summary: Check that UC debug settings work

details: |
  Check that UC debug settings enable logging for snapd and
  setting the log level for systemd as expected.

# Some systemctl calls are not supported on UC16
systems: [-ubuntu-core-16-*]

execute: |
  get_log_level() {
      if os.query is-core-le 18; then
          systemd-analyze get-log-level
      else
          systemctl log-level
      fi
  }

  if [ "$SPREAD_REBOOT" = 0 ]; then
      # Remove the variable introduced by prepare.sh
      sed -i 's/SNAPD_DEBUG=1//' /etc/systemd/system/snapd.service.d/local.conf
      systemctl daemon-reload
      systemctl restart snapd
      NOMATCH SNAPD_DEBUG=1 < /proc/"$(pgrep snapd)"/environ

      # Check enable/disable snapd debug traces
      snap set system debug.snapd.log=true
      MATCH SNAPD_DEBUG=1 < /var/lib/snapd/environment/snapd.conf
      systemctl restart snapd
      MATCH SNAPD_DEBUG=1 < /proc/"$(pgrep snapd)"/environ
      snap set system debug.snapd.log=false
      not test -f /var/lib/snapd/environment/snapd.conf
      systemctl restart snapd
      NOMATCH SNAPD_DEBUG=1 < /proc/"$(pgrep snapd)"/environ

      # Check set systemd log level
      log_level=$(get_log_level)
      test "$log_level" = info
      snap set system debug.systemd.log-level=debug
      MATCH LogLevel=debug < /etc/systemd/system.conf.d/20-debug_systemd_log-level.conf
      log_level=$(get_log_level)
      test "$log_level" = debug

      # Reboot to check log-level is as expected when systemd restarts
      REBOOT
  else
      log_level=$(get_log_level)
      test "$log_level" = debug

      snap set system debug.systemd.log-level=info
      MATCH LogLevel=info < /etc/systemd/system.conf.d/20-debug_systemd_log-level.conf
      log_level=$(get_log_level)
      test "$log_level" = info
  fi