diff --git a/core/modules/entity_reference/src/Tests/EntityReferenceAdminTest.php b/core/modules/entity_reference/src/Tests/EntityReferenceAdminTest.php
index eb8b85f..0956896 100644
--- a/core/modules/entity_reference/src/Tests/EntityReferenceAdminTest.php
+++ b/core/modules/entity_reference/src/Tests/EntityReferenceAdminTest.php
@@ -9,6 +9,7 @@
 
 use Drupal\Core\Entity\Entity;
 use Drupal\field_ui\Tests\FieldUiTestTrait;
+use Drupal\node\Entity\Node;
 use Drupal\simpletest\WebTestBase;
 use Drupal\taxonomy\Entity\Vocabulary;
 
@@ -247,22 +248,59 @@ public function testFieldAdminHandler() {
     );
     $this->drupalPostForm(NULL, $edit, t('Save settings'));
 
-    // Create a node.
-    $edit = array(
-      'title[0][value]' => 'Foo Node',
-    );
-    $this->drupalPostForm('node/add/' . $this->type, $edit, t('Save'));
+    // Create nodes.
+    $node1 = Node::create([
+      'type' => $this->type,
+      'title' => 'Foo Node',
+    ]);
+    $node1->save();
+    $node2 = Node::create([
+      'type' => $this->type,
+      'title' => 'Foo Node',
+    ]);
+    $node2->save();
 
     // Try to add a new node and fill the entity reference field.
     $this->drupalGet('node/add/' . $this->type);
     $result = $this->xpath('//input[@name="field_test_entity_ref_field[0][target_id]" and contains(@data-autocomplete-path, "/entity_reference_autocomplete/node/views/")]');
     $target_url = $this->getAbsoluteUrl($result[0]['data-autocomplete-path']);
     $this->drupalGet($target_url, array('query' => array('q' => 'Foo')));
-    $this->assertRaw('Foo');
+    $this->assertRaw($node1->getTitle() . ' (' . $node1->id() . ')');
+    $this->assertRaw($node2->getTitle() . ' (' . $node2->id() . ')');
+
+    $edit = array(
+      'title[0][value]' => 'Example',
+      'field_test_entity_ref_field[0][target_id]' => 'Test'
+    );
+    $this->drupalPostForm('node/add/' . $this->type, $edit, t('Save'));
+
+    // Assert that entity reference autocomplete field is validated.
+    $this->assertText(t('1 error has been found: Test Entity Reference Field'), 'Node save failed when required entity reference field was not correctly filled.');
+    $this->assertText(t('There are no entities matching "@entity"', ['@entity' => 'Test']));
+
+    $edit = array(
+      'title[0][value]' => 'Test',
+      'field_test_entity_ref_field[0][target_id]' => $node1->getTitle()
+    );
+    $this->drupalPostForm('node/add/' . $this->type, $edit, t('Save'));
+
+    // Assert the results multiple times to avoid sorting problem of nodes with
+    // the same title.
+    $this->assertText(t('1 error has been found: Test Entity Reference Field'));
+    $this->assertText(t('Multiple entities match this reference;'));
+    $this->assertText(t("@node1", ['@node1' => $node1->getTitle() . ' (' . $node1->id() . ')']));
+    $this->assertText(t("@node2", ['@node2' => $node2->getTitle() . ' (' . $node2->id() . ')']));
+
+    $edit = array(
+      'title[0][value]' => 'Test',
+      'field_test_entity_ref_field[0][target_id]' => $node1->getTitle() . '(' . $node1->id() . ')'
+    );
+    $this->drupalPostForm('node/add/' . $this->type, $edit, t('Save'));
+    $this->assertLink($node1->getTitle());
   }
 
   /**
-   * Tests the formatters for the Entity References
+   * Tests the formatters for the Entity References.
    */
   public function testAvailableFormatters() {
     // Create a new vocabulary.
diff --git a/core/modules/views/src/Plugin/EntityReferenceSelection/ViewsSelection.php b/core/modules/views/src/Plugin/EntityReferenceSelection/ViewsSelection.php
index 7b4d424..b87dbfb 100644
--- a/core/modules/views/src/Plugin/EntityReferenceSelection/ViewsSelection.php
+++ b/core/modules/views/src/Plugin/EntityReferenceSelection/ViewsSelection.php
@@ -7,17 +7,10 @@
 
 namespace Drupal\views\Plugin\EntityReferenceSelection;
 
