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git-commit-vandalism/t/t3310-notes-merge-manual-resolve.sh
Johan Herland dabba590aa notes-merge: Don't remove .git/NOTES_MERGE_WORKTREE; it may be the user's cwd 
When a manual notes merge is committed or aborted, we need to remove the
temporary worktree at .git/NOTES_MERGE_WORKTREE. However, removing the
entire directory is not good if the user ran the 'git notes merge
--commit/--abort' from within that directory. On Windows, the directory
removal would simply fail, while on POSIX systems, users would suddenly
find themselves in an invalid current directory.

Therefore, instead of deleting the entire directory, we delete everything
_within_ the directory, and leave the (empty) directory in place.

This would cause a subsequent notes merge to abort, complaining about a
previous - unfinished - notes merge (due to the presence of
.git/NOTES_MERGE_WORKTREE), so we also need to adjust this check to only
trigger when .git/NOTES_MERGE_WORKTREE is non-empty.

Finally, adjust the t3310 manual notes merge testcases to correctly handle
the existence of an empty .git/NOTES_MERGE_WORKTREE directory.

Inspired-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-03-15 11:13:23 -07:00

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#!/bin/sh
#
# Copyright (c) 2010 Johan Herland
#
test_description='Test notes merging with manual conflict resolution'
. ./test-lib.sh
# Set up a notes merge scenario with different kinds of conflicts
test_expect_success 'setup commits' '
test_commit 1st &&
test_commit 2nd &&
test_commit 3rd &&
test_commit 4th &&
test_commit 5th
'
commit_sha1=$(git rev-parse 1st^{commit})
commit_sha2=$(git rev-parse 2nd^{commit})
commit_sha3=$(git rev-parse 3rd^{commit})
commit_sha4=$(git rev-parse 4th^{commit})
commit_sha5=$(git rev-parse 5th^{commit})
verify_notes () {
notes_ref="$1"
git -c core.notesRef="refs/notes/$notes_ref" notes |
sort >"output_notes_$notes_ref" &&
test_cmp "expect_notes_$notes_ref" "output_notes_$notes_ref" &&
git -c core.notesRef="refs/notes/$notes_ref" log --format="%H %s%n%N" \
>"output_log_$notes_ref" &&
test_cmp "expect_log_$notes_ref" "output_log_$notes_ref"
}
cat <<EOF | sort >expect_notes_x
6e8e3febca3c2bb896704335cc4d0c34cb2f8715 $commit_sha4
e5388c10860456ee60673025345fe2e153eb8cf8 $commit_sha3
ceefa674873670e7ecd131814d909723cce2b669 $commit_sha2
EOF
cat >expect_log_x <<EOF
$commit_sha5 5th
$commit_sha4 4th
x notes on 4th commit
$commit_sha3 3rd
x notes on 3rd commit
$commit_sha2 2nd
x notes on 2nd commit
$commit_sha1 1st
EOF
test_expect_success 'setup merge base (x)' '
git config core.notesRef refs/notes/x &&
git notes add -m "x notes on 2nd commit" 2nd &&
git notes add -m "x notes on 3rd commit" 3rd &&
git notes add -m "x notes on 4th commit" 4th &&
verify_notes x
'
cat <<EOF | sort >expect_notes_y
e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4
5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3
b0a6021ec006d07e80e9b20ec9b444cbd9d560d3 $commit_sha1
EOF
cat >expect_log_y <<EOF
$commit_sha5 5th
$commit_sha4 4th
y notes on 4th commit
$commit_sha3 3rd
y notes on 3rd commit
$commit_sha2 2nd
$commit_sha1 1st
y notes on 1st commit
EOF
test_expect_success 'setup local branch (y)' '
git update-ref refs/notes/y refs/notes/x &&
git config core.notesRef refs/notes/y &&
git notes add -f -m "y notes on 1st commit" 1st &&
git notes remove 2nd &&
