class EntityReferenceFieldDefaultValueTest

class EntityReferenceFieldDefaultValueTest extends BrowserTestBase {
    use SchemaCheckTestTrait;
    
    /**
     * Modules to install.
     *
     * @var array
     */
    protected static $modules = [
        'field_ui',
        'node',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * A user with permission to administer content types, node fields, etc.
     *
     * @var \Drupal\user\UserInterface
     */
    protected $adminUser;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        // Create default content type.
        $this->drupalCreateContentType([
            'type' => 'reference_content',
        ]);
        $this->drupalCreateContentType([
            'type' => 'referenced_content',
        ]);
        // Create admin user.
        $this->adminUser = $this->drupalCreateUser([
            'access content',
            'administer content types',
            'administer node fields',
            'administer node form display',
            'bypass node access',
        ]);
        $this->drupalLogin($this->adminUser);
    }
    
    /**
     * Tests that default values are correctly translated to UUIDs in config.
     */
    public function testEntityReferenceDefaultValue() {
        // Create a node to be referenced.
        $referenced_node = $this->drupalCreateNode([
            'type' => 'referenced_content',
        ]);
        $field_name = mb_strtolower($this->randomMachineName());
        $field_storage = FieldStorageConfig::create([
            'field_name' => $field_name,
            'entity_type' => 'node',
            'type' => 'entity_reference',
            'settings' => [
                'target_type' => 'node',
            ],
        ]);
        $field_storage->save();
        $field = FieldConfig::create([
            'field_storage' => $field_storage,
            'bundle' => 'reference_content',
            'settings' => [
                'handler' => 'default',
                'handler_settings' => [
                    'target_bundles' => [
                        'referenced_content',
                    ],
                    'sort' => [
                        'field' => '_none',
                    ],
                ],
            ],
        ]);
        $field->save();
        // Set created node as default_value.
        $field_edit = [
            'default_value_input[' . $field_name . '][0][target_id]' => $referenced_node->getTitle() . ' (' . $referenced_node->id() . ')',
        ];
        $this->drupalGet('admin/structure/types/manage/reference_content/fields/node.reference_content.' . $field_name);
        $this->submitForm($field_edit, 'Save settings');
        // Check that default value is selected in default value form.
        $this->drupalGet('admin/structure/types/manage/reference_content/fields/node.reference_content.' . $field_name);
        $this->assertSession()
            ->responseContains('name="default_value_input[' . $field_name . '][0][target_id]" value="' . $referenced_node->getTitle() . ' (' . $referenced_node->id() . ')');
        // Check if the ID has been converted to UUID in config entity.
        $config_entity = $this->config('field.field.node.reference_content.' . $field_name)
            ->get();
        $this->assertTrue(isset($config_entity['default_value'][0]['target_uuid']), 'Default value contains target_uuid property');
        $this->assertEquals($referenced_node->uuid(), $config_entity['default_value'][0]['target_uuid'], 'Content uuid and config entity uuid are the same');
        // Ensure the configuration has the expected dependency on the entity that
        // is being used a default value.
        $this->assertEquals([
            $referenced_node->getConfigDependencyName(),
        ], $config_entity['dependencies']['content']);
        // Clear field definitions cache in order to avoid stale cache values.
        \Drupal::service('entity_field.manager')->clearCachedFieldDefinitions();
        // Create a new node to check that UUID has been converted to numeric ID.
        $new_node = Node::create([
            'type' => 'reference_content',
        ]);
        $this->assertEquals($new_node->get($field_name)
            ->offsetGet(0)->target_id, $referenced_node->id());
        // Ensure that the entity reference config schemas are correct.
        $field_config = $this->config('field.field.node.reference_content.' . $field_name);
        $this->assertConfigSchema(\Drupal::service('config.typed'), $field_config->getName(), $field_config->get());
        $field_storage_config = $this->config('field.storage.node.' . $field_name);
        $this->assertConfigSchema(\Drupal::service('config.typed'), $field_storage_config->getName(), $field_storage_config->get());
    }
    
    /**
     * Tests that dependencies due to default values can be removed.
     *
     * @see \Drupal\Core\Field\Plugin\Field\FieldType\EntityReferenceItem::onDependencyRemoval()
     */
    public function testEntityReferenceDefaultConfigValue() {
        // Create a node to be referenced.
        $referenced_node_type = $this->drupalCreateContentType([
            'type' => 'referenced_config_to_delete',
        ]);
        $referenced_node_type2 = $this->drupalCreateContentType([
            'type' => 'referenced_config_to_preserve',
        ]);
        $field_name = mb_strtolower($this->randomMachineName());
        $field_storage = FieldStorageConfig::create([
            'field_name' => $field_name,
            'entity_type' => 'node',
            'type' => 'entity_reference',
            'settings' => [
                'target_type' => 'node_type',
            ],
            'cardinality' => FieldStorageConfig::CARDINALITY_UNLIMITED,
        ]);
        $field_storage->save();
        $field = FieldConfig::create([
            'field_storage' => $field_storage,
            'bundle' => 'reference_content',
            'settings' => [
                'handler' => 'default',
                'handler_settings' => [
                    'sort' => [
                        'field' => '_none',
                    ],
                ],
            ],
        ]);
        $field->save();
        // Set created node as default_value.
        $field_edit = [
            'default_value_input[' . $field_name . '][0][target_id]' => $referenced_node_type->label() . ' (' . $referenced_node_type->id() . ')',
            'default_value_input[' . $field_name . '][1][target_id]' => $referenced_node_type2->label() . ' (' . $referenced_node_type2->id() . ')',
        ];
        $this->drupalGet('admin/structure/types/manage/reference_content/fields/node.reference_content.' . $field_name);
        $this->submitForm($field_edit, 'Save settings');
        // Check that the field has a dependency on the default value.
        $config_entity = $this->config('field.field.node.reference_content.' . $field_name)
            ->get();
        $this->assertContains($referenced_node_type->getConfigDependencyName(), $config_entity['dependencies']['config'], 'The node type referenced_config_to_delete is a dependency of the field.');
        $this->assertContains($referenced_node_type2->getConfigDependencyName(), $config_entity['dependencies']['config'], 'The node type referenced_config_to_preserve is a dependency of the field.');
        // Check that the field does not have a dependency on the default value
        // after deleting the node type.
        $referenced_node_type->delete();
        $config_entity = $this->config('field.field.node.reference_content.' . $field_name)
            ->get();
        $this->assertNotContains($referenced_node_type->getConfigDependencyName(), $config_entity['dependencies']['config'], 'The node type referenced_config_to_delete not a dependency of the field.');
        $this->assertContains($referenced_node_type2->getConfigDependencyName(), $config_entity['dependencies']['config'], 'The node type referenced_config_to_preserve is a dependency of the field.');
    }

}