#!/bin/sh
#
# Copyright (c) 2005 Junio C Hamano
#

test_description='git apply boundary tests

'
. ./test-lib.sh

L="c d e f g h i j k l m n o p q r s t u v w x"

test_expect_success setup '
        for i in b '"$L"' y
        do
                echo $i
        done >victim &&
        cat victim >original &&
        git update-index --add victim &&

        # add to the head
        for i in a b '"$L"' y
        do
                echo $i
        done >victim &&
        cat victim >add-a-expect &&
        git diff victim >add-a-patch.with &&
        git diff --unified=0 >add-a-patch.without &&

        # insert at line two
        for i in b a '"$L"' y
        do
                echo $i
        done >victim &&
        cat victim >insert-a-expect &&
        git diff victim >insert-a-patch.with &&
        git diff --unified=0 >insert-a-patch.without &&

        # modify at the head
        for i in a '"$L"' y
        do
                echo $i
        done >victim &&
        cat victim >mod-a-expect &&
        git diff victim >mod-a-patch.with &&
        git diff --unified=0 >mod-a-patch.without &&

        # remove from the head
        for i in '"$L"' y
        do
                echo $i
        done >victim &&
        cat victim >del-a-expect &&
        git diff victim >del-a-patch.with &&
        git diff --unified=0 >del-a-patch.without &&

        # add to the tail
        for i in b '"$L"' y z
        do
                echo $i
        done >victim &&
        cat victim >add-z-expect &&
        git diff victim >add-z-patch.with &&
        git diff --unified=0 >add-z-patch.without &&

        # modify at the tail
        for i in b '"$L"' z
        do
                echo $i
        done >victim &&
        cat victim >mod-z-expect &&
        git diff victim >mod-z-patch.with &&
        git diff --unified=0 >mod-z-patch.without &&

        # remove from the tail
        for i in b '"$L"'
        do
                echo $i
        done >victim &&
        cat victim >del-z-expect &&
        git diff victim >del-z-patch.with &&
        git diff --unified=0 >del-z-patch.without

        # done
'

for with in with without
do
        case "$with" in
        with) u= ;;
        without) u='--unidiff-zero ' ;;
        esac
        for kind in add-a add-z insert-a mod-a mod-z del-a del-z
        do
                test_expect_success "apply $kind-patch $with context" '
                        cat original >victim &&
                        git update-index victim &&
                        git apply --index '"$u$kind-patch.$with"' &&
                        test_cmp '"$kind"'-expect victim
                '
        done
done

for kind in add-a add-z insert-a mod-a mod-z del-a del-z
do
        rm -f $kind-ng.without
        sed     -e "s/^diff --git /diff /" \
                -e '/^index /d' \
                <$kind-patch.without >$kind-ng.without
        test_expect_success "apply non-git $kind-patch without context" '
                cat original >victim &&
                git update-index victim &&
                git apply --unidiff-zero --index '"$kind-ng.without"' &&
                test_cmp '"$kind"'-expect victim
        '
done

test_expect_success 'two lines' '

        >file &&
        git add file &&
        echo aaa >file &&
        git diff >patch &&
        git add file &&
        echo bbb >file &&
        git add file &&
        test_must_fail git apply --check patch

'

test_expect_success 'apply patch with 3 context lines matching at end' '
        { echo a; echo b; echo c; echo d; } >file &&
        git add file &&
        echo e >>file &&
        git diff >patch &&
        >file &&
        test_must_fail git apply patch
'

test_done