2 files changed, 54 insertions, 0 deletions
diff --git a/modules/system/system.api.php b/modules/system/system.api.php
index 0efcedbc3..1349a7b8f 100644
--- a/modules/system/system.api.php
+++ b/modules/system/system.api.php
@@ -1701,5 +1701,58 @@ function hook_disable() {
 }
 
 /**
+ * Perform necessary alterations to the list of files parsed by the registry.
+ *
+ * Modules can manually modify the list of files before the registry parses
+ * them. The $modules array provides the .info file information, which includes
+ * the list of files registered to each module. Any files in the list can then
+ * be added to the list of files that the registry will parse, or modify
+ * attributes of a file.
+ *
+ * A necessary alteration made by the core SimpleTest module is to force .test
+ * files provided by disabled modules into the list of files parsed by the
+ * registry.
+ *
+ * @param $files
+ *   List of files to be parsed by the registry. The list will contain
+ *   files found in each enabled module's info file and the core includes
+ *   directory. The array is keyed by the file path and contains an array of
+ *   the related module's name and weight as used internally by
+ *   _registry_rebuild() and related functions.
+ *
+ *   For example:
+ *   @code
+ *     $files["modules/system/system.module"] = array(
+ *       'module' => 'system',
+ *       'weight' => 0,
+ *     );
+ *   @endcode
+ * @param $modules
+ *   List of all the modules provided as returned by drupal_system_listing().
+ *   The list also contains the .info file information in the property 'info'.
+ *   An additional 'dir' property has been added to the module information
+ *   which provides the path to the directory in which the module resides. The
+ *   example shows how to take advantage of the property both properties.
+ *
+ * @see _registry_rebuild()
+ * @see drupal_system_listing()
+ * @see simpletest_test_get_all()
+ */
+function hook_registry_files_alter(&$files, $module_cache) {
+  foreach ($modules as $module) {
+    // Only add test files for disabled modules, as enabled modules should
+    // already include any test files they provide.
+    if (!$module->status) {
+      $dir = $module->dir;
+      foreach ($module->info['files'] as $file) {
+        if (substr($file, -5) == '.test') {
+          $files["$dir/$file"] = array('module' => $module->name, 'weight' => $module->weight);
+        }
+      }
+    }
+  }
+}
+
+/**
  * @} End of "addtogroup hooks".
  */
diff --git a/modules/system/system.info b/modules/system/system.info
index 0afcdaf9a..9c93a0960 100644
--- a/modules/system/system.info
+++ b/modules/system/system.info
@@ -9,4 +9,5 @@ files[] = system.admin.inc
 files[] = system.queue.inc
 files[] = image.gd.inc
 files[] = system.install
+files[] = system.test
 required = TRUE