tests: add more integration tests for core tools.

tests/bats/hostnamectl.bats

@@ -0,0 +1,27 @@
+#!/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
+
+setup() {
+    aa_setup
+}
+
+# bats test_tags=hostnamectl
+@test "hostnamectl: Get the hostname of the computer" {
+    hostnamectl
+}
+
+# bats test_tags=hostnamectl
+@test "hostnamectl: Get the location of the computer" {
+    hostnamectl location
+}
+
+# bats test_tags=hostnamectl
+@test "hostnamectl: Set the hostname of the computer" {
+    name=$(hostnamectl hostname)
+    sudo hostnamectl set-hostname "new"
+    sudo hostnamectl set-hostname "$name"
+}