diff --git a/core/modules/views_ui/src/Form/Ajax/RearrangeFilter.php b/core/modules/views_ui/src/Form/Ajax/RearrangeFilter.php
index a17d361..7711c99 100644
--- a/core/modules/views_ui/src/Form/Ajax/RearrangeFilter.php
+++ b/core/modules/views_ui/src/Form/Ajax/RearrangeFilter.php
@@ -135,9 +135,9 @@ public function buildForm(array $form, FormStateInterface $form_state) {
             'class' => array('views-remove-group'),
           ),
           '#group' => $id,
-          '#ajax' => array(
+          '#ajax' => [
             'path' => $this->getRequest()->getRequestUri(),
-          )
+          ]
         );
       }
       $group_options[$id] = $id == 1 ? $this->t('Default group') : $this->t('Group @group', array('@group' => $id));
@@ -219,9 +219,9 @@ public function buildForm(array $form, FormStateInterface $form_state) {
       '#value' => $this->t('Create new filter group'),
       '#id' => 'views-add-group',
       '#group' => 'add',
-      '#ajax' => array(
+      '#ajax' => [
         'path' => $this->getRequest()->getRequestUri(),
-      ),
+      ]
     );
 
     return $form;
diff --git a/core/modules/views_ui/src/Tests/FilterUITest.php b/core/modules/views_ui/src/Tests/FilterUITest.php
index 5fc43e6..f90900d 100644
--- a/core/modules/views_ui/src/Tests/FilterUITest.php
+++ b/core/modules/views_ui/src/Tests/FilterUITest.php
@@ -16,30 +16,32 @@
  */
 class FilterUITest extends ViewTestBase {
 
-
   /**
    * Views used by this test.
    *
    * @var array
    */
-  public static $testViews = array('test_filter_in_operator_ui', 'test_filter_groups');
+  public static $testViews = ['test_filter_in_operator_ui', 'test_filter_groups'];
 
   /**
    * Modules to enable.
    *
    * @var array
    */
-  public static $modules = array('views_ui', 'node');
+  public static $modules = ['views_ui', 'node'];
 
+  /**
+   * {@inheritdoc}
+   */
   protected function setUp() {
     parent::setUp();
-    $this->drupalCreateContentType(array('type' => 'page'));
+    $this->drupalCreateContentType(['type' => 'page']);
     $this->enableViewsTestModule();
   }
 
   /**
-   * Tests that "Limit list to selected items" option is saved as expected when editing
-   * the Content type filter from the UI.
+   * Tests that "Limit list to selected items" option is saved as expected when
+   * editing the Content type filter from the UI.
    */
   public function testFilterInOperatorUi() {
     $admin_user = $this->drupalCreateUser(array('administer views', 'administer site configuration'));
@@ -49,9 +51,9 @@ public function testFilterInOperatorUi() {
     $this->drupalGet($path);
     $this->assertFieldByName('options[expose][reduce]', FALSE);
 
-    $edit = array(
-      'options[expose][reduce]' => TRUE,
-    );
+    $edit = [
+      'options[expose][reduce]' => TRUE
+    ];
     $this->drupalPostForm($path, $edit, t('Apply'));
     $this->drupalGet($path);
     $this->assertFieldByName('options[expose][reduce]', TRUE);
@@ -61,7 +63,7 @@ public function testFilterInOperatorUi() {
    * Tests the filters from the UI.
    */
   public function testFiltersUI() {
-    $admin_user = $this->drupalCreateUser(array('administer views', 'administer site configuration'));
+    $admin_user = $this->drupalCreateUser(['administer views', 'administer site configuration']);
     $this->drupalLogin($admin_user);
 
     // Tests that we can create a new filter group from UI.
@@ -69,21 +71,20 @@ public function testFiltersUI() {
     $this->assertNoRaw('<span>Group 3</span>', 'Group 3 has not been added yet.');
 
     // Create 2 new groups.
-    $this->drupalPostForm(NULL, array(), t('Create new filter group'));
-    $this->drupalPostForm(NULL, array(), t('Create new filter group'));
+    $this->drupalPostForm(NULL, [], t('Create new filter group'));
+    $this->drupalPostForm(NULL, [], t('Create new filter group'));
 
     // Remove the new group 3.
-    $this->drupalPostForm(NULL, array(), t('Remove group 3'));
+    $this->drupalPostForm(NULL, [], t('Remove group 3'));
 
     // Verify that the group 4 is now named as 3.
     $this->assertRaw('<span>Group 3</span>', 'Group 3 still exists.');
 
     // Remove the group 3 again.
-    $this->drupalPostForm(NULL, array(), t('Remove group 3'));
+    $this->drupalPostForm(NULL, [], t('Remove group 3'));
 
     // Group 3 now does not exist.
     $this->assertNoRaw('<span>Group 3</span>', 'Group 3 has not been added yet.');
-
   }
 
 }