Inheritance: extends NodeValidator
 public function testAll()
 {
     $this->if($schema_validator = new SchemaValidator())->and($object = new testedClass($schema_validator))->and($config = array('_metadata' => array(), '_partial' => 'nom_partial'))->then->object($object)->isInstanceOf('RomaricDrigon\\MetaYaml\\NodeValidator\\PartialNodeValidator')->exception(function () use($object, $config) {
         $object->validate('test', $config, array());
     })->hasMessage("You're using a partial but partial 'nom_partial' is not defined in your schema");
 }