--- /dev/null
+<?php
+
+/**
+ * @file
+ * Helper module for the Entity Reference tests.
+ */
+
+use Drupal\Core\Entity\EntityTypeInterface;
+use Drupal\Core\Field\BaseFieldDefinition;
+
+/**
+ * Implements hook_entity_base_field_info().
+ */
+function entity_reference_test_entity_base_field_info(EntityTypeInterface $entity_type) {
+ $fields = [];
+
+ if ($entity_type->id() === 'entity_test') {
+ $fields['user_role'] = BaseFieldDefinition::create('entity_reference')
+ ->setLabel(t('User role'))
+ ->setDescription(t('The role of the associated user.'))
+ ->setSetting('target_type', 'user_role')
+ ->setSetting('handler', 'default');
+ }
+
+ return $fields;
+}
+
+/**
+ * Implements hook_entity_base_field_info_alter().
+ */
+function entity_reference_test_entity_base_field_info_alter(&$fields, EntityTypeInterface $entity_type) {
+ if ($entity_type->id() === 'entity_test') {
+ // Allow user_id field to use configurable widget.
+ $fields['user_id']
+ ->setSetting('handler', 'default')
+ ->setDisplayOptions('form', [
+ 'type' => 'entity_reference_autocomplete',
+ 'weight' => 0,
+ ])
+ ->setDisplayConfigurable('form', TRUE);
+ }
+}