public function testRenderForStream()
{
if (php_sapi_name() == 'phpdbg') {
$this->markTestSkipped('Can not support of ob_*()');
}
$app = $this->app;
$parameters = array('error_title' => 'error', 'error_message' => 'error');
$response = $app->render('error.twig', $parameters, new StreamedResponse());
$this->assertEquals('Symfony\\Component\\HttpFoundation\\StreamedResponse', get_class($response));
ob_start();
$response->send();
$this->assertStringStartsWith('<!doctype html>', ob_get_clean());
}