#!/bin/sh

setglobal test_description = ''test subject preservation with format-patch | am''
source ./test-lib.sh

proc make_patches {
	setglobal type = $1
	setglobal subject = $2
	test_expect_success "create patches with $type subject" '
		git reset --hard baseline &&
		echo $type >file &&
		git commit -a -m "$subject" &&
		git format-patch -1 --stdout >$type.patch &&
		git format-patch -1 --stdout -k >$type-k.patch
	'
}

proc check_subject {
	git reset --hard baseline &&
	git am $2 $1.patch &&
	git log -1 --pretty=format:%B >actual &&
	test_cmp expect actual
}

test_expect_success 'setup baseline commit' '
	test_commit baseline file
'

setglobal SHORT_SUBJECT = ''short subject''
make_patches short $SHORT_SUBJECT

setglobal LONG_SUBJECT1 = ''this is a long subject that is virtually guaranteed''
setglobal LONG_SUBJECT2 = ''to require wrapping via format-patch if it is all''
setglobal LONG_SUBJECT3 = ''going to appear on a single line''
setglobal LONG_SUBJECT = ""$LONG_SUBJECT1 $LONG_SUBJECT2 $LONG_SUBJECT3""
make_patches long $LONG_SUBJECT

setglobal MULTILINE_SUBJECT = ""$LONG_SUBJECT1
$LONG_SUBJECT2
$LONG_SUBJECT3""
make_patches multiline $MULTILINE_SUBJECT

echo $SHORT_SUBJECT >expect
test_expect_success 'short subject preserved (format-patch | am)' '
	check_subject short
'
test_expect_success 'short subject preserved (format-patch -k | am)' '
	check_subject short-k
'
test_expect_success 'short subject preserved (format-patch -k | am -k)' '
	check_subject short-k -k
'

echo $LONG_SUBJECT >expect
test_expect_success 'long subject preserved (format-patch | am)' '
	check_subject long
'
test_expect_success 'long subject preserved (format-patch -k | am)' '
	check_subject long-k
'
test_expect_success 'long subject preserved (format-patch -k | am -k)' '
	check_subject long-k -k
'

echo $LONG_SUBJECT >expect
test_expect_success 'multiline subject unwrapped (format-patch | am)' '
	check_subject multiline
'
test_expect_success 'multiline subject unwrapped (format-patch -k | am)' '
	check_subject multiline-k
'
echo $MULTILINE_SUBJECT >expect
test_expect_success 'multiline subject preserved (format-patch -k | am -k)' '
	check_subject multiline-k -k
'

test_done