diff --git a/application/tests/Unit/Entity/Attribut/ChildsAttributTest.php b/application/tests/Unit/Entity/Attribut/ChildsAttributTest.php
new file mode 100644
index 0000000..6777300
--- /dev/null
+++ b/application/tests/Unit/Entity/Attribut/ChildsAttributTest.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace Entity\Attribut;
+
+use PHPUnit\Framework\TestCase;
+use App\Entity\Attribut\ChildsAttributeInterface;
+use App\Entity\Attribut\ChildsAttribut;
+use Doctrine\Common\Collections\ArrayCollection;
+
+class ChildsAttributTest extends TestCase
+{
+    /**
+     * @var ChildsAttributeInterface
+     */
+    protected $childs;
+
+    public function setUp(): void
+    {
+        $this->childs = new class() implements ChildsAttributeInterface {
+            use ChildsAttribut;
+        };
+    }
+
+    public function testConstructor(): void
+    {
+        $this->expectException(\TypeError::class);
+        $this->childs->getChilds();
+    }
+
+    public function testAccessors(): void
+    {
+        $childs = new ArrayCollection();
+        $this->assertNull($this->childs->setChilds($childs));
+        $this->assertEquals($childs, $this->childs->getChilds());
+    }
+}
diff --git a/application/tests/Unit/Entity/Meta/RelationTest.php b/application/tests/Unit/Entity/Meta/RelationTest.php
index f8d6508..cf52f84 100644
--- a/application/tests/Unit/Entity/Meta/RelationTest.php
+++ b/application/tests/Unit/Entity/Meta/RelationTest.php
@@ -1,4 +1,5 @@
 <?php
+
 namespace tests\Unit\Entity\Meta;
 
 use PHPUnit\Framework\TestCase;
@@ -9,20 +10,20 @@ use Doctrine\Common\Collections\Collection;
 class RelationTest extends TestCase
 {
     /**
-     * 
      * @var RelationInterface
      */
     protected $relation;
-    
-    public function setUp():void{
+
+    public function setUp(): void
+    {
         $this->relation = new Relation();
     }
-    
-    public function testConstructor():void {
+
+    public function testConstructor(): void
+    {
         $this->assertInstanceOf(Collection::class, $this->relation->getChilds());
         $this->assertInstanceOf(Collection::class, $this->relation->getParents());
         $this->expectException(\TypeError::class);
         $this->relation->getSource();
     }
 }
-