType = NodeType::create([
            'type' => $this->randomMachineName(),
            'name' => $this->randomString(),
        ]);
        $this->nodeType
            ->save();
        // Create a custom bundle.
        $this->customBundle = 'test_bundle_' . $this->randomMachineName();
        entity_test_create_bundle($this->customBundle, NULL, 'entity_test');
        // Prepare the logger for collecting the expected critical error.
        $this->container
            ->get($this->testLogServiceName)
            ->cleanLogs();
    }
    
    /**
     * Tests that config bundle deletions are mirrored in field config settings.
     */
    public function testConfigTargetBundleDeletion() : void {
        // Create two vocabularies.
        
        /** @var \Drupal\taxonomy\Entity\Vocabulary[] $vocabularies */
        $vocabularies = [];
        for ($i = 0; $i < 2; $i++) {
            $vid = $this->randomMachineName();
            $vocabularies[$i] = Vocabulary::create([
                'name' => $this->randomString(),
                'vid' => $vid,
            ]);
            $vocabularies[$i]->save();
        }
        // Attach an entity reference field to $this->nodeType.
        $name = $this->randomMachineName();
        $label = $this->randomString();
        $handler_settings = [
            'target_bundles' => [
                $vocabularies[0]->id() => $vocabularies[0]->id(),
                $vocabularies[1]->id() => $vocabularies[1]->id(),
            ],
        ];
        $this->createEntityReferenceField('node', $this->nodeType
            ->id(), $name, $label, 'taxonomy_term', 'default', $handler_settings);
        // Check that the 'target_bundle' setting contains the vocabulary.
        $field_config = FieldConfig::loadByName('node', $this->nodeType
            ->id(), $name);
        $actual_handler_settings = $field_config->getSetting('handler_settings');
        $this->assertEquals($handler_settings, $actual_handler_settings);
        // Delete the vocabulary.
        $vocabularies[0]->delete();
        // Ensure that noting is logged.
        $this->assertEmpty($this->container
            ->get($this->testLogServiceName)
            ->cleanLogs());
        // Check that the deleted vocabulary is no longer present in the
        // 'target_bundles' field setting.
        $field_config = FieldConfig::loadByName('node', $this->nodeType
            ->id(), $name);
        $handler_settings = $field_config->getSetting('handler_settings');
        $this->assertEquals([
            $vocabularies[1]->id() => $vocabularies[1]->id(),
        ], $handler_settings['target_bundles']);
        // Delete the other vocabulary.
        $vocabularies[1]->delete();
        // Ensure that field_field_config_presave() logs the expected critical
        // error.
        $log_message = $this->container
            ->get($this->testLogServiceName)
            ->cleanLogs()[0];
        $this->assertEquals(RfcLogLevel::CRITICAL, $log_message[0]);
        $this->assertEquals('The %field_name entity reference field (entity_type: %entity_type, bundle: %bundle) no longer has any valid bundle it can reference. The field is not working correctly anymore and has to be adjusted.', $log_message[1]);
        $this->assertEquals($field_config->getName(), $log_message[2]['%field_name']);
        $this->assertEquals('node', $log_message[2]['%entity_type']);
        $this->assertEquals($this->nodeType
            ->id(), $log_message[2]['%bundle']);
        // Check that the deleted bundle is no longer present in the
        // 'target_bundles' field setting.
        $field_config = FieldConfig::loadByName('node', $this->nodeType
            ->id(), $name);
        $handler_settings = $field_config->getSetting('handler_settings');
        $this->assertEquals([], $handler_settings['target_bundles']);
    }
    
    /**
     * Tests that deletions of custom bundles are mirrored in field settings.
     */
    public function testCustomTargetBundleDeletion() : void {
        // Attach an entity reference field to $this->nodeType.
        $name = $this->randomMachineName();
        $label = $this->randomString();
        $handler_settings = [
            'target_bundles' => [
                $this->customBundle => $this->customBundle,
            ],
        ];
        $this->createEntityReferenceField('node', $this->nodeType
            ->id(), $name, $label, 'entity_test', 'default', $handler_settings);
        // Check that the 'target_bundle' setting contains the custom bundle.
        $field_config = FieldConfig::loadByName('node', $this->nodeType
            ->id(), $name);
        $actual_handler_settings = $field_config->getSetting('handler_settings');
        $this->assertEquals($handler_settings, $actual_handler_settings);
        // Delete the custom bundle.
        entity_test_delete_bundle($this->customBundle, 'entity_test');
        // Ensure that field_field_config_presave() logs the expected critical
        // error.
        $log_message = $this->container
            ->get($this->testLogServiceName)
            ->cleanLogs()[0];
        $this->assertEquals(RfcLogLevel::CRITICAL, $log_message[0]);
        $this->assertEquals('The %field_name entity reference field (entity_type: %entity_type, bundle: %bundle) no longer has any valid bundle it can reference. The field is not working correctly anymore and has to be adjusted.', $log_message[1]);
        $this->assertEquals($field_config->getName(), $log_message[2]['%field_name']);
        $this->assertEquals('node', $log_message[2]['%entity_type']);
        $this->assertEquals($this->nodeType
            ->id(), $log_message[2]['%bundle']);
        // Check that the deleted bundle is no longer present in the
        // 'target_bundles' field setting.
        $field_config = FieldConfig::loadByName('node', $this->nodeType
            ->id(), $name);
        $handler_settings = $field_config->getSetting('handler_settings');
        $this->assertEmpty($handler_settings['target_bundles']);
    }
    
    /**
     * {@inheritdoc}
     */
    public function register(ContainerBuilder $container) {
        parent::register($container);
        $container->register($this->testLogServiceName, BufferingLogger::class)
            ->addTag('logger');
    }

}