diff --git a/app/Config/Constants.php b/app/Config/Constants.php
index 47b92f8..d92bb5e 100644
--- a/app/Config/Constants.php
+++ b/app/Config/Constants.php
@@ -25,6 +25,19 @@ defined('APP_NAMESPACE') || define('APP_NAMESPACE', 'App');
  */
 defined('COMPOSER_PATH') || define('COMPOSER_PATH', ROOTPATH . 'vendor/autoload.php');
 
+/*
+ | --------------------------------------------------------------------------
+ | Test Support Path
+ | --------------------------------------------------------------------------
+ |
+ | Spark may be run with CI_ENVIRONMENT=testing before CodeIgniter's PHPUnit
+ | bootstrap has had a chance to define SUPPORTPATH. The framework autoloader
+ | expects this constant when that environment flag is present.
+ */
+if (! defined('SUPPORTPATH') && defined('TESTPATH') && is_dir(TESTPATH . '_support')) {
+    define('SUPPORTPATH', realpath(TESTPATH . '_support') . DIRECTORY_SEPARATOR);
+}
+
 /*
  |--------------------------------------------------------------------------
  | Timing Constants