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git/t/t3303-notes-subtrees.sh
Johan Herland 851c2b3791 Teach notes code to properly preserve non-notes in the notes tree
The note tree structure allows for non-note entries to coexist with note
entries in a notes tree. Although we certainly expect there to be very
few non-notes in a notes tree, we should still support them to a certain
degree.

This patch teaches the notes code to preserve non-notes when updating the
notes tree with write_notes_tree(). Non-notes are not affected by fanout
restructuring.

For non-notes to be handled correctly, we can no longer allow subtree
entries that do not match the fanout structure produced by the notes code
itself. This means that fanouts like 4/36, 6/34, 8/32, 4/4/32, etc. are
no longer recognized as note subtrees; only 2-based fanouts are allowed
(2/38, 2/2/36, 2/2/2/34, etc.). Since the notes code has never at any point
_produced_ non-2-based fanouts, it is highly unlikely that this change will
cause problems for anyone.

The patch also adds some tests verifying the correct handling of non-notes
in a notes tree.

Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-13 19:36:13 -08:00

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#!/bin/sh
test_description='Test commit notes organized in subtrees'
. ./test-lib.sh
number_of_commits=100
start_note_commit () {
test_tick &&
cat <<INPUT_END
commit refs/notes/commits
committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
data <<COMMIT
notes
COMMIT
from refs/notes/commits^0
deleteall
INPUT_END
}
verify_notes () {
git log | grep "^ " > output &&
i=$number_of_commits &&
while [ $i -gt 0 ]; do
echo " commit #$i" &&
echo " note for commit #$i" &&
i=$(($i-1));
done > expect &&
test_cmp expect output
}
test_expect_success "setup: create $number_of_commits commits" '
(
nr=0 &&
while [ $nr -lt $number_of_commits ]; do
nr=$(($nr+1)) &&
test_tick &&
cat <<INPUT_END
commit refs/heads/master
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
INPUT_END
done &&
test_tick &&
cat <<INPUT_END
commit refs/notes/commits
committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
data <<COMMIT
no notes
COMMIT
deleteall
INPUT_END
) |
git fast-import --quiet &&
git config core.notesRef refs/notes/commits
'
test_sha1_based () {
(
start_note_commit &&
nr=$number_of_commits &&
git rev-list refs/heads/master |
while read sha1; do
note_path=$(echo "$sha1" | sed "$1")
cat <<INPUT_END &&
M 100644 inline $note_path
data <<EOF
note for commit #$nr
EOF
INPUT_END
nr=$(($nr-1))
done
) |
git fast-import --quiet
}
test_expect_success 'test notes in 2/38-fanout' 'test_sha1_based "s|^..|&/|"'
test_expect_success 'verify notes in 2/38-fanout' 'verify_notes'
test_expect_success 'test notes in 2/2/36-fanout' 'test_sha1_based "s|^\(..\)\(..\)|\1/\2/|"'
test_expect_success 'verify notes in 2/2/36-fanout' 'verify_notes'
test_expect_success 'test notes in 2/2/2/34-fanout' 'test_sha1_based "s|^\(..\)\(..\)\(..\)|\1/\2/\3/|"'
test_expect_success 'verify notes in 2/2/2/34-fanout' 'verify_notes'
test_same_notes () {
(
start_note_commit &&
nr=$number_of_commits &&
git rev-list refs/heads/master |
while read sha1; do
first_note_path=$(echo "$sha1" | sed "$1")
second_note_path=$(echo "$sha1" | sed "$2")
cat <<INPUT_END &&
M 100644 inline $second_note_path
data <<EOF
note for commit #$nr
EOF
M 100644 inline $first_note_path
data <<EOF
note for commit #$nr
EOF
INPUT_END
nr=$(($nr-1))
done
) |
git fast-import --quiet
}
test_expect_success 'test same notes in no fanout and 2/38-fanout' 'test_same_notes "s|^..|&/|" ""'
test_expect_success 'verify same notes in no fanout and 2/38-fanout' 'verify_notes'
test_expect_success 'test same notes in no fanout and 2/2/36-fanout' 'test_same_notes "s|^\(..\)\(..\)|\1/\2/|" ""'
test_expect_success 'verify same notes in no fanout and 2/2/36-fanout' 'verify_notes'
test_expect_success 'test same notes in 2/38-fanout and 2/2/36-fanout' 'test_same_notes "s|^\(..\)\(..\)|\1/\2/|" "s|^..|&/|"'
test_expect_success 'verify same notes in 2/38-fanout and 2/2/36-fanout' 'verify_notes'
test_expect_success 'test same notes in 2/2/2/34-fanout and 2/2/36-fanout' 'test_same_notes "s|^\(..\)\(..\)|\1/\2/|" "s|^\(..\)\(..\)\(..\)|\1/\2/\3/|"'
test_expect_success 'verify same notes in 2/2/2/34-fanout and 2/2/36-fanout' 'verify_notes'
test_concatenated_notes () {
(
start_note_commit &&
nr=$number_of_commits &&
git rev-list refs/heads/master |
while read sha1; do
first_note_path=$(echo "$sha1" | sed "$1")
second_note_path=$(echo "$sha1" | sed "$2")
cat <<INPUT_END &&
M 100644 inline $second_note_path
data <<EOF
second note for commit #$nr
EOF
M 100644 inline $first_note_path
data <<EOF
first note for commit #$nr
EOF
INPUT_END
nr=$(($nr-1))
done
) |
git fast-import --quiet
}
verify_concatenated_notes () {
git log | grep "^ " > output &&
i=$number_of_commits &&
while [ $i -gt 0 ]; do
echo " commit #$i" &&
echo " first note for commit #$i" &&
echo " second note for commit #$i" &&
i=$(($i-1));
done > expect &&
test_cmp expect output
}
test_expect_success 'test notes in no fanout concatenated with 2/38-fanout' 'test_concatenated_notes "s|^..|&/|" ""'
test_expect_success 'verify notes in no fanout concatenated with 2/38-fanout' 'verify_concatenated_notes'
test_expect_success 'test notes in no fanout concatenated with 2/2/36-fanout' 'test_concatenated_notes "s|^\(..\)\(..\)|\1/\2/|" ""'
test_expect_success 'verify notes in no fanout concatenated with 2/2/36-fanout' 'verify_concatenated_notes'
test_expect_success 'test notes in 2/38-fanout concatenated with 2/2/36-fanout' 'test_concatenated_notes "s|^\(..\)\(..\)|\1/\2/|" "s|^..|&/|"'
test_expect_success 'verify notes in 2/38-fanout concatenated with 2/2/36-fanout' 'verify_concatenated_notes'
test_expect_success 'test notes in 2/2/36-fanout concatenated with 2/2/2/34-fanout' 'test_concatenated_notes "s|^\(..\)\(..\)\(..\)|\1/\2/\3/|" "s|^\(..\)\(..\)|\1/\2/|"'
test_expect_success 'verify notes in 2/2/36-fanout concatenated with 2/2/2/34-fanout' 'verify_concatenated_notes'
test_done