test "$parent_head" = "$child_head"
'
+test_expect_success 'warn pushing to delete current branch' '
+ rewound_push_setup &&
+ (
+ cd child &&
+ git send-pack ../parent :refs/heads/master 2>errs
+ ) &&
+ grep "warning: to refuse deleting" child/errs &&
+ (
+ cd parent &&
+ test_must_fail git rev-parse --verify master
+ )
+'
+
test_done