Index: modules/simpletest/drupal_web_test_case.php
===================================================================
RCS file: /cvs/drupal/drupal/modules/simpletest/drupal_web_test_case.php,v
retrieving revision 1.19
diff -u -p -r1.19 drupal_web_test_case.php
--- modules/simpletest/drupal_web_test_case.php	17 Jun 2008 01:12:50 -0000	1.19
+++ modules/simpletest/drupal_web_test_case.php	24 Jun 2008 21:20:27 -0000
@@ -344,6 +344,9 @@ class DrupalWebTestCase extends UnitTest
     include_once './includes/install.inc';
     drupal_install_system();
 
+    // Refresh the module list to clear the static variable.
+    module_list(TRUE, FALSE);
+
     // Add the specified modules to the list of modules in the default profile.
     $args = func_get_args();
     $modules = array_unique(array_merge(drupal_verify_profile('default', 'en'), $args));