testsAndMisc/linux_configuration/tests/test_shutdown_timer_monitor.sh

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#!/bin/bash
# Regression tests for shutdown-timer-monitor.sh dispatcher behavior.
set -euo pipefail
SCRIPT_DIR=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)
REPO_DIR=$(cd -- "$SCRIPT_DIR/.." && pwd)
TARGET_SCRIPT="$REPO_DIR/scripts/system-maintenance/bin/shutdown-timer-monitor.sh"
SETUP_SCRIPT="$REPO_DIR/scripts/digital_wellbeing/setup_midnight_shutdown.sh"
fail() {
printf 'FAIL: %s\n' "$1" >&2
exit 1
}
assert_equals() {
local expected="$1"
local actual="$2"
local context="$3"
if [[ "$expected" != "$actual" ]]; then
fail "$context (expected: '$expected', actual: '$actual')"
fi
}
TMP_DIR=$(mktemp -d)
cleanup() {
rm -rf "$TMP_DIR"
}
trap cleanup EXIT
WORKTREE="$TMP_DIR/worktree"
BIN_DIR="$TMP_DIR/bin"
mkdir -p "$WORKTREE/scripts/system-maintenance/bin" "$BIN_DIR"
cp "$TARGET_SCRIPT" "$WORKTREE/scripts/system-maintenance/bin/shutdown-timer-monitor.sh"
cat >"$BIN_DIR/busctl" <<'EOF'
#!/bin/bash
if [[ $1 == monitor ]]; then
printf '%s\n' "${MOCK_BUSCTL_LINE:-no relevant event}" | while read -r line; do
printf '%s\n' "$line"
done
exit 0
fi
printf 'unexpected busctl args: %s\n' "$*" >&2
exit 1
EOF
chmod +x "$BIN_DIR/busctl"
cat >"$BIN_DIR/systemctl" <<'EOF'
#!/bin/bash
case "$*" in
'is-enabled day-specific-shutdown.timer'|'is-active day-specific-shutdown.timer')
exit 0
;;
'daemon-reload'|'enable day-specific-shutdown.timer'|'start day-specific-shutdown.timer')
exit 0
;;
*)
printf 'unexpected systemctl args: %s\n' "$*" >&2
exit 1
;;
esac
EOF
chmod +x "$BIN_DIR/systemctl"
cat >"$BIN_DIR/sleep" <<'EOF'
#!/bin/bash
printf '%s\n' "$1" >> "${SLEEP_LOG:?}"
exit 99
EOF
chmod +x "$BIN_DIR/sleep"
cat >"$BIN_DIR/tee" <<'EOF'
#!/bin/bash
while IFS= read -r _; do
:
done
EOF
chmod +x "$BIN_DIR/tee"
run_case() {
local expected_mode="$1"
local busctl_present="$2"
local sleep_log="$TMP_DIR/sleep.log"
local mode_file="$TMP_DIR/mode.log"
: >"$sleep_log"
: >"$mode_file"
if [[ $busctl_present -eq 0 ]]; then
mv "$BIN_DIR/busctl" "$BIN_DIR/busctl.off"
fi
mode=$(env -i PATH="$BIN_DIR" SLEEP_LOG="$sleep_log" SHUTDOWN_TIMER_MONITOR_SKIP_MAIN=1 /bin/bash -c \
"source '$WORKTREE/scripts/system-maintenance/bin/shutdown-timer-monitor.sh'; \
timer_needs_restoration() { return 1; }; \
restore_timer() { :; }; \
monitor_with_dbus() { printf 'dbus'; }; \
monitor_with_polling() { printf 'polling'; }; \
start_monitoring")
assert_equals "$expected_mode" "$mode" 'shutdown timer monitor should choose the expected dispatcher'
if [[ -f "$BIN_DIR/busctl.off" ]]; then
mv "$BIN_DIR/busctl.off" "$BIN_DIR/busctl"
fi
}
printf 'Checking D-Bus path is preferred when busctl exists...\n'
run_case dbus 1
printf 'Checking polling fallback is used when busctl is absent...\n'
run_case polling 0
printf 'Checking installer template stays in sync with the event-driven monitor...\n'
grep -Fq 'monitor_with_dbus()' "$SETUP_SCRIPT" \
|| fail 'setup_midnight_shutdown.sh should install the D-Bus monitor helper'
grep -Fq 'start_monitoring()' "$SETUP_SCRIPT" \
|| fail 'setup_midnight_shutdown.sh should install the start_monitoring dispatcher'
grep -Fq 'if command -v busctl &>/dev/null; then' "$SETUP_SCRIPT" \
|| fail 'setup_midnight_shutdown.sh should prefer busctl when available'
printf 'shutdown-timer-monitor.sh regression checks passed.\n'