diff --git a/core/tests/Drupal/Tests/Core/Config/Entity/ConfigEntityTypeTest.php b/core/tests/Drupal/Tests/Core/Config/Entity/ConfigEntityTypeTest.php
index 914d4f6..8cea258 100644
--- a/core/tests/Drupal/Tests/Core/Config/Entity/ConfigEntityTypeTest.php
+++ b/core/tests/Drupal/Tests/Core/Config/Entity/ConfigEntityTypeTest.php
@@ -145,7 +145,7 @@ public function providerGetPropertiesToExport() {
     $data[] = [
       [
         'config_export' => [
-          'id',
+          0 => 'id',
           'custom_property' => 'customProperty',
         ],
       ],
diff --git a/core/tests/Drupal/Tests/Core/Render/RendererTest.php b/core/tests/Drupal/Tests/Core/Render/RendererTest.php
index 71a8628..ec95e70 100644
--- a/core/tests/Drupal/Tests/Core/Render/RendererTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/RendererTest.php
@@ -126,7 +126,7 @@ public function providerTestRenderBasic() {
       ],
       "This is <script>alert('XSS')</script> test",
     ];
-      // XSS filtering test.
+    // XSS filtering test.
     $data[] = [
       [
         'child' => [
@@ -180,9 +180,9 @@ public function providerTestRenderBasic() {
       [
         '#markup' => 'foo',
         '#pre_render' => [function($elements) {
-            $elements['#markup'] .= '<script>alert("bar");</script>';
-            return $elements;
-          }
+          $elements['#markup'] .= '<script>alert("bar");</script>';
+          return $elements;
+        }
         ],
       ],
       'fooalert("bar");',
@@ -193,9 +193,9 @@ public function providerTestRenderBasic() {
         '#markup' => 'foo',
         '#allowed_tags' => ['script'],
         '#pre_render' => [function($elements) {
-            $elements['#markup'] .= '<script>alert("bar");</script>';
-            return $elements;
-          }
+          $elements['#markup'] .= '<script>alert("bar");</script>';
+          return $elements;
+        }
         ],
       ],
       'foo<script>alert("bar");</script>',
@@ -206,9 +206,9 @@ public function providerTestRenderBasic() {
       [
         '#plain_text' => 'foo',
         '#pre_render' => [function($elements) {
-            $elements['#plain_text'] .= '<script>alert("bar");</script>';
-            return $elements;
-          }
+          $elements['#plain_text'] .= '<script>alert("bar");</script>';
+          return $elements;
+        }
         ],
       ],
       'foo&lt;script&gt;alert(&quot;bar&quot;);&lt;/script&gt;',
@@ -284,7 +284,7 @@ public function providerTestRenderBasic() {
         'container' => [
           '#attributes' => ['class' => ['bar']],
         ],
-        'container',
+        0 => 'container',
       ],
     ];
     $setup_code = function() {