Ouzo\Utilities\Arrays::keyExists PHP Метод

    public static function keyExists(array $elements, $key)
    {
        return array_key_exists($key, $elements);
    }

 /**
  * @test
  */
 public function shouldCheckIsKeyExists()
 {
     //given
     $array = array('id' => 1, 'name' => 'john');
     //when
     $return = Arrays::keyExists($array, 'name');
     //then
     $this->assertTrue($return);
 }