public function testGetHeaders()
{
$response = new Response('foo');
$response->addHeader('bar');
$response->addHeader('baz');
$this->assertEquals(['bar', 'baz'], $response->getHeaders());
}
/**
* @param File $file
*/
public function __construct(File $file)
{
parent::__construct($file->getContent());
$this->addHeader(sprintf('Content-Type: %s', $file->getType()));
$this->addHeader(sprintf('Content-Length: %d', $file->getSize()));
$this->addHeader(sprintf('Content-Disposition: attachment; filename="%s"', $file->getName()));
}