diff --git a/application/tests/Unit/Entity/Attribut/CollectionAttributTest.php b/application/tests/Unit/Entity/Attribut/CollectionAttributTest.php
index fc2eb78..52f39b3 100644
--- a/application/tests/Unit/Entity/Attribut/CollectionAttributTest.php
+++ b/application/tests/Unit/Entity/Attribut/CollectionAttributTest.php
@@ -33,4 +33,11 @@ class CollectionAttributTest extends TestCase
         $this->assertNull($this->collection->setCollection($collection));
         $this->assertEquals($collection, $this->collection->getCollection());
     }
+    
+    public function testAdd():void{
+        $mock = new class{};
+        $this->collection->setCollection(new ArrayCollection());
+        $this->assertTrue($this->collection->getCollection()->add($mock));
+        $this->assertEquals($mock, $this->collection->getCollection()->get(0));
+    }
 }