[thirdparty/git.git] / t / t7600-merge.sh

#!/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_expect_success 'set up test data and helpers' '
	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 &&

	create_merge_msgs() {
		echo "Merge commit '\''c2'\''" >msg.1-5 &&
		echo "Merge commit '\''c2'\''; commit '\''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 "* commit '\''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_cmp parents.expected parents.actual
	} &&

	verify_mergeheads() {
		printf "%s\n" "$@" >mergehead.expected &&
		test_cmp mergehead.expected .git/MERGE_HEAD
	} &&

	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 'combining --squash and --no-ff is refused' '
	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 C_LOCALE_OUTPUT 'in-index merge' '
	git reset --hard c0 &&
	git merge --no-ff -s resolve c1 >out &&
	grep "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'

test_done
Commit	Line	Data
a85d1b69 LH	1	#!/bin/sh
	2	#
	3	# Copyright (c) 2007 Lars Hjemli
	4	#
	5
47a528ad	6	test_description='git merge
a85d1b69	7
4c073457 JN	8	Testing basic merge operations/option parsing.
	9
	10	! [c0] commit 0
	11	! [c1] commit 1
	12	! [c2] commit 2
	13	! [c3] commit 3
	14	! [c4] c4
	15	! [c5] c5
	16	! [c6] c6
	17	* [master] Merge commit 'c1'
	18	--------
	19	- [master] Merge commit 'c1'
	20	+ * [c1] commit 1
	21	+ [c6] c6
	22	+ [c5] c5
	23	++ [c4] c4
	24	++++ [c3] commit 3
	25	+ [c2] commit 2
	26	+++++++* [c0] commit 0
	27	'
a85d1b69 LH	28
	29	. ./test-lib.sh
	30
4c073457 JN	31	test_expect_success 'set up test data and helpers' '
	32	printf "%s\n" 1 2 3 4 5 6 7 8 9 >file &&
	33	printf "%s\n" "1 X" 2 3 4 5 6 7 8 9 >file.1 &&
	34	printf "%s\n" 1 2 3 4 "5 X" 6 7 8 9 >file.5 &&
	35	printf "%s\n" 1 2 3 4 5 6 7 8 "9 X" >file.9 &&
	36	printf "%s\n" "1 X" 2 3 4 5 6 7 8 9 >result.1 &&
	37	printf "%s\n" "1 X" 2 3 4 "5 X" 6 7 8 9 >result.1-5 &&
	38	printf "%s\n" "1 X" 2 3 4 "5 X" 6 7 8 "9 X" >result.1-5-9 &&
	39
	40	create_merge_msgs() {
	41	echo "Merge commit '\''c2'\''" >msg.1-5 &&
	42	echo "Merge commit '\''c2'\''; commit '\''c3'\''" >msg.1-5-9 &&
	43	{
	44	echo "Squashed commit of the following:" &&
	45	echo &&
	46	git log --no-merges ^HEAD c1
	47	} >squash.1 &&
	48	{
	49	echo "Squashed commit of the following:" &&
	50	echo &&
	51	git log --no-merges ^HEAD c2
	52	} >squash.1-5 &&
	53	{
	54	echo "Squashed commit of the following:" &&
	55	echo &&
	56	git log --no-merges ^HEAD c2 c3
	57	} >squash.1-5-9 &&
	58	echo >msg.nolog &&
	59	{
	60	echo "* commit '\''c3'\'':" &&
	61	echo " commit 3" &&
	62	echo
	63	} >msg.log
	64	} &&
	65
	66	verify_merge() {
	67	test_cmp "$2" "$1" &&
	68	git update-index --refresh &&
	69	git diff --exit-code &&
	70	if test -n "$3"
a85d1b69	71	then
4c073457 JN	72	git show -s --pretty=format:%s HEAD >msg.act &&
4c073457 JN	73	test_cmp "$3" msg.act
a85d1b69	74	fi
4c073457 JN	75	} &&
	76
	77	verify_head() {
	78	echo "$1" >head.expected &&
	79	git rev-parse HEAD >head.actual &&
