public function testCacheControlDirectiveOverrideWithReplace()
{
$bag = new HeaderBag(array('cache-control' => 'private, max-age=100'));
$bag->replace(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'));
}