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git/t/t6500-gc.sh
Derrick Stolee ecc0869080 commit-graph: use start_delayed_progress()
When writing a commit-graph, we show progress along several commit
walks. When we use start_delayed_progress(), the progress line will
only appear if that step takes a decent amount of time.

However, one place was missed: computing generation numbers. This is
normally a very fast operation as all commits have been parsed in a
previous step. But, this is showing up for all users no matter how few
commits are being added.

The tests that check for the progress output have already been updated
to use GIT_PROGRESS_DELAY=0 to force the expected output.

Helped-by: Jeff King <peff@peff.net>
Reported-by: ryenus <ryenus@gmail.com>
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-27 10:57:10 +09:00

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#!/bin/sh
test_description='basic git gc tests
'
. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-terminal.sh
test_expect_success 'setup' '
# do not let the amount of physical memory affects gc
# behavior, make sure we always pack everything to one pack by
# default
git config gc.bigPackThreshold 2g
'
test_expect_success 'gc empty repository' '
git gc
'
test_expect_success 'gc does not leave behind pid file' '
git gc &&
test_path_is_missing .git/gc.pid
'
test_expect_success 'gc --gobbledegook' '
test_expect_code 129 git gc --nonsense 2>err &&
test_i18ngrep "[Uu]sage: git gc" err
'
test_expect_success 'gc -h with invalid configuration' '
mkdir broken &&
(
cd broken &&
git init &&
echo "[gc] pruneexpire = CORRUPT" >>.git/config &&
test_expect_code 129 git gc -h >usage 2>&1
) &&
test_i18ngrep "[Uu]sage" broken/usage
'
test_expect_success 'gc is not aborted due to a stale symref' '
git init remote &&
(
cd remote &&
test_commit initial &&
git clone . ../client &&
git branch -m develop &&
cd ../client &&
git fetch --prune &&
git gc
)
'
test_expect_success 'gc --keep-largest-pack' '
test_create_repo keep-pack &&
(
cd keep-pack &&
test_commit one &&
test_commit two &&
test_commit three &&
git gc &&
( cd .git/objects/pack && ls *.pack ) >pack-list &&
test_line_count = 1 pack-list &&
BASE_PACK=.git/objects/pack/pack-*.pack &&
test_commit four &&
git repack -d &&
test_commit five &&
git repack -d &&
( cd .git/objects/pack && ls *.pack ) >pack-list &&
test_line_count = 3 pack-list &&
git gc --keep-largest-pack &&
( cd .git/objects/pack && ls *.pack ) >pack-list &&
test_line_count = 2 pack-list &&
awk "/^P /{print \$2}" <.git/objects/info/packs >pack-info &&
test_line_count = 2 pack-info &&
test_path_is_file $BASE_PACK &&
git fsck
)
'
test_expect_success 'auto gc with too many loose objects does not attempt to create bitmaps' '
test_config gc.auto 3 &&
test_config gc.autodetach false &&
test_config pack.writebitmaps true &&
# We need to create two object whose sha1s start with 17
# since this is what git gc counts. As it happens, these
# two blobs will do so.
test_commit 263 &&
test_commit 410 &&
# Our first gc will create a pack; our second will create a second pack
git gc --auto &&
ls .git/objects/pack | sort >existing_packs &&
test_commit 523 &&
test_commit 790 &&
git gc --auto 2>err &&
test_i18ngrep ! "^warning:" err &&
ls .git/objects/pack/ | sort >post_packs &&
comm -1 -3 existing_packs post_packs >new &&
comm -2 -3 existing_packs post_packs >del &&
test_line_count = 0 del && # No packs are deleted
test_line_count = 2 new # There is one new pack and its .idx
'
test_expect_success 'gc --no-quiet' '
