added event to extend detail pages (#3209)

tests/Event/CustomerDetailControllerEventTest.php

@@ -0,0 +1,34 @@
+<?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\Customer;
+use App\Event\AbstractCustomerEvent;
+use App\Event\CustomerDetailControllerEvent;
+
+/**
+ * @covers \App\Event\AbstractCustomerEvent
+ * @covers \App\Event\CustomerDetailControllerEvent
+ */
+class CustomerDetailControllerEventTest extends AbstractCustomerEventTest
+{
+    protected function createCustomerEvent(Customer $customer): AbstractCustomerEvent
+    {
+        return new CustomerDetailControllerEvent($customer);
+    }
+
+    public function testController(): void
+    {
+        /** @var CustomerDetailControllerEvent $event */
+        $event = $this->createCustomerEvent(new Customer());
+        $event->addController('Foo\\Bar::helloWorld');
+        $this->assertEquals(['Foo\\Bar::helloWorld'], $event->getController());
+    }
+}