git notes add -f -m "y notes on 3rd commit" 3rd &&
git notes add -f -m "y notes on 4th commit" 4th &&
verify_notes y
'
cat <<EOF | sort >expect_notes_z
cff59c793c20bb49a4e01bc06fb06bad642e0d54 $commit_sha4
283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
0a81da8956346e19bcb27a906f04af327e03e31b $commit_sha1
EOF
cat >expect_log_z <<EOF
$commit_sha5 5th
$commit_sha4 4th
z notes on 4th commit
$commit_sha3 3rd
$commit_sha2 2nd
z notes on 2nd commit
$commit_sha1 1st
z notes on 1st commit
EOF
test_expect_success 'setup remote branch (z)' '
git update-ref refs/notes/z refs/notes/x &&
git config core.notesRef refs/notes/z &&
git notes add -f -m "z notes on 1st commit" 1st &&
git notes add -f -m "z notes on 2nd commit" 2nd &&
git notes remove 3rd &&
git notes add -f -m "z notes on 4th commit" 4th &&
verify_notes z
'
# At this point, before merging z into y, we have the following status:
#
# commit | base/x | local/y | remote/z | diff from x to y/z
# -------|---------|---------|----------|---------------------------
# 1st | [none] | b0a6021 | 0a81da8 | added / added (diff)
# 2nd | ceefa67 | [none] | 283b482 | removed / changed
# 3rd | e5388c1 | 5772f42 | [none] | changed / removed
# 4th | 6e8e3fe | e2bfd06 | cff59c7 | changed / changed (diff)
# 5th | [none] | [none] | [none] | [none]
cat <<EOF | sort >expect_conflicts
$commit_sha1
$commit_sha2
$commit_sha3
$commit_sha4
EOF
cat >expect_conflict_$commit_sha1 <<EOF
<<<<<<< refs/notes/m
y notes on 1st commit
=======
z notes on 1st commit
>>>>>>> refs/notes/z
EOF
cat >expect_conflict_$commit_sha2 <<EOF
z notes on 2nd commit
EOF
cat >expect_conflict_$commit_sha3 <<EOF
y notes on 3rd commit
EOF
cat >expect_conflict_$commit_sha4 <<EOF
<<<<<<< refs/notes/m
y notes on 4th commit
=======
z notes on 4th commit
>>>>>>> refs/notes/z
EOF
cp expect_notes_y expect_notes_m
cp expect_log_y expect_log_m
git rev-parse refs/notes/y > pre_merge_y
git rev-parse refs/notes/z > pre_merge_z
test_expect_success 'merge z into m (== y) with default ("manual") resolver => Conflicting 3-way merge' '
git update-ref refs/notes/m refs/notes/y &&
git config core.notesRef refs/notes/m &&
test_must_fail git notes merge z >output &&
# Output should point to where to resolve conflicts
grep -q "\\.git/NOTES_MERGE_WORKTREE" output &&
# Inspect merge conflicts
ls .git/NOTES_MERGE_WORKTREE >output_conflicts &&
test_cmp expect_conflicts output_conflicts &&
( for f in $(cat expect_conflicts); do
test_cmp "expect_conflict_$f" ".git/NOTES_MERGE_WORKTREE/$f" ||
exit 1
done ) &&
# Verify that current notes tree (pre-merge) has not changed (m == y)
verify_notes y &&
verify_notes m &&
test "$(git rev-parse refs/notes/m)" = "$(cat pre_merge_y)"
'
cat <<EOF | sort >expect_notes_z
00494adecf2d9635a02fa431308d67993f853968 $commit_sha4
283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
0a81da8956346e19bcb27a906f04af327e03e31b $commit_sha1
EOF
cat >expect_log_z <<EOF
$commit_sha5 5th
$commit_sha4 4th
z notes on 4th commit
More z notes on 4th commit
$commit_sha3 3rd
$commit_sha2 2nd
z notes on 2nd commit
$commit_sha1 1st
z notes on 1st commit
EOF
test_expect_success 'change notes in z' '
git notes --ref z append -m "More z notes on 4th commit" 4th &&
verify_notes z
'
test_expect_success 'cannot do merge w/conflicts when previous merge is unfinished' '
test -d .git/NOTES_MERGE_WORKTREE &&
test_must_fail git notes merge z >output 2>&1 &&