	80	test_cmp head.expected head.actual
	81	} &&
	82
	83	verify_parents() {
	84	printf "%s\n" "$@" >parents.expected &&
	85	>parents.actual &&
	86	i=1 &&
	87	while test $i -le $#
	88	do
	89	git rev-parse HEAD^$i >>parents.actual &&
	90	i=$(expr $i + 1) \|\|
a85d1b69	91	return 1
4c073457 JN	92	done &&
	93	test_cmp parents.expected parents.actual
	94	} &&
a85d1b69	95
4c073457 JN	96	verify_mergeheads() {
	97	printf "%s\n" "$@" >mergehead.expected &&
	98	test_cmp mergehead.expected .git/MERGE_HEAD
	99	} &&
a85d1b69	100
4c073457 JN	101	verify_no_mergehead() {
	102	! test -e .git/MERGE_HEAD
	103	}
	104	'
a85d1b69 LH	105
	106	test_expect_success 'setup' '
	107	git add file &&
	108	test_tick &&
	109	git commit -m "commit 0" &&
	110	git tag c0 &&
	111	c0=$(git rev-parse HEAD) &&
	112	cp file.1 file &&
	113	git add file &&
	114	test_tick &&
	115	git commit -m "commit 1" &&
	116	git tag c1 &&
	117	c1=$(git rev-parse HEAD) &&
	118	git reset --hard "$c0" &&
	119	cp file.5 file &&
	120	git add file &&
	121	test_tick &&
	122	git commit -m "commit 2" &&
	123	git tag c2 &&
	124	c2=$(git rev-parse HEAD) &&
	125	git reset --hard "$c0" &&
	126	cp file.9 file &&
	127	git add file &&
	128	test_tick &&
	129	git commit -m "commit 3" &&
	130	git tag c3 &&
	131	c3=$(git rev-parse HEAD)
	132	git reset --hard "$c0" &&
	133	create_merge_msgs
	134	'
	135
df516fb5	136	test_debug 'git log --graph --decorate --oneline --all'
a85d1b69	137
74f5b7fb	138	test_expect_success 'test option parsing' '
01941bd5 JS	139	test_must_fail git merge -$ c1 &&
	140	test_must_fail git merge --no-such c1 &&
	141	test_must_fail git merge -s foobar c1 &&
	142	test_must_fail git merge -s=foobar c1 &&
	143	test_must_fail git merge -m &&
	144	test_must_fail git merge
a85d1b69 LH	145	'
a85d1b69 LH	146
da53eec6 NTND	147	test_expect_success 'merge -h with invalid index' '
	148	mkdir broken &&
	149	(
	150	cd broken &&
	151	git init &&
	152	>.git/index &&
	153	test_expect_code 129 git merge -h 2>usage
	154	) &&
	155	grep "[Uu]sage: git merge" broken/usage
	156	'
	157
dce61e72 MV	158	test_expect_success 'reject non-strategy with a git-merge-foo name' '
	159	test_must_fail git merge -s index c1
	160	'
	161
a85d1b69	162	test_expect_success 'merge c0 with c1' '
ff372c78 JN	163	echo "OBJID HEAD@{0}: merge c1: Fast-forward" >reflog.expected &&
ff372c78 JN	164
a85d1b69 LH	165	git reset --hard c0 &&
	166	git merge c1 &&
	167	verify_merge file result.1 &&
ff372c78 JN	168	verify_head "$c1" &&
	169
	170	git reflog -1 >reflog.actual &&
	171	sed "s/$_x05[0-9a-f]*/OBJID/g" reflog.actual >reflog.fuzzy &&
	172	test_cmp reflog.expected reflog.fuzzy
a85d1b69 LH	173	'
a85d1b69 LH	174
df516fb5	175	test_debug 'git log --graph --decorate --oneline --all'
a85d1b69	176
13474835 BG	177	test_expect_success 'merge c0 with c1 with --ff-only' '
	178	git reset --hard c0 &&
	179	git merge --ff-only c1 &&
	180	git merge --ff-only HEAD c0 c1 &&
	181	verify_merge file result.1 &&
	182	verify_head "$c1"
	183	'
	184
