Re: [PATCH v2 2/7] t3705: add tests for `git add` in sparse checkouts

>
> We already have a couple tests for `add` with SKIP_WORKTREE entries in
> t7012, but these only cover the most basic scenarios. As we will be
> changing how `add` deals with sparse paths in the subsequent commits,
> let's move these two tests to their own file and add more test cases
> for different `add` options and situations. This also demonstrates two
> options that don't currently respect SKIP_WORKTREE entries: `--chmod`
> and `--renormalize`.
>
> Signed-off-by: Matheus Tavares <matheus.bernardino@usp.br>
> ---
>  t/t3705-add-sparse-checkout.sh   | 96 ++++++++++++++++++++++++++++++++
>  t/t7012-skip-worktree-writing.sh | 19 -------
>  2 files changed, 96 insertions(+), 19 deletions(-)
>  create mode 100755 t/t3705-add-sparse-checkout.sh
>
> diff --git a/t/t3705-add-sparse-checkout.sh b/t/t3705-add-sparse-checkout.sh
> new file mode 100755
> index 0000000000..9bb5dc2389
> --- /dev/null
> +++ b/t/t3705-add-sparse-checkout.sh
> @@ -0,0 +1,96 @@
> +#!/bin/sh
> +
> +test_description='git add in sparse checked out working trees'
> +
> +. ./test-lib.sh
> +
> +SPARSE_ENTRY_BLOB=""
> +
> +# Optionally take a printf format string to write to the sparse_entry file
> +setup_sparse_entry () {
> +       rm -f sparse_entry &&

> +
> +       if test $# -eq 1
> +       then
> +               printf "$1" >sparse_entry
> +       else
> +               >sparse_entry
> +       fi &&
> +       git add sparse_entry &&
> +       git update-index --skip-worktree sparse_entry &&
> +       SPARSE_ENTRY_BLOB=$(git rev-parse :sparse_entry)
> +}
> +
> +test_sparse_entry_unchanged () {
> +       echo "100644 $SPARSE_ENTRY_BLOB 0       sparse_entry" >expected &&
> +       git ls-files --stage sparse_entry >actual &&
> +       test_cmp expected actual
> +}
> +
> +setup_gitignore () {
> +       test_when_finished rm -f .gitignore &&
> +       cat >.gitignore <<-EOF
> +       *
> +       !/sparse_entry
> +       EOF
> +}
> +
> +test_expect_success 'git add does not remove sparse entries' '
> +       setup_sparse_entry &&
> +       rm sparse_entry &&
> +       git add sparse_entry &&
> +       test_sparse_entry_unchanged
> +'
> +
> +test_expect_success 'git add -A does not remove sparse entries' '
> +       setup_sparse_entry &&
> +       rm sparse_entry &&
> +       setup_gitignore &&
> +       git add -A &&
> +       test_sparse_entry_unchanged
> +'
> +
> +test_expect_success 'git add . does not remove sparse entries' '
> +       setup_sparse_entry &&
> +       rm sparse_entry &&
> +       setup_gitignore &&
> +       git add . &&
> +       test_sparse_entry_unchanged
> +'
> +
> +for opt in "" -f -u --ignore-removal --dry-run
> +do
> +       test_expect_success "git add${opt:+ $opt} does not update sparse entries" '
> +               setup_sparse_entry &&
> +               echo modified >sparse_entry &&
> +               git add $opt sparse_entry &&
> +               test_sparse_entry_unchanged
> +       '
> +done
> +
> +test_expect_success 'git add --refresh does not update sparse entries' '
> +       setup_sparse_entry &&
> +       git ls-files --debug sparse_entry | grep mtime >before &&
> +       test-tool chmtime -60 sparse_entry &&
> +       git add --refresh sparse_entry &&
> +       git ls-files --debug sparse_entry | grep mtime >after &&
> +       test_cmp before after
> +'
> +
> +test_expect_failure 'git add --chmod does not update sparse entries' '
> +       setup_sparse_entry &&
> +       git add --chmod=+x sparse_entry &&
> +       test_sparse_entry_unchanged &&
> +       ! test -x sparse_entry
> +'
> +
> +test_expect_failure 'git add --renormalize does not update sparse entries' '
> +       test_config core.autocrlf false &&
> +       setup_sparse_entry "LINEONE\r\nLINETWO\r\n" &&
> +       echo "sparse_entry text=auto" >.gitattributes &&
> +       git add --renormalize sparse_entry &&
> +       test_sparse_entry_unchanged
> +'
> +
> +test_done
> diff --git a/t/t7012-skip-worktree-writing.sh b/t/t7012-skip-worktree-writing.sh
> index e5c6a038fb..217207c1ce 100755
> --- a/t/t7012-skip-worktree-writing.sh
> +++ b/t/t7012-skip-worktree-writing.sh
> @@ -60,13 +60,6 @@ setup_absent() {
>         git update-index --skip-worktree 1
>  }
>
> -test_absent() {
> -       echo "100644 $EMPTY_BLOB 0      1" > expected &&
> -       git ls-files --stage 1 > result &&
> -       test_cmp expected result &&
> -       test ! -f 1
> -}
> -
>  setup_dirty() {
>         git update-index --force-remove 1 &&
>         echo dirty > 1 &&
> @@ -100,18 +93,6 @@ test_expect_success 'index setup' '
>         test_cmp expected result
>  '
>
> -test_expect_success 'git-add ignores worktree content' '
> -       setup_absent &&
> -       git add 1 &&
> -       test_absent
> -'
> -
> -test_expect_success 'git-add ignores worktree content' '
> -       setup_dirty &&
> -       git add 1 &&
> -       test_dirty
> -'
> -
>  test_expect_success 'git-rm fails if worktree is dirty' '
>         setup_dirty &&
>         test_must_fail git rm 1 &&
> --
> 2.30.1