git: f427703f16db - main - carp tests: ensure exactly one jail is master

The branch main has been updated by kp:

URL: https://cgit.FreeBSD.org/src/commit/?id=f427703f16db6c33205307d8cc2d9d526bc1c6fd

commit f427703f16db6c33205307d8cc2d9d526bc1c6fd
Author:     Kristof Provost <kp@FreeBSD.org>
AuthorDate: 2023-03-06 12:33:50 +0000
Commit:     Kristof Provost <kp@FreeBSD.org>
CommitDate: 2023-03-07 09:51:44 +0000

    carp tests: ensure exactly one jail is master
    
    Verify that we only have one master, not two.
    
    Sponsored by:   Rubicon Communications, LLC ("Netgate")
---
 tests/sys/netinet/carp.sh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tests/sys/netinet/carp.sh b/tests/sys/netinet/carp.sh
index 95cb7847ae28..d31a17ed6beb 100755
--- a/tests/sys/netinet/carp.sh
+++ b/tests/sys/netinet/carp.sh
@@ -46,6 +46,11 @@ wait_for_carp()
 	    [ -z "$(is_master ${jail2} ${itf2})" ]; do
 		sleep 1
 	done
+
+	if [ -n "$(is_master ${jail1} ${itf1})" ] &&
+	    [ -n "$(is_master ${jail2} ${itf2})" ]; then
+		atf_fail "Both jails are master"
+	fi
 }
 
 carp_init()