diff --git a/core/modules/quickedit/tests/src/Kernel/MetadataGeneratorTest.php b/core/modules/quickedit/tests/src/Kernel/MetadataGeneratorTest.php
index d7348cd..4425df2 100644
--- a/core/modules/quickedit/tests/src/Kernel/MetadataGeneratorTest.php
+++ b/core/modules/quickedit/tests/src/Kernel/MetadataGeneratorTest.php
@@ -12,7 +12,6 @@
 use Drupal\quickedit\MetadataGenerator;
 use Drupal\quickedit_test\MockEditEntityFieldAccessCheck;
 use Drupal\filter\Entity\FilterFormat;
-use Drupal\Tests\quickedit\Kernel\QuickEditTestBase;
 
 /**
  * Tests in-place field editing metadata.
diff --git a/core/modules/system/tests/src/Kernel/Token/TokenReplaceUnitTest.php b/core/modules/system/tests/src/Kernel/Token/TokenReplaceKernelTest.php
similarity index 100%
rename from core/modules/system/tests/src/Kernel/Token/TokenReplaceUnitTest.php
rename to core/modules/system/tests/src/Kernel/Token/TokenReplaceKernelTest.php
diff --git a/core/tests/Drupal/KernelTests/KernelTestBase.php b/core/tests/Drupal/KernelTests/KernelTestBase.php
index 9587ed2..fd31d36 100644
--- a/core/tests/Drupal/KernelTests/KernelTestBase.php
+++ b/core/tests/Drupal/KernelTests/KernelTestBase.php
@@ -21,6 +21,7 @@
 use Drupal\Core\DrupalKernel;
 use Drupal\Core\Entity\Sql\SqlEntityStorageInterface;
 use Drupal\Core\Extension\ExtensionDiscovery;
+use Drupal\Core\Language\Language;
 use Drupal\Core\Site\Settings;
 use Drupal\simpletest\AssertContentTrait;
 use Drupal\simpletest\AssertHelperTrait;
@@ -609,6 +610,9 @@ public function register(ContainerBuilder $container) {
     $container
       ->setAlias('keyvalue', 'keyvalue.memory');
 
+    // Set the default language on the minimal container.
+    $container->setParameter('language.default_values', $this->defaultLanguageData());
+
     if ($this->strictConfigSchema) {
       $container
         ->register('simpletest.config_schema_checker', 'Drupal\Core\Config\Testing\ConfigSchemaChecker')
@@ -635,6 +639,16 @@ public function register(ContainerBuilder $container) {
   }
 
   /**
+   * Provides the data for setting the default language on the container.
+   *
+   * @return array
+   *   The data array for the default language.
+   */
+  protected function defaultLanguageData() {
+    return Language::$defaultValues;
+  }
+
+  /**
    * Gets the config schema exclusions for this test.
    *
    * @return string[]