#!/bin/sh

test_description='Test cherry-pick continuation features

  + anotherpick: rewrites foo to d
  + picked: rewrites foo to c
  + unrelatedpick: rewrites unrelated to reallyunrelated
  + base: rewrites foo to b
  + initial: writes foo as a, unrelated as unrelated

'

. ./test-lib.sh

pristine_detach () {
	git cherry-pick --reset &&
	git checkout -f "$1^0" &&
	git read-tree -u --reset HEAD &&
	git clean -d -f -f -q -x
}

test_expect_success setup '
	echo unrelated >unrelated &&
	git add unrelated &&
	test_commit initial foo a &&
	test_commit base foo b &&
	test_commit unrelatedpick unrelated reallyunrelated &&
	test_commit picked foo c &&
	test_commit anotherpick foo d &&
	git config advice.detachedhead false

'

test_expect_success 'cherry-pick persists data on failure' '
	pristine_detach initial &&
	test_must_fail git cherry-pick -s base..anotherpick &&
	test_path_is_dir .git/sequencer &&
	test_path_is_file .git/sequencer/head &&
	test_path_is_file .git/sequencer/todo &&
	test_path_is_file .git/sequencer/opts
'

test_expect_success 'cherry-pick persists opts correctly' '
	pristine_detach initial &&
	test_must_fail git cherry-pick -s -m 1 --strategy=recursive -X patience -X ours base..anotherpick &&
	test_path_is_dir .git/sequencer &&
	test_path_is_file .git/sequencer/head &&
	test_path_is_file .git/sequencer/todo &&
	test_path_is_file .git/sequencer/opts &&
	echo "true" >expect &&
	git config --file=.git/sequencer/opts --get-all options.signoff >actual &&
	test_cmp expect actual &&
	echo "1" >expect &&
	git config --file=.git/sequencer/opts --get-all options.mainline >actual &&
	test_cmp expect actual &&
	echo "recursive" >expect &&
	git config --file=.git/sequencer/opts --get-all options.strategy >actual &&
	test_cmp expect actual &&
	cat >expect <<-\EOF &&
	patience
	ours
	EOF
	git config --file=.git/sequencer/opts --get-all options.strategy-option >actual &&
	test_cmp expect actual
'

test_expect_success 'cherry-pick cleans up sequencer state upon success' '
	pristine_detach initial &&
	git cherry-pick initial..picked &&
	test_path_is_missing .git/sequencer
'

test_expect_success '--reset does not complain when no cherry-pick is in progress' '
	pristine_detach initial &&
	git cherry-pick --reset
'

test_expect_success '--reset cleans up sequencer state' '
	pristine_detach initial &&
	test_must_fail git cherry-pick base..picked &&
	git cherry-pick --reset &&
	test_path_is_missing .git/sequencer
'

test_expect_success 'cherry-pick cleans up sequencer state when one commit is left' '
	pristine_detach initial &&
	test_must_fail git cherry-pick base..picked &&
	test_path_is_missing .git/sequencer &&
	echo "resolved" >foo &&
	git add foo &&
	git commit &&
	{
		git rev-list HEAD |
		git diff-tree --root --stdin |
		sed "s/$_x40/OBJID/g"
	} >actual &&
	cat >expect <<-\EOF &&
	OBJID
	:100644 100644 OBJID OBJID M	foo
	OBJID
	:100644 100644 OBJID OBJID M	unrelated
	OBJID
	:000000 100644 OBJID OBJID A	foo
	:000000 100644 OBJID OBJID A	unrelated
	EOF
	test_cmp expect actual
'

test_expect_success 'cherry-pick does not implicitly stomp an existing operation' '
	pristine_detach initial &&
	test_must_fail git cherry-pick base..anotherpick &&
	test-chmtime -v +0 .git/sequencer >expect &&
	test_must_fail git cherry-pick unrelatedpick &&
	test-chmtime -v +0 .git/sequencer >actual &&
	test_cmp expect actual
'

test_expect_success '--continue complains when no cherry-pick is in progress' '
	pristine_detach initial &&
	test_must_fail git cherry-pick --continue
'

test_expect_success '--continue complains when there are unresolved conflicts' '
	pristine_detach initial &&
	test_must_fail git cherry-pick base..anotherpick &&
	test_must_fail git cherry-pick --continue
'

test_expect_success '--continue continues after conflicts are resolved' '
	pristine_detach initial &&
	test_must_fail git cherry-pick base..anotherpick &&
	echo "c" >foo &&
	git add foo &&
	git commit &&
	git cherry-pick --continue &&
	test_path_is_missing .git/sequencer &&
	{
		git rev-list HEAD |
		git diff-tree --root --stdin |
		sed "s/$_x40/OBJID/g"
	} >actual &&
	cat >expect <<-\EOF &&
	OBJID
	:100644 100644 OBJID OBJID M	foo
	OBJID
	:100644 100644 OBJID OBJID M	foo
	OBJID
	:100644 100644 OBJID OBJID M	unrelated
	OBJID
	:000000 100644 OBJID OBJID A	foo
	:000000 100644 OBJID OBJID A	unrelated
	EOF
	test_cmp expect actual
'

test_expect_success '--continue respects opts' '
	pristine_detach initial &&
	test_must_fail git cherry-pick -x base..anotherpick &&
	echo "c" >foo &&
	git add foo &&
	git commit &&
	git cherry-pick --continue &&
	test_path_is_missing .git/sequencer &&
	git cat-file commit HEAD >anotherpick_msg &&
	git cat-file commit HEAD~1 >picked_msg &&
	git cat-file commit HEAD~2 >unrelatedpick_msg &&
	git cat-file commit HEAD~3 >initial_msg &&
	test_must_fail grep "cherry picked from" initial_msg &&
	grep "cherry picked from" unrelatedpick_msg &&
	grep "cherry picked from" picked_msg &&
	grep "cherry picked from" anotherpick_msg
'

test_expect_success '--signoff is not automatically propagated to resolved conflict' '
	pristine_detach initial &&
	test_must_fail git cherry-pick --signoff base..anotherpick &&
	echo "c" >foo &&
	git add foo &&
	git commit &&
	git cherry-pick --continue &&
	test_path_is_missing .git/sequencer &&
	git cat-file commit HEAD >anotherpick_msg &&
	git cat-file commit HEAD~1 >picked_msg &&
	git cat-file commit HEAD~2 >unrelatedpick_msg &&
	git cat-file commit HEAD~3 >initial_msg &&
	test_must_fail grep "Signed-off-by:" initial_msg &&
	grep "Signed-off-by:" unrelatedpick_msg &&
	test_must_fail grep "Signed-off-by:" picked_msg &&
	grep "Signed-off-by:" anotherpick_msg
'

test_expect_success 'malformed instruction sheet 1' '
	pristine_detach initial &&
	test_must_fail git cherry-pick base..anotherpick &&
	echo "resolved" >foo &&
	git add foo &&
	git commit &&
	sed "s/pick /pick/" .git/sequencer/todo >new_sheet &&
	cp new_sheet .git/sequencer/todo &&
	test_must_fail git cherry-pick --continue
'

test_expect_success 'malformed instruction sheet 2' '
	pristine_detach initial &&
	test_must_fail git cherry-pick base..anotherpick &&
	echo "resolved" >foo &&
	git add foo &&
	git commit &&
	sed "s/pick/revert/" .git/sequencer/todo >new_sheet &&
	cp new_sheet .git/sequencer/todo &&
	test_must_fail git cherry-pick --continue
'

test_done