--- /dev/null
+<?php
+
+namespace Drupal\Tests\field\Functional\EntityReference;
+
+use Drupal\Component\Utility\Unicode;
+use Drupal\Tests\SchemaCheckTestTrait;
+use Drupal\field\Entity\FieldConfig;
+use Drupal\field\Entity\FieldStorageConfig;
+use Drupal\node\Entity\Node;
+use Drupal\Tests\BrowserTestBase;
+
+/**
+ * Tests entity reference field default values storage in CMI.
+ *
+ * @group entity_reference
+ */
+class EntityReferenceFieldDefaultValueTest extends BrowserTestBase {
+
+ use SchemaCheckTestTrait;
+
+ /**
+ * Modules to install.
+ *
+ * @var array
+ */
+ public static $modules = ['field_ui', 'node'];
+
+ /**
+ * A user with permission to administer content types, node fields, etc.
+ *
+ * @var \Drupal\user\UserInterface
+ */
+ protected $adminUser;
+
+ protected function setUp() {
+ 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']);
+
+ $field_name = Unicode::strtolower($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->drupalPostForm('admin/structure/types/manage/reference_content/fields/node.reference_content.' . $field_name, $field_edit, t('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->assertRaw('name="default_value_input[' . $field_name . '][0][target_id]" value="' . $referenced_node->getTitle() . ' (' . $referenced_node->id() . ')', 'The default value is selected in instance settings page');
+
+ // 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');
+ $this->assertEqual($config_entity['default_value'][0]['target_uuid'], $referenced_node->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.
+ $this->assertEqual([$referenced_node->getConfigDependencyName()], $config_entity['dependencies']['content']);
+
+ // Clear field definitions cache in order to avoid stale cache values.
+ \Drupal::entityManager()->clearCachedFieldDefinitions();
+
+ // Create a new node to check that UUID has been converted to numeric ID.
+ $new_node = Node::create(['type' => 'reference_content']);
+ $this->assertEqual($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']);
+
+ $field_name = Unicode::strtolower($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->drupalPostForm('admin/structure/types/manage/reference_content/fields/node.reference_content.' . $field_name, $field_edit, t('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();
+ $this->assertTrue(in_array($referenced_node_type->getConfigDependencyName(), $config_entity['dependencies']['config'], TRUE), 'The node type referenced_config_to_delete is a dependency of the field.');
+ $this->assertTrue(in_array($referenced_node_type2->getConfigDependencyName(), $config_entity['dependencies']['config'], TRUE), '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();
+ $this->assertFalse(in_array($referenced_node_type->getConfigDependencyName(), $config_entity['dependencies']['config'], TRUE), 'The node type referenced_config_to_delete not a dependency of the field.');
+ $this->assertTrue(in_array($referenced_node_type2->getConfigDependencyName(), $config_entity['dependencies']['config'], TRUE), 'The node type referenced_config_to_preserve is a dependency of the field.');
+ }
+
+}