public function testHeaderBag()
{
$headerBag = new HeaderBag($this->_headers);
$this->assertEquals($headerBag->getHost(), ['localhost']);
$this->assertEquals($headerBag->getAccept(), explode(',', 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'));
}
