UPS and DHL Express test mode

functions.php

@@ -16,4 +16,8 @@ add_filter( 'woocommerce_background_image_regeneration', '__return_false' );
 /**
  * Send tracker data to testdata.wpdesk.org instead of data.wpdesk.org
  */
-add_filter( 'wpdesk_tracker_use_testdata', '__return_true' );
+add_filter( 'wpdesk_tracker_use_testdata', '__return_true' );
\ No newline at end of file
+
+add_filter( 'flexible_shipping_ups_testing', '__return_true' );
+
+add_filter( 'flexible_shipping_dhl_express_testing', '__return_true' );