#!/bin/sh # # Copyright (c) 2010 Johan Herland # test_description='Test notes merging at various fanout levels' . ./test-lib.sh verify_notes () { notes_ref="$1" commit="$2" if test -f "expect_notes_$notes_ref" then git -c core.notesRef="refs/notes/$notes_ref" notes | sort >"output_notes_$notes_ref" && test_cmp "expect_notes_$notes_ref" "output_notes_$notes_ref" || return 1 fi && git -c core.notesRef="refs/notes/$notes_ref" log --format="%H %s%n%N" \ "$commit" >"output_log_$notes_ref" && test_cmp "expect_log_$notes_ref" "output_log_$notes_ref" } verify_fanout () { notes_ref="$1" # Expect entire notes tree to have a fanout == 1 git rev-parse --quiet --verify "refs/notes/$notes_ref" >/dev/null && git ls-tree -r --name-only "refs/notes/$notes_ref" | while read path do case "$path" in ??/??????????????????????????????????????) : true ;; *) echo "Invalid path \"$path\"" && return 1 ;; esac done } verify_no_fanout () { notes_ref="$1" # Expect entire notes tree to have a fanout == 0 git rev-parse --quiet --verify "refs/notes/$notes_ref" >/dev/null && git ls-tree -r --name-only "refs/notes/$notes_ref" | while read path do case "$path" in ????????????????????????????????????????) : true ;; *) echo "Invalid path \"$path\"" && return 1 ;; esac done } # Set up a notes merge scenario with different kinds of conflicts test_expect_success 'setup a few initial commits with notes (notes ref: x)' ' git config core.notesRef refs/notes/x && for i in 1 2 3 4 5 do test_commit "commit$i" >/dev/null && git notes add -m "notes for commit$i" || return 1 done ' commit_sha1=$(git rev-parse commit1^{commit}) commit_sha2=$(git rev-parse commit2^{commit}) commit_sha3=$(git rev-parse commit3^{commit}) commit_sha4=$(git rev-parse commit4^{commit}) commit_sha5=$(git rev-parse commit5^{commit}) cat <<EOF | sort >expect_notes_x aed91155c7a72c2188e781fdf40e0f3761b299db $commit_sha5 99fab268f9d7ee7b011e091a436c78def8eeee69 $commit_sha4 953c20ae26c7aa0b428c20693fe38bc687f9d1a9 $commit_sha3 6358796131b8916eaa2dde6902642942a1cb37e1 $commit_sha2 b02d459c32f0e68f2fe0981033bb34f38776ba47 $commit_sha1 EOF cat >expect_log_x <<EOF $commit_sha5 commit5 notes for commit5 $commit_sha4 commit4 notes for commit4 $commit_sha3 commit3 notes for commit3 $commit_sha2 commit2 notes for commit2 $commit_sha1 commit1 notes for commit1 EOF test_expect_success 'sanity check (x)' ' verify_notes x commit5 && verify_no_fanout x ' num=300 cp expect_log_x expect_log_y test_expect_success 'Add a few hundred commits w/notes to trigger fanout (x -> y)' ' git update-ref refs/notes/y refs/notes/x && git config core.notesRef refs/notes/y && i=5 && while test $i -lt $num do i=$(($i + 1)) && test_commit "commit$i" >/dev/null && git notes add -m "notes for commit$i" || return 1 done && test "$(git rev-parse refs/notes/y)" != "$(git rev-parse refs/notes/x)" && # Expected number of commits and notes test $(git rev-list HEAD | wc -l) = $num && test $(git notes list | wc -l) = $num && # 5 first notes unchanged verify_notes y commit5 ' test_expect_success 'notes tree has fanout (y)' 'verify_fanout y' test_expect_success 'No-op merge (already included) (x => y)' ' git update-ref refs/notes/m refs/notes/y && git config core.notesRef refs/notes/m && git notes merge x && test "$(git rev-parse refs/notes/m)" = "$(git rev-parse refs/notes/y)" ' test_expect_success 'Fast-forward merge (y => x)' ' git update-ref refs/notes/m refs/notes/x && git notes merge y && test "$(git rev-parse refs/notes/m)" = "$(git rev-parse refs/notes/y)" ' cat <<EOF | sort >expect_notes_z 9f506ee70e20379d7f78204c77b334f43d77410d $commit_sha3 23a47d6ea7d589895faf800752054818e1e7627b $commit_sha2 b02d459c32f0e68f2fe0981033bb34f38776ba47 $commit_sha1 EOF cat >expect_log_z <<EOF $commit_sha5 commit5 $commit_sha4 commit4 $commit_sha3 commit3 notes for commit3 appended notes for commit3 $commit_sha2 commit2 new notes for commit2 $commit_sha1 commit1 notes for commit1 EOF test_expect_success 'change some of the initial 5 notes (x -> z)' ' git update-ref refs/notes/z refs/notes/x && git config core.notesRef refs/notes/z && git notes add -f -m "new notes for commit2" commit2 && git notes append -m "appended notes for commit3" commit3 && git notes remove commit4 && git notes remove commit5 && verify_notes z commit5 ' test_expect_success 'notes tree has no fanout (z)' 'verify_no_fanout z' cp expect_log_z expect_log_m test_expect_success 'successful merge without conflicts (y => z)' ' git update-ref refs/notes/m refs/notes/z && git config core.notesRef refs/notes/m && git notes merge y && verify_notes m commit5 && # x/y/z unchanged verify_notes x commit5 && verify_notes y commit5 && verify_notes z commit5 ' test_expect_success 'notes tree still has fanout after merge (m)' 'verify_fanout m' cat >expect_log_w <<EOF $commit_sha5 commit5 $commit_sha4 commit4 other notes for commit4 $commit_sha3 commit3 other notes for commit3 $commit_sha2 commit2 notes for commit2 $commit_sha1 commit1 other notes for commit1 EOF test_expect_success 'introduce conflicting changes (y -> w)' ' git update-ref refs/notes/w refs/notes/y && git config core.notesRef refs/notes/w && git notes add -f -m "other notes for commit1" commit1 && git notes add -f -m "other notes for commit3" commit3 && git notes add -f -m "other notes for commit4" commit4 && git notes remove commit5 && verify_notes w commit5 ' cat >expect_log_m <<EOF $commit_sha5 commit5 $commit_sha4 commit4 other notes for commit4 $commit_sha3 commit3 other notes for commit3 $commit_sha2 commit2 new notes for commit2 $commit_sha1 commit1 other notes for commit1 EOF test_expect_success 'successful merge using "ours" strategy (z => w)' ' git update-ref refs/notes/m refs/notes/w && git config core.notesRef refs/notes/m && git notes merge -s ours z && verify_notes m commit5 && # w/x/y/z unchanged verify_notes w commit5 && verify_notes x commit5 && verify_notes y commit5 && verify_notes z commit5 ' test_expect_success 'notes tree still has fanout after merge (m)' 'verify_fanout m' cat >expect_log_m <<EOF $commit_sha5 commit5 $commit_sha4 commit4 $commit_sha3 commit3 notes for commit3 appended notes for commit3 $commit_sha2 commit2 new notes for commit2 $commit_sha1 commit1 other notes for commit1 EOF test_expect_success 'successful merge using "theirs" strategy (z => w)' ' git update-ref refs/notes/m refs/notes/w && git notes merge -s theirs z && verify_notes m commit5 && # w/x/y/z unchanged verify_notes w commit5 && verify_notes x commit5 && verify_notes y commit5 && verify_notes z commit5 ' test_expect_success 'notes tree still has fanout after merge (m)' 'verify_fanout m' cat >expect_log_m <<EOF $commit_sha5 commit5 $commit_sha4 commit4 other notes for commit4 $commit_sha3 commit3 other notes for commit3 notes for commit3 appended notes for commit3 $commit_sha2 commit2 new notes for commit2 $commit_sha1 commit1 other notes for commit1 EOF test_expect_success 'successful merge using "union" strategy (z => w)' ' git update-ref refs/notes/m refs/notes/w && git notes merge -s union z && verify_notes m commit5 && # w/x/y/z unchanged verify_notes w commit5 && verify_notes x commit5 && verify_notes y commit5 && verify_notes z commit5 ' test_expect_success 'notes tree still has fanout after merge (m)' 'verify_fanout m' cat >expect_log_m <<EOF $commit_sha5 commit5 $commit_sha4 commit4 other notes for commit4 $commit_sha3 commit3 appended notes for commit3 notes for commit3 other notes for commit3 $commit_sha2 commit2 new notes for commit2 $commit_sha1 commit1 other notes for commit1 EOF test_expect_success 'successful merge using "cat_sort_uniq" strategy (z => w)' ' git update-ref refs/notes/m refs/notes/w && git notes merge -s cat_sort_uniq z && verify_notes m commit5 && # w/x/y/z unchanged verify_notes w commit5 && verify_notes x commit5 && verify_notes y commit5 && verify_notes z commit5 ' test_expect_success 'notes tree still has fanout after merge (m)' 'verify_fanout m' # We're merging z into w. Here are the conflicts we expect: # # commit | x -> w | x -> z | conflict? # -------|-----------|-----------|---------- # 1 | changed | unchanged | no, use w # 2 | unchanged | changed | no, use z # 3 | changed | changed | yes (w, then z in conflict markers) # 4 | changed | deleted | yes (w) # 5 | deleted | deleted | no, deleted test_expect_success 'fails to merge using "manual" strategy (z => w)' ' git update-ref refs/notes/m refs/notes/w && test_must_fail git notes merge z ' test_expect_success 'notes tree still has fanout after merge (m)' 'verify_fanout m' cat <<EOF | sort >expect_conflicts $commit_sha3 $commit_sha4 EOF cat >expect_conflict_$commit_sha3 <<EOF <<<<<<< refs/notes/m other notes for commit3 ======= notes for commit3 appended notes for commit3 >>>>>>> refs/notes/z EOF cat >expect_conflict_$commit_sha4 <<EOF other notes for commit4 EOF test_expect_success 'verify conflict entries (with no fanout)' ' 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/$f" || exit 1 done ) && # Verify that current notes tree (pre-merge) has not changed (m == w) test "$(git rev-parse refs/notes/m)" = "$(git rev-parse refs/notes/w)" ' cat >expect_log_m <<EOF $commit_sha5 commit5 $commit_sha4 commit4 other notes for commit4 $commit_sha3 commit3 other notes for commit3 appended notes for commit3 $commit_sha2 commit2 new notes for commit2 $commit_sha1 commit1 other notes for commit1 EOF test_expect_success 'resolve and finalize merge (z => w)' ' cat >.git/NOTES_MERGE_WORKTREE/$commit_sha3 <<EOF && other notes for commit3 appended notes for commit3 EOF git notes merge --commit && verify_notes m commit5 && # w/x/y/z unchanged verify_notes w commit5 && verify_notes x commit5 && verify_notes y commit5 && verify_notes z commit5 ' test_expect_success 'notes tree still has fanout after merge (m)' 'verify_fanout m' test_done