test: update integration tests.

tests/integration/hostname.bats

@@ -0,0 +1,29 @@
+#!/usr/bin/env bats
+# apparmor.d - Full set of apparmor profiles
+# Copyright (C) 2024 Alexandre Pujol <alexandre@pujol.io>
+# SPDX-License-Identifier: GPL-2.0-only
+
+load common
+
+@test "hostname: Show current host name" {
+    hostname
+}
+
+@test "hostname: Show the network address of the host name" {
+    hostname -i
+}
+
+@test "hostname: Show all network addresses of the host" {
+    hostname -I
+}
+
+@test "hostname: Show the FQDN (Fully Qualified Domain Name)" {
+    hostname --fqdn
+}
+
+@test "hostname: Set current host name" {
+    name=$(hostname)
+    sudo hostname "new-$(hostname)"
+    sudo hostname "$name"
+}
+