diff -u b/core/modules/system/src/Tests/Batch/PageTest.php b/core/modules/system/src/Tests/Batch/PageTest.php
--- b/core/modules/system/src/Tests/Batch/PageTest.php
+++ b/core/modules/system/src/Tests/Batch/PageTest.php
@@ -3,6 +3,7 @@
 namespace Drupal\system\Tests\Batch;
 
 use Drupal\simpletest\WebTestBase;
+use Drupal\Core\Logger\RfcLogLevel;
 use Drupal\Core\Queue\DatabaseQueue;
 use Drupal\Core\Queue\BatchQueueInterface;
 
@@ -77,8 +78,34 @@
    * Tests that batch queue was wrongly implemented.
    */
   public function testWrongQueueImplementation() {
-    $this->drupalGet('batch-test/test-wrong-queue');
-    $this->assertErrorLogged('Batch queue "' . DatabaseQueue::class . '" is not implements "' . BatchQueueInterface::class . '" interface.');
+    $message = sprintf('Batch queue "%s" is not implements "%s" interface.', DatabaseQueue::class, BatchQueueInterface::class);
+    $logger = \Drupal::service('logger.broken');
+    $found = FALSE;
+
+    batch_set([
+      'operations' => [
+        ['dummy', []],
+      ],
+      'queue' => [
+        'name' => 'test_wrong_batch_queue',
+        'class' => DatabaseQueue::class,
+      ],
+    ]);
+
+    batch_process();
+
+    foreach ($logger::$entries as $i => $entry) {
+      // Use non-strict comparison since "TranslatableMarkup" could
+      // be the value in "$entry['message']".
+      if ($entry['level'] === RfcLogLevel::EMERGENCY && $entry['message'] == $message) {
+        $found = TRUE;
+
+        unset($logger::$entries[$i]);
+        break;
+      }
+    }
+
+    $this->assertTrue($found, sprintf('Log entry "%s" about wrong queue implementation was found.', $message));
   }
 
 }
reverted:
--- b/core/modules/system/tests/modules/batch_test/batch_test.routing.yml
+++ a/core/modules/system/tests/modules/batch_test/batch_test.routing.yml
@@ -85,10 +85,3 @@
     _controller: '\Drupal\batch_test\Controller\BatchTestController::testTitleBatch'
   requirements:
     _access: 'TRUE'
-
-batch_test.test_wrong_queue:
-  path: '/batch-test/test-wrong-queue'
-  defaults:
-    _controller: '\Drupal\batch_test\Controller\BatchTestController::testWrongQueueImplementation'
-  requirements:
-    _access: 'TRUE'
reverted:
--- b/core/modules/system/tests/modules/batch_test/src/Controller/BatchTestController.php
+++ a/core/modules/system/tests/modules/batch_test/src/Controller/BatchTestController.php
@@ -3,7 +3,6 @@
 namespace Drupal\batch_test\Controller;
 
 use Drupal\Core\Form\FormState;
-use Drupal\Core\Queue\DatabaseQueue;
 
 /**
  * Controller routines for batch tests.
@@ -143,23 +142,4 @@
     return batch_process('batch-test/redirect');
   }
 
-  /**
-   * Runs a batch for testing the wrong queue implementation.
-   *
-   * @return \Symfony\Component\HttpFoundation\RedirectResponse|null
-   *   A redirect response if the batch is progressive. No return value otherwise.
-   */
-  public function testWrongQueueImplementation() {
-    batch_test_stack(NULL, TRUE);
-    $batch = [
-      'operations' => [],
-      'queue' => [
-        'name' => 'test_wrong_batch_queue',
-        'class' => DatabaseQueue::class,
-      ],
-    ];
-    batch_set($batch);
-    return batch_process('batch-test/redirect');
-  }
-
 }
only in patch2:
unchanged:
--- a/core/modules/system/tests/modules/error_service_test/src/Logger/TestLog.php
+++ b/core/modules/system/tests/modules/error_service_test/src/Logger/TestLog.php
@@ -11,12 +11,20 @@
  * @see \Drupal\system\Tests\System\UncaughtExceptionTest::testLoggerException()
  */
 class TestLog implements LoggerInterface {
+
   use RfcLoggerTrait;
 
   /**
+   * An array of arrays with three items: "level", "context" and "message".
+   *
+   * @var array[]
+   */
+  public static $entries = [];
+
+  /**
    * {@inheritdoc}
    */
-  public function log($level, $message, array $context = array()) {
+  public function log($level, $message, array $context = []) {
     $trigger = [
       '%type' => 'Exception',
       '@message' => 'Deforestation',
@@ -24,6 +32,13 @@ public function log($level, $message, array $context = array()) {
       'severity_level' => 3,
       'channel' => 'php',
     ];
+
+    static::$entries[] = [
+      'level' => $level,
+      'message' => $message,
+      'context' => $context,
+    ];
+
     if (array_diff_assoc($trigger, $context) === []) {
       throw new \Exception('Oh, oh, frustrated monkeys!');
     }