/**
* @covers Guzzle\Http\Message\Response::getFreshness
* @covers Guzzle\Http\Message\Response::isFresh
*/
public function testCalculatesFreshness()
{
$response = new Response(200);
$this->assertNull($response->isFresh());
$this->assertNull($response->getFreshness());
$response->addCacheControlDirective('max-age', 120);
$response->setHeader('Age', 100);
$this->assertEquals(20, $response->getFreshness());
$this->assertTrue($response->isFresh());
$response->setHeader('Age', 150);
$this->assertEquals(-30, $response->getFreshness());
$this->assertFalse($response->isFresh());
}
