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#!/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 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
>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 &&
echo >msg.nolog &&
{
echo "* tag 'c3':" &&
echo " commit 3" &&
echo
} >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=format:%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.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
) &&
grep "[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_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_when_finished "git config --unset merge.ff" &&
git 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 'unsuccesful 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 &&
git 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 config branch.master.mergeoptions "" &&
git reset --hard c1 &&
git merge --log c2 &&
git show -s --pretty=tformat:%s%n%b >expect &&
git 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)' '
test_when_finished "git config --remove-section branch.master" &&
test_when_finished "git config --remove-section merge" &&
test_might_fail git config --remove-section branch.master &&
test_might_fail git config --remove-section merge &&
git reset --hard c1 &&
git merge c2 &&
git show -s --pretty=tformat:%s%n%b >expect &&
git config branch.master.mergeoptions "--no-log" &&
git 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 &&
git 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 &&
git 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 &&
git 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 &&
git 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 &&
git 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 &&
git 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 &&
git config branch.master.mergeoptions "" &&
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 &&
git config merge.ff false &&
test_tick &&
git merge c1 &&
git config --remove-section merge &&
verify_merge file result.1 &&
verify_parents $c0 $c1
'
test_debug 'git log --graph --decorate --oneline --all'
test_expect_success 'combine branch.master.mergeoptions with merge.ff' '
git reset --hard c0 &&
git config branch.master.mergeoptions --ff &&
git config merge.ff false &&
test_tick &&
git merge c1 &&
git config --remove-section "branch.master" &&
git config --remove-section "merge" &&
verify_merge file result.1 &&
verify_parents "$c0"
'
test_expect_success 'tolerate unknown values for merge.ff' '
git reset --hard c0 &&
git config merge.ff something-new &&
test_tick &&
git merge c1 2>message &&
git config --remove-section "merge" &&
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 'combining --ff-only and --no-ff is refused' '
test_must_fail git merge --ff-only --no-ff c1 &&
test_must_fail git merge --no-ff --ff-only c1
'
test_expect_success 'merge c0 with c1 (ff overrides no-ff)' '
git reset --hard c0 &&
git 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.nolog 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^ &&
git 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 &&
git config branch.master.mergeoptions "" &&
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 &&
git config branch.master.mergeoptions "" &&
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 &&
git config branch.master.mergeoptions "" &&
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=format:%s HEAD >actual.branch &&
git reset --keep HEAD^ &&
git merge c5~1 &&
git show -s --pretty=format:%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_done
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