Issue #3404769 by acbramley, smustgrave: UpdatePathTestBase::prepareSettings...

Issue #3404769 by acbramley, smustgrave: UpdatePathTestBase::prepareSettings writes entity_update_batch_size incorrectly

(cherry picked from commit b173b839)

core/tests/Drupal/FunctionalTests/Update/UpdatePathTestBase.php

@@ -182,7 +182,7 @@ protected function prepareSettings() {
     ];
 
     // Force every update hook to only run one entity per batch.
-    $settings['entity_update_batch_size'] = (object) [
+    $settings['settings']['entity_update_batch_size'] = (object) [
       'value' => 1,
       'required' => TRUE,
     ];

core/tests/Drupal/FunctionalTests/Update/UpdatePathTestBaseTest.php

@@ -5,6 +5,7 @@
 use Drupal\Component\Utility\Html;
 use Drupal\Component\Render\FormattableMarkup;
 use Drupal\Core\Database\Database;
+use Drupal\Core\Site\Settings;
 
 /**
  * Tests the update path base class.
@@ -229,4 +230,11 @@ public function testFixturesSetup() {
     $this->assertCount(3, $this->databaseDumpFiles);
   }
 
+  /**
+   * Tests that settings are prepared correctly.
+   */
+  public function testPrepareSettings(): void {
+    $this->assertSame(1, Settings::get('entity_update_batch_size'));
+  }
+
 }