Issue #2174509 by amateescu, chx: Drupal\Core\Field\FieldDefinition::getSchema() is broken.

core/lib/Drupal/Core/Field/FieldDefinition.php

@@ -24,6 +24,11 @@ class FieldDefinition extends ListDefinition implements FieldDefinitionInterface
    */
   protected $schema;
 
+  /**
+   * @var array
+   */
+  protected $indexes = array();
+
   /**
    * Creates a new field definition.
    *
@@ -286,7 +291,7 @@ public function getDefaultValue(EntityInterface $entity) {
   public function getSchema() {
     if (!isset($this->schema)) {
       // Get the schema from the field item class.
-      $definition = \Drupal::service('plugin.manager.field.field_type')->getDefinition($this->getFieldType());
+      $definition = \Drupal::service('plugin.manager.field.field_type')->getDefinition($this->getType());
       $class = $definition['class'];
       $schema = $class::schema($this);
       // Fill in default values for optional entries.

core/modules/field/lib/Drupal/field/Tests/TestItemTest.php

@@ -7,6 +7,7 @@
 
 namespace Drupal\field\Tests;
 
+use Drupal\Core\Field\FieldDefinition;
 use Drupal\Core\Field\FieldItemInterface;
 use Drupal\Core\Field\FieldItemListInterface;
 
@@ -83,6 +84,23 @@ public function testTestItem() {
     $entity->save();
     $entity = entity_load('entity_test', $id);
     $this->assertEqual($entity->{$this->field_name}->value, $new_value);
+
+    // Test the schema for this field type.
+    $expected_schema = array(
+      'columns' => array(
+        'value' => array(
+          'type' => 'int',
+          'size' => 'medium',
+          'not null' => FALSE,
+        ),
+      ),
+      'indexes' => array(
+        'value' => array('value'),
+      ),
+      'foreign keys' => array(),
+    );
+    $field_schema = FieldDefinition::create('test_field')->getSchema();
+    $this->assertEqual($field_schema, $expected_schema);
   }
 
 }