diff --git a/Tests/Composite/FormTest.php b/Tests/Composite/FormTest.php
index 71a275c..a706c99 100644
--- a/Tests/Composite/FormTest.php
+++ b/Tests/Composite/FormTest.php
@@ -27,9 +27,13 @@ class FormTest extends \PHPUnit_Framework_TestCase
         $this->assertRegExp('#^\s{4}#m', $form->render());
     }
 
+    /**
+     * The all point of this pattern, a Composite must inherit from the node
+     * if you wanto to builld trees
+     */
     public function testFormImplementsFormEelement()
     {
-        $this->markTestIncomplete();
+        $this->assertTrue(is_subclass_of('DesignPatterns\Composite\Form', 'DesignPatterns\Composite\FormElement'));
     }
 
 }
\ No newline at end of file
diff --git a/Tests/Decorator/DecoratorTest.php b/Tests/Decorator/DecoratorTest.php
index 4eee22b..35e19a7 100644
--- a/Tests/Decorator/DecoratorTest.php
+++ b/Tests/Decorator/DecoratorTest.php
@@ -37,9 +37,27 @@ class DecoratorTest extends \PHPUnit_Framework_TestCase
         $this->assertXmlStringEqualsXmlString('<?xml version="1.0"?><foo>bar</foo>', $service->renderData());
     }
 
-    public function testDecoratorImplementsRenderer()
+    /**
+     * The first key-point of this pattern :
+     */
+    public function testDecoratorMustImplementsRenderer()
     {
-        $this->markTestIncomplete();
+        $this->assertTrue(is_subclass_of('DesignPatterns\Decorator\Decorator', 'DesignPatterns\Decorator\Renderer'));
+    }
+
+    /**
+     * @expectedException \PHPUnit_Framework_Error
+     */
+    public function testDecoratorTypeHinted()
+    {
+        $this->getMockForAbstractClass('DesignPatterns\Decorator\Decorator', array(new \stdClass()));
+    }
+
+    public function testDecoratorOnlyAcceptRenderer()
+    {
+        $mock = $this->getMock('DesignPatterns\Decorator\Renderer');
+        $dec = $this->getMockForAbstractClass('DesignPatterns\Decorator\Decorator', array($mock));
+        $this->assertNotNull($dec);
     }
 
 }
\ No newline at end of file