public function testGetVary()
{
$response = new Response();
$this->assertEquals(array(), $response->getVary(), '->getVary() returns an empty array if no Vary header is present');
$response = new Response();
$response->headers->set('Vary', 'Accept-Language');
$this->assertEquals(array('Accept-Language'), $response->getVary(), '->getVary() parses a single header name value');
$response = new Response();
$response->headers->set('Vary', 'Accept-Language User-Agent X-Foo');
$this->assertEquals(array('Accept-Language', 'User-Agent', 'X-Foo'), $response->getVary(), '->getVary() parses multiple header name values separated by spaces');
$response = new Response();
$response->headers->set('Vary', 'Accept-Language,User-Agent, X-Foo');
$this->assertEquals(array('Accept-Language', 'User-Agent', 'X-Foo'), $response->getVary(), '->getVary() parses multiple header name values separated by commas');
}
