diff --git a/tests/TestCase/Form/FormTest.php b/tests/TestCase/Form/FormTest.php
index 58b0b1fc3a4..5c49b4f83cf 100644
--- a/tests/TestCase/Form/FormTest.php
+++ b/tests/TestCase/Form/FormTest.php
@@ -62,6 +62,20 @@ public function testValidator()
         });
     }
 
+    /**
+     * Test setValidator()
+     *
+     * @return void
+     */
+    public function testSetValidator()
+    {
+        $form = new Form();
+
+        $validator = $this->getMockBuilder('Cake\Validation\Validator')->getMock();
+        $form->setValidator($validator);
+        $this->assertSame($validator, $form->getValidator());
+    }
+
     /**
      * Test validate method.
      *