#!/bin/sh

test_description='git-merge

Testing octopus merge when reducing parents to independent branches.'

. ./test-lib.sh

# 0 - 1
#   \ 2
#   \ 3
#   \ 4 - 5
#
# So 1, 2, 3 and 5 should be kept, 4 should be avoided.

test_expect_success 'setup' '
	echo c0 > c0.c &&
	git add c0.c &&
	git commit -m c0 &&
	git tag c0 &&
	echo c1 > c1.c &&
	git add c1.c &&
	git commit -m c1 &&
	git tag c1 &&
	git reset --hard c0 &&
	echo c2 > c2.c &&
	git add c2.c &&
	git commit -m c2 &&
	git tag c2 &&
	git reset --hard c0 &&
	echo c3 > c3.c &&
	git add c3.c &&
	git commit -m c3 &&
	git tag c3 &&
	git reset --hard c0 &&
	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
'

test_expect_success 'merge c1 with c2, c3, c4, c5' '
	git reset --hard c1 &&
	git merge c2 c3 c4 c5 &&
	test "$(git rev-parse c1)" != "$(git rev-parse HEAD)" &&
	test "$(git rev-parse c1)" = "$(git rev-parse HEAD^1)" &&
	test "$(git rev-parse c2)" = "$(git rev-parse HEAD^2)" &&
	test "$(git rev-parse c3)" = "$(git rev-parse HEAD^3)" &&
	test "$(git rev-parse c5)" = "$(git rev-parse HEAD^4)" &&
	git diff --exit-code &&
	test -f c0.c &&
	test -f c1.c &&
	test -f c2.c &&
	test -f c3.c &&
	test -f c4.c &&
	test -f c5.c
'

test_done

Add new test case to ensure git-merge reduces octopus parents when possible
Add new test case to ensure git-merge reduces octopus parents when possible

The old shell version used show-branch --independent to filter for the
ones that cannot be reached from any other reference.

The new C version uses reduce_heads() from commit.c for this, so
add test to ensure it works as expected.

Signed-off-by: Miklos Vajna <16f13092e03e3d9e997de904d0f86cc803fb6ef7@frugalware.org>
Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>