-use Drupal\Core\Database\Query\SelectInterface;
-use Drupal\Core\Entity\EntityManagerInterface;
-use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Entity\Plugin\EntityReferenceSelection\SelectionBase;
 use Drupal\Core\Form\FormStateInterface;
-use Drupal\Core\Entity\EntityReferenceSelection\SelectionInterface;
-use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
-use Drupal\Core\Plugin\PluginBase;
-use Drupal\Core\Session\AccountInterface;
 use Drupal\Core\Url;
 use Drupal\views\Views;
-use Symfony\Component\DependencyInjection\ContainerInterface;
 
 /**
  * Plugin implementation of the 'selection' entity_reference.
@@ -29,28 +22,7 @@
  *   weight = 0
  * )
  */
-class ViewsSelection extends PluginBase implements SelectionInterface, ContainerFactoryPluginInterface {
-
-  /**
-   * The entity manager.
-   *
-   * @var \Drupal\Core\Entity\EntityManagerInterface
-   */
-  protected $entityManager;
-
-  /**
-   * The module handler service.
-   *
-   * @var \Drupal\Core\Extension\ModuleHandlerInterface
-   */
-  protected $moduleHandler;
-
-  /**
-   * The current user.
-   *
-   * @var \Drupal\Core\Session\AccountInterface
-   */
-  protected $currentUser;
+class ViewsSelection extends SelectionBase {
 
   /**
    * The loaded View object.
@@ -60,44 +32,6 @@ class ViewsSelection extends PluginBase implements SelectionInterface, Container
   protected $view;
 
   /**
-   * Constructs a new ViewsSelection object.
-   *
-   * @param array $configuration
-   *   A configuration array containing information about the plugin instance.
-   * @param string $plugin_id
-   *   The plugin_id for the plugin instance.
-   * @param mixed $plugin_definition
-   *   The plugin implementation definition.
-   * @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager
-   *   The entity manager service.
-   * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
-   *   The module handler service.
-   * @param \Drupal\Core\Session\AccountInterface $current_user
-   *   The current user.
-   */
-  public function __construct(array $configuration, $plugin_id, $plugin_definition, EntityManagerInterface $entity_manager, ModuleHandlerInterface $module_handler, AccountInterface $current_user) {
-    parent::__construct($configuration, $plugin_id, $plugin_definition);
-
-    $this->entityManager = $entity_manager;
-    $this->moduleHandler = $module_handler;
-    $this->currentUser = $current_user;
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
-    return new static(
-      $configuration,
-      $plugin_id,
-      $plugin_definition,
-      $container->get('entity.manager'),
-      $container->get('module_handler'),
-      $container->get('current_user')
-    );
-  }
-
-  /**
    * {@inheritdoc}
    */
   public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
@@ -162,16 +96,6 @@ public function buildConfigurationForm(array $form, FormStateInterface $form_sta
   }
 
   /**
-   * {@inheritdoc}
-   */
-  public function validateConfigurationForm(array &$form, FormStateInterface $form_state) { }
-
-  /**
-   * {@inheritdoc}
-   */
-  public function submitConfigurationForm(array &$form, FormStateInterface $form_state) { }
-
-  /**
    * Initializes a view.
    *
    * @param string|null $match
@@ -227,7 +151,7 @@ public function getReferenceableEntities($match = NULL, $match_operator = 'CONTA
 
     $return = array();
     if ($result) {
-      foreach($this->view->result as $row) {
+      foreach ($this->view->result as $row) {
         $entity = $row->_entity;
         $return[$entity->bundle()][$entity->id()] = $entity->label();
       }
@@ -260,18 +184,6 @@ public function validateReferenceableEntities(array $ids) {
   }
 
   /**
-   * {@inheritdoc}
-   */
-  public function validateAutocompleteInput($input, &$element, FormStateInterface $form_state, $form, $strict = TRUE) {
-    return NULL;
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public function entityQueryAlter(SelectInterface $query) {}
-
-  /**
    * Element validate; Check View is valid.
    */
   public static function settingsFormValidate($element, FormStateInterface $form_state, $form) {