df516fb5	185	test_debug 'git log --graph --decorate --oneline --all'
94d63ce2 JN	186
	187	test_expect_success 'merge from unborn branch' '
	188	git checkout -f master &&
	189	test_might_fail git branch -D kid &&
	190
	191	echo "OBJID HEAD@{0}: initial pull" >reflog.expected &&
	192
	193	git checkout --orphan kid &&
	194	test_when_finished "git checkout -f master" &&
	195	git rm -fr . &&
	196	test_tick &&
	197	git merge --ff-only c1 &&
	198	verify_merge file result.1 &&
	199	verify_head "$c1" &&
	200
	201	git reflog -1 >reflog.actual &&
	202	sed "s/$_x05[0-9a-f][0-9a-f]/OBJID/g" reflog.actual >reflog.fuzzy &&
	203	test_cmp reflog.expected reflog.fuzzy
	204	'
	205
	206	test_debug 'git log --graph --decorate --oneline --all'
13474835	207
a85d1b69 LH	208	test_expect_success 'merge c1 with c2' '
	209	git reset --hard c1 &&
	210	test_tick &&
	211	git merge c2 &&
	212	verify_merge file result.1-5 msg.1-5 &&
	213	verify_parents $c1 $c2
	214	'
	215
df516fb5	216	test_debug 'git log --graph --decorate --oneline --all'
a85d1b69 LH	217
	218	test_expect_success 'merge c1 with c2 and c3' '
	219	git reset --hard c1 &&
	220	test_tick &&
	221	git merge c2 c3 &&
	222	verify_merge file result.1-5-9 msg.1-5-9 &&
	223	verify_parents $c1 $c2 $c3
	224	'
	225
df516fb5	226	test_debug 'git log --graph --decorate --oneline --all'
a85d1b69	227
f23e8dec	228	test_expect_success 'merges with --ff-only' '
13474835 BG	229	git reset --hard c1 &&
	230	test_tick &&
	231	test_must_fail git merge --ff-only c2 &&
	232	test_must_fail git merge --ff-only c3 &&
f23e8dec JH	233	test_must_fail git merge --ff-only c2 c3 &&
	234	git reset --hard c0 &&
	235	git merge c3 &&
	236	verify_head $c3
	237	'
	238
	239	test_expect_success 'merges with merge.ff=only' '
	240	git reset --hard c1 &&
	241	test_tick &&
	242	test_when_finished "git config --unset merge.ff" &&
	243	git config merge.ff only &&
	244	test_must_fail git merge c2 &&
	245	test_must_fail git merge c3 &&
	246	test_must_fail git merge c2 c3 &&
	247	git reset --hard c0 &&
	248	git merge c3 &&
	249	verify_head $c3
13474835 BG	250	'
13474835 BG	251
a85d1b69 LH	252	test_expect_success 'merge c0 with c1 (no-commit)' '
	253	git reset --hard c0 &&
	254	git merge --no-commit c1 &&
	255	verify_merge file result.1 &&
	256	verify_head $c1
	257	'
	258
df516fb5	259	test_debug 'git log --graph --decorate --oneline --all'
a85d1b69 LH	260
	261	test_expect_success 'merge c1 with c2 (no-commit)' '
	262	git reset --hard c1 &&
	263	git merge --no-commit c2 &&
	264	verify_merge file result.1-5 &&
	265	verify_head $c1 &&
	266	verify_mergeheads $c2
	267	'
	268
df516fb5	269	test_debug 'git log --graph --decorate --oneline --all'
a85d1b69 LH	270
	271	test_expect_success 'merge c1 with c2 and c3 (no-commit)' '
	272	git reset --hard c1 &&
	273	git merge --no-commit c2 c3 &&
	274	verify_merge file result.1-5-9 &&
	275	verify_head $c1 &&
	276	verify_mergeheads $c2 $c3
	277	'
	278
df516fb5	279	test_debug 'git log --graph --decorate --oneline --all'
a85d1b69 LH	280