GIT_PROGRESS_DELAY=0 git -c gc.writeCommitGraph=true gc --no-quiet >stdout 2>stderr &&
test_must_be_empty stdout &&
test_i18ngrep "Computing commit graph generation numbers" stderr
'
test_expect_success TTY 'with TTY: gc --no-quiet' '
test_terminal env GIT_PROGRESS_DELAY=0 \
git -c gc.writeCommitGraph=true gc --no-quiet >stdout 2>stderr &&
test_must_be_empty stdout &&
test_i18ngrep "Enumerating objects" stderr &&
test_i18ngrep "Computing commit graph generation numbers" stderr
'
test_expect_success 'gc --quiet' '
git -c gc.writeCommitGraph=true gc --quiet >stdout 2>stderr &&
test_must_be_empty stdout &&
test_must_be_empty stderr
'
test_expect_success 'gc.reflogExpire{Unreachable,}=never skips "expire" via "gc"' '
test_config gc.reflogExpire never &&
test_config gc.reflogExpireUnreachable never &&
GIT_TRACE=$(pwd)/trace.out git gc &&
# Check that git-pack-refs is run as a sanity check (done via
# gc_before_repack()) but that git-expire is not.
grep -E "^trace: (built-in|exec|run_command): git pack-refs --" trace.out &&
! grep -E "^trace: (built-in|exec|run_command): git reflog expire --" trace.out
'
test_expect_success 'one of gc.reflogExpire{Unreachable,}=never does not skip "expire" via "gc"' '
>trace.out &&
test_config gc.reflogExpire never &&
GIT_TRACE=$(pwd)/trace.out git gc &&
grep -E "^trace: (built-in|exec|run_command): git reflog expire --" trace.out
'
run_and_wait_for_auto_gc () {
# We read stdout from gc for the side effect of waiting until the
# background gc process exits, closing its fd 9. Furthermore, the
# variable assignment from a command substitution preserves the
# exit status of the main gc process.
# Note: this fd trickery doesn't work on Windows, but there is no
# need to, because on Win the auto gc always runs in the foreground.
doesnt_matter=$(git gc --auto 9>&1)
}
test_expect_success 'background auto gc does not run if gc.log is present and recent but does if it is old' '
test_commit foo &&
test_commit bar &&
git repack &&
test_config gc.autopacklimit 1 &&
test_config gc.autodetach true &&
echo fleem >.git/gc.log &&
git gc --auto 2>err &&
test_i18ngrep "^warning:" err &&
test_config gc.logexpiry 5.days &&
test-tool chmtime =-345600 .git/gc.log &&
git gc --auto &&
test_config gc.logexpiry 2.days &&
run_and_wait_for_auto_gc &&
ls .git/objects/pack/pack-*.pack >packs &&
test_line_count = 1 packs
'
test_expect_success 'background auto gc respects lock for all operations' '
# make sure we run a background auto-gc
test_commit make-pack &&
git repack &&
test_config gc.autopacklimit 1 &&
test_config gc.autodetach true &&
# create a ref whose loose presence we can use to detect a pack-refs run
git update-ref refs/heads/should-be-loose HEAD &&
test_path_is_file .git/refs/heads/should-be-loose &&
# now fake a concurrent gc that holds the lock; we can use our
# shell pid so that it looks valid.
hostname=$(hostname || echo unknown) &&
shell_pid=$$ &&
if test_have_prereq MINGW && test -f /proc/$shell_pid/winpid
then
# In Git for Windows, Bash (actually, the MSYS2 runtime) has a
# different idea of PIDs than git.exe (actually Windows). Use
# the Windows PID in this case.
shell_pid=$(cat /proc/$shell_pid/winpid)
fi &&
printf "%d %s" "$shell_pid" "$hostname" >.git/gc.pid &&
# our gc should exit zero without doing anything
run_and_wait_for_auto_gc &&
test_path_is_file .git/refs/heads/should-be-loose
'
# DO NOT leave a detached auto gc process running near the end of the
# test script: it can run long enough in the background to racily
# interfere with the cleanup in 'test_done'.
test_done