diff --git a/tests/libraries.test b/tests/libraries.test
index c361bcd..8507430 100644
--- a/tests/libraries.test
+++ b/tests/libraries.test
@@ -430,5 +430,13 @@ class LibrariesTestCase extends DrupalWebTestCase {
     }
   }
 
+  /**
+   * Resets all static and database caches of Libraries API.
+   */
+  function resetCache() {
+    drupal_static_reset('libraries_get_path');
+    drupal_static_reset('libraries_info');
+    cache_clear_all('*', 'cache_libraries', TRUE);
+  }
 }