# Output should indicate what is wrong
grep -q "\\.git/NOTES_MERGE_\\* exists" output
'
# Setup non-conflicting merge between x and new notes ref w
cat <<EOF | sort >expect_notes_w
ceefa674873670e7ecd131814d909723cce2b669 $commit_sha2
f75d1df88cbfe4258d49852f26cfc83f2ad4494b $commit_sha1
EOF
cat >expect_log_w <<EOF
$commit_sha5 5th
$commit_sha4 4th
$commit_sha3 3rd
$commit_sha2 2nd
x notes on 2nd commit
$commit_sha1 1st
w notes on 1st commit
EOF
test_expect_success 'setup unrelated notes ref (w)' '
git config core.notesRef refs/notes/w &&
git notes add -m "w notes on 1st commit" 1st &&
git notes add -m "x notes on 2nd commit" 2nd &&
verify_notes w
'
cat <<EOF | sort >expect_notes_w
6e8e3febca3c2bb896704335cc4d0c34cb2f8715 $commit_sha4
e5388c10860456ee60673025345fe2e153eb8cf8 $commit_sha3
ceefa674873670e7ecd131814d909723cce2b669 $commit_sha2
f75d1df88cbfe4258d49852f26cfc83f2ad4494b $commit_sha1
EOF
cat >expect_log_w <<EOF
$commit_sha5 5th
$commit_sha4 4th
x notes on 4th commit
$commit_sha3 3rd
x notes on 3rd commit
$commit_sha2 2nd
x notes on 2nd commit
$commit_sha1 1st
w notes on 1st commit
EOF
test_expect_success 'can do merge without conflicts even if previous merge is unfinished (x => w)' '
test -d .git/NOTES_MERGE_WORKTREE &&
git notes merge x &&
verify_notes w &&
# Verify that other notes refs has not changed (x and y)
verify_notes x &&
verify_notes y
'
cat <<EOF | sort >expect_notes_m
021faa20e931fb48986ffc6282b4bb05553ac946 $commit_sha4
5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3
283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
0a59e787e6d688aa6309e56e8c1b89431a0fc1c1 $commit_sha1
EOF
cat >expect_log_m <<EOF
$commit_sha5 5th
$commit_sha4 4th
y and z notes on 4th commit
$commit_sha3 3rd
y notes on 3rd commit
$commit_sha2 2nd
z notes on 2nd commit
$commit_sha1 1st
y and z notes on 1st commit
EOF
test_expect_success 'finalize conflicting merge (z => m)' '
# Resolve conflicts and finalize merge
cat >.git/NOTES_MERGE_WORKTREE/$commit_sha1 <<EOF &&
y and z notes on 1st commit
EOF
cat >.git/NOTES_MERGE_WORKTREE/$commit_sha4 <<EOF &&
y and z notes on 4th commit
EOF
git notes merge --commit &&
# No .git/NOTES_MERGE_* files left
test_might_fail ls .git/NOTES_MERGE_* >output 2>/dev/null &&
test_cmp /dev/null output &&
# Merge commit has pre-merge y and pre-merge z as parents
test "$(git rev-parse refs/notes/m^1)" = "$(cat pre_merge_y)" &&
test "$(git rev-parse refs/notes/m^2)" = "$(cat pre_merge_z)" &&
# Merge commit mentions the notes refs merged
git log -1 --format=%B refs/notes/m > merge_commit_msg &&
grep -q refs/notes/m merge_commit_msg &&
grep -q refs/notes/z merge_commit_msg &&
# Merge commit mentions conflicting notes
grep -q "Conflicts" merge_commit_msg &&
( for sha1 in $(cat expect_conflicts); do
grep -q "$sha1" merge_commit_msg ||
exit 1
done ) &&
# Verify contents of merge result
verify_notes m &&
# Verify that other notes refs has not changed (w, x, y and z)
verify_notes w &&
verify_notes x &&
verify_notes y &&
verify_notes z
'
cat >expect_conflict_$commit_sha4 <<EOF
<<<<<<< refs/notes/m
y notes on 4th commit
=======
z notes on 4th commit
More z notes on 4th commit
>>>>>>> refs/notes/z
EOF
cp expect_notes_y expect_notes_m
cp expect_log_y expect_log_m
git rev-parse refs/notes/y > pre_merge_y
git rev-parse refs/notes/z > pre_merge_z
test_expect_success 'redo merge of z into m (== y) with default ("manual") resolver => Conflicting 3-way merge' '
