check duplicate scenario

check-duplicate.nix

{
  checkDuplicateScenario = pkgs.runCommand "checkDuplicateScenario"
    { env.HISTORIES = "${snapshot-scenarioHistories}/test/scenario-histories"; } ''
    scenarioDirFiles=$(ls "$HISTORIES")
    checked=""
    for scenario1 in $scenarioDirFiles; do
      for scenario2 in $scenarioDirFiles; do
        if [ "$scenario1" = "$scenario2" ]; then
          continue
        fi
        if echo "$checked" | grep -q " $scenario2 "; then
          continue
        fi
        if [ ! -f "./$scenario1" ]; then
          cat "$HISTORIES/$scenario1" | cut -d' ' -f2- > "./$scenario1"
        fi
        if [ ! -f "./$scenario2" ]; then
          cat "$HISTORIES/$scenario2" | cut -d' ' -f2- > "./$scenario2"
        fi
        if [ "$(diff -q $scenario1 $scenario2)" = "" ]; then
          echo "Duplicate scenario found: $scenario1 and $scenario2"
          exit 1
        fi
      done
      checked="$checked $scenario1"
    done
    touch $out
  '';

}