Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx> writes:
> Refactor overly complex code added in 9c4d6c0297 (cache-tree: Write
> updated cache-tree after commit, 2014-07-13).
OK.
> Interestingly, in the numerous commits[1][2][3] who fixed commits bugs
> in this code since its introduction it seems not to have been noticed
Sorry but -ECANNOTPARSE.
> that we didn't need to be doing some dance with grep/cut/uniq/awk to
> extract this information. It can be done in a much simpler way with
> just "ls-tree" and "wc -l".
The new code seems to take advantage of the fact that the index and
HEAD are always in sync when test_cache_tree is called; it is worth
mentioning in the log message around here.
> I'm also removing the comment, because I think now that this code is
> trivial to understand it's not needed anymore.
OK.
Thanks.
> 1. c8db708d5d (t0090: avoid passing empty string to printf %d,
> 2014-09-30)
> 2. d69360c6b1 (t0090: tweak awk statement for Solaris
> /usr/xpg4/bin/awk, 2014-12-22)
> 3. 9b5a9fa60a (t0090: stop losing return codes of git commands,
> 2019-11-27)
>
> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
> ---
> t/t0090-cache-tree.sh | 16 ++++++----------
> 1 file changed, 6 insertions(+), 10 deletions(-)
>
> diff --git a/t/t0090-cache-tree.sh b/t/t0090-cache-tree.sh
> index 2e3efeb80e..f1b0a6a679 100755
> --- a/t/t0090-cache-tree.sh
> +++ b/t/t0090-cache-tree.sh
> @@ -18,20 +18,16 @@ cmp_cache_tree () {
> # correct.
> generate_expected_cache_tree_rec () {
> dir="$1${1:+/}" &&
> - # ls-files might have foo/bar, foo/bar/baz, and foo/bar/quux
> - # We want to count only foo because it's the only direct child
> - git ls-files >files &&
> - subtrees=$(grep / files|cut -d / -f 1|uniq) &&
> - subtree_count=$(echo "$subtrees"|awk -v c=0 '$1 != "" {++c} END {print c}') &&
> - entries=$(wc -l <files) &&
> - printf "SHA $dir (%d entries, %d subtrees)\n" "$entries" "$subtree_count" &&
> - for subtree in $subtrees
> + git ls-tree --name-only HEAD >files &&
> + git ls-tree --name-only -d HEAD >subtrees &&
> + printf "SHA %s (%d entries, %d subtrees)\n" "$dir" $(wc -l <files) $(wc -l <subtrees) &&
> + while read subtree
> do
> (
> cd "$subtree"
> - generate_expected_cache_tree_rec "$dir$subtree" || return 1
> + generate_expected_cache_tree_rec "$subtree" || return 1
> )
> - done
> + done <subtrees
> }
>
> test_cache_tree () {