git update-ref refs/notes/m refs/notes/y &&
git config core.notesRef refs/notes/m &&
test_must_fail git notes merge z >output &&
# Output should point to where to resolve conflicts
grep -q "\\.git/NOTES_MERGE_WORKTREE" output &&
# Inspect merge conflicts
ls .git/NOTES_MERGE_WORKTREE >output_conflicts &&
test_cmp expect_conflicts output_conflicts &&
( for f in $(cat expect_conflicts); do
test_cmp "expect_conflict_$f" ".git/NOTES_MERGE_WORKTREE/$f" ||
exit 1
done ) &&
# Verify that current notes tree (pre-merge) has not changed (m == y)
verify_notes y &&
verify_notes m &&
test "$(git rev-parse refs/notes/m)" = "$(cat pre_merge_y)"
'
test_expect_success 'abort notes merge' '
git notes merge --abort &&
# No .git/NOTES_MERGE_* files left
test_might_fail ls .git/NOTES_MERGE_* >output 2>/dev/null &&
test_cmp /dev/null output &&
# m has not moved (still == y)
test "$(git rev-parse refs/notes/m)" = "$(cat pre_merge_y)" &&
# Verify that other notes refs has not changed (w, x, y and z)
verify_notes w &&
verify_notes x &&
verify_notes y &&
verify_notes z
'
git rev-parse refs/notes/y > pre_merge_y
git rev-parse refs/notes/z > pre_merge_z
test_expect_success 'redo merge of z into m (== y) with default ("manual") resolver => Conflicting 3-way merge' '
test_must_fail git notes merge z >output &&
# Output should point to where to resolve conflicts
grep -q "\\.git/NOTES_MERGE_WORKTREE" output &&
# Inspect merge conflicts
ls .git/NOTES_MERGE_WORKTREE >output_conflicts &&
test_cmp expect_conflicts output_conflicts &&
( for f in $(cat expect_conflicts); do
test_cmp "expect_conflict_$f" ".git/NOTES_MERGE_WORKTREE/$f" ||
exit 1
done ) &&
# Verify that current notes tree (pre-merge) has not changed (m == y)
verify_notes y &&
verify_notes m &&
test "$(git rev-parse refs/notes/m)" = "$(cat pre_merge_y)"
'
cat <<EOF | sort >expect_notes_m
304dfb4325cf243025b9957486eb605a9b51c199 $commit_sha5
283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
0a59e787e6d688aa6309e56e8c1b89431a0fc1c1 $commit_sha1
EOF
cat >expect_log_m <<EOF
$commit_sha5 5th
new note on 5th commit
$commit_sha4 4th
$commit_sha3 3rd
$commit_sha2 2nd
z notes on 2nd commit
$commit_sha1 1st
y and z notes on 1st commit
EOF
test_expect_success 'add + remove notes in finalized merge (z => m)' '
# Resolve one conflict
cat >.git/NOTES_MERGE_WORKTREE/$commit_sha1 <<EOF &&
y and z notes on 1st commit
EOF
# Remove another conflict
rm .git/NOTES_MERGE_WORKTREE/$commit_sha4 &&
# Remove a D/F conflict
rm .git/NOTES_MERGE_WORKTREE/$commit_sha3 &&
# Add a new note
echo "new note on 5th commit" > .git/NOTES_MERGE_WORKTREE/$commit_sha5 &&
# Finalize merge
git notes merge --commit &&
# No .git/NOTES_MERGE_* files left
test_might_fail ls .git/NOTES_MERGE_* >output 2>/dev/null &&
test_cmp /dev/null output &&
# Merge commit has pre-merge y and pre-merge z as parents
test "$(git rev-parse refs/notes/m^1)" = "$(cat pre_merge_y)" &&
test "$(git rev-parse refs/notes/m^2)" = "$(cat pre_merge_z)" &&
# Merge commit mentions the notes refs merged
git log -1 --format=%B refs/notes/m > merge_commit_msg &&
grep -q refs/notes/m merge_commit_msg &&
grep -q refs/notes/z merge_commit_msg &&
# Merge commit mentions conflicting notes
grep -q "Conflicts" merge_commit_msg &&
( for sha1 in $(cat expect_conflicts); do
grep -q "$sha1" merge_commit_msg ||
exit 1
done ) &&
# Verify contents of merge result
verify_notes m &&
