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Add an expensive test for git-notes
git-notes have the potential of being pretty expensive, so test with a lot of commits. A lot. So to make things cheaper, you have to opt-in explicitely, by setting the environment variable GIT_NOTES_TIMING_TESTS. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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t/t3302-notes-index-expensive.sh
Executable file
98
t/t3302-notes-index-expensive.sh
Executable file
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#!/bin/sh
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#
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# Copyright (c) 2007 Johannes E. Schindelin
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#
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test_description='Test commit notes index (expensive!)'
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. ./test-lib.sh
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test -z "$GIT_NOTES_TIMING_TESTS" && {
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say Skipping timing tests
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test_done
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exit
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}
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create_repo () {
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number_of_commits=$1
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nr=0
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parent=
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test -d .git || {
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git init &&
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tree=$(git write-tree) &&
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while [ $nr -lt $number_of_commits ]; do
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test_tick &&
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commit=$(echo $nr | git commit-tree $tree $parent) ||
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return
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parent="-p $commit"
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nr=$(($nr+1))
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done &&
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git update-ref refs/heads/master $commit &&
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{
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export GIT_INDEX_FILE=.git/temp;
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git rev-list HEAD | cat -n | sed "s/^[ ][ ]*/ /g" |
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while read nr sha1; do
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blob=$(echo note $nr | git hash-object -w --stdin) &&
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echo $sha1 | sed "s/^/0644 $blob 0 /"
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done | git update-index --index-info &&
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tree=$(git write-tree) &&
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test_tick &&
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commit=$(echo notes | git commit-tree $tree) &&
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git update-ref refs/notes/commits $commit
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} &&
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git config core.notesRef refs/notes/commits
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}
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}
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test_notes () {
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count=$1 &&
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git config core.notesRef refs/notes/commits &&
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git log | grep "^ " > output &&
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i=1 &&
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while [ $i -le $count ]; do
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echo " $(($count-$i))" &&
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echo " note $i" &&
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i=$(($i+1));
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done > expect &&
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git diff expect output
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}
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cat > time_notes << \EOF
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mode=$1
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i=1
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while [ $i -lt $2 ]; do
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case $1 in
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no-notes)
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export GIT_NOTES_REF=non-existing
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;;
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notes)
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unset GIT_NOTES_REF
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;;
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esac
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git log >/dev/null
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i=$(($i+1))
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done
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EOF
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time_notes () {
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for mode in no-notes notes
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do
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echo $mode
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/usr/bin/time sh ../time_notes $mode $1
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done
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}
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for count in 10 100 1000 10000; do
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mkdir $count
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(cd $count;
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test_expect_success "setup $count" "create_repo $count"
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test_expect_success 'notes work' "test_notes $count"
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test_expect_success 'notes timing' "time_notes 100"
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)
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done
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test_done
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