diff -u b/core/modules/node/lib/Drupal/node/Tests/NodeAccessLanguageAwareCombinationTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeAccessLanguageAwareCombinationTest.php
--- b/core/modules/node/lib/Drupal/node/Tests/NodeAccessLanguageAwareCombinationTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeAccessLanguageAwareCombinationTest.php
@@ -80,82 +80,80 @@
     // 4. One public with only the Catalan translation private.
     // 5. One public with both the Hungarian and Catalan translations private.
     // 6. One private with both the Hungarian and Catalan translations private.
-    $this->nodes['public_both_public'] = $this->drupalCreateNode(array(
-      'body' => array('hu' => array(array())),
+    $this->nodes['public_both_public'] = $node = $this->drupalCreateNode(array(
+      'body' => array(array()),
       'langcode' => 'hu',
-      'field_private' => array(
-        'hu' => array(0 => array('value' => 0)),
-        'ca' => array(0 => array('value' => 0)),
-      ),
-      'private' => FALSE,
-    ));
-    $this->nodes['private_both_public'] = $this->drupalCreateNode(array(
-      'body' => array('hu' => array(array())),
-      'langcode' => 'hu',
-      'field_private' => array(
-        'hu' => array(0 => array('value' => 0)),
-        'ca' => array(0 => array('value' => 0)),
-      ),
+      'field_private' => array(array('value' => 0)),
+      'private' => FALSE,
+    ));
+    $translation = $node->getTranslation('ca');
+    $translation->field_private[0]->value = 0;
+    $node->save();
+
+    $this->nodes['private_both_public'] = $node = $this->drupalCreateNode(array(
+      'body' => array(array()),
+      'langcode' => 'hu',
+      'field_private' => array(array('value' => 0)),
       'private' => TRUE,
     ));
-    $this->nodes['public_hu_private'] = $this->drupalCreateNode(array(
-      'body' => array('hu' => array(array())),
+    $translation = $node->getTranslation('ca');
+    $translation->field_private[0]->value = 0;
+    $node->save();
+
+    $this->nodes['public_hu_private'] = $node = $this->drupalCreateNode(array(
+      'body' => array(array()),
       'langcode' => 'hu',
-      'field_private' => array(
-        'hu' => array(0 => array('value' => 1)),
-        'ca' => array(0 => array('value' => 0)),
-      ),
+      'field_private' => array(array('value' => 1)),
       'private' => FALSE,
     ));
-    $this->nodes['public_ca_private'] = $this->drupalCreateNode(array(
-      'body' => array('hu' => array(array())),
+    $translation = $node->getTranslation('ca');
+    $translation->field_private[0]->value = 0;
+    $node->save();
+
+    $this->nodes['public_ca_private'] = $node = $this->drupalCreateNode(array(
+      'body' => array(array()),
       'langcode' => 'hu',
-      'field_private' => array(
-        'hu' => array(0 => array('value' => 0)),
-        'ca' => array(0 => array('value' => 1)),
-      ),
+      'field_private' => array(array('value' => 0)),
       'private' => FALSE,
     ));
-    $this->nodes['public_both_private'] = $this->drupalCreateNode(array(
-      'body' => array('hu' => array(array())),
+    $translation = $node->getTranslation('ca');
+    $translation->field_private[0]->value = 1;
+    $node->save();
+
+    $this->nodes['public_both_private'] = $node = $this->drupalCreateNode(array(
+      'body' => array(array()),
       'langcode' => 'hu',
-      'field_private' => array(
-        'hu' => array(0 => array('value' => 1)),
-        'ca' => array(0 => array('value' => 1)),
-      ),
+      'field_private' => array(array('value' => 1)),
       'private' => FALSE,
     ));
-    $this->nodes['private_both_private'] = $this->drupalCreateNode(array(
-      'body' => array('hu' => array(array())),
+    $translation = $node->getTranslation('ca');
+    $translation->field_private[0]->value = 1;
+    $node->save();
+
+    $this->nodes['private_both_private'] = $node = $this->drupalCreateNode(array(
+      'body' => array(array()),
       'langcode' => 'hu',
-      'field_private' => array(
-        'hu' => array(0 => array('value' => 1)),
-        'ca' => array(0 => array('value' => 1)),
-      ),
+      'field_private' => array(array('value' => 1)),
       'private' => TRUE,
     ));
+    $translation = $node->getTranslation('ca');
