#!/bin/sh # # Copyright (c) 2007 Lars Hjemli # test_description='git merge Testing basic merge operations/option parsing. ! [c0] commit 0 ! [c1] commit 1 ! [c2] commit 2 ! [c3] commit 3 ! [c4] c4 ! [c5] c5 ! [c6] c6 * [master] Merge commit 'c1' -------- - [master] Merge commit 'c1' + * [c1] commit 1 + [c6] c6 + [c5] c5 ++ [c4] c4 ++++ [c3] commit 3 + [c2] commit 2 +++++++* [c0] commit 0 ' . ./test-lib.sh . "$TEST_DIRECTORY"/lib-gpg.sh printf '%s\n' 1 2 3 4 5 6 7 8 9 >file printf '%s\n' '1 X' 2 3 4 5 6 7 8 9 >file.1 printf '%s\n' 1 2 3 4 '5 X' 6 7 8 9 >file.5 printf '%s\n' 1 2 3 4 5 6 7 8 '9 X' >file.9 printf '%s\n' 1 2 3 4 5 6 7 8 '9 Y' >file.9y printf '%s\n' '1 X' 2 3 4 5 6 7 8 9 >result.1 printf '%s\n' '1 X' 2 3 4 '5 X' 6 7 8 9 >result.1-5 printf '%s\n' '1 X' 2 3 4 '5 X' 6 7 8 '9 X' >result.1-5-9 printf '%s\n' 1 2 3 4 5 6 7 8 '9 Z' >result.9z >empty create_merge_msgs () { echo "Merge tag 'c2'" >msg.1-5 && echo "Merge tags 'c2' and 'c3'" >msg.1-5-9 && { echo "Squashed commit of the following:" && echo && git log --no-merges ^HEAD c1 } >squash.1 && { echo "Squashed commit of the following:" && echo && git log --no-merges ^HEAD c2 } >squash.1-5 && { echo "Squashed commit of the following:" && echo && git log --no-merges ^HEAD c2 c3 } >squash.1-5-9 && : >msg.nologff && : >msg.nolognoff && { echo "* tag 'c3':" && echo " commit 3" } >msg.log } verify_merge () { test_cmp "$2" "$1" && git update-index --refresh && git diff --exit-code && if test -n "$3" then git show -s --pretty=tformat:%s HEAD >msg.act && test_cmp "$3" msg.act fi } verify_head () { echo "$1" >head.expected && git rev-parse HEAD >head.actual && test_cmp head.expected head.actual } verify_parents () { printf '%s\n' "$@" >parents.expected && >parents.actual && i=1 && while test $i -le $# do git rev-parse HEAD^$i >>parents.actual && i=$(expr $i + 1) || return 1 done && test_must_fail git rev-parse --verify "HEAD^$i" && test_cmp parents.expected parents.actual } verify_mergeheads () { printf '%s\n' "$@" >mergehead.expected && while read sha1 rest do git rev-parse $sha1 done <.git/MERGE_HEAD >mergehead.actual && test_cmp mergehead.expected mergehead.actual } verify_no_mergehead () { ! test -e .git/MERGE_HEAD } test_expect_success 'setup' ' git add file && test_tick && git commit -m "commit 0" && git tag c0 && c0=$(git rev-parse HEAD) && cp file.1 file && git add file && test_tick && git commit -m "commit 1" && git tag c1 && c1=$(git rev-parse HEAD) && git reset --hard "$c0" && cp file.5 file && git add file && test_tick && git commit -m "commit 2" && git tag c2 && c2=$(git rev-parse HEAD) && git reset --hard "$c0" && cp file.9y file && git add file && test_tick && git commit -m "commit 7" && git tag c7 && git reset --hard "$c0" && cp file.9 file && git add file && test_tick && git commit -m "commit 3" && git tag c3 && c3=$(git rev-parse HEAD) && git reset --hard "$c0" && create_merge_msgs ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'test option parsing' ' test_must_fail git merge -$ c1 && test_must_fail git merge --no-such c1 && test_must_fail git merge -s foobar c1 && test_must_fail git merge -s=foobar c1 && test_must_fail git merge -m && test_must_fail git merge ' test_expect_success 'merge -h with invalid index' ' mkdir broken && ( cd broken && git init && >.git/index && test_expect_code 129 git merge -h 2>usage ) && test_i18ngrep "[Uu]sage: git merge" broken/usage ' test_expect_success 'reject non-strategy with a git-merge-foo name' ' test_must_fail git merge -s index c1 ' test_expect_success 'merge c0 with c1' ' echo "OBJID HEAD@{0}: merge c1: Fast-forward" >reflog.expected && git reset --hard c0 && git merge c1 && verify_merge file result.1 && verify_head "$c1" && git reflog -1 >reflog.actual && sed "s/$_x05[0-9a-f]*/OBJID/g" reflog.actual >reflog.fuzzy && test_cmp reflog.expected reflog.fuzzy ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'merge c0 with c1 with --ff-only' ' git reset --hard c0 && git merge --ff-only c1 && git merge --ff-only HEAD c0 c1 && verify_merge file result.1 && verify_head "$c1" ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'merge from unborn branch' ' git checkout -f master && test_might_fail git branch -D kid && echo "OBJID HEAD@{0}: initial pull" >reflog.expected && git checkout --orphan kid && test_when_finished "git checkout -f master" && git rm -fr . && test_tick && git merge --ff-only c1 && verify_merge file result.1 && verify_head "$c1" && git reflog -1 >reflog.actual && sed "s/$_x05[0-9a-f][0-9a-f]/OBJID/g" reflog.actual >reflog.fuzzy && test_cmp reflog.expected reflog.fuzzy ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'merge c1 with c2' ' git reset --hard c1 && test_tick && git merge c2 && verify_merge file result.1-5 msg.1-5 && verify_parents $c1 $c2 ' test_expect_success 'merge --squash c3 with c7' ' git reset --hard c3 && test_must_fail git merge --squash c7 && cat result.9z >file && git commit --no-edit -a && { cat <<-EOF Squashed commit of the following: $(git show -s c7) # Conflicts: # file EOF } >expect && git cat-file commit HEAD | sed -e '1,/^$/d' >actual && test_cmp expect actual ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'merge c1 with c2 and c3' ' git reset --hard c1 && test_tick && git merge c2 c3 && verify_merge file result.1-5-9 msg.1-5-9 && verify_parents $c1 $c2 $c3 ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'merges with --ff-only' ' git reset --hard c1 && test_tick && test_must_fail git merge --ff-only c2 && test_must_fail git merge --ff-only c3 && test_must_fail git merge --ff-only c2 c3 && git reset --hard c0 && git merge c3 && verify_head $c3 ' test_expect_success 'merges with merge.ff=only' ' git reset --hard c1 && test_tick && test_config merge.ff "only" && test_must_fail git merge c2 && test_must_fail git merge c3 && test_must_fail git merge c2 c3 && git reset --hard c0 && git merge c3 && verify_head $c3 ' test_expect_success 'merge c0 with c1 (no-commit)' ' git reset --hard c0 && git merge --no-commit c1 && verify_merge file result.1 && verify_head $c1 ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'merge c1 with c2 (no-commit)' ' git reset --hard c1 && git merge --no-commit c2 && verify_merge file result.1-5 && verify_head $c1 && verify_mergeheads $c2 ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'merge c1 with c2 and c3 (no-commit)' ' git reset --hard c1 && git merge --no-commit c2 c3 && verify_merge file result.1-5-9 && verify_head $c1 && verify_mergeheads $c2 $c3 ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'merge c0 with c1 (squash)' ' git reset --hard c0 && git merge --squash c1 && verify_merge file result.1 && verify_head $c0 && verify_no_mergehead && test_cmp squash.1 .git/SQUASH_MSG ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'merge c0 with c1 (squash, ff-only)' ' git reset --hard c0 && git merge --squash --ff-only c1 && verify_merge file result.1 && verify_head $c0 && verify_no_mergehead && test_cmp squash.1 .git/SQUASH_MSG ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'merge c1 with c2 (squash)' ' git reset --hard c1 && git merge --squash c2 && verify_merge file result.1-5 && verify_head $c1 && verify_no_mergehead && test_cmp squash.1-5 .git/SQUASH_MSG ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'unsuccessful merge of c1 with c2 (squash, ff-only)' ' git reset --hard c1 && test_must_fail git merge --squash --ff-only c2 ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'merge c1 with c2 and c3 (squash)' ' git reset --hard c1 && git merge --squash c2 c3 && verify_merge file result.1-5-9 && verify_head $c1 && verify_no_mergehead && test_cmp squash.1-5-9 .git/SQUASH_MSG ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'merge c1 with c2 (no-commit in config)' ' git reset --hard c1 && test_config branch.master.mergeoptions "--no-commit" && git merge c2 && verify_merge file result.1-5 && verify_head $c1 && verify_mergeheads $c2 ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'merge c1 with c2 (log in config)' ' git reset --hard c1 && git merge --log c2 && git show -s --pretty=tformat:%s%n%b >expect && test_config branch.master.mergeoptions "--log" && git reset --hard c1 && git merge c2 && git show -s --pretty=tformat:%s%n%b >actual && test_cmp expect actual ' test_expect_success 'merge c1 with c2 (log in config gets overridden)' ' git reset --hard c1 && git merge c2 && git show -s --pretty=tformat:%s%n%b >expect && test_config branch.master.mergeoptions "--no-log" && test_config merge.log "true" && git reset --hard c1 && git merge c2 && git show -s --pretty=tformat:%s%n%b >actual && test_cmp expect actual ' test_expect_success 'merge c1 with c2 (squash in config)' ' git reset --hard c1 && test_config branch.master.mergeoptions "--squash" && git merge c2 && verify_merge file result.1-5 && verify_head $c1 && verify_no_mergehead && test_cmp squash.1-5 .git/SQUASH_MSG ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'override config option -n with --summary' ' git reset --hard c1 && test_config branch.master.mergeoptions "-n" && test_tick && git merge --summary c2 >diffstat.txt && verify_merge file result.1-5 msg.1-5 && verify_parents $c1 $c2 && if ! grep "^ file | *2 +-$" diffstat.txt then echo "[OOPS] diffstat was not generated with --summary" false fi ' test_expect_success 'override config option -n with --stat' ' git reset --hard c1 && test_config branch.master.mergeoptions "-n" && test_tick && git merge --stat c2 >diffstat.txt && verify_merge file result.1-5 msg.1-5 && verify_parents $c1 $c2 && if ! grep "^ file | *2 +-$" diffstat.txt then echo "[OOPS] diffstat was not generated with --stat" false fi ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'override config option --stat' ' git reset --hard c1 && test_config branch.master.mergeoptions "--stat" && test_tick && git merge -n c2 >diffstat.txt && verify_merge file result.1-5 msg.1-5 && verify_parents $c1 $c2 && if grep "^ file | *2 +-$" diffstat.txt then echo "[OOPS] diffstat was generated" false fi ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'merge c1 with c2 (override --no-commit)' ' git reset --hard c1 && test_config branch.master.mergeoptions "--no-commit" && test_tick && git merge --commit c2 && verify_merge file result.1-5 msg.1-5 && verify_parents $c1 $c2 ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'merge c1 with c2 (override --squash)' ' git reset --hard c1 && test_config branch.master.mergeoptions "--squash" && test_tick && git merge --no-squash c2 && verify_merge file result.1-5 msg.1-5 && verify_parents $c1 $c2 ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'merge c0 with c1 (no-ff)' ' git reset --hard c0 && test_tick && git merge --no-ff c1 && verify_merge file result.1 && verify_parents $c0 $c1 ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'merge c0 with c1 (merge.ff=false)' ' git reset --hard c0 && test_config merge.ff "false" && test_tick && git merge c1 && verify_merge file result.1 && verify_parents $c0 $c1 ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'combine branch.master.mergeoptions with merge.ff' ' git reset --hard c0 && test_config branch.master.mergeoptions "--ff" && test_config merge.ff "false" && test_tick && git merge c1 && verify_merge file result.1 && verify_parents "$c0" ' test_expect_success 'tolerate unknown values for merge.ff' ' git reset --hard c0 && test_config merge.ff "something-new" && test_tick && git merge c1 2>message && verify_head "$c1" && test_cmp empty message ' test_expect_success 'combining --squash and --no-ff is refused' ' git reset --hard c0 && test_must_fail git merge --squash --no-ff c1 && test_must_fail git merge --no-ff --squash c1 ' test_expect_success 'option --ff-only overwrites --no-ff' ' git merge --no-ff --ff-only c1 && test_must_fail git merge --no-ff --ff-only c2 ' test_expect_success 'option --no-ff overrides merge.ff=only config' ' git reset --hard c0 && test_config merge.ff only && git merge --no-ff c1 ' test_expect_success 'merge c0 with c1 (ff overrides no-ff)' ' git reset --hard c0 && test_config branch.master.mergeoptions "--no-ff" && git merge --ff c1 && verify_merge file result.1 && verify_head $c1 ' test_expect_success 'merge log message' ' git reset --hard c0 && git merge --no-log c2 && git show -s --pretty=format:%b HEAD >msg.act && test_cmp msg.nologff msg.act && git reset --hard c0 && test_config branch.master.mergeoptions "--no-ff" && git merge --no-log c2 && git show -s --pretty=format:%b HEAD >msg.act && test_cmp msg.nolognoff msg.act && git merge --log c3 && git show -s --pretty=format:%b HEAD >msg.act && test_cmp msg.log msg.act && git reset --hard HEAD^ && test_config merge.log "yes" && git merge c3 && git show -s --pretty=format:%b HEAD >msg.act && test_cmp msg.log msg.act ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'merge c1 with c0, c2, c0, and c1' ' git reset --hard c1 && test_tick && git merge c0 