php - Symfony2 PHPUnit functional test has x-debug-token header instead of X-Debug-Token -

i'm working on symfony 2.8.2 application.

now, want check through profiler if email sent successfully. enabled profiler in config_test.yml that

framework:     test: ~     session:         storage_id: session.storage.mock_file     profiler:         enabled: true         collect: false 

so, enable profiler in client , request in phpunit functional test:

$client->enableprofiler(); $client->request($method, $path, $requestparameters, array(), $headers); $mailcollector = $client->getprofile()->getcollector('swiftmailer'); 

but $client->getprofile() returns false.

i found problem in symfony profiler when @ line 84 tries token

if (!$token = $response->headers->get('x-debug-token')) {      return false; } return $this->loadprofile($token); 

i debugged response , found has 4 headers , 1 of them named 'x-debug-token'.

why header have name? how can modify header profiler?

thanks!