DiDom\Element::hasAttribute PHP Method

    public function hasAttribute($name)
    {
        return $this->node->hasAttribute($name);
    }

 public function testUnsetMagicMethod()
 {
     $element = new Element('input', null, ['name' => 'username']);
     $this->assertTrue($element->hasAttribute('name'));
     unset($element->name);
     $this->assertFalse($element->hasAttribute('name'));
 }