diff --git a/core/modules/field/src/Tests/EntityReference/EntityReferenceItemTest.php b/core/modules/field/src/Tests/EntityReference/EntityReferenceItemTest.php
index c36c0bd..0144eab 100644
--- a/core/modules/field/src/Tests/EntityReference/EntityReferenceItemTest.php
+++ b/core/modules/field/src/Tests/EntityReference/EntityReferenceItemTest.php
@@ -11,6 +11,7 @@
 use Drupal\Core\Field\FieldItemListInterface;
 use Drupal\Core\Field\FieldItemInterface;
 use Drupal\Core\Language\LanguageInterface;
+use Drupal\entity_test\Entity\EntityTest;
 use Drupal\field\Tests\FieldUnitTestBase;
 use Drupal\taxonomy\Entity\Term;
 use Drupal\taxonomy\Entity\Vocabulary;
@@ -194,6 +195,30 @@ public function testConfigEntityReferenceItem() {
   }

   /**
+   * Tests entity auto create.
+   */
+  public function testEntityAutoCreate() {
+    // The term entity is unsaved here.
+    $term = Term::create(array(
+      'name' => $this->randomMachineName(),
+      'vid' => $this->term->bundle(),
+      'langcode' => LanguageInterface::LANGCODE_NOT_SPECIFIED,
+    ));
+    $entity = EntityTest::create();
+    // Now assign the unsaved term to the field.
+    $entity->field_test_taxonomy_term->entity = $term;
+    $entity->name->value = $this->randomMachineName();
+    // This is equal to storing an entity to tempstore or cache and retrieving
+    // it back. An example for this is node preview.
+    $entity = serialize($entity);
+    $entity = unserialize($entity);
+    // And then the entity.
+    $entity->save();
+    $term = \Drupal::entityManager()->loadEntityByUuid($term->getEntityTypeId(), $term->uuid());
+    $this->assertEqual($entity->field_test_taxonomy_term->entity->id(), $term->id());
+  }
+
+  /**
    * Test saving order sequence doesn't matter.
    */
   public function testEntitySaveOrder() {