diff --git a/lib/testing/generator/data_generator.php b/lib/testing/generator/data_generator.php
index 7f99a93dfe8..b6927aba865 100644
--- a/lib/testing/generator/data_generator.php
+++ b/lib/testing/generator/data_generator.php
@@ -472,6 +472,37 @@ EOD;
         return $DB->get_record('groups', array('id'=>$id));
     }
 
+    /**
+     * Create a test group member
+     * @param array|stdClass $record
+     * @throws coding_exception
+     * @return boolean
+     */
+    public function create_group_member($record) {
+        global $DB, $CFG;
+
+        require_once($CFG->dirroot . '/group/lib.php');
+
+        $record = (array)$record;
+
+        if (empty($record['userid'])) {
+            throw new coding_exception('user must be present in testing_util::create_group_member() $record');
+        }
+
+        if (!isset($record['groupid'])) {
+            throw new coding_exception('group must be present in testing_util::create_group_member() $record');
+        }
+
+        if (!isset($record['component'])) {
+            $record['component'] = null;
+        }
+        if (!isset($record['itemid'])) {
+            $record['itemid'] = 0;
+        }
+
+        return groups_add_member($record['groupid'], $record['userid'], $record['component'], $record['itemid']);
+    }
+
     /**
      * Create a test grouping for the specified course
      *
@@ -515,6 +546,30 @@ EOD;
         return $DB->get_record('groupings', array('id'=>$id));
     }
 
+    /**
+     * Create a test grouping group
+     * @param array|stdClass $record
+     * @throws coding_exception
+     * @return boolean
+     */
+    public function create_grouping_group($record) {
+        global $DB, $CFG;
+
+        require_once($CFG->dirroot . '/group/lib.php');
+
+        $record = (array)$record;
+
+        if (empty($record['groupingid'])) {
+            throw new coding_exception('grouping must be present in testing::create_grouping_group() $record');
+        }
+
+        if (!isset($record['groupid'])) {
+            throw new coding_exception('group must be present in testing_util::create_grouping_group() $record');
+        }
+
+        return groups_assign_grouping($record['groupingid'], $record['groupid']);
+    }
+
     /**
      * Create a test scale
      * @param array|stdClass $record