function _simpletest_batch_finished($success, $results, $operations, $elapsed) {
if ($success) {
drupal_set_message(t('The test run finished in @elapsed.', array(
'@elapsed' => $elapsed,
)));
}
else {
// Use the test_id passed as a parameter to _simpletest_batch_operation().
$test_id = $operations[0][1][1];
// Retrieve the last database prefix used for testing and the last test
// class that was run from. Use the information to read the lgo file
// in case any fatal errors caused the test to crash.
list($last_prefix, $last_test_class) = simpletest_last_test_get($test_id);
simpletest_log_read($test_id, $last_prefix, $last_test_class);
drupal_set_message(t('The test run did not successfully finish.'), 'error');
drupal_set_message(t('Use the <em>Clean environment</em> button to clean-up temporary files and tables.'), 'warning');
}
module_invoke_all('test_group_finished');
}