Issue #3239292 by alexpott: Missing configuration in KernelTests causes deprecations in PHP 8.1

core/modules/aggregator/tests/src/Kernel/Views/AggregatorItemViewsFieldAccessTest.php

@@ -24,6 +24,7 @@ class AggregatorItemViewsFieldAccessTest extends FieldFieldAccessTestBase {
   protected function setUp($import_test_views = TRUE): void {
     parent::setUp($import_test_views);
 
+    $this->installConfig(['aggregator']);
     $this->installEntitySchema('aggregator_feed');
     $this->installEntitySchema('aggregator_item');
   }

core/modules/aggregator/tests/src/Kernel/Views/IntegrationTest.php

@@ -58,6 +58,7 @@ class IntegrationTest extends ViewsKernelTestBase {
   protected function setUp($import_test_views = TRUE): void {
     parent::setUp();
 
+    $this->installConfig(['aggregator']);
     $this->installEntitySchema('aggregator_item');
     $this->installEntitySchema('aggregator_feed');
 

core/modules/block/tests/src/Kernel/NewDefaultThemeBlocksTest.php

@@ -26,6 +26,7 @@ class NewDefaultThemeBlocksTest extends KernelTestBase {
    * Check the enabled Bartik blocks are correctly copied over.
    */
   public function testNewDefaultThemeBlocks() {
+    $this->installConfig(['system']);
     /** @var \Drupal\Core\Extension\ThemeInstallerInterface $theme_installer */
     $theme_installer = $this->container->get('theme_installer');
     $default_theme = $this->config('system.theme')->get('default');

core/modules/comment/tests/src/Kernel/CommentOrphanTest.php

@@ -19,13 +19,14 @@ class CommentOrphanTest extends EntityKernelTestBase {
   /**
    * {@inheritdoc}
    */
-  protected static $modules = ['comment', 'node'];
+  protected static $modules = ['comment', 'node', 'user'];
 
   /**
    * {@inheritdoc}
    */
   protected function setUp(): void {
     parent::setUp();
+    $this->installConfig(['user']);
     $this->installEntitySchema('date_format');
     $this->installEntitySchema('comment');
     $this->installSchema('comment', ['comment_entity_statistics']);

core/modules/user/tests/src/Kernel/UserMailNotifyTest.php

@@ -81,6 +81,7 @@ public function userMailsProvider() {
    * @dataProvider userMailsProvider
    */
   public function testUserMailsSent($op, array $mail_keys) {
+    $this->installConfig('user');
     $this->config('user.settings')->set('notify.' . $op, TRUE)->save();
     $return = _user_mail_notify($op, $this->createUser());
     $this->assertTrue($return);

core/tests/Drupal/KernelTests/Core/Image/ToolkitGdTest.php

@@ -60,6 +60,7 @@ class ToolkitGdTest extends KernelTestBase {
   protected function setUp(): void {
     parent::setUp();
 
+    $this->installConfig(['system']);
     // Set the image factory service.
     $this->imageFactory = $this->container->get('image.factory');
   }

core/tests/Drupal/KernelTests/Core/Plugin/Condition/RequestPathTest.php

@@ -58,6 +58,7 @@ protected function setUp(): void {
     parent::setUp();
 
     $this->installSchema('system', ['sequences']);
+    $this->installConfig('system');
 
     $this->pluginManager = $this->container->get('plugin.manager.condition');