#!/bin/sh
#
# Copyright (c) 2005 Johannes Schindelin
#

test_description='Testing multi_ack pack fetching'

. ./test-lib.sh

# Test fetch-pack/upload-pack pair.

# Some convenience functions

add () {
        name=$1 &&
        text="$@" &&
        branch=$(echo $name | sed -e 's/^\(.\).*$/\1/') &&
        parents="" &&

        shift &&
        while test $1; do
                parents="$parents -p $1" &&
                shift
        done &&

        echo "$text" > test.txt &&
        git update-index --add test.txt &&
        tree=$(git write-tree) &&
        # make sure timestamps are in correct order
        test_tick &&
        commit=$(echo "$text" | git commit-tree $tree $parents) &&
        eval "$name=$commit; export $name" &&
        git update-ref "refs/heads/$branch" "$commit" &&
        eval ${branch}TIP=$commit
}

pull_to_client () {
        number=$1 &&
        heads=$2 &&
        count=$3 &&
        test_expect_success "$number pull" '
                (
                        cd client &&
                        git fetch-pack -k -v .. $heads &&

                        case "$heads" in
                            *A*)
                                    git update-ref refs/heads/A "$ATIP";;
                        esac &&
                        case "$heads" in *B*)
                            git update-ref refs/heads/B "$BTIP";;
                        esac &&

                        git symbolic-ref HEAD refs/heads/$(
                                echo $heads |
                                sed -e "s/^\(.\).*$/\1/"
                        ) &&

                        git fsck --full &&

                        mv .git/objects/pack/pack-* . &&
                        p=$(ls -1 pack-*.pack) &&
                        git unpack-objects <$p &&
                        git fsck --full &&

                        idx=$(echo pack-*.idx) &&
                        pack_count=$(git show-index <$idx | wc -l) &&
                        test $pack_count = $count &&
                        rm -f pack-*
                )
        '
}

# Here begins the actual testing

# A1 - ... - A20 - A21
#    \
#      B1  -   B2 - .. - B70

# client pulls A20, B1. Then tracks only B. Then pulls A.

test_expect_success 'setup' '
        mkdir client &&
        (
                cd client &&
                git init &&
                git config transfer.unpacklimit 0
        ) &&
        add A1 &&
        prev=1 &&
        cur=2 &&
        while [ $cur -le 10 ]; do
                add A$cur $(eval echo \$A$prev) &&
                prev=$cur &&
                cur=$(($cur+1))
        done &&
        add B1 $A1 &&
        git update-ref refs/heads/A "$ATIP" &&
        git update-ref refs/heads/B "$BTIP" &&
        git symbolic-ref HEAD refs/heads/B
'

pull_to_client 1st "refs/heads/B refs/heads/A" $((11*3))

test_expect_success 'post 1st pull setup' '
        add A11 $A10 &&
        prev=1 &&
        cur=2 &&
        while [ $cur -le 65 ]; do
                add B$cur $(eval echo \$B$prev) &&
                prev=$cur &&
                cur=$(($cur+1))
        done
'

pull_to_client 2nd "refs/heads/B" $((64*3))

pull_to_client 3rd "refs/heads/A" $((1*3))

test_expect_success 'single branch clone' '
        git clone --single-branch "file://$(pwd)/." singlebranch
'

test_expect_success 'single branch object count' '
        GIT_DIR=singlebranch/.git git count-objects -v |
                grep "^in-pack:" > count.singlebranch &&
        echo "in-pack: 198" >expected &&
        test_cmp expected count.singlebranch
'

test_expect_success 'single given branch clone' '
        git clone --single-branch --branch A "file://$(pwd)/." branch-a &&
        test_must_fail git --git-dir=branch-a/.git rev-parse origin/B
'

test_expect_success 'clone shallow depth 1' '
        git clone --no-single-branch --depth 1 "file://$(pwd)/." shallow0 &&
        test "$(git --git-dir=shallow0/.git rev-list --count HEAD)" = 1
'

test_expect_success 'clone shallow depth 1 with fsck' '
        git config --global fetch.fsckobjects true &&
        git clone --no-single-branch --depth 1 "file://$(pwd)/." shallow0fsck &&
        test "$(git --git-dir=shallow0fsck/.git rev-list --count HEAD)" = 1 &&
        git config --global --unset fetch.fsckobjects
'

