--- a/tests/test-amend.t	Fri Dec 06 14:01:29 2019 +0100
+++ b/tests/test-amend.t	Sun Sep 29 11:47:18 2019 +0530
@@ -165,3 +165,8 @@
    -i --interactive         use interactive mode
   
   (some details hidden, use --verbose to show complete help)
+
+Check that we abort if --patch and --extract both are used at once
+  $ hg amend --patch --extract
+  abort: cannot use both --patch and --extract
+  [255]