+    $translation->field_private[0]->value = 1;
+    $node->save();
+
     $this->nodes['public_no_language_private'] = $this->drupalCreateNode(array(
-      'field_private' => array(
-        'und' => array(0 => array('value' => 1)),
-      ),
+      'field_private' => array(array('value' => 1)),
       'private' => FALSE,
     ));
     $this->nodes['public_no_language_public'] = $this->drupalCreateNode(array(
-      'field_private' => array(
-        'und' => array(0 => array('value' => 0)),
-      ),
+      'field_private' => array(array('value' => 0)),
       'private' => FALSE,
     ));
     $this->nodes['private_no_language_private'] = $this->drupalCreateNode(array(
-      'field_private' => array(
-        'und' => array(0 => array('value' => 1)),
-      ),
+      'field_private' => array(array('value' => 1)),
       'private' => TRUE,
     ));
     $this->nodes['private_no_language_public'] = $this->drupalCreateNode(array(
-      'field_private' => array(
-        'und' => array(0 => array('value' => 1)),
-      ),
+      'field_private' => array(array('value' => 1)),
       'private' => TRUE,
     ));
   }
diff -u b/core/modules/node/lib/Drupal/node/Tests/NodeAccessLanguageAwareTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeAccessLanguageAwareTest.php
--- b/core/modules/node/lib/Drupal/node/Tests/NodeAccessLanguageAwareTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeAccessLanguageAwareTest.php
@@ -77,47 +77,47 @@
     // 2. Two nodes with no language specified.
     //   - One public.
     //   - One private.
-    $this->nodes['both_public'] = $this->drupalCreateNode(array(
-      'body' => array('hu' => array(array())),
+    $this->nodes['both_public'] = $node = $this->drupalCreateNode(array(
+      'body' => array(array()),
       'langcode' => 'hu',
-      'field_private' => array(
-        'hu' => array(0 => array('value' => 0)),
-        'ca' => array(0 => array('value' => 0)),
-      )
+      'field_private' => array(array('value' => 0)),
     ));
-    $this->nodes['ca_private'] = $this->drupalCreateNode(array(
-      'body' => array('hu' => array(array())),
+    $translation = $node->getTranslation('ca');
+    $translation->field_private[0]->value = 0;
+    $node->save();
+
+    $this->nodes['ca_private'] = $node = $this->drupalCreateNode(array(
+      'body' => array(array()),
       'langcode' => 'hu',
-      'field_private' => array(
-        'hu' => array(0 => array('value' => 0)),
-        'ca' => array(0 => array('value' => 1)),
-      )
+      'field_private' => array(array('value' => 0)),
     ));
-    $this->nodes['hu_private'] = $this->drupalCreateNode(array(
-      'body' => array('hu' => array(array())),
+    $translation = $node->getTranslation('ca');
+    $translation->field_private[0]->value = 1;
+    $node->save();
+
+    $this->nodes['hu_private'] = $node = $this->drupalCreateNode(array(
+      'body' => array(array()),
       'langcode' => 'hu',
-      'field_private' => array(
-        'hu' => array(0 => array('value' => 1)),
-        'ca' => array(0 => array('value' => 0)),
-      )
+      'field_private' => array(array('value' => 1)),
     ));
-    $this->nodes['both_private'] = $this->drupalCreateNode(array(
-      'body' => array('hu' => array(array())),
+    $translation = $node->getTranslation('ca');
+    $translation->field_private[0]->value = 0;
+    $node->save();
+
+    $this->nodes['both_private'] = $node = $this->drupalCreateNode(array(
+      'body' => array(array()),
       'langcode' => 'hu',
-      'field_private' => array(
-        'hu' => array(0 => array('value' => 1)),
-        'ca' => array(0 => array('value' => 1)),
-      )
+      'field_private' => array(array('value' => 1)),
     ));
+    $translation = $node->getTranslation('ca');
+    $translation->field_private[0]->value = 1;
+    $node->save();
+
     $this->nodes['no_language_public'] = $this->drupalCreateNode(array(
-      'field_private' => array(
-        'und' => array(0 => array('value' => 0)),
-      )
+      'field_private' => array(array('value' => 0)),
     ));
     $this->nodes['no_language_private'] = $this->drupalCreateNode(array(
-      'field_private' => array(
-        'und' => array(0 => array('value' => 1)),
-      )
+      'field_private' => array(array('value' => 1)),
     ));
   }
 
