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

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

source ./test-lib.sh

proc create_repo {
	setglobal number_of_commits = $1
	setglobal nr = '0'
	test -d .git || do {
	git init &&
	shell {
		while test $nr -lt $number_of_commits
		{
			setglobal nr = $shExpr('$nr+1')
			setglobal mark = $shExpr('$nr+$nr')
			setglobal notemark = $shExpr('$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
		} &&
		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
	}
}

proc test_notes {
	setglobal count = $1 &&
	git config core.notesRef refs/notes/commits &&
	git log | grep "^    " >output &&
	setglobal i = $count &&
	while test $i -gt 0
	{
		echo "    commit #$i" &&
		echo "    note for commit #$i" &&
		setglobal i = $shExpr('$i-1')
	} >expect &&
	test_cmp expect output
}

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

proc time_notes {
	for mode in [no-notes notes]
	{
		echo $mode
		/usr/bin/time ../time_notes $mode $1
	}
}

proc do_tests {
	setglobal count = $1, pr = $(2-)

	test_expect_success $pr "setup $count" '
		mkdir "$count" &&
		(
			cd "$count" &&
			create_repo "$count"
		)
	'

	test_expect_success $pr 'notes work' '
		(
			cd "$count" &&
			test_notes "$count"
		)
	'

	test_expect_success "USR_BIN_TIME$(pr:+,$pr)" 'notes timing with /usr/bin/time' '
		(
			cd "$count" &&
			time_notes 100
		)
	'
}

do_tests 10
for count in [100 1000 10000]
{
	do_tests $count EXPENSIVE
}

test_done