Ticket #41485: 41485.patch

tests/phpunit/includes/mock-mailer.php

@@ -94 +94 @@
  */
 function reset_phpmailer_instance() {
         $mailer = tests_retrieve_phpmailer_instance();
-        if ( $mailer && isset( $mailer->mock_sent ) ) {
-                unset( $mailer->mock_sent );
+        if ( $mailer ) {
+                $GLOBALS['phpmailer'] = new MockPHPMailer( true );
                 return true;
         }