c2 c0 c1 && verify_merge file result.1-5 && verify_parents $c1 $c2 ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'merge c1 with c0, c2, c0, and c1' ' git reset --hard c1 && test_tick && git merge c0 c2 c0 c1 && verify_merge file result.1-5 && verify_parents $c1 $c2 ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'merge c1 with c1 and c2' ' git reset --hard c1 && test_tick && git merge c1 c2 && verify_merge file result.1-5 && verify_parents $c1 $c2 ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'merge fast-forward in a dirty tree' ' git reset --hard c0 && mv file file1 && cat file1 >file && rm -f file1 && git merge c2 ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'in-index merge' ' git reset --hard c0 && git merge --no-ff -s resolve c1 >out && test_i18ngrep "Wonderful." out && verify_parents $c0 $c1 ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'refresh the index before merging' ' git reset --hard c1 && cp file file.n && mv -f file.n file && git merge c3 ' cat >expected.branch <<\EOF Merge branch 'c5-branch' (early part) EOF cat >expected.tag <<\EOF Merge commit 'c5~1' EOF test_expect_success 'merge early part of c2' ' git reset --hard c3 && echo c4 >c4.c && git add c4.c && git commit -m c4 && git tag c4 && echo c5 >c5.c && git add c5.c && git commit -m c5 && git tag c5 && git reset --hard c3 && echo c6 >c6.c && git add c6.c && git commit -m c6 && git tag c6 && git branch -f c5-branch c5 && git merge c5-branch~1 && git show -s --pretty=tformat:%s HEAD >actual.branch && git reset --keep HEAD^ && git merge c5~1 && git show -s --pretty=tformat:%s HEAD >actual.tag && test_cmp expected.branch actual.branch && test_cmp expected.tag actual.tag ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'merge --no-ff --no-commit && commit' ' git reset --hard c0 && git merge --no-ff --no-commit c1 && EDITOR=: git commit && verify_parents $c0 $c1 ' test_debug 'git log --graph --decorate --oneline --all' test_expect_success 'amending no-ff merge commit' ' EDITOR=: git commit --amend && verify_parents $c0 $c1 ' test_debug 'git log --graph --decorate --oneline --all' cat >editor <<\EOF #!/bin/sh # Add a new message string that was not in the template ( echo "Merge work done on the side branch c1" echo cat <"$1" ) >"$1.tmp" && mv "$1.tmp" "$1" # strip comments and blank lines from end of message sed -e '/^#/d' < "$1" | sed -e :a -e '/^\n*$/{$d;N;ba' -e '}' > expected EOF chmod 755 editor test_expect_success 'merge --no-ff --edit' ' git reset --hard c0 && EDITOR=./editor git merge --no-ff --edit c1 && verify_parents $c0 $c1 && git cat-file commit HEAD >raw && grep "work done on the side branch" raw && sed "1,/^$/d" >actual raw && test_cmp actual expected ' test_expect_success GPG 'merge --ff-only tag' ' git reset --hard c0 && git commit --allow-empty -m "A newer commit" && git tag -s -m "A newer commit" signed && git reset --hard c0 && git merge --ff-only signed && git rev-parse signed^0 >expect && git rev-parse HEAD >actual && test_cmp actual expect ' test_expect_success GPG 'merge --no-edit tag should skip editor' ' git reset --hard c0 && git commit --allow-empty -m "A newer commit" && git tag -f -s -m "A newer commit" signed && git reset --hard c0 && EDITOR=false git merge --no-edit signed && git rev-parse signed^0 >expect && git rev-parse HEAD^2 >actual && test_cmp actual expect ' test_expect_success 'set up mod-256 conflict scenario' ' # 256 near-identical stanzas... for i in $(test_seq 1 256); do for j in 1 2 3 4 5; do echo $i-$j done done >file && git add file && git commit -m base && # one side changes the first line of each to "master" sed s/-1/-master/ tmp && mv tmp file && git commit -am master && # and the other to "side"; merging the two will # yield 256 separate conflicts git checkout -b side HEAD^ && sed s/-1/-side/ tmp && mv tmp file && git commit -am side ' test_expect_success 'merge detects mod-256 conflicts (recursive)' ' git reset --hard && test_must_fail git merge -s recursive master ' test_expect_success 'merge detects mod-256 conflicts (resolve)' ' git reset --hard && test_must_fail git merge -s resolve master ' test_expect_success 'merge nothing into void' ' git init void && ( cd void && git remote add up .. && git fetch up && test_must_fail git merge FETCH_HEAD ) ' test_done