diff -u b/core/modules/node/lib/Drupal/node/Tests/NodeAccessLanguageTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeAccessLanguageTest.php
--- b/core/modules/node/lib/Drupal/node/Tests/NodeAccessLanguageTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeAccessLanguageTest.php
@@ -60,7 +60,7 @@
 
     // Creating a public node with langcode Hungarian, will be saved as
     // the fallback in node access table.
-    $node_public = $this->drupalCreateNode(array('body' => array('hu' => array(array())), 'langcode' => 'hu', 'private' => FALSE));
+    $node_public = $this->drupalCreateNode(array('body' => array(array()), 'langcode' => 'hu', 'private' => FALSE));
     $this->assertTrue($node_public->langcode == 'hu', 'Node created as Hungarian.');
 
     // Tests the default access is provided for the public Hungarian node.
@@ -119,7 +119,7 @@
 
     // Creating a private node with langcode Hungarian, will be saved as
     // the fallback in node access table.
-    $node_public = $this->drupalCreateNode(array('body' => array('hu' => array(array())), 'langcode' => 'hu', 'private' => TRUE));
+    $node_public = $this->drupalCreateNode(array('body' => array(array()), 'langcode' => 'hu', 'private' => TRUE));
     $this->assertTrue($node_public->langcode == 'hu', 'Node created as Hungarian.');
 
     // Tests the default access is not provided for the private Hungarian node.
@@ -177,12 +177,12 @@
 
     // Creating a private node with langcode Hungarian, will be saved as
     // the fallback in node access table.
-    $node_private = $this->drupalCreateNode(array('body' => array('hu' => array(array())), 'langcode' => 'hu', 'private' => TRUE));
+    $node_private = $this->drupalCreateNode(array('body' => array(array()), 'langcode' => 'hu', 'private' => TRUE));
     $this->assertTrue($node_private->langcode == 'hu', 'Node created as Hungarian.');
 
     // Creating a public node with langcode Hungarian, will be saved as
     // the fallback in node access table.
-    $node_public = $this->drupalCreateNode(array('body' => array('hu' => array(array())), 'langcode' => 'hu', 'private' => FALSE));
+    $node_public = $this->drupalCreateNode(array('body' => array(array()), 'langcode' => 'hu', 'private' => FALSE));
     $this->assertTrue($node_public->langcode == 'hu', 'Node created as Hungarian.');
 
     // Creating a public node with no special langcode, like when no language
reverted:
--- b/core/modules/node/tests/modules/node_access_test_language/node_access_test_language.info
+++ /dev/null
@@ -1,7 +0,0 @@
-name = "Node module access tests language"
-description = "Support module for language-aware node access testing."
-package = Testing
-version = VERSION
-core = 8.x
-dependencies[] = options
-hidden = TRUE
diff -u b/core/modules/node/tests/modules/node_access_test_language/node_access_test_language.module b/core/modules/node/tests/modules/node_access_test_language/node_access_test_language.module
--- b/core/modules/node/tests/modules/node_access_test_language/node_access_test_language.module
+++ b/core/modules/node/tests/modules/node_access_test_language/node_access_test_language.module
@@ -8,7 +8,7 @@
  * of the node to be marked as private (viewable only by administrators).
  */
 
-use Drupal\node\Plugin\Core\Entity\Node;
+use Drupal\Core\Entity\EntityInterface;
 
 /**
  * Implements hook_node_grants().
@@ -23,7 +23,7 @@
 /**
  * Implements hook_node_access_records().
  */
-function node_access_test_language_node_access_records(Node $node) {
+function node_access_test_language_node_access_records(EntityInterface $node) {
   $grants = array();
 
   // Create grants for each translation of the node.
only in patch2:
unchanged:
--- /dev/null
+++ b/core/modules/node/tests/modules/node_access_test_language/node_access_test_language.info.yml
@@ -0,0 +1,8 @@
+name: 'Node module access tests language'
+description: 'Support module for language-aware node access testing.'
+package: Testing
+version: VERSION
+core: 8.x
+dependencies:
+- options
+hidden: true