test_expect_success 'clone shallow' '
        git clone --no-single-branch --depth 2 "file://$(pwd)/." shallow
'

test_expect_success 'clone shallow depth count' '
        test "$(git --git-dir=shallow/.git rev-list --count HEAD)" = 2
'

test_expect_success 'clone shallow object count' '
        (
                cd shallow &&
                git count-objects -v
        ) > count.shallow &&
        grep "^in-pack: 12" count.shallow
'

test_expect_success 'clone shallow object count (part 2)' '
        sed -e "/^in-pack:/d" -e "/^packs:/d" -e "/^size-pack:/d" \
            -e "/: 0$/d" count.shallow > count_output &&
        test_must_be_empty count_output
'

test_expect_success 'fsck in shallow repo' '
        (
                cd shallow &&
                git fsck --full
        )
'

test_expect_success 'simple fetch in shallow repo' '
        (
                cd shallow &&
                git fetch
        )
'

test_expect_success 'no changes expected' '
        (
                cd shallow &&
                git count-objects -v
        ) > count.shallow.2 &&
        cmp count.shallow count.shallow.2
'

test_expect_success 'fetch same depth in shallow repo' '
        (
                cd shallow &&
                git fetch --depth=2
        )
'

test_expect_success 'no changes expected' '
        (
                cd shallow &&
                git count-objects -v
        ) > count.shallow.3 &&
        cmp count.shallow count.shallow.3
'

test_expect_success 'add two more' '
        add B66 $B65 &&
        add B67 $B66
'

test_expect_success 'pull in shallow repo' '
        (
                cd shallow &&
                git pull .. B
        )
'

test_expect_success 'clone shallow object count' '
        (
                cd shallow &&
                git count-objects -v
        ) > count.shallow &&
        grep "^count: 6" count.shallow
'

test_expect_success 'add two more (part 2)' '
        add B68 $B67 &&
        add B69 $B68
'

test_expect_success 'deepening pull in shallow repo' '
        (
                cd shallow &&
                git pull --depth 4 .. B
        )
'

test_expect_success 'clone shallow object count' '
        (
                cd shallow &&
                git count-objects -v
        ) > count.shallow &&
        grep "^count: 12" count.shallow
'

test_expect_success 'deepening fetch in shallow repo' '
        (
                cd shallow &&
                git fetch --depth 4 .. A:A
        )
'

test_expect_success 'clone shallow object count' '
        (
                cd shallow &&
                git count-objects -v
        ) > count.shallow &&
        grep "^count: 18" count.shallow
'

test_expect_success 'pull in shallow repo with missing merge base' '
        (
                cd shallow &&
                git fetch --depth 4 .. A &&
                test_must_fail git merge --allow-unrelated-histories FETCH_HEAD
        )
'

test_expect_success 'additional simple shallow deepenings' '
        (
                cd shallow &&
                git fetch --depth=8 &&
                git fetch --depth=10 &&
                git fetch --depth=11
        )
'

test_expect_success 'clone shallow depth count' '
        test "$(git --git-dir=shallow/.git rev-list --count HEAD)" = 11
'

test_expect_success 'clone shallow object count' '
        (
                cd shallow &&
                git prune &&
                git count-objects -v
        ) > count.shallow &&
        grep "^count: 54" count.shallow
'

test_expect_success 'fetch --no-shallow on full repo' '
        test_must_fail git fetch --noshallow
'

test_expect_success 'fetch --depth --no-shallow' '
        (
                cd shallow &&
                test_must_fail git fetch --depth=1 --noshallow
        )
'

test_expect_success 'turn shallow to complete repository' '
        (
                cd shallow &&
                git fetch --unshallow &&
                ! test -f .git/shallow &&
                git fsck --full
        )
'

test_expect_success 'clone shallow without --no-single-branch' '
        git clone --depth 1 "file://$(pwd)/." shallow2
'

test_expect_success 'clone shallow object count' '
        (
                cd shallow2 &&
                git count-objects -v
        ) > count.shallow2 &&
        grep "^in-pack: 3" count.shallow2
'

test_expect_success 'clone shallow with --branch' '
        git clone --depth 1 --branch A "file://$(pwd)/." shallow3
'

test_expect_success 'clone shallow object count' '
        echo "in-pack: 3" > count3.expected &&
        GIT_DIR=shallow3/.git git count-objects -v |
                grep "^in-pack" > count3.actual &&
        test_cmp count3.expected count3.actual
'

