public function testCacheControlDirectiveParsing() {
$bag = new HeaderBag(array(
'cache-control' => 'public, max-age=10',
));
$this
->assertTrue($bag
->hasCacheControlDirective('public'));
$this
->assertTrue($bag
->getCacheControlDirective('public'));
$this
->assertTrue($bag
->hasCacheControlDirective('max-age'));
$this
->assertEquals(10, $bag
->getCacheControlDirective('max-age'));
$bag
->addCacheControlDirective('s-maxage', 100);
$this
->assertEquals('max-age=10, public, s-maxage=100', $bag
->get('cache-control'));
}