	281	test_expect_success 'merge c0 with c1 (squash)' '
	282	git reset --hard c0 &&
	283	git merge --squash c1 &&
	284	verify_merge file result.1 &&
	285	verify_head $c0 &&
	286	verify_no_mergehead &&
4c073457	287	test_cmp squash.1 .git/SQUASH_MSG
a85d1b69 LH	288	'
a85d1b69 LH	289
df516fb5	290	test_debug 'git log --graph --decorate --oneline --all'
a85d1b69	291
13474835 BG	292	test_expect_success 'merge c0 with c1 (squash, ff-only)' '
	293	git reset --hard c0 &&
	294	git merge --squash --ff-only c1 &&
	295	verify_merge file result.1 &&
	296	verify_head $c0 &&
	297	verify_no_mergehead &&
4c073457	298	test_cmp squash.1 .git/SQUASH_MSG
13474835 BG	299	'
13474835 BG	300
df516fb5	301	test_debug 'git log --graph --decorate --oneline --all'
13474835	302
a85d1b69 LH	303	test_expect_success 'merge c1 with c2 (squash)' '
	304	git reset --hard c1 &&
	305	git merge --squash c2 &&
	306	verify_merge file result.1-5 &&
	307	verify_head $c1 &&
	308	verify_no_mergehead &&
4c073457	309	test_cmp squash.1-5 .git/SQUASH_MSG
a85d1b69 LH	310	'
a85d1b69 LH	311
df516fb5	312	test_debug 'git log --graph --decorate --oneline --all'
a85d1b69	313
13474835 BG	314	test_expect_success 'unsuccesful merge of c1 with c2 (squash, ff-only)' '
	315	git reset --hard c1 &&
	316	test_must_fail git merge --squash --ff-only c2
	317	'
	318
df516fb5	319	test_debug 'git log --graph --decorate --oneline --all'
13474835	320
a85d1b69 LH	321	test_expect_success 'merge c1 with c2 and c3 (squash)' '
	322	git reset --hard c1 &&
	323	git merge --squash c2 c3 &&
	324	verify_merge file result.1-5-9 &&
	325	verify_head $c1 &&
	326	verify_no_mergehead &&
4c073457	327	test_cmp squash.1-5-9 .git/SQUASH_MSG
a85d1b69 LH	328	'
a85d1b69 LH	329
df516fb5	330	test_debug 'git log --graph --decorate --oneline --all'
a85d1b69	331
aec7b362 LH	332	test_expect_success 'merge c1 with c2 (no-commit in config)' '
	333	git reset --hard c1 &&
	334	git config branch.master.mergeoptions "--no-commit" &&
	335	git merge c2 &&
	336	verify_merge file result.1-5 &&
	337	verify_head $c1 &&
	338	verify_mergeheads $c2
	339	'
	340
df516fb5	341	test_debug 'git log --graph --decorate --oneline --all'
aec7b362	342
0d8fc3ef JH	343	test_expect_success 'merge c1 with c2 (log in config)' '
	344	git config branch.master.mergeoptions "" &&
	345	git reset --hard c1 &&
	346	git merge --log c2 &&
	347	git show -s --pretty=tformat:%s%n%b >expect &&
	348
	349	git config branch.master.mergeoptions --log &&
	350	git reset --hard c1 &&
	351	git merge c2 &&
	352	git show -s --pretty=tformat:%s%n%b >actual &&
	353
	354	test_cmp expect actual
	355	'
	356
	357	test_expect_success 'merge c1 with c2 (log in config gets overridden)' '
541d1fa8 JH	358	test_when_finished "git config --remove-section branch.master" &&
	359	test_when_finished "git config --remove-section merge" &&
	360	test_might_fail git config --remove-section branch.master &&
	361	test_might_fail git config --remove-section merge &&
	362
0d8fc3ef JH	363	git reset --hard c1 &&
