From 9f55d48ba50afaad4557710f983d2971e9746582 Mon Sep 17 00:00:00 2001
From: Franck Bui <fbui@suse.com>
Date: Fri, 8 Apr 2022 08:32:04 +0200
Subject: [PATCH] test tmpfiles: add a test for 'w+'

---
 test/units/testsuite-22.03.sh | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/test/units/testsuite-22.03.sh b/test/units/testsuite-22.03.sh
index 404e33e2fa..a9df3d6bdd 100755
--- a/test/units/testsuite-22.03.sh
+++ b/test/units/testsuite-22.03.sh
@@ -186,6 +186,7 @@ test ! -e /tmp/F/daemon/unsafe-symlink/exploit
 # 'w'
 #
 touch /tmp/w/overwritten
+touch /tmp/w/appended
 
 ### nop if the target does not exist.
 systemd-tmpfiles --create - <<EOF
@@ -205,13 +206,22 @@ EOF
 test -f /tmp/w/overwritten
 test "$(< /tmp/w/overwritten)" = "old content"
 
-### new content is overwritten
+### old content is overwritten
 systemd-tmpfiles --create - <<EOF
 w     /tmp/w/overwritten    0644 - - - new content
 EOF
 test -f /tmp/w/overwritten
 test "$(< /tmp/w/overwritten)" = "new content"
 
+### append lines
+systemd-tmpfiles --create - <<EOF
+w+    /tmp/w/appended    0644 - - - 1
+w+    /tmp/w/appended    0644 - - - 2\n
+w+    /tmp/w/appended    0644 - - - 3
+EOF
+test -f /tmp/w/appended
+test "$(< /tmp/w/appended)" = "$(echo -ne '12\n3')"
+
 ### writing into an 'exotic' file should be allowed.
 systemd-tmpfiles --create - <<EOF
 w     /dev/null    - - - - new content