Revision 48679e5c2d059b9b198d6f414dd80aa921d23002 authored by Eric Wong on 28 February 2009, 03:40:16 UTC, committed by Junio C Hamano on 28 February 2009, 05:53:09 UTC
Even though this will break things for some extremely rare repositories
used by broken Windows clients, it's probably not worth enabling this by
default as it has negatively affected many more users than it has helped
from what we've seen so far.

The extremely rare repositories that have broken symlinks in them will be
silently corrupted in import; but users can still reenable this option and
restart the import.

Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
1 parent 48fce93
Raw File
t7600-merge.sh
#!/bin/sh
#
# Copyright (c) 2007 Lars Hjemli
#

test_description='git merge

Testing basic merge operations/option parsing.'

. ./test-lib.sh

cat >file <<EOF
1
2
3
4
5
6
7
8
9
EOF

cat >file.1 <<EOF
1 X
2
3
4
5
6
7
8
9
EOF

cat >file.5 <<EOF
1
2
3
4
5 X
6
7
8
9
EOF

cat >file.9 <<EOF
1
2
3
4
5
6
7
8
9 X
EOF

cat  >result.1 <<EOF
1 X
2
3
4
5
6
7
8
9
EOF

cat >result.1-5 <<EOF
1 X
2
3
4
5 X
6
7
8
9
EOF

cat >result.1-5-9 <<EOF
1 X
2
3
4
5 X
6
7
8
9 X
EOF

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:" >squash.1 &&
	echo >>squash.1 &&
	git log --no-merges ^HEAD c1 >>squash.1 &&
	echo "Squashed commit of the following:" >squash.1-5 &&
	echo >>squash.1-5 &&
	git log --no-merges ^HEAD c2 >>squash.1-5 &&
	echo "Squashed commit of the following:" >squash.1-5-9 &&
	echo >>squash.1-5-9 &&
	git log --no-merges ^HEAD c2 c3 >>squash.1-5-9 &&
	echo > msg.nolog &&
	echo "* commit 'c3':" >msg.log &&
	echo "  commit 3" >>msg.log &&
	echo >>msg.log
}

verify_diff() {
	if ! test_cmp "$1" "$2"
	then
		echo "$3"
		false
	fi
}

verify_merge() {
	verify_diff "$2" "$1" "[OOPS] bad merge result" &&
	if test $(git ls-files -u | wc -l) -gt 0
	then
		echo "[OOPS] unmerged files"
		false
	fi &&
	if test_must_fail git diff --exit-code
	then
		echo "[OOPS] working tree != index"
		false
	fi &&
	if test -n "$3"
	then
		git show -s --pretty=format:%s HEAD >msg.act &&
		verify_diff "$3" msg.act "[OOPS] bad merge message"
	fi
}

verify_head() {
	if test "$1" != "$(git rev-parse HEAD)"
	then
		echo "[OOPS] HEAD != $1"
		false
	fi
}

verify_parents() {
	i=1
	while test $# -gt 0
	do
		if test "$1" != "$(git rev-parse HEAD^$i)"
		then
			echo "[OOPS] HEAD^$i != $1"
			return 1
		fi
		i=$(expr $i + 1)
		shift
	done
}

verify_mergeheads() {
	i=1
	if ! test -f .git/MERGE_HEAD
	then
		echo "[OOPS] MERGE_HEAD is missing"
		false
	fi &&
	while test $# -gt 0
	do
		head=$(head -n $i .git/MERGE_HEAD | sed -ne \$p)
		if test "$1" != "$head"
		then
			echo "[OOPS] MERGE_HEAD $i != $1"
			return 1
		fi
		i=$(expr $i + 1)
		shift
	done
}

verify_no_mergehead() {
	if test -f .git/MERGE_HEAD
	then
		echo "[OOPS] MERGE_HEAD exists"
		false
	fi
}


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 'gitk --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 'reject non-strategy with a git-merge-foo name' '
	test_must_fail git merge -s index c1
'

test_expect_success 'merge c0 with c1' '
	git reset --hard c0 &&
	git merge c1 &&
	verify_merge file result.1 &&
	verify_head "$c1"
'

test_debug 'gitk --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 'gitk --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 'gitk --all'

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 'gitk --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 'gitk --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 'gitk --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 &&
	verify_diff squash.1 .git/SQUASH_MSG "[OOPS] bad squash message"
'

test_debug 'gitk --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 &&
	verify_diff squash.1-5 .git/SQUASH_MSG "[OOPS] bad squash message"
'

test_debug 'gitk --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 &&
	verify_diff squash.1-5-9 .git/SQUASH_MSG "[OOPS] bad squash message"
'

test_debug 'gitk --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 'gitk --all'

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 &&
	verify_diff squash.1-5 .git/SQUASH_MSG "[OOPS] bad squash message"
'

test_debug 'gitk --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 'gitk --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 'gitk --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 'gitk --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 'gitk --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 'gitk --all'

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 '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 &&
	verify_diff msg.nolog msg.act "[OOPS] bad merge log message" &&

	git merge --log c3 &&
	git show -s --pretty=format:%b HEAD >msg.act &&
	verify_diff msg.log msg.act "[OOPS] bad merge log message" &&

	git reset --hard HEAD^ &&
	git config merge.log yes &&
	git merge c3 &&
	git show -s --pretty=format:%b HEAD >msg.act &&
	verify_diff msg.log msg.act "[OOPS] bad merge log message"
'

test_debug 'gitk --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 'gitk --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 'gitk --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 'gitk --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 'gitk --all'

test_expect_success 'in-index merge' '
	git reset --hard c0 &&
	git merge --no-ff -s resolve c1 > out &&
	grep "Wonderful." out &&
	verify_parents $c0 $c1
'

test_debug 'gitk --all'

test_expect_success 'refresh the index before merging' '
	git reset --hard c1 &&
	sleep 1 &&
	touch file &&
	git merge c3
'

cat >expected <<EOF
Merge branch 'c5' (early part)
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 merge c5~1 &&
	git show -s --pretty=format:%s HEAD > actual &&
	test_cmp actual expected
'

test_debug 'gitk --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 'gitk --all'

test_expect_success 'amending no-ff merge commit' '
	EDITOR=: git commit --amend &&
	verify_parents $c0 $c1
'

test_debug 'gitk --all'

test_done
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