#!/bin/sh
# Copyright (c) 2011, Google Inc.

test_description='adding and checking out large blobs'

. ./test-lib.sh

test_expect_success setup '
        # clone does not allow us to pass core.bigfilethreshold to
        # new repos, so set core.bigfilethreshold globally
        git config --global core.bigfilethreshold 200k &&
        echo X | dd of=large1 bs=1k seek=2000 &&
        echo X | dd of=large2 bs=1k seek=2000 &&
        echo X | dd of=large3 bs=1k seek=2000 &&
        echo Y | dd of=huge bs=1k seek=2500 &&
        GIT_ALLOC_LIMIT=1500k &&
        export GIT_ALLOC_LIMIT
'

test_expect_success 'add a large file or two' '
        git add large1 huge large2 &&
        # make sure we got a single packfile and no loose objects
        bad= count=0 idx= &&
        for p in .git/objects/pack/pack-*.pack
        do
                count=$(( $count + 1 ))
                if test -f "$p" && idx=${p%.pack}.idx && test -f "$idx"
                then
                        continue
                fi
                bad=t
        done &&
        test -z "$bad" &&
        test $count = 1 &&
        cnt=$(git show-index <"$idx" | wc -l) &&
        test $cnt = 2 &&
        for l in .git/objects/??/??????????????????????????????????????
        do
                test -f "$l" || continue
                bad=t
        done &&
        test -z "$bad" &&

        # attempt to add another copy of the same
        git add large3 &&
        bad= count=0 &&
        for p in .git/objects/pack/pack-*.pack
        do
                count=$(( $count + 1 ))
                if test -f "$p" && idx=${p%.pack}.idx && test -f "$idx"
                then
                        continue
                fi
                bad=t
        done &&
        test -z "$bad" &&
        test $count = 1
'

test_expect_success 'checkout a large file' '
        large1=$(git rev-parse :large1) &&
        git update-index --add --cacheinfo 100644 $large1 another &&
        git checkout another &&
        cmp large1 another ;# this must not be test_cmp
'

test_expect_success 'packsize limit' '
        test_create_repo mid &&
        (
                cd mid &&
                git config core.bigfilethreshold 64k &&
                git config pack.packsizelimit 256k &&

                # mid1 and mid2 will fit within 256k limit but
                # appending mid3 will bust the limit and will
                # result in a separate packfile.
                test-genrandom "a" $(( 66 * 1024 )) >mid1 &&
                test-genrandom "b" $(( 80 * 1024 )) >mid2 &&
                test-genrandom "c" $(( 128 * 1024 )) >mid3 &&
                git add mid1 mid2 mid3 &&

                count=0
                for pi in .git/objects/pack/pack-*.idx
                do
                        test -f "$pi" && count=$(( $count + 1 ))
                done &&
                test $count = 2 &&

                (
                        git hash-object --stdin <mid1
                        git hash-object --stdin <mid2
                        git hash-object --stdin <mid3
                ) |
                sort >expect &&

                for pi in .git/objects/pack/pack-*.idx
                do
                        git show-index <"$pi"
                done |
                sed -e "s/^[0-9]* \([0-9a-f]*\) .*/\1/" |
                sort >actual &&

                test_cmp expect actual
        )
'

test_expect_success 'diff --raw' '
        git commit -q -m initial &&
        echo modified >>large1 &&
        git add large1 &&
        git commit -q -m modified &&
        git diff --raw HEAD^
'

test_expect_success 'diff --stat' '
        git diff --stat HEAD^ HEAD
'

test_expect_success 'diff' '
        git diff HEAD^ HEAD >actual &&
        grep "Binary files.*differ" actual
'

test_expect_success 'diff --cached' '
        git diff --cached HEAD^ >actual &&
        grep "Binary files.*differ" actual
'

test_expect_success 'hash-object' '
        git hash-object large1
'

test_expect_success 'cat-file a large file' '
        git cat-file blob :large1 >/dev/null
'

test_expect_success 'cat-file a large file from a tag' '
        git tag -m largefile largefiletag :large1 &&
        git cat-file blob largefiletag >/dev/null
'

test_expect_success 'git-show a large file' '
        git show :large1 >/dev/null

'

test_expect_success 'index-pack' '
        git clone file://"$(pwd)"/.git foo &&
        GIT_DIR=non-existent git index-pack --strict --verify foo/.git/objects/pack/*.pack
'

test_expect_success 'repack' '
        git repack -ad
'

test_expect_success 'pack-objects with large loose object' '
        SHA1=$(git hash-object huge) &&
        test_create_repo loose &&
        echo $SHA1 | git pack-objects --stdout |
                GIT_ALLOC_LIMIT=0 GIT_DIR=loose/.git git unpack-objects &&
        echo $SHA1 | GIT_DIR=loose/.git git pack-objects pack &&
        test_create_repo packed &&
        mv pack-* packed/.git/objects/pack &&
        GIT_DIR=packed/.git git cat-file blob $SHA1 >actual &&
        cmp huge actual
'

test_expect_success 'tar achiving' '
        git archive --format=tar HEAD >/dev/null
'

test_expect_success 'zip achiving, store only' '
        git archive --format=zip -0 HEAD >/dev/null
'

test_expect_success 'zip achiving, deflate' '
        git archive --format=zip HEAD >/dev/null
'

test_expect_success 'fsck' '
        test_must_fail git fsck 2>err &&
        n=$(grep "error: attempting to allocate .* over limit" err | wc -l) &&
        test "$n" -gt 1
'

test_done