test_expect_success 'clone shallow with detached HEAD' '
        git checkout HEAD^ &&
        git clone --depth 1 "file://$(pwd)/." shallow5 &&
        git checkout - &&
        GIT_DIR=shallow5/.git git rev-parse HEAD >actual &&
        git rev-parse HEAD^ >expected &&
        test_cmp expected actual
'

test_expect_success 'shallow clone pulling tags' '
        git tag -a -m A TAGA1 A &&
        git tag -a -m B TAGB1 B &&
        git tag TAGA2 A &&
        git tag TAGB2 B &&
        git clone --depth 1 "file://$(pwd)/." shallow6 &&

        cat >taglist.expected <<\EOF &&
TAGB1
TAGB2
EOF
        GIT_DIR=shallow6/.git git tag -l >taglist.actual &&
        test_cmp taglist.expected taglist.actual &&

        echo "in-pack: 4" > count6.expected &&
        GIT_DIR=shallow6/.git git count-objects -v |
                grep "^in-pack" > count6.actual &&
        test_cmp count6.expected count6.actual
'

test_expect_success 'shallow cloning single tag' '
        git clone --depth 1 --branch=TAGB1 "file://$(pwd)/." shallow7 &&
        cat >taglist.expected <<\EOF &&
TAGB1
TAGB2
EOF
        GIT_DIR=shallow7/.git git tag -l >taglist.actual &&
        test_cmp taglist.expected taglist.actual &&

        echo "in-pack: 4" > count7.expected &&
        GIT_DIR=shallow7/.git git count-objects -v |
                grep "^in-pack" > count7.actual &&
        test_cmp count7.expected count7.actual
'

test_expect_success 'clone shallow with packed refs' '
        git pack-refs --all &&
        git clone --depth 1 --branch A "file://$(pwd)/." shallow8 &&
        echo "in-pack: 4" > count8.expected &&
        GIT_DIR=shallow8/.git git count-objects -v |
                grep "^in-pack" > count8.actual &&
        test_cmp count8.expected count8.actual
'

test_expect_success 'fetch in shallow repo unreachable shallow objects' '
        (
                git clone --bare --branch B --single-branch "file://$(pwd)/." no-reflog &&
                git clone --depth 1 "file://$(pwd)/no-reflog" shallow9 &&
                cd no-reflog &&
                git tag -d TAGB1 TAGB2 &&
                git update-ref refs/heads/B B~~ &&
                git gc --prune=now &&
                cd ../shallow9 &&
                git fetch origin &&
                git fsck --no-dangling
        )
'
test_expect_success 'fetch creating new shallow root' '
        (
                git clone "file://$(pwd)/." shallow10 &&
                git commit --allow-empty -m empty &&
                cd shallow10 &&
                git fetch --depth=1 --progress 2>actual &&
                # This should fetch only the empty commit, no tree or
                # blob objects
                test_i18ngrep "remote: Total 1" actual
        )
'

test_expect_success 'setup tests for the --stdin parameter' '
        for head in C D E F
        do
                add $head
        done &&
        for head in A B C D E F
        do
                git tag $head $head
        done &&
        cat >input <<-\EOF &&
        refs/heads/C
        refs/heads/A
        refs/heads/D
        refs/tags/C
        refs/heads/B
        refs/tags/A
        refs/heads/E
        refs/tags/B
        refs/tags/E
        refs/tags/D
        EOF
        sort <input >expect &&
        (
                echo refs/heads/E &&
                echo refs/tags/E &&
                cat input
        ) >input.dup
'

test_expect_success 'setup fetch refs from cmdline v[12]' '
        cp -r client client1 &&
        cp -r client client2
'

for version in '' 1 2
do
        test_expect_success "protocol.version=$version fetch refs from cmdline" "
                (
                        cd client$version &&
                        GIT_TEST_PROTOCOL_VERSION=$version git fetch-pack --no-progress .. \$(cat ../input)
                ) >output &&
                cut -d ' ' -f 2 <output | sort >actual &&
                test_cmp expect actual
        "
done

test_expect_success 'fetch refs from stdin' '
        (
                cd client &&
                git fetch-pack --stdin --no-progress .. <../input
        ) >output &&
        cut -d " " -f 2 <output | sort >actual &&
        test_cmp expect actual
'

