test: update integration tests.

tests/integration/utils/df.bats

@@ -14,7 +14,7 @@ load ../common
 }
 
 @test "df: Display the filesystem and its disk usage containing the given file or directory" {
-    df apparmor.d/
+    df /etc/apparmor.d/
 }
 
 @test "df: Include statistics on the number of free inodes" {

tests/integration/utils/eject.bats

@@ -0,0 +1,14 @@
+#!/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 "eject: Display the default device" {
+    eject -d || true
+}
+
+@test "eject: Eject the default device" {
+    eject || true
+}

tests/integration/utils/hwclock.bats

@@ -0,0 +1,19 @@
+#!/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 "hwclock: Display the current time as reported by the hardware clock" {
+    hwclock
+}
+
+@test "hwclock: Write the current software clock time to the hardware clock (sometimes used during system setup)" {
+    hwclock --systohc
+}
+
+@test "hwclock: Write the current hardware clock time to the software clock" {
+    hwclock --hctosys
+}
+

tests/integration/utils/zramctl.bats

@@ -0,0 +1,18 @@
+#!/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 "zramctl: Check if zram is enabled; enable it if needed" {
+    lsmod | grep -i zram || sudo modprobe zram
+}
+
+@test "zramctl: Find and initialize the next free zram device to a 1 GB virtual drive using LZ4 compression" {
+    sudo zramctl --find --size 1GB --algorithm lz4
+}
+
+@test "zramctl: List currently initialized devices" {
+    sudo zramctl
+}