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#!/bin/sh
#
# Copyright (c) 2007 Johannes E. Schindelin
#

test_description='Test commit notes index (expensive!)'

. ./test-lib.sh

test_set_prereq NOT_EXPENSIVE
test -n "$GIT_NOTES_TIMING_TESTS" && test_set_prereq EXPENSIVE
test -x /usr/bin/time && test_set_prereq USR_BIN_TIME

create_repo () {
number_of_commits=$1
nr=0
test -d .git || {
git init &&
(
while [ $nr -lt $number_of_commits ]; do
nr=$(($nr+1))
mark=$(($nr+$nr))
notemark=$(($mark+1))
test_tick &&
cat <<INPUT_END &&
commit refs/heads/master
mark :$mark
committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
data <<COMMIT
commit #$nr
COMMIT

M 644 inline file
data <<EOF
file in commit #$nr
EOF

blob
mark :$notemark
data <<EOF
note for commit #$nr
EOF

INPUT_END

echo "N :$notemark :$mark" >> note_commit
done &&
test_tick &&
cat <<INPUT_END &&
commit refs/notes/commits
committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
data <<COMMIT
notes
COMMIT

INPUT_END

cat note_commit
) |
git fast-import --quiet &&
git config core.notesRef refs/notes/commits
}
}

test_notes () {
count=$1 &&
git config core.notesRef refs/notes/commits &&
git log | grep "^ " > output &&
i=$count &&
while [ $i -gt 0 ]; do
echo " commit #$i" &&
echo " note for commit #$i" &&
i=$(($i-1));
done > expect &&
test_cmp expect output
}

cat > time_notes << \EOF
mode=$1
i=1
while [ $i -lt $2 ]; do
case $1 in
no-notes)
GIT_NOTES_REF=non-existing; export GIT_NOTES_REF
;;
notes)
unset GIT_NOTES_REF
;;
esac
git log >/dev/null
i=$(($i+1))
done
EOF

time_notes () {
for mode in no-notes notes
do
echo $mode
/usr/bin/time "$SHELL_PATH" ../time_notes $mode $1
done
}

do_tests () {
pr=$1
count=$2

test_expect_success $pr 'setup / mkdir' '
mkdir $count &&
cd $count
'

test_expect_success $pr "setup $count" "create_repo $count"

test_expect_success $pr 'notes work' "test_notes $count"

test_expect_success USR_BIN_TIME,$pr 'notes timing with /usr/bin/time' "time_notes 100"

test_expect_success $pr 'teardown / cd ..' 'cd ..'
}

do_tests NOT_EXPENSIVE 10
for count in 100 1000 10000; do
do_tests EXPENSIVE $count
done

test_done
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