	364	git merge c2 &&
	365	git show -s --pretty=tformat:%s%n%b >expect &&
	366
	367	git config branch.master.mergeoptions "--no-log" &&
	368	git config merge.log true &&
	369	git reset --hard c1 &&
	370	git merge c2 &&
	371	git show -s --pretty=tformat:%s%n%b >actual &&
	372
	373	test_cmp expect actual
	374	'
	375
aec7b362 LH	376	test_expect_success 'merge c1 with c2 (squash in config)' '
	377	git reset --hard c1 &&
	378	git config branch.master.mergeoptions "--squash" &&
	379	git merge c2 &&
	380	verify_merge file result.1-5 &&
	381	verify_head $c1 &&
	382	verify_no_mergehead &&
4c073457	383	test_cmp squash.1-5 .git/SQUASH_MSG
aec7b362 LH	384	'
aec7b362 LH	385
df516fb5	386	test_debug 'git log --graph --decorate --oneline --all'
aec7b362	387
d8abe148	388	test_expect_success 'override config option -n with --summary' '
aec7b362 LH	389	git reset --hard c1 &&
	390	git config branch.master.mergeoptions "-n" &&
	391	test_tick &&
	392	git merge --summary c2 >diffstat.txt &&
	393	verify_merge file result.1-5 msg.1-5 &&
	394	verify_parents $c1 $c2 &&
aadbe44f	395	if ! grep "^ file \| *2 +-$" diffstat.txt
aec7b362	396	then
d8abe148 SG	397	echo "[OOPS] diffstat was not generated with --summary"
	398	false
	399	fi
	400	'
	401
	402	test_expect_success 'override config option -n with --stat' '
	403	git reset --hard c1 &&
	404	git config branch.master.mergeoptions "-n" &&
	405	test_tick &&
	406	git merge --stat c2 >diffstat.txt &&
	407	verify_merge file result.1-5 msg.1-5 &&
	408	verify_parents $c1 $c2 &&
	409	if ! grep "^ file \| *2 +-$" diffstat.txt
	410	then
	411	echo "[OOPS] diffstat was not generated with --stat"
	412	false
aec7b362 LH	413	fi
	414	'
	415
df516fb5	416	test_debug 'git log --graph --decorate --oneline --all'
aec7b362	417
d8abe148	418	test_expect_success 'override config option --stat' '
aec7b362	419	git reset --hard c1 &&
d8abe148	420	git config branch.master.mergeoptions "--stat" &&
aec7b362 LH	421	test_tick &&
	422	git merge -n c2 >diffstat.txt &&
	423	verify_merge file result.1-5 msg.1-5 &&
	424	verify_parents $c1 $c2 &&
aadbe44f	425	if grep "^ file \| *2 +-$" diffstat.txt
aec7b362 LH	426	then
	427	echo "[OOPS] diffstat was generated"
	428	false
	429	fi
	430	'
	431
df516fb5	432	test_debug 'git log --graph --decorate --oneline --all'
aec7b362	433
d08af0ad LH	434	test_expect_success 'merge c1 with c2 (override --no-commit)' '
	435	git reset --hard c1 &&
	436	git config branch.master.mergeoptions "--no-commit" &&
	437	test_tick &&
	438	git merge --commit c2 &&
	439	verify_merge file result.1-5 msg.1-5 &&
	440	verify_parents $c1 $c2
	441	'
	442
df516fb5	443	test_debug 'git log --graph --decorate --oneline --all'
d08af0ad LH	444
	445	test_expect_success 'merge c1 with c2 (override --squash)' '
	446	git reset --hard c1 &&
	447	git config branch.master.mergeoptions "--squash" &&
	448	test_tick &&
	449	git merge --no-squash c2 &&
	450	verify_merge file result.1-5 msg.1-5 &&
	451	verify_parents $c1 $c2
	452	'
	453