test_expect_success 'fetch mixed refs from cmdline and stdin' '
        (
                cd client &&
                tail -n +5 ../input |
                git fetch-pack --stdin --no-progress .. $(head -n 4 ../input)
        ) >output &&
        cut -d " " -f 2 <output | sort >actual &&
        test_cmp expect actual
'

test_expect_success 'test duplicate refs from stdin' '
        (
        cd client &&
        git fetch-pack --stdin --no-progress .. <../input.dup
        ) >output &&
        cut -d " " -f 2 <output | sort >actual &&
        test_cmp expect actual
'

test_expect_success 'set up tests of missing reference' '
        cat >expect-error <<-\EOF
        error: no such remote ref refs/heads/xyzzy
        EOF
'

test_expect_success 'test lonely missing ref' '
        (
                cd client &&
                test_must_fail git fetch-pack --no-progress .. refs/heads/xyzzy 2>../error-m
        ) &&
        test_i18ncmp expect-error error-m
'

test_expect_success 'test missing ref after existing' '
        (
                cd client &&
                test_must_fail git fetch-pack --no-progress .. refs/heads/A refs/heads/xyzzy 2>../error-em
        ) &&
        test_i18ncmp expect-error error-em
'

test_expect_success 'test missing ref before existing' '
        (
                cd client &&
                test_must_fail git fetch-pack --no-progress .. refs/heads/xyzzy refs/heads/A 2>../error-me
        ) &&
        test_i18ncmp expect-error error-me
'

test_expect_success 'test --all, --depth, and explicit head' '
        (
                cd client &&
                git fetch-pack --no-progress --all --depth=1 .. refs/heads/A
        ) >out-adh 2>error-adh
'

test_expect_success 'test --all, --depth, and explicit tag' '
        git tag OLDTAG refs/heads/B~5 &&
        (
                cd client &&
                git fetch-pack --no-progress --all --depth=1 .. refs/tags/OLDTAG
        ) >out-adt 2>error-adt
'

test_expect_success 'test --all with tag to non-tip' '
        git commit --allow-empty -m non-tip &&
        git commit --allow-empty -m tip &&
        git tag -m "annotated" non-tip HEAD^ &&
        (
                cd client &&
                git fetch-pack --all ..
        )
'

test_expect_success 'test --all wrt tag to non-commits' '
        # create tag-to-{blob,tree,commit,tag}, making sure all tagged objects
        # are reachable only via created tag references.
        blob=$(echo "hello blob" | git hash-object -t blob -w --stdin) &&
        git tag -a -m "tag -> blob" tag-to-blob $blob &&

        tree=$(printf "100644 blob $blob\tfile" | git mktree) &&
        git tag -a -m "tag -> tree" tag-to-tree $tree &&

        tree2=$(printf "100644 blob $blob\tfile2" | git mktree) &&
        commit=$(git commit-tree -m "hello commit" $tree) &&
        git tag -a -m "tag -> commit" tag-to-commit $commit &&

        blob2=$(echo "hello blob2" | git hash-object -t blob -w --stdin) &&
        tag=$(git mktag <<-EOF
                object $blob2
                type blob
                tag tag-to-blob2
                tagger author A U Thor <author@example.com> 0 +0000

                hello tag
        EOF
        ) &&
        git tag -a -m "tag -> tag" tag-to-tag $tag &&

        # `fetch-pack --all` should succeed fetching all those objects.
        mkdir fetchall &&
        (
                cd fetchall &&
                git init &&
                git fetch-pack --all .. &&
                git cat-file blob $blob >/dev/null &&
                git cat-file tree $tree >/dev/null &&
                git cat-file commit $commit >/dev/null &&
                git cat-file tag $tag >/dev/null
        )
'

test_expect_success 'shallow fetch with tags does not break the repository' '
        mkdir repo1 &&
        (
                cd repo1 &&
                git init &&
                test_commit 1 &&
                test_commit 2 &&
                test_commit 3 &&
                mkdir repo2 &&
                cd repo2 &&
                git init &&
                git fetch --depth=2 ../.git master:branch &&
                git fsck
        )
'

