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gc: add tests for --cruft and friends

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In 5b92477f89 (builtin/gc.c: conditionally avoid pruning objects via
loose, 2022-05-20) gc learned to respect '--cruft' and 'gc.cruftPacks'.
'--cruft' is exercised in t5329-pack-objects-cruft.sh, but in a way that
doesn't check whether a lone gc run generates these cruft packs.
'gc.cruftPacks' is never exercised.

Add some tests to exercise these options to gc in the gc test suite.

Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Emily Shaffer 2022-10-26 17:32:43 -04:00 committed by Junio C Hamano
parent 4af7188bc9
commit 12253ab6d0
1 changed files with 43 additions and 0 deletions
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43
t/t6500-gc.sh
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@ -202,6 +202,49 @@ test_expect_success 'one of gc.reflogExpire{Unreachable,}=never does not skip "e
grep -E "^trace: (built-in|exec|run_command): git reflog expire --" trace.out
'
prepare_cruft_history () {
test_commit base &&
test_commit --no-tag foo &&
test_commit --no-tag bar &&
git reset HEAD^^
}
assert_cruft_packs () {
find .git/objects/pack -name "*.mtimes" >mtimes &&
sed -e 's/\.mtimes$/\.pack/g' mtimes >packs &&
test_file_not_empty packs &&
while read pack
do
test_path_is_file "$pack" || return 1
done <packs
}
test_expect_success 'gc --cruft generates a cruft pack' '
test_when_finished "rm -fr crufts" &&
git init crufts &&
(
cd crufts &&
prepare_cruft_history &&
git gc --cruft &&
assert_cruft_packs
)
'
test_expect_success 'gc.cruftPacks=true generates a cruft pack' '
test_when_finished "rm -fr crufts" &&
git init crufts &&
(
cd crufts &&
prepare_cruft_history &&
git -c gc.cruftPacks=true gc &&
assert_cruft_packs
)
'
run_and_wait_for_auto_gc () {
# We read stdout from gc for the side effect of waiting until the
# background gc process exits, closing its fd 9. Furthermore, the