tests: add a few integration tests.

tests/integration/pacman/pacman.bats

@@ -0,0 +1,34 @@
+#!/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 "pacman: Synchronize and update all packages" {
+    sudo pacman -Syu --noconfirm
+}
+
+@test "pacman: Install a new package" {
+    sudo pacman -S --noconfirm pass pass-otp
+}
+
+@test "pacman: Remove a package and its dependencies" {
+    sudo pacman -Rs --noconfirm pass-otp
+}
+
+@test "pacman: List installed packages and versions" {
+    pacman -Q
+}
+
+@test "pacman: List only the explicitly installed packages and versions" {
+    pacman -Qe
+}
+
+@test "pacman: List orphan packages (installed as dependencies but not actually required by any package)" {
+    pacman -Qtdq
+}
+
+@test "pacman: Empty the entire 'pacman' cache" {
+    sudo pacman -Scc --noconfirm
+}