df516fb5	454	test_debug 'git log --graph --decorate --oneline --all'
d08af0ad	455
d66424c4 LH	456	test_expect_success 'merge c0 with c1 (no-ff)' '
d66424c4 LH	457	git reset --hard c0 &&
e6d1f76c	458	git config branch.master.mergeoptions "" &&
d66424c4 LH	459	test_tick &&
	460	git merge --no-ff c1 &&
	461	verify_merge file result.1 &&
	462	verify_parents $c0 $c1
	463	'
	464
df516fb5	465	test_debug 'git log --graph --decorate --oneline --all'
d66424c4	466
f23e8dec JH	467	test_expect_success 'merge c0 with c1 (merge.ff=false)' '
	468	git reset --hard c0 &&
	469	git config merge.ff false &&
	470	test_tick &&
	471	git merge c1 &&
	472	git config --remove-section merge &&
	473	verify_merge file result.1 &&
	474	verify_parents $c0 $c1
	475	'
	476	test_debug 'git log --graph --decorate --oneline --all'
	477
	478	test_expect_success 'combine branch.master.mergeoptions with merge.ff' '
	479	git reset --hard c0 &&
	480	git config branch.master.mergeoptions --ff
	481	git config merge.ff false
	482	test_tick &&
	483	git merge c1 &&
	484	git config --remove-section "branch.master" &&
	485	git config --remove-section "merge" &&
	486	verify_merge file result.1 &&
	487	verify_parents "$c0"
	488	'
	489
e6d1f76c GP	490	test_expect_success 'combining --squash and --no-ff is refused' '
	491	test_must_fail git merge --squash --no-ff c1 &&
	492	test_must_fail git merge --no-ff --squash c1
	493	'
	494
13474835 BG	495	test_expect_success 'combining --ff-only and --no-ff is refused' '
	496	test_must_fail git merge --ff-only --no-ff c1 &&
	497	test_must_fail git merge --no-ff --ff-only c1
	498	'
	499
d66424c4 LH	500	test_expect_success 'merge c0 with c1 (ff overrides no-ff)' '
	501	git reset --hard c0 &&
	502	git config branch.master.mergeoptions "--no-ff" &&
	503	git merge --ff c1 &&
	504	verify_merge file result.1 &&
	505	verify_head $c1
	506	'
	507
efb779f8 SG	508	test_expect_success 'merge log message' '
	509	git reset --hard c0 &&
	510	git merge --no-log c2 &&
	511	git show -s --pretty=format:%b HEAD >msg.act &&
4c073457	512	test_cmp msg.nolog msg.act &&
4393c237	513
efb779f8 SG	514	git merge --log c3 &&
efb779f8 SG	515	git show -s --pretty=format:%b HEAD >msg.act &&
4c073457	516	test_cmp msg.log msg.act &&
4393c237 JH	517
	518	git reset --hard HEAD^ &&
	519	git config merge.log yes &&
	520	git merge c3 &&
	521	git show -s --pretty=format:%b HEAD >msg.act &&
4c073457	522	test_cmp msg.log msg.act
efb779f8 SG	523	'
efb779f8 SG	524
df516fb5	525	test_debug 'git log --graph --decorate --oneline --all'
d66424c4	526
3d1dd472 SHJ	527	test_expect_success 'merge c1 with c0, c2, c0, and c1' '
	528	git reset --hard c1 &&
	529	git config branch.master.mergeoptions "" &&
	530	test_tick &&
	531	git merge c0 c2 c0 c1 &&
	532	verify_merge file result.1-5 &&
	533	verify_parents $c1 $c2
	534	'
	535
df516fb5	536	test_debug 'git log --graph --decorate --oneline --all'
3d1dd472	537
711f6b29 JH	538	test_expect_success 'merge c1 with c0, c2, c0, and c1' '
	539	git reset --hard c1 &&
