From 3121d45269f99e4f103ab5b830d517ded30081a8 Mon Sep 17 00:00:00 2001
From: Manuel Mausz <manuel@mausz.at>
Date: Mon, 17 Jun 2019 10:24:03 +0200
Subject: [PATCH] Add test for perl #134169
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Signed-off-by: Petr Písař <ppisar@redhat.com>
---
 t/op/groups.t | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/t/op/groups.t b/t/op/groups.t
index e50c50a8c1..7e064cc21f 100644
--- a/t/op/groups.t
+++ b/t/op/groups.t
@@ -51,7 +51,7 @@ sub Test {
     my %basegroup = basegroups( $pwgid, $pwgnam );
     my @extracted_supplementary_groups = remove_basegroup( \ %basegroup, \ @extracted_groups );
 
-    plan 2;
+    plan 3;
 
 
     # Test: The supplementary groups in $( should match the
@@ -121,6 +121,26 @@ sub Test {
     $gid_count->{0} //= 0;
     ok 0 == $pwgid || $gid_count->{0} < 2, "groupstype should be type short, not long";
 
+    SKIP: {
+        # try to add a group as supplementary group
+        my $root_uid = 0;
+        skip "uid!=0", 1 if $< != $root_uid and $> != $root_uid;
+        my @groups = split ' ', $);
+        my @sup_group;
+        setgrent;
+        while(my @ent = getgrent) {
+            next if grep { $_ == $ent[2] } @groups;
+            @sup_group = @ent;
+            last;
+        }
+        endgrent;
+        skip "No group found we could add as a supplementary group", 1
+            if (!@sup_group);
+        $) = "$) @sup_group[2]";
+        my $ok = grep { $_ == $sup_group[2] } split ' ', $);
+        ok $ok, "Group `$sup_group[0]' added as supplementary group";
+    }
+
     return;
 }
 
-- 
2.20.1