tests(integration): add more tests.

tests/bats/chsh.bats

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+#!/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_file() {
+    aa_setup
+}
+
+# bats test_tags=chsh
+@test "chsh: [l]ist available shells" {
+    chsh --list-shells
+    aa_check
+}
+
+# bats test_tags=chsh
+@test "chsh: Set a specific login [s]hell for the current user" {
+    chsh --shell /usr/bin/bash
+    aa_check
+}
+
+# bats test_tags=chsh
+@test "chsh: Set a login [s]hell for a specific user" {
+    sudo chsh --shell /usr/bin/sh root
+    aa_check
+}

tests/bats/lsusb.bats

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+#!/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_file() {
+    aa_setup
+}
+
+# bats test_tags=lsusb
+@test "lsusb: List all the USB devices available" {
+    lsusb
+    aa_check
+}
+
+# bats test_tags=lsusb
+@test "lsusb: List the USB hierarchy as a tree" {
+    lsusb -t
+    aa_check
+}
+
+# bats test_tags=lsusb
+@test "lsusb: List verbose information about USB devices" {
+    lsusb --verbose
+    aa_check
+}

tests/bats/useradd.bats

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+#!/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_file() {
+    aa_setup
+}
+
+# bats test_tags=useradd
+@test "useradd: Create a new user with the specified shell" {
+    sudo useradd --shell /bin/bash --create-home user2
+    aa_check
+}
+
+# bats test_tags=useradd
+@test "useradd: Create a new user with the specified user ID" {
+    sudo useradd --uid 3000 user3
+    aa_check
+}
+
+# bats test_tags=useradd
+@test "useradd: Create a new user belonging to additional groups (mind the lack of whitespace)" {
+    sudo useradd --groups adm user4
+    aa_check
+}
+
+
+# bats test_tags=useradd
+@test "useradd: Create a new system user without the home directory" {
+    sudo useradd --system sys2
+    aa_check
+}
+
+# bats test_tags=userdel
+@test "userdel: Remove a user" {
+    sudo userdel user3
+    sudo userdel user4
+    sudo userdel sys2
+    aa_check
+}
+
+# bats test_tags=userdel
+@test "userdel: Remove a user along with the home directory and mail spool" {
+    sudo userdel --remove user2
+    aa_check
+}