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2085b16aef
This continuation of the 'git notes merge' implementation teaches notes-merge to properly do real merges between notes trees: Two diffs are performed, one from $base to $remote, and another from $base to $local. The paths in each diff are normalized to SHA1 object names. The two diffs are then consolidated into a single list of change pairs to be evaluated. Each change pair consist of: - The annotated object's SHA1 - The $base SHA1 (i.e. the common ancestor notes for this object) - The $local SHA1 (i.e. the current notes for this object) - The $remote SHA1 (i.e. the to-be-merged notes for this object) From the pair ($base -> $local, $base -> $remote), we can determine the merge result using regular 3-way rules. If conflicts are encountered in this process, we fail loudly and exit (conflict handling to be added in a future patch), If we can complete the merge without conflicts, the resulting notes tree is committed, and the current notes ref updated. The patch includes added testcases verifying that we can successfully do real conflict-less merges. This patch has been improved by the following contributions: - Jonathan Nieder: Future-proof by always checking add_note() return value - Stephen Boyd: Use test_commit - Jonathan Nieder: Use trace_printf(...) instead of OUTPUT(o, 5, ...) - Junio C Hamano: fixup minor style issues Thanks-to: Jonathan Nieder <jrnieder@gmail.com> Thanks-to: Stephen Boyd <bebarino@gmail.com> Thanks-to: Junio C Hamano <gitster@pobox.com> Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
369 lines
9.1 KiB
Bash
Executable File
369 lines
9.1 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2010 Johan Herland
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#
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test_description='Test merging of notes trees'
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. ./test-lib.sh
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test_expect_success setup '
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test_commit 1st &&
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test_commit 2nd &&
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test_commit 3rd &&
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test_commit 4th &&
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test_commit 5th &&
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# Create notes on 4 first commits
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git config core.notesRef refs/notes/x &&
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git notes add -m "Notes on 1st commit" 1st &&
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git notes add -m "Notes on 2nd commit" 2nd &&
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git notes add -m "Notes on 3rd commit" 3rd &&
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git notes add -m "Notes on 4th commit" 4th
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'
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commit_sha1=$(git rev-parse 1st^{commit})
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commit_sha2=$(git rev-parse 2nd^{commit})
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commit_sha3=$(git rev-parse 3rd^{commit})
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commit_sha4=$(git rev-parse 4th^{commit})
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commit_sha5=$(git rev-parse 5th^{commit})
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verify_notes () {
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notes_ref="$1"
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git -c core.notesRef="refs/notes/$notes_ref" notes |
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sort >"output_notes_$notes_ref" &&
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test_cmp "expect_notes_$notes_ref" "output_notes_$notes_ref" &&
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git -c core.notesRef="refs/notes/$notes_ref" log --format="%H %s%n%N" \
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>"output_log_$notes_ref" &&
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test_cmp "expect_log_$notes_ref" "output_log_$notes_ref"
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}
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cat <<EOF | sort >expect_notes_x
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5e93d24084d32e1cb61f7070505b9d2530cca987 $commit_sha4
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8366731eeee53787d2bdf8fc1eff7d94757e8da0 $commit_sha3
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eede89064cd42441590d6afec6c37b321ada3389 $commit_sha2
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daa55ffad6cb99bf64226532147ffcaf5ce8bdd1 $commit_sha1
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EOF
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cat >expect_log_x <<EOF
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$commit_sha5 5th
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$commit_sha4 4th
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Notes on 4th commit
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$commit_sha3 3rd
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Notes on 3rd commit
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$commit_sha2 2nd
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Notes on 2nd commit
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$commit_sha1 1st
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Notes on 1st commit
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EOF
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test_expect_success 'verify initial notes (x)' '
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verify_notes x
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'
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cp expect_notes_x expect_notes_y
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cp expect_log_x expect_log_y
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test_expect_success 'fail to merge empty notes ref into empty notes ref (z => y)' '
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test_must_fail git -c "core.notesRef=refs/notes/y" notes merge z
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'
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test_expect_success 'fail to merge into various non-notes refs' '
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test_must_fail git -c "core.notesRef=refs/notes" notes merge x &&
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test_must_fail git -c "core.notesRef=refs/notes/" notes merge x &&
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mkdir -p .git/refs/notes/dir &&
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test_must_fail git -c "core.notesRef=refs/notes/dir" notes merge x &&
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test_must_fail git -c "core.notesRef=refs/notes/dir/" notes merge x &&
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test_must_fail git -c "core.notesRef=refs/heads/master" notes merge x &&
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test_must_fail git -c "core.notesRef=refs/notes/y:" notes merge x &&
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test_must_fail git -c "core.notesRef=refs/notes/y:foo" notes merge x &&
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test_must_fail git -c "core.notesRef=refs/notes/foo^{bar" notes merge x
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'
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test_expect_success 'fail to merge various non-note-trees' '
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git config core.notesRef refs/notes/y &&
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test_must_fail git notes merge refs/notes &&
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test_must_fail git notes merge refs/notes/ &&
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test_must_fail git notes merge refs/notes/dir &&
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test_must_fail git notes merge refs/notes/dir/ &&
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test_must_fail git notes merge refs/heads/master &&
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test_must_fail git notes merge x: &&
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test_must_fail git notes merge x:foo &&
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test_must_fail git notes merge foo^{bar
