tvl-depot/third_party/git/t/t3305-notes-fanout.sh
Vincent Ambo f4609b896f merge(3p/git): Merge git subtree at v2.29.2
This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because
there is some breakage in the git build related to the netrc
credentials helper which someone has taken care of in nixpkgs.

The stable channel is not used for anything other than git, so this
should be fine.

Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb
2020-11-21 19:45:56 +01:00

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Executable file

#!/bin/sh
test_description='Test that adding/removing many notes triggers automatic fanout restructuring'
. ./test-lib.sh
path_has_fanout() {
path=$1 &&
fanout=$2 &&
after_last_slash=$(($(test_oid hexsz) - $fanout * 2)) &&
echo $path | grep -q "^\([0-9a-f]\{2\}/\)\{$fanout\}[0-9a-f]\{$after_last_slash\}$"
}
touched_one_note_with_fanout() {
notes_commit=$1 &&
modification=$2 && # 'A' for addition, 'D' for deletion
fanout=$3 &&
diff=$(git diff-tree --no-commit-id --name-status --root -r $notes_commit) &&
path=$(echo $diff | sed -e "s/^$modification[\t ]//") &&
path_has_fanout "$path" $fanout;
}
all_notes_have_fanout() {
notes_commit=$1 &&
fanout=$2 &&
git ls-tree -r --name-only $notes_commit 2>/dev/null |
while read path
do
path_has_fanout $path $fanout || return 1
done
}
test_expect_success 'tweak test environment' '
git checkout -b nondeterminism &&
test_commit A &&
git checkout --orphan with_notes;
'
test_expect_success 'creating many notes with git-notes' '
num_notes=300 &&
i=0 &&
while test $i -lt $num_notes
do
i=$(($i + 1)) &&
test_tick &&
echo "file for commit #$i" > file &&
git add file &&
git commit -q -m "commit #$i" &&
git notes add -m "note #$i" || return 1
done
'
test_expect_success 'many notes created correctly with git-notes' '
git log | grep "^ " > output &&
i=$num_notes &&
while test $i -gt 0
do
echo " commit #$i" &&
echo " note #$i" &&
i=$(($i - 1));
done > expect &&
test_cmp expect output
'
test_expect_success 'stable fanout 0 is followed by stable fanout 1' '
i=$num_notes &&
fanout=0 &&
while test $i -gt 0
do
i=$(($i - 1)) &&
if touched_one_note_with_fanout refs/notes/commits~$i A $fanout
then
continue
elif test $fanout -eq 0
then
fanout=1 &&
if all_notes_have_fanout refs/notes/commits~$i $fanout
then
echo "Fanout 0 -> 1 at refs/notes/commits~$i" &&
continue
fi
fi &&
echo "Failed fanout=$fanout check at refs/notes/commits~$i" &&
git ls-tree -r --name-only refs/notes/commits~$i &&
return 1
done &&
all_notes_have_fanout refs/notes/commits 1
'
test_expect_success 'deleting most notes with git-notes' '
remove_notes=285 &&
i=0 &&
git rev-list HEAD |
while test $i -lt $remove_notes && read sha1
do
i=$(($i + 1)) &&
test_tick &&
git notes remove "$sha1" 2>/dev/null || return 1
done
'
test_expect_success 'most notes deleted correctly with git-notes' '
git log HEAD~$remove_notes | grep "^ " > output &&
i=$(($num_notes - $remove_notes)) &&
while test $i -gt 0
do
echo " commit #$i" &&
echo " note #$i" &&
i=$(($i - 1));
done > expect &&
test_cmp expect output
'
test_expect_success 'stable fanout 1 is followed by stable fanout 0' '
i=$remove_notes &&
fanout=1 &&
while test $i -gt 0
do
i=$(($i - 1)) &&
if touched_one_note_with_fanout refs/notes/commits~$i D $fanout
then
continue
elif test $fanout -eq 1
then
fanout=0 &&
if all_notes_have_fanout refs/notes/commits~$i $fanout
then
echo "Fanout 1 -> 0 at refs/notes/commits~$i" &&
continue
fi
fi &&
echo "Failed fanout=$fanout check at refs/notes/commits~$i" &&
git ls-tree -r --name-only refs/notes/commits~$i &&
return 1
done &&
all_notes_have_fanout refs/notes/commits 0
'
test_done