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

test_description='adding and checking out large blobs'

. ./test-lib.sh

# This should be moved to test-lib.sh together with the
# copy in t0021 after both topics have graduated to 'master'.
file_size () {
        perl -e 'print -s $ARGV[0]' "$1"
}

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 &&
        printf "%2000000s" X >large1 &&
        cp large1 large2 &&
        cp large1 large3 &&
        printf "%2500000s" Y >huge &&
        GIT_ALLOC_LIMIT=1500k &&
        export GIT_ALLOC_LIMIT
'

# add a large file with different settings
while read expect config
do
        test_expect_success "add with $config" '
                test_when_finished "rm -f .git/objects/pack/pack-*.* .git/index" &&
                git $config add large1 &&
                sz=$(file_size .git/objects/pack/pack-*.pack) &&
                case "$expect" in
                small) test "$sz" -le 100000 ;;
                large) test "$sz" -ge 100000 ;;
                esac
        '
done <<\EOF
large -c core.compression=0
small -c core.compression=9
large -c core.compression=0 -c pack.compression=0
large -c core.compression=9 -c pack.compression=0
small -c core.compression=0 -c pack.compression=9
small -c core.compression=9 -c pack.compression=9
large -c pack.compression=0
small -c pack.compression=9
EOF

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 &&
        test_cmp large1 another
'

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-tool genrandom "a" $(( 66 * 1024 )) >mid1 &&
                test-tool genrandom "b" $(( 80 * 1024 )) >mid2 &&
                test-tool 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 &&
        test_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 large blobs' '
        git fsck 2>err &&
        test_must_be_empty err
'

test_done