AsseticBundle\FilterManager::has PHP Method

    public function has($alias)
    {
        return parent::has($alias) ? true : $this->serviceLocator->has($alias);
    }

 /**
  * @dataProvider getAliasHasFalseProvider
  */
 public function testHasFalse($alias)
 {
     $this->assertFalse($this->object->has($alias));
 }