diff --git a/backend/tests/Unit/Auth/UseCases/LogoutTest.php b/backend/tests/Unit/Auth/UseCases/LogoutTest.php
index 7f83b75..ffd4763 100644
--- a/backend/tests/Unit/Auth/UseCases/LogoutTest.php
+++ b/backend/tests/Unit/Auth/UseCases/LogoutTest.php
@@ -50,4 +50,18 @@ class LogoutTest extends TestCase
 
         $this->assertTrue(true);
     }
+
+    public function testDoesNotThrowForNullToken(): void
+    {
+        $this->useCase->execute(null);
+
+        $this->assertTrue(true);
+    }
+
+    public function testDoesNotThrowForEmptyStringToken(): void
+    {
+        $this->useCase->execute('');
+
+        $this->assertTrue(true);
+    }
 }