diff -u b/core/modules/field_sql_storage/lib/Drupal/field_sql_storage/Tests/FieldSqlStorageTest.php b/core/modules/field_sql_storage/lib/Drupal/field_sql_storage/Tests/FieldSqlStorageTest.php
--- b/core/modules/field_sql_storage/lib/Drupal/field_sql_storage/Tests/FieldSqlStorageTest.php
+++ b/core/modules/field_sql_storage/lib/Drupal/field_sql_storage/Tests/FieldSqlStorageTest.php
@@ -426,7 +426,7 @@
    * Test foreign key support.
    */
   function testFieldSqlStorageForeignKeys() {
-    // Create a 'shape' field, with a configurable foreign key (see 
+    // Create a 'shape' field, with a configurable foreign key (see
     // field_test_field_schema()).
     $field_name = 'testfield';
     $foreign_key_name = 'shape';
@@ -452,9 +452,9 @@
     $schema = drupal_get_schema(_field_sql_storage_tablename($field), TRUE);
-    $this->assertEqual(count($schema['foreign keys']), 1, "There is 1 foreign key in the schema");
+    $this->assertEqual(count($schema['foreign keys']), 1, 'There is 1 foreign key in the schema');
     $foreign_key = reset($schema['foreign keys']);
     $foreign_key_column = _field_sql_storage_columnname($field['field_name'], $foreign_key_name);
     $this->assertEqual($foreign_key['table'], $foreign_key_name, 'Foreign key table name preserved in the schema');
     $this->assertEqual($foreign_key['columns'][$foreign_key_column], 'id', 'Foreign key column name preserved in the schema');
   }
-  
+
 }