Index: modules/simpletest/simpletest.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/simpletest/simpletest.module,v
retrieving revision 1.4
diff -u -p -r1.4 simpletest.module
--- modules/simpletest/simpletest.module	24 Jun 2008 21:51:02 -0000	1.4
+++ modules/simpletest/simpletest.module	25 Jun 2008 21:40:51 -0000
@@ -426,6 +426,10 @@ function simpletest_get_all_tests() {
         }
       }
     }
+    
+    foreach (file_scan_directory('includes', '\.test$') as $file) {
+      $files[] = $file->filename;
+    }
 
     $existing_classes = get_declared_classes();
     foreach ($files as $file) {
@@ -459,6 +463,7 @@ function simpletest_categorize_tests($te
     $info = $instance->getInfo();
     $groups[$info['group']][$test] = $instance;
   }
+  ksort($groups);
   return $groups;
 }