diff --git a/core/tests/Drupal/Tests/Core/Plugin/CategorizingPluginManagerTraitTest.php b/core/tests/Drupal/Tests/Core/Plugin/CategorizingPluginManagerTraitTest.php
index 65703b6..7c151c0 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/CategorizingPluginManagerTraitTest.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/CategorizingPluginManagerTraitTest.php
@@ -21,7 +21,7 @@ class CategorizingPluginManagerTraitTest extends UnitTestCase {
     /**
      * The plugin manager to test.
      *
-     * @var \Drupal\Component\Plugin\CategorizingPluginManagerInterface | \PHPUnit_Framework_MockObject_MockObject
+     * @var \Drupal\Component\Plugin\CategorizingPluginManagerInterface|\PHPUnit_Framework_MockObject_MockObject
      */
     protected $pluginManager;
 
@@ -39,7 +39,7 @@ protected function setUp() {
     public function testGetCategories() {
       $this->assertSame(array_values($this->pluginManager->getCategories()), [
           'fruits',
-          'vegetables'
+          'vegetables',
         ]);
     }
 
@@ -66,27 +66,27 @@ public function testGetGroupedDefinitions() {
      */
     public function testProcessDefinitionCategory() {
       // Existing category.
-      $definition = array(
+      $definition = [
         'label' => 'some',
         'provider' => 'core',
         'category' => 'bag',
-      );
+      ];
       $this->pluginManager->processDefinition($definition, 'some');
       $this->assertSame($definition['category'], 'bag');
 
       // No category, provider without label.
-      $definition = array(
+      $definition = [
         'label' => 'some',
         'provider' => 'core',
-      );
+      ];
       $this->pluginManager->processDefinition($definition, 'some');
       $this->assertSame($definition['category'], 'core');
 
       // No category, provider is module with label.
-      $definition = array(
+      $definition = [
         'label' => 'some',
         'provider' => 'node',
-      );
+      ];
       $this->pluginManager->processDefinition($definition, 'some');
       $this->assertSame($definition['category'], 'Node');
     }
@@ -106,24 +106,24 @@ public function __construct() {
     }
 
     /**
-     * Implements getDefinitions() for the trait to provide some test definitions.
+     * {@inheritdoc}
      *
-     * @return array
+     * Provides some test definitions to the trait.
      */
     public function getDefinitions() {
       return [
-        'cucumber' => array(
+        'cucumber' => [
           'label' => 'cucumber',
           'category' => 'vegetables',
-        ),
-        'apple' => array(
+        ],
+        'apple' => [
           'label' => 'apple',
           'category' => 'fruits',
-        ),
-        'mango' => array(
+        ],
+        'mango' => [
           'label' => 'mango',
           'category' => 'fruits',
-        ),
+        ],
       ];
     }
 
@@ -145,7 +145,7 @@ public function processDefinition(&$definition, $plugin_id) {
   if (!function_exists('system_get_info')) {
 
     function system_get_info($type, $name = NULL) {
-      return array('node' => array('name' => 'Node'));
+      return ['node' => ['name' => 'Node']];
     }
   }
 }