diff --git a/plugins/bc-installer/src/Controller/Admin/InstallationsController.php b/plugins/bc-installer/src/Controller/Admin/InstallationsController.php
index fdc348bebd..59c5c9402f 100644
--- a/plugins/bc-installer/src/Controller/Admin/InstallationsController.php
+++ b/plugins/bc-installer/src/Controller/Admin/InstallationsController.php
@@ -49,6 +49,7 @@ class InstallationsController extends BcAdminAppController
      * @return void
      * @checked
      * @noTodo
+     * @unitTest
      */
     public function beforeFilter(EventInterface $event)
     {
diff --git a/plugins/bc-installer/tests/TestCase/Controller/Admin/InstallationsControllerTest.php b/plugins/bc-installer/tests/TestCase/Controller/Admin/InstallationsControllerTest.php
index ca642492d2..15c6f3af42 100644
--- a/plugins/bc-installer/tests/TestCase/Controller/Admin/InstallationsControllerTest.php
+++ b/plugins/bc-installer/tests/TestCase/Controller/Admin/InstallationsControllerTest.php
@@ -12,6 +12,7 @@
 namespace BcInstaller\Test\TestCase\Controller\Admin;
 use BaserCore\TestSuite\BcTestCase;
 use BcInstaller\Controller\Admin\InstallationsController;
+use Cake\Event\Event;
 
 /**
  * Class InstallationsControllerTest
@@ -45,7 +46,10 @@ public function tearDown(): void
      */
     public function testBeforeFilter()
     {
-        $this->markTestIncomplete('このテストは、まだ実装されていません。');
+        $this->InstallationsController = new InstallationsController($this->getRequest());
+        $event = new Event('Controller.beforeFilter', $this->InstallationsController);
+        $this->InstallationsController->beforeFilter($event);
+        $this->assertEquals(300, ini_get("max_execution_time"));
     }
 
     /**