I maintain a backport of Drupal 7 SimpleTest for use with Drupal 6 as the SimpleTest module 2.x branch. A fair amount of work goes into maintaining the code even though it is a backport.

Tonight I finished up a fresh backport of Drupal 7 and made a release along with a number of other changes. Please update to SimpleTest 6.x-2.8 and report any issues you find.

Note to developers

Since this release includes a fresh backport it also contains an API change that you need to be aware of. All getInfo() methods need to be changed to static before using this release. If you are a module developer or maintain tests internally please make sure you update them.

Old

function getInfo() {
  return array(
    'name' => t('[name]'),
    'description' => t('[description]'),
    'group' => t('[group]'),
  );
}

New

public static function getInfo() {
  return array(
    'name' => t('[name]'),
    'description' => t('[description]'),
    'group' => t('[group]'),
  );
}