[Bug 939528] Re: auto-upgrade-tester: Add a post-upgrade test to check for obsolete config files

[Jean-Baptiste Lallement]

I pushed a script update-
manager/AutoUpgradeTester/post_upgrade_tests/test_obsolete_conffiles.py
to the auto-upgrade-tester that will be active with next run.

** Changed in: update-manager (Ubuntu)
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/939528

Title:
  auto-upgrade-tester: Add a post-upgrade test to check for obsolete
  config files

Status in “update-manager” package in Ubuntu:
  Fix Released

Bug description:
  auto-upgrade-tester: Add a post-upgrade test to check for obsolete config files.
  Test fails if the list is not empty.

  Script from upgrade-system
    #################################
    ### REMOVING OBSOLETE CONFIGS ###
    #################################
    echo "${BOLD}D) Checking for obsolete configurations:${RESET}"
    ORPHANS=$( dpkg-query -W -f='${Conffiles}\n' | grep obsolete | awk {'print $1'} )
    ##DEPENDS: dpkg (main/required), grep (main/required), mawk (main/required).
    case $ORPHANS in
     "")
      echo "I: No obsolete configuration to purge."
      break
      ;;
     *)
      echo "I: Removing obsolete configurations..."
      unique(){
       dpkg -S $ORPHANS | cut -d ':' -f 1 | uniq
       ##DEPENDS: dpkg (main/required), dpkg (main/required), coreutils (main/required).
       }
      UNIQUE=$( unique )
      NUMBER=$( unique | wc -l )
      echo "I: Number of packages affected: $NUMBER."
      dpkg -S $ORPHANS
      ##DEPENDS: dpkg (main/required).
      echo "${YELLOW}W: BEWARE OF FALSE POSITIVES! DELETE WITH EXTREME CAUTION!${RESET}"
      rm -i $ORPHANS
      ##DEPENDS: coreutils (main/required).
      apt-get $NOTTY --reinstall install ${UNIQUE}
      ##DEPENDS: apt (main/important).
      ### Escape dangerous purges automatically.
      if [ $? != 0 ]
      then
              break
      fi
      ;;
    esac

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