public function testVerifyWebhookBad() { $client = new Mailgun('key-3ax6xnjp29jd6fds4gc373sgvjxteol0'); $postData = array('timestamp' => '1403645220', 'token' => 'owyldpe6nxhmrn78epljl6bj0orrki1u3d2v5e6cnlmmuox8jr', 'signature' => '9cfc5c41582e51246e73c88d34db3af0a3a2692a76fbab81492842f000256d33'); assert(!$client->verifyWebhookSignature($postData)); }