gistfile1.php

// Get database prefix.
$database_prefix = $GLOBALS['drupal_test_info']['test_run_id'];

// Generate user agent string.
if (preg_match('/simpletest\d+/', $database_prefix, $matches)) {
  $user_agent = drupal_generate_test_ua($matches[0]);
}
else {
  throw new Exception('Test is not ready to init connection to Webdriver (no database prefix)');
}

gistfile1.txt

// Get database prefix.
$database_prefix = $GLOBALS['drupal_test_info']['test_run_id'];

// Generate user agent string.
if (preg_match('/simpletest\d+/', $database_prefix, $matches)) {
  $user_agent = drupal_generate_test_ua($matches[0]);
}
else {
  throw new Exception('Test is not ready to init connection to Webdriver (no database prefix)');
}