	540	git config branch.master.mergeoptions "" &&
	541	test_tick &&
	542	git merge c0 c2 c0 c1 &&
	543	verify_merge file result.1-5 &&
	544	verify_parents $c1 $c2
	545	'
	546
df516fb5	547	test_debug 'git log --graph --decorate --oneline --all'
711f6b29 JH	548
	549	test_expect_success 'merge c1 with c1 and c2' '
	550	git reset --hard c1 &&
	551	git config branch.master.mergeoptions "" &&
	552	test_tick &&
	553	git merge c1 c2 &&
	554	verify_merge file result.1-5 &&
	555	verify_parents $c1 $c2
	556	'
	557
df516fb5	558	test_debug 'git log --graph --decorate --oneline --all'
711f6b29	559
9ca8f607 JH	560	test_expect_success 'merge fast-forward in a dirty tree' '
	561	git reset --hard c0 &&
	562	mv file file1 &&
	563	cat file1 >file &&
	564	rm -f file1 &&
	565	git merge c2
	566	'
	567
df516fb5	568	test_debug 'git log --graph --decorate --oneline --all'
9ca8f607	569
157efde1	570	test_expect_success C_LOCALE_OUTPUT 'in-index merge' '
446247db	571	git reset --hard c0 &&
4c073457	572	git merge --no-ff -s resolve c1 >out &&
446247db JH	573	grep "Wonderful." out &&
	574	verify_parents $c0 $c1
	575	'
	576
df516fb5	577	test_debug 'git log --graph --decorate --oneline --all'
446247db	578
668f26ff MV	579	test_expect_success 'refresh the index before merging' '
668f26ff MV	580	git reset --hard c1 &&
016e5ff2	581	cp file file.n && mv -f file.n file &&
668f26ff MV	582	git merge c3
	583	'
	584
b81f925f JN	585	cat >expected.branch <<\EOF
	586	Merge branch 'c5-branch' (early part)
	587	EOF
	588	cat >expected.tag <<\EOF
	589	Merge commit 'c5~1'
4e6d4bc0 MV	590	EOF
	591
	592	test_expect_success 'merge early part of c2' '
	593	git reset --hard c3 &&
4c073457	594	echo c4 >c4.c &&
4e6d4bc0 MV	595	git add c4.c &&
	596	git commit -m c4 &&
	597	git tag c4 &&
4c073457	598	echo c5 >c5.c &&
4e6d4bc0 MV	599	git add c5.c &&
	600	git commit -m c5 &&
	601	git tag c5 &&
	602	git reset --hard c3 &&
4c073457	603	echo c6 >c6.c &&
4e6d4bc0 MV	604	git add c6.c &&
	605	git commit -m c6 &&
	606	git tag c6 &&
b81f925f JN	607	git branch -f c5-branch c5 &&
	608	git merge c5-branch~1 &&
	609	git show -s --pretty=format:%s HEAD >actual.branch &&
	610	git reset --keep HEAD^ &&
4e6d4bc0	611	git merge c5~1 &&
b81f925f JN	612	git show -s --pretty=format:%s HEAD >actual.tag &&
	613	test_cmp expected.branch actual.branch &&
	614	test_cmp expected.tag actual.tag
4e6d4bc0 MV	615	'
4e6d4bc0 MV	616
df516fb5	617	test_debug 'git log --graph --decorate --oneline --all'
668f26ff	618
cf10f9fd MV	619	test_expect_success 'merge --no-ff --no-commit && commit' '
	620	git reset --hard c0 &&
	621	git merge --no-ff --no-commit c1 &&
	622	EDITOR=: git commit &&
	623	verify_parents $c0 $c1
	624	'
	625
df516fb5	626	test_debug 'git log --graph --decorate --oneline --all'
cf10f9fd MV	627
	628	test_expect_success 'amending no-ff merge commit' '
	629	EDITOR=: git commit --amend &&
	630	verify_parents $c0 $c1
	631	'
	632
df516fb5	633	test_debug 'git log --graph --decorate --oneline --all'
cf10f9fd	634
a85d1b69	635	test_done