From 2e4e43a6910393d681d095f515d41232c2372966 Mon Sep 17 00:00:00 2001 From: Elijah Newren Date: Wed, 12 May 2021 17:28:17 +0000 Subject: [PATCH] t7300: add testcase showing unnecessary traversal into ignored directory The PNPM package manager is apparently creating deeply nested (but ignored) directory structures; traversing them is costly performance-wise, unnecessary, and in some cases is even throwing warnings/errors because the paths are too long to handle on various platforms. Add a testcase that checks for such unnecessary directory traversal. Signed-off-by: Elijah Newren Signed-off-by: Junio C Hamano --- t/t7300-clean.sh | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/t/t7300-clean.sh b/t/t7300-clean.sh index a74816ca8b..07e8ba2d4b 100755 --- a/t/t7300-clean.sh +++ b/t/t7300-clean.sh @@ -746,4 +746,27 @@ test_expect_success 'clean untracked paths by pathspec' ' test_must_be_empty actual ' +test_expect_failure 'avoid traversing into ignored directories' ' + test_when_finished rm -f output error trace.* && + test_create_repo avoid-traversing-deep-hierarchy && + ( + cd avoid-traversing-deep-hierarchy && + + mkdir -p untracked/subdir/with/a && + >untracked/subdir/with/a/random-file.txt && + + GIT_TRACE2_PERF="$TRASH_DIRECTORY/trace.output" \ + git clean -ffdxn -e untracked + ) && + + # Make sure we only visited into the top-level directory, and did + # not traverse into the "untracked" subdirectory since it was excluded + grep data.*read_directo.*directories-visited trace.output | + cut -d "|" -f 9 >trace.relevant && + cat >trace.expect <<-EOF && + ..directories-visited:1 + EOF + test_cmp trace.expect trace.relevant +' + test_done