set -eu

scenario=$1

if test "$scenario" = bare; then

git init -q --bare --object-format="$2" --ref-format="$3" repo

exit 0

git init -q --object-format="$2" --ref-format="$3" repo

cd repo

case "$scenario" in

objects_index_commit_and_merge)

mkdir dir

for name in 'space name' --option unicode-é dir/file; do printf '%s' "$name" > "$name"; done

case "$(uname -s)" in MINGW*|MSYS*|CYGWIN*) ;; *)

for name in $'line\nname' $'tab\tname'; do printf '%s' "$name" > "$name"; done ;;

esac

;;

index_flags_are_preserved_until_path_is_staged)

touch intent

printf skip > skip

git add -N -- intent

git add -- skip

git update-index --skip-worktree -- skip

;;

commit_hooks_use_git_and_keep_their_index_changes)

printf before > file

git add file

mkdir -p .git/hooks

printf '#!/bin/sh\nprintf after >file\ngit add -- file\n' > .git/hooks/pre-commit

# The generated hook expands its own arguments.

# shellcheck disable=SC2016

printf '#!/bin/sh\nprintf " hook" >>"$1"\n' > .git/hooks/commit-msg

chmod +x .git/hooks/pre-commit .git/hooks/commit-msg

;;

git_index_storage_variants)

mkdir inside outside

printf inside/file > inside/file

printf outside/file > outside/file

git add inside outside

git commit -qm initial

case "$4" in

v4) git update-index --index-version=4 ;;

split) git update-index --split-index ;;

sparse) git sparse-checkout init --cone --sparse-index; git sparse-checkout set inside ;;

esac

;;

trailer_commands_are_not_executed)

git config trailer.custom.cmd 'touch executed'

;;

pending_index_queries_removal_and_failed_update)

printf old > file

git add file

;;

malformed_index_failure_is_propagated)

printf 'not an index' > .git/index

;;

failed_hook_retains_index_edit_without_advancing_head)

printf old > file

git add file

git commit -qm initial

printf '#!/bin/sh\nprintf changed > file\ngit add file\nexit 1\n' > .git/hooks/pre-commit

chmod +x .git/hooks/pre-commit

;;

commit_and_tag_metadata_preserves_encoding_signature_and_message)

tree=$(git mktree </dev/null)

{

printf 'tree %s\n' "$tree"

printf 'author M\351 <name@example.invalid> 1112911991 -0200\n'

printf 'committer M\351 <name@example.invalid> 1112911991 -0200\n'

printf 'encoding ISO-8859-1\nmergetag object %s\n type tree\n tag merged\n' "$tree"

printf 'gpgsig fake signature\n continuation\n\n\nexact caf\351\n\n'

} | git hash-object -w -t commit --stdin > ../commit-id

commit=$(cat ../commit-id)

{

printf 'object %s\ntype commit\ntag arbitrary\n' "$commit"

printf 'tagger Tagger <tag@example.invalid> 1112911991 +0200\n\n\nmessage\n\n'

} | git hash-object -w -t tag --stdin > ../tag-id

;;

tree_names_do_not_require_worktree_support|index_stages_missing_objects_and_atomic_failure|revision_injection_cannot_write_or_checkout) ;;

*) exit 1 ;;