# Verify that other notes refs has not changed (w, x, y and z)
verify_notes w &&
verify_notes x &&
verify_notes y &&
verify_notes z
'
cp expect_notes_y expect_notes_m
cp expect_log_y expect_log_m
test_expect_success 'redo merge of z into m (== y) with default ("manual") resolver => Conflicting 3-way merge' '
git update-ref refs/notes/m refs/notes/y &&
test_must_fail git notes merge z >output &&
# Output should point to where to resolve conflicts
grep -q "\\.git/NOTES_MERGE_WORKTREE" output &&
# Inspect merge conflicts
ls .git/NOTES_MERGE_WORKTREE >output_conflicts &&
test_cmp expect_conflicts output_conflicts &&
( for f in $(cat expect_conflicts); do
test_cmp "expect_conflict_$f" ".git/NOTES_MERGE_WORKTREE/$f" ||
exit 1
done ) &&
# Verify that current notes tree (pre-merge) has not changed (m == y)
verify_notes y &&
verify_notes m &&
test "$(git rev-parse refs/notes/m)" = "$(cat pre_merge_y)"
'
cp expect_notes_w expect_notes_m
cp expect_log_w expect_log_m
test_expect_success 'reset notes ref m to somewhere else (w)' '
git update-ref refs/notes/m refs/notes/w &&
verify_notes m &&
test "$(git rev-parse refs/notes/m)" = "$(git rev-parse refs/notes/w)"
'
test_expect_success 'fail to finalize conflicting merge if underlying ref has moved in the meantime (m != NOTES_MERGE_PARTIAL^1)' '
# Resolve conflicts
cat >.git/NOTES_MERGE_WORKTREE/$commit_sha1 <<EOF &&
y and z notes on 1st commit
EOF
cat >.git/NOTES_MERGE_WORKTREE/$commit_sha4 <<EOF &&
y and z notes on 4th commit
EOF
# Fail to finalize merge
test_must_fail git notes merge --commit >output 2>&1 &&
# .git/NOTES_MERGE_* must remain
test -f .git/NOTES_MERGE_PARTIAL &&
test -f .git/NOTES_MERGE_REF &&
test -f .git/NOTES_MERGE_WORKTREE/$commit_sha1 &&
test -f .git/NOTES_MERGE_WORKTREE/$commit_sha2 &&
test -f .git/NOTES_MERGE_WORKTREE/$commit_sha3 &&
test -f .git/NOTES_MERGE_WORKTREE/$commit_sha4 &&
# Refs are unchanged
test "$(git rev-parse refs/notes/m)" = "$(git rev-parse refs/notes/w)" &&
test "$(git rev-parse refs/notes/y)" = "$(git rev-parse NOTES_MERGE_PARTIAL^1)" &&
test "$(git rev-parse refs/notes/m)" != "$(git rev-parse NOTES_MERGE_PARTIAL^1)" &&
# Mention refs/notes/m, and its current and expected value in output
grep -q "refs/notes/m" output &&
grep -q "$(git rev-parse refs/notes/m)" output &&
grep -q "$(git rev-parse NOTES_MERGE_PARTIAL^1)" output &&
# Verify that other notes refs has not changed (w, x, y and z)
verify_notes w &&
verify_notes x &&
verify_notes y &&
verify_notes z
'
test_expect_success 'resolve situation by aborting the notes merge' '
git notes merge --abort &&
# No .git/NOTES_MERGE_* files left
test_might_fail ls .git/NOTES_MERGE_* >output 2>/dev/null &&
test_cmp /dev/null output &&
# m has not moved (still == w)
test "$(git rev-parse refs/notes/m)" = "$(git rev-parse refs/notes/w)" &&
# Verify that other notes refs has not changed (w, x, y and z)
verify_notes w &&
verify_notes x &&
verify_notes y &&
verify_notes z
'
cat >expect_notes <<EOF
foo
bar
EOF
test_expect_success 'switch cwd before committing notes merge' '
git notes add -m foo HEAD &&
git notes --ref=other add -m bar HEAD &&
test_must_fail git notes merge refs/notes/other &&
(
cd .git/NOTES_MERGE_WORKTREE &&
echo "foo" > $(git rev-parse HEAD) &&
echo "bar" >> $(git rev-parse HEAD) &&
git notes merge --commit
) &&
git notes show HEAD > actual_notes &&
test_cmp expect_notes actual_notes
'
test_done
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