Fix and improve branch update instructions

  - commits_behind_count=$(git rev-list --count $CI_COMMIT_SHA..origin/$CI_MERGE_REQUEST_TARGET_BRANCH_NAME)

.check-commits-behind-count-in-compare-jobs: &check-commits-behind-count-in-compare-jobs

  - if [ $commits_behind_count -ne 0 ]; then echo "Your branch is not up-to-date with main -> Compare tests will not run as they can contain false negatives this way.\nMain might have changed during your pipeline run. Run 'git merge origin/main' to update."; exit 1; fi

  - |

    if [ $commits_behind_count -ne 0 ]; then

      echo "Your branch is not up-to-date with main -> Compare tests will not run as they can contain false negatives this way."

      echo "Main might have changed during your pipeline run. Run 'git pull origin $CI_MERGE_REQUEST_TARGET_BRANCH_NAME' to update."

      exit 1

    fi

.copy-ltv-files-to-testv-dir: &copy-ltv-files-to-testv-dir

    - cp "$LTV_DIR"/*.wav scripts/testv/

  script:

    - *get-commits-behind-count

    - echo $commits_behind_count

    - if [ $commits_behind_count -eq 0 ]; then exit 0; else echo "Your branch is behind main, run 'git merge origin/main' to update."; exit 1; fi;

    - |

      if [ $commits_behind_count -ne 0 ]; then

        echo "Your branch is behind the target branch, run 'git pull origin $CI_MERGE_REQUEST_TARGET_BRANCH_NAME' to update."

        exit 1

      fi

branch-is-up-to-date-with-target-post:

  extends:

  script:

    - *get-commits-behind-count

    - echo $commits_behind_count

    - if [ $commits_behind_count -eq 0 ]; then exit 0; else echo "Your branch is behind main, possibly main changed during your pipeline run, run 'git merge origin/main' to update." exit 1; fi;

    - |

      if [ $commits_behind_count -ne 0 ]; then

        echo "Your branch is behind the target branch, possibly main changed during your pipeline run, run 'git pull origin $CI_MERGE_REQUEST_TARGET_BRANCH_NAME' to update."

        exit 1

      fi

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