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'
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test_expect_success 'merge notes into empty notes ref (x => y)' '
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git config core.notesRef refs/notes/y &&
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git notes merge x &&
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verify_notes y &&
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# x and y should point to the same notes commit
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test "$(git rev-parse refs/notes/x)" = "$(git rev-parse refs/notes/y)"
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'
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test_expect_success 'merge empty notes ref (z => y)' '
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git notes merge z &&
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# y should not change (still == x)
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test "$(git rev-parse refs/notes/x)" = "$(git rev-parse refs/notes/y)"
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'
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test_expect_success 'change notes on other notes ref (y)' '
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# Not touching notes to 1st commit
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git notes remove 2nd &&
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git notes append -m "More notes on 3rd commit" 3rd &&
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git notes add -f -m "New notes on 4th commit" 4th &&
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git notes add -m "Notes on 5th commit" 5th
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'
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test_expect_success 'merge previous notes commit (y^ => y) => No-op' '
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pre_state="$(git rev-parse refs/notes/y)" &&
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git notes merge y^ &&
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# y should not move
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test "$pre_state" = "$(git rev-parse refs/notes/y)"
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'
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cat <<EOF | sort >expect_notes_y
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0f2efbd00262f2fd41dfae33df8765618eeacd99 $commit_sha5
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dec2502dac3ea161543f71930044deff93fa945c $commit_sha4
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4069cdb399fd45463ec6eef8e051a16a03592d91 $commit_sha3
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daa55ffad6cb99bf64226532147ffcaf5ce8bdd1 $commit_sha1
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EOF
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cat >expect_log_y <<EOF
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$commit_sha5 5th
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Notes on 5th commit
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$commit_sha4 4th
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New notes on 4th commit
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$commit_sha3 3rd
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Notes on 3rd commit
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More notes on 3rd commit
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$commit_sha2 2nd
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$commit_sha1 1st
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Notes on 1st commit
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EOF
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test_expect_success 'verify changed notes on other notes ref (y)' '
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verify_notes y
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'
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test_expect_success 'verify unchanged notes on original notes ref (x)' '
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verify_notes x
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'
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test_expect_success 'merge original notes (x) into changed notes (y) => No-op' '
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git notes merge -vvv x &&
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verify_notes y &&
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verify_notes x
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'
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cp expect_notes_y expect_notes_x
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cp expect_log_y expect_log_x
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test_expect_success 'merge changed (y) into original (x) => Fast-forward' '
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git config core.notesRef refs/notes/x &&
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git notes merge y &&
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verify_notes x &&
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verify_notes y &&
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# x and y should point to same the notes commit
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test "$(git rev-parse refs/notes/x)" = "$(git rev-parse refs/notes/y)"
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'
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test_expect_success 'merge empty notes ref (z => y)' '
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# Prepare empty (but valid) notes ref (z)
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git config core.notesRef refs/notes/z &&
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git notes add -m "foo" &&
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git notes remove &&
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git notes >output_notes_z &&
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test_cmp /dev/null output_notes_z &&
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# Do the merge (z => y)
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git config core.notesRef refs/notes/y &&
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git notes merge z &&
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verify_notes y &&
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# y should no longer point to the same notes commit as x
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test "$(git rev-parse refs/notes/x)" != "$(git rev-parse refs/notes/y)"
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'
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cat <<EOF | sort >expect_notes_y
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0f2efbd00262f2fd41dfae33df8765618eeacd99 $commit_sha5
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dec2502dac3ea161543f71930044deff93fa945c $commit_sha4
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4069cdb399fd45463ec6eef8e051a16a03592d91 $commit_sha3
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d000d30e6ddcfce3a8122c403226a2ce2fd04d9d $commit_sha2
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43add6bd0c8c0bc871ac7991e0f5573cfba27804 $commit_sha1
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EOF
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cat >expect_log_y <<EOF
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$commit_sha5 5th
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Notes on 5th commit
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$commit_sha4 4th
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New notes on 4th commit
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$commit_sha3 3rd
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Notes on 3rd commit
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More notes on 3rd commit
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$commit_sha2 2nd
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New notes on 2nd commit
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$commit_sha1 1st
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Notes on 1st commit
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More notes on 1st commit
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EOF
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test_expect_success 'change notes on other notes ref (y)' '
