diff --git a/vps-xray/tests/test-restart-schedule.sh b/vps-xray/tests/test-restart-schedule.sh
index 928dfaa..3aca17b 100644
--- a/vps-xray/tests/test-restart-schedule.sh
+++ b/vps-xray/tests/test-restart-schedule.sh
@@ -205,47 +205,53 @@ rm -f "$RESTART_STATE_FILE"
 
 # 无状态文件 → 首次必须执行
 out=$("$GUARD_BIN" 2>&1)
-is "首次执行重启"     "$(grep -c 'systemctl restart xray' "$SYSTEMCTL_LOG")" "1"
+is "首次执行重启"     "$(grep -c '^systemctl restart xray$' "$SYSTEMCTL_LOG")" "1"
 is "首次写入时间戳"   "$([ -f "$RESTART_STATE_FILE" ] && echo yes)" "yes"
 
 # 刚重启过 → 必须跳过
 : > "$SYSTEMCTL_LOG"
 out=$("$GUARD_BIN" 2>&1)
-is "刚重启过则跳过"   "$(grep -c 'systemctl restart xray' "$SYSTEMCTL_LOG")" "0"
+is "刚重启过则跳过"   "$(grep -c '^systemctl restart xray$' "$SYSTEMCTL_LOG")" "0"
 is "跳过时有提示"     "$(echo "$out" | grep -c '跳过')" "1"
 
 # 距上次 6 天 → 仍未满 7 天，跳过
 echo "$(( $(date +%s) - 6 * 86400 ))" > "$RESTART_STATE_FILE"
 : > "$SYSTEMCTL_LOG"
 "$GUARD_BIN" > /dev/null 2>&1
-is "6 天不足 7 天则跳过" "$(grep -c 'systemctl restart xray' "$SYSTEMCTL_LOG")" "0"
+is "6 天不足 7 天则跳过" "$(grep -c '^systemctl restart xray$' "$SYSTEMCTL_LOG")" "0"
 
 # 距上次 7 天差 100 秒 → 300 秒容差内，必须执行
 echo "$(( $(date +%s) - 7 * 86400 + 100 ))" > "$RESTART_STATE_FILE"
 : > "$SYSTEMCTL_LOG"
 "$GUARD_BIN" > /dev/null 2>&1
-is "容差内视为已满 7 天" "$(grep -c 'systemctl restart xray' "$SYSTEMCTL_LOG")" "1"
+is "容差内视为已满 7 天" "$(grep -c '^systemctl restart xray$' "$SYSTEMCTL_LOG")" "1"
 
 # 距上次 7 天差 600 秒 → 超出容差，跳过
 echo "$(( $(date +%s) - 7 * 86400 + 600 ))" > "$RESTART_STATE_FILE"
 : > "$SYSTEMCTL_LOG"
 "$GUARD_BIN" > /dev/null 2>&1
-is "超出容差仍判不足" "$(grep -c 'systemctl restart xray' "$SYSTEMCTL_LOG")" "0"
+is "超出容差仍判不足" "$(grep -c '^systemctl restart xray$' "$SYSTEMCTL_LOG")" "0"
 
 # 状态文件内容被写坏 → 按 0 处理，立即执行
 echo "garbage" > "$RESTART_STATE_FILE"
 : > "$SYSTEMCTL_LOG"
 "$GUARD_BIN" > /dev/null 2>&1
-is "状态文件非法时立即执行" "$(grep -c 'systemctl restart xray' "$SYSTEMCTL_LOG")" "1"
+is "状态文件非法时立即执行" "$(grep -c '^systemctl restart xray$' "$SYSTEMCTL_LOG")" "1"
 is "非法内容被覆盖为数字" \
    "$(grep -cE '^[0-9]+$' "$RESTART_STATE_FILE")" "1"
 
+echo "garbage" > "$RESTART_STATE_FILE"
+: > "$SYSTEMCTL_LOG"
+guard_err=$("$GUARD_BIN" 2>&1 >/dev/null)
+is "状态文件非法时不产生算术求值报错" \
+   "$(printf '%s' "$guard_err" | grep -c 'integer expression')" "0"
+
 # 每日模式：距上次 1 天即执行
 render_restart_units 1 04:00 Asia/Shanghai
 echo "$(( $(date +%s) - 86400 ))" > "$RESTART_STATE_FILE"
 : > "$SYSTEMCTL_LOG"
 "$GUARD_BIN" > /dev/null 2>&1
-is "N=1 时满一天即执行" "$(grep -c 'systemctl restart xray' "$SYSTEMCTL_LOG")" "1"
+is "N=1 时满一天即执行" "$(grep -c '^systemctl restart xray$' "$SYSTEMCTL_LOG")" "1"
 
 # 时间戳先于重启写入：用一个必定失败的 systemctl 桩验证
 cat > "${STUB}/systemctl" << 'STUBEOF'