Re: [PATCH v2 03/11] cache-tree tests: refactor overly complex function
From: Junio C Hamano <hidden>
Date: 2021-01-16 21:52:17
Ævar Arnfjörð Bjarmason [off-list ref] 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.
quoted hunk ↗ jump to hunk
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 <redacted> --- 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 () {