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# Append to 1st commit notes
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git notes append -m "More notes on 1st commit" 1st &&
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# Add new notes to 2nd commit
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git notes add -m "New notes on 2nd commit" 2nd &&
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verify_notes y
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'
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cat <<EOF | sort >expect_notes_x
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0f2efbd00262f2fd41dfae33df8765618eeacd99 $commit_sha5
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1f257a3a90328557c452f0817d6cc50c89d315d4 $commit_sha4
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daa55ffad6cb99bf64226532147ffcaf5ce8bdd1 $commit_sha1
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EOF
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cat >expect_log_x <<EOF
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$commit_sha5 5th
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Notes on 5th commit
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$commit_sha4 4th
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New notes on 4th commit
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More notes on 4th commit
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$commit_sha3 3rd
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$commit_sha2 2nd
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$commit_sha1 1st
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Notes on 1st commit
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EOF
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test_expect_success 'change notes on notes ref (x)' '
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git config core.notesRef refs/notes/x &&
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git notes remove 3rd &&
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git notes append -m "More notes on 4th commit" 4th &&
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verify_notes x
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'
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cat <<EOF | sort >expect_notes_x
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0f2efbd00262f2fd41dfae33df8765618eeacd99 $commit_sha5
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1f257a3a90328557c452f0817d6cc50c89d315d4 $commit_sha4
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d000d30e6ddcfce3a8122c403226a2ce2fd04d9d $commit_sha2
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43add6bd0c8c0bc871ac7991e0f5573cfba27804 $commit_sha1
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EOF
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cat >expect_log_x <<EOF
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$commit_sha5 5th
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Notes on 5th commit
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$commit_sha4 4th
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New notes on 4th commit
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More notes on 4th commit
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$commit_sha3 3rd
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$commit_sha2 2nd
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New notes on 2nd commit
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$commit_sha1 1st
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Notes on 1st commit
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More notes on 1st commit
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EOF
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test_expect_success 'merge y into x => Non-conflicting 3-way merge' '
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git notes merge y &&
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verify_notes x &&
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verify_notes y
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'
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cat <<EOF | sort >expect_notes_w
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05a4927951bcef347f51486575b878b2b60137f2 $commit_sha3
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d000d30e6ddcfce3a8122c403226a2ce2fd04d9d $commit_sha2
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EOF
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cat >expect_log_w <<EOF
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$commit_sha5 5th
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$commit_sha4 4th
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$commit_sha3 3rd
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New notes on 3rd commit
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$commit_sha2 2nd
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New notes on 2nd commit
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$commit_sha1 1st
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EOF
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test_expect_success 'create notes on new, separate notes ref (w)' '
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git config core.notesRef refs/notes/w &&
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# Add same note as refs/notes/y on 2nd commit
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git notes add -m "New notes on 2nd commit" 2nd &&
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# Add new note on 3rd commit (non-conflicting)
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git notes add -m "New notes on 3rd commit" 3rd &&
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# Verify state of notes on new, separate notes ref (w)
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verify_notes w
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'
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cat <<EOF | sort >expect_notes_x
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0f2efbd00262f2fd41dfae33df8765618eeacd99 $commit_sha5
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1f257a3a90328557c452f0817d6cc50c89d315d4 $commit_sha4
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05a4927951bcef347f51486575b878b2b60137f2 $commit_sha3
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d000d30e6ddcfce3a8122c403226a2ce2fd04d9d $commit_sha2
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43add6bd0c8c0bc871ac7991e0f5573cfba27804 $commit_sha1
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EOF
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cat >expect_log_x <<EOF
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$commit_sha5 5th
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Notes on 5th commit
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$commit_sha4 4th
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New notes on 4th commit
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More notes on 4th commit
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$commit_sha3 3rd
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New notes on 3rd commit
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$commit_sha2 2nd
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New notes on 2nd commit
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$commit_sha1 1st
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Notes on 1st commit
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More notes on 1st commit
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EOF
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test_expect_success 'merge w into x => Non-conflicting history-less merge' '
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git config core.notesRef refs/notes/x &&
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git notes merge w &&
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# Verify new state of notes on other notes ref (x)
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verify_notes x &&
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# Also verify that nothing changed on other notes refs (y and w)
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verify_notes y &&
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verify_notes w
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'
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test_done
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