added activity events for plugins (#2516)

tests/Event/ActivityUpdatePreEventTest.php

@@ -0,0 +1,26 @@
+<?php
+
+/*
+ * This file is part of the Kimai time-tracking app.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace App\Tests\Event;
+
+use App\Entity\Activity;
+use App\Event\AbstractActivityEvent;
+use App\Event\ActivityUpdatePreEvent;
+
+/**
+ * @covers \App\Event\AbstractActivityEvent
+ * @covers \App\Event\ActivityUpdatePreEvent
+ */
+class ActivityUpdatePreEventTest extends AbstractActivityEventTest
+{
+    protected function createActivityEvent(Activity $activity): AbstractActivityEvent
+    {
+        return new ActivityUpdatePreEvent($activity);
+    }
+}