| #!/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 && | 
 | 	git show --format=%s -s >actual && | 
 | 	! grep c1 actual && | 
 | 	grep c2 actual && | 
 | 	grep c3 actual && | 
 | 	! grep c4 actual && | 
 | 	grep c5 actual | 
 | ' | 
 |  | 
 | test_expect_success 'pull c2, c3, c4, c5 into c1' ' | 
 | 	git reset --hard c1 && | 
 | 	git pull . 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 && | 
 | 	git show --format=%s -s >actual && | 
 | 	! grep c1 actual && | 
 | 	grep c2 actual && | 
 | 	grep c3 actual && | 
 | 	! grep c4 actual && | 
 | 	grep c5 actual | 
 | ' | 
 |  | 
 | test_expect_success 'setup' ' | 
 | 	for i in A B C D E | 
 | 	do | 
 | 		echo $i > $i.c && | 
 | 		git add $i.c && | 
 | 		git commit -m $i && | 
 | 		git tag $i | 
 | 	done && | 
 | 	git reset --hard A && | 
 | 	for i in F G H I | 
 | 	do | 
 | 		echo $i > $i.c && | 
 | 		git add $i.c && | 
 | 		git commit -m $i && | 
 | 		git tag $i | 
 | 	done | 
 | ' | 
 |  | 
 | test_expect_success 'merge E and I' ' | 
 | 	git reset --hard A && | 
 | 	git merge E I | 
 | ' | 
 |  | 
 | test_expect_success 'verify merge result' ' | 
 | 	test $(git rev-parse HEAD^1) = $(git rev-parse E) && | 
 | 	test $(git rev-parse HEAD^2) = $(git rev-parse I) | 
 | ' | 
 |  | 
 | test_expect_success 'add conflicts' ' | 
 | 	git reset --hard E && | 
 | 	echo foo > file.c && | 
 | 	git add file.c && | 
 | 	git commit -m E2 && | 
 | 	git tag E2 && | 
 | 	git reset --hard I && | 
 | 	echo bar >file.c && | 
 | 	git add file.c && | 
 | 	git commit -m I2 && | 
 | 	git tag I2 | 
 | ' | 
 |  | 
 | test_expect_success 'merge E2 and I2, causing a conflict and resolve it' ' | 
 | 	git reset --hard A && | 
 | 	test_must_fail git merge E2 I2 && | 
 | 	echo baz > file.c && | 
 | 	git add file.c && | 
 | 	git commit -m "resolve conflict" | 
 | ' | 
 |  | 
 | test_expect_success 'verify merge result' ' | 
 | 	test $(git rev-parse HEAD^1) = $(git rev-parse E2) && | 
 | 	test $(git rev-parse HEAD^2) = $(git rev-parse I2) | 
 | ' | 
 |  | 
 | test_expect_success 'fast-forward to redundant refs' ' | 
 | 	git reset --hard c0 && | 
 | 	git merge c4 c5 | 
 | ' | 
 |  | 
 | test_expect_success 'verify merge result' ' | 
 | 	test $(git rev-parse HEAD) = $(git rev-parse c5) | 
 | ' | 
 |  | 
 | test_expect_success 'merge up-to-date redundant refs' ' | 
 | 	git reset --hard c5 && | 
 | 	git merge c0 c4 | 
 | ' | 
 |  | 
 | test_expect_success 'verify merge result' ' | 
 | 	test $(git rev-parse HEAD) = $(git rev-parse c5) | 
 | ' | 
 |  | 
 | test_done |