private function extractTokenDataFromResponse(Response $response)
{
$this->assertEquals($response->getStatusCode(), 302);
$location = $response->getHttpHeader('Location');
$this->assertNotContains('error', $location);
$parts = parse_url($location);
$this->assertArrayHasKey('fragment', $parts);
$this->assertFalse(isset($parts['query']));
parse_str($parts['fragment'], $params);
$this->assertNotNull($params);
$this->assertArrayHasKey('id_token', $params);
$this->assertArrayNotHasKey('access_token', $params);
list($headb64, $payloadb64, $signature) = explode('.', $params['id_token']);
$jwt = new Jwt();
$header = json_decode($jwt->urlSafeB64Decode($headb64), true);
$payload = json_decode($jwt->urlSafeB64Decode($payloadb64), true);
return array($header, $payload, $signature);
}
