diff --git a/core/modules/user/src/Tests/UserTemplateSuggestionsTest.php b/core/modules/user/src/Tests/UserTemplateSuggestionsTest.php
index 40ff0ac..e23e401 100644
--- a/core/modules/user/src/Tests/UserTemplateSuggestionsTest.php
+++ b/core/modules/user/src/Tests/UserTemplateSuggestionsTest.php
@@ -14,7 +14,7 @@ class UserTemplateSuggestionsTest extends WebTestBase {
   /**
    * Tests if user_theme_suggestions_user() generates the correct suggestions.
    */
-  function testUserThemeHookSuggestions() {
+  public function testUserThemeHookSuggestions() {
     // Create user to be rendered.
     $user = $this->drupalCreateUser();
 
@@ -23,8 +23,8 @@ function testUserThemeHookSuggestions() {
     $build = \Drupal::entityTypeManager()->getViewBuilder('user')->view($user, $view_mode);
 
     $variables['elements'] = $build;
-    $suggestions = \Drupal::moduleHandler()->invokeAll('theme_suggestions_user', array($variables));
-    $this->assertEqual($suggestions, array('user__user_my_custom_view_mode'), 'Found expected user template suggestions.');
+    $suggestions = \Drupal::moduleHandler()->invokeAll('theme_suggestions_user', [$variables]);
+    $this->assertEqual($suggestions, ['user__user_my_custom_view_mode'], 'Found expected user template suggestions.');
   }
 
 }
diff --git a/core/modules/user/user.module b/core/modules/user/user.module
index 16a4e5c..dbdfd14 100644
--- a/core/modules/user/user.module
+++ b/core/modules/user/user.module
@@ -1429,7 +1429,7 @@ function template_preprocess_user(&$variables) {
  * Implements hook_theme_suggestions_HOOK().
  */
 function user_theme_suggestions_user(array $variables) {
-  $suggestions = array();
+  $suggestions = [];
   $sanitized_view_mode = strtr($variables['elements']['#view_mode'], '.', '_');
   $suggestions[] = 'user__' . $sanitized_view_mode;
   return $suggestions;