Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

core/modules/text/src/Plugin/Field/FieldFormatter/TextDefaultFormatter.php

@@ -31,7 +31,7 @@ class TextDefaultFormatter extends FormatterBase {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode) {
     $elements = array();
 
     // The ProcessedText element already handles cache context & tag bubbling.

core/modules/text/src/Plugin/Field/FieldFormatter/TextTrimmedFormatter.php

@@ -70,7 +70,7 @@ class TextTrimmedFormatter extends FormatterBase {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode) {
     $elements = array();
 
     $render_as_summary = function (&$element) {

core/modules/text/src/Plugin/Field/FieldType/TextItemBase.php

@@ -43,7 +43,6 @@ abstract class TextItemBase extends FieldItemBase {
    * {@inheritdoc}
    */
   public function applyDefaultValue($notify = TRUE) {
-    // Default to a simple \Drupal\Component\Utility\SafeMarkup::checkPlain().
     // @todo: Add in the filter default format here.
     $this->setValue(array('format' => NULL), $notify);
     return $this;

core/modules/text/src/Plugin/Field/FieldWidget/TextareaWithSummaryWidget.php

@@ -57,7 +57,7 @@ class TextareaWithSummaryWidget extends TextareaWidget {
   public function settingsSummary() {
     $summary = parent::settingsSummary();
 
-    $summary[] = t('Number of summary rows: !rows', array('!rows' => $this->getSetting('summary_rows')));
+    $summary[] = t('Number of summary rows: @rows', array('@rows' => $this->getSetting('summary_rows')));
 
     return $summary;
   }
@@ -92,7 +92,15 @@ class TextareaWithSummaryWidget extends TextareaWidget {
    */
   public function errorElement(array $element, ConstraintViolationInterface $violation, array $form, FormStateInterface $form_state) {
     $element = parent::errorElement($element, $violation, $form, $form_state);
-    return ($element === FALSE) ? FALSE : $element[$violation->arrayPropertyPath[0]];
+    if ($element === FALSE) {
+      return FALSE;
+    }
+    elseif (isset($violation->arrayPropertyPath[0])) {
+      return $element[$violation->arrayPropertyPath[0]];
+    }
+    else {
+      return $element;
+    }
   }
 
 }

core/modules/text/src/Tests/Migrate/MigrateTextConfigsTest.php

@@ -19,13 +19,6 @@ class MigrateTextConfigsTest extends MigrateDrupal6TestBase {
 
   use SchemaCheckTestTrait;
 
-  /**
-   * Modules to enable.
-   *
-   * @var array
-   */
-  public static $modules = array('text');
-
   /**
    * {@inheritdoc}
    */

core/modules/text/src/Tests/TextFieldTest.php

@@ -67,6 +67,65 @@ class TextFieldTest extends StringFieldTest {
     }
   }
 
+  /**
+   * Test required long text with file upload.
+   */
+  function testRequiredLongTextWithFileUpload() {
+    // Create a text field.
+    $text_field_name = 'text_long';
+    $field_storage = entity_create('field_storage_config', array(
+      'field_name' => $text_field_name,
+      'entity_type' => 'entity_test',
+      'type' => 'text_with_summary',
+    ));
+    $field_storage->save();
+    entity_create('field_config', array(
+      'field_storage' => $field_storage,
+      'bundle' => 'entity_test',
+      'label' => $this->randomMachineName() . '_label',
+      'required' => TRUE,
+    ))->save();
+
+    // Create a file field.
+    $file_field_name = 'file_field';
+    $field_storage = entity_create('field_storage_config', array(
+      'field_name' => $file_field_name,
+      'entity_type' => 'entity_test',
+      'type' => 'file'
+    ));
+    $field_storage->save();
+    entity_create('field_config', array(
+      'field_storage' => $field_storage,
+      'bundle' => 'entity_test',
+      'label' => $this->randomMachineName() . '_label',
+    ))->save();
+
+    entity_get_form_display('entity_test', 'entity_test', 'default')
+      ->setComponent($text_field_name, array(
+        'type' => 'text_textarea_with_summary',
+      ))
+      ->setComponent($file_field_name, array(
+        'type' => 'file_generic',
+      ))
+      ->save();
+    entity_get_display('entity_test', 'entity_test', 'full')
+      ->setComponent($text_field_name)
+      ->setComponent($file_field_name)
+      ->save();
+
+    $test_file = current($this->drupalGetTestFiles('text'));
+    $edit['files[file_field_0]'] = drupal_realpath($test_file->uri);
+    $this->drupalPostForm('entity_test/add', $edit, 'Upload');
+    $this->assertResponse(200);
+    $edit = array(
+      'text_long[0][value]' => 'Long text'
+    );
+    $this->drupalPostForm(NULL, $edit, 'Save');
+    $this->assertResponse(200);
+    $this->drupalGet('entity_test/1');
+    $this->assertText('Long text');
+  }
+
   /**
    * Test widgets.
    */

core/modules/text/src/TextProcessed.php

@@ -41,7 +41,7 @@ class TextProcessed extends TypedData {
   /**
    * Implements \Drupal\Core\TypedData\TypedDataInterface::getValue().
    */
-  public function getValue($langcode = NULL) {
+  public function getValue() {
     if ($this->processed !== NULL) {
       return $this->processed;
     }
@@ -49,8 +49,7 @@ class TextProcessed extends TypedData {
     $item = $this->getParent();
     $text = $item->{($this->definition->getSetting('text source'))};
 
-    // Avoid running check_markup() or
-    // \Drupal\Component\Utility\SafeMarkup::checkPlain() on empty strings.
+    // Avoid running check_markup() on empty strings.
     if (!isset($text) || $text === '') {
       $this->processed = '';
     }