Issue #3245996: Move basic exclusions and test coverage into Package Manager

src/Event/ExcludedPathsSubscriber.php

@@ -2,12 +2,13 @@
 
 namespace Drupal\automatic_updates\Event;
 
+use Drupal\automatic_updates\Updater;
 use Drupal\Core\Extension\ModuleExtensionList;
 use Drupal\package_manager\Event\PreCreateEvent;
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 
 /**
- * Defines an event subscriber to exclude certain paths from staging areas.
+ * Defines an event subscriber to exclude certain paths from update operations.
  */
 class ExcludedPathsSubscriber implements EventSubscriberInterface {
 
@@ -29,14 +30,15 @@ class ExcludedPathsSubscriber implements EventSubscriberInterface {
   }
 
   /**
-   * Excludes paths from a staging area before it is created.
+   * Reacts to the beginning of an update process.
    *
    * @param \Drupal\package_manager\Event\PreCreateEvent $event
    *   The event object.
    */
   public function preCreate(PreCreateEvent $event): void {
-    // If this module is a git clone, exclude it.
-    if (is_dir(__DIR__ . '/../../.git')) {
+    // If we are doing an automatic update and this module is a git clone,
+    // exclude it.
+    if ($event->getStage() instanceof Updater && is_dir(__DIR__ . '/../../.git')) {
       $dir = $this->moduleList->getPath('automatic_updates');
       $event->excludePath($dir);
     }