#!/bin/sh

test_description='git patch-id'

. ./test-lib.sh

test_expect_success 'setup' '
	test_commit initial foo a &&
	test_commit first foo b &&
	git checkout -b same HEAD^ &&
	test_commit same-msg foo b &&
	git checkout -b notsame HEAD^ &&
	test_commit notsame-msg foo c
'

test_expect_success 'patch-id output is well-formed' '
	git log -p -1 | git patch-id > output &&
	grep "^[a-f0-9]\{40\} $(git rev-parse HEAD)$" output
'

get_patch_id () {
	git log -p -1 "$1" | git patch-id |
		sed "s# .*##" > patch-id_"$1"
}

test_expect_success 'patch-id detects equality' '
	get_patch_id master &&
	get_patch_id same &&
	test_cmp patch-id_master patch-id_same
'

test_expect_success 'patch-id detects inequality' '
	get_patch_id master &&
	get_patch_id notsame &&
	! test_cmp patch-id_master patch-id_notsame
'

test_done