test_expect_success 'fetch-pack can fetch a raw sha1' '
        git init hidden &&
        (
                cd hidden &&
                test_commit 1 &&
                test_commit 2 &&
                git update-ref refs/hidden/one HEAD^ &&
                git config transfer.hiderefs refs/hidden &&
                git config uploadpack.allowtipsha1inwant true
        ) &&
        git fetch-pack hidden $(git -C hidden rev-parse refs/hidden/one)
'

test_expect_success 'fetch-pack can fetch a raw sha1 that is advertised as a ref' '
        rm -rf server client &&
        git init server &&
        test_commit -C server 1 &&

        git init client &&
        git -C client fetch-pack ../server \
                $(git -C server rev-parse refs/heads/master)
'

test_expect_success 'fetch-pack can fetch a raw sha1 overlapping a named ref' '
        rm -rf server client &&
        git init server &&
        test_commit -C server 1 &&
        test_commit -C server 2 &&

        git init client &&
        git -C client fetch-pack ../server \
                $(git -C server rev-parse refs/tags/1) refs/tags/1
'

test_expect_success 'fetch-pack cannot fetch a raw sha1 that is not advertised as a ref' '
        rm -rf server &&

        git init server &&
        test_commit -C server 5 &&
        git -C server tag -d 5 &&
        test_commit -C server 6 &&

        git init client &&
        # Some protocol versions (e.g. 2) support fetching
        # unadvertised objects, so restrict this test to v0.
        test_must_fail env GIT_TEST_PROTOCOL_VERSION= git -C client fetch-pack ../server \
                $(git -C server rev-parse refs/heads/master^) 2>err &&
        test_i18ngrep "Server does not allow request for unadvertised object" err
'

check_prot_path () {
        cat >expected <<-EOF &&
        Diag: url=$1
        Diag: protocol=$2
        Diag: path=$3
        EOF
        git fetch-pack --diag-url "$1" | grep -v hostandport= >actual &&
        test_cmp expected actual
}

check_prot_host_port_path () {
        case "$2" in
                *ssh*)
                pp=ssh
                uah=userandhost
                ehost=$(echo $3 | tr -d "[]")
                diagport="Diag: port=$4"
                ;;
                *)
                pp=$p
                uah=hostandport
                ehost=$(echo $3$4 | sed -e "s/22$/:22/" -e "s/NONE//")
                diagport=""
                ;;
        esac
        cat >exp <<-EOF &&
        Diag: url=$1
        Diag: protocol=$pp
        Diag: $uah=$ehost
        $diagport
        Diag: path=$5
        EOF
        grep -v "^$" exp >expected
        git fetch-pack --diag-url "$1" >actual &&
        test_cmp expected actual
}

for r in repo re:po re/po
do
        # git or ssh with scheme
        for p in "ssh+git" "git+ssh" git ssh
        do
                for h in host user@host user@[::1] user@::1
                do
                        for c in "" :
                        do
                                test_expect_success "fetch-pack --diag-url $p://$h$c/$r" '
                                        check_prot_host_port_path $p://$h/$r $p "$h" NONE "/$r"
                                '
                                # "/~" -> "~" conversion
                                test_expect_success "fetch-pack --diag-url $p://$h$c/~$r" '
                                        check_prot_host_port_path $p://$h/~$r $p "$h" NONE "~$r"
                                '
                        done
                done
                for h in host User@host User@[::1]
                do
                        test_expect_success "fetch-pack --diag-url $p://$h:22/$r" '
                                check_prot_host_port_path $p://$h:22/$r $p "$h" 22 "/$r"
                        '
                done
        done
        # file with scheme
        for p in file
        do
                test_expect_success !MINGW "fetch-pack --diag-url $p://$h/$r" '
                        check_prot_path $p://$h/$r $p "/$r"
                '
                test_expect_success MINGW "fetch-pack --diag-url $p://$h/$r" '
                        check_prot_path $p://$h/$r $p "//$h/$r"
                '
                test_expect_success MINGW "fetch-pack --diag-url $p:///$r" '
                        check_prot_path $p:///$r $p "/$r"
                '
                # No "/~" -> "~" conversion for file
                test_expect_success !MINGW "fetch-pack --diag-url $p://$h/~$r" '
                        check_prot_path $p://$h/~$r $p "/~$r"
                '
                test_expect_success MINGW "fetch-pack --diag-url $p://$h/~$r" '
                        check_prot_path $p://$h/~$r $p "//$h/~$r"
                '
        done
        # file without scheme
        for h in nohost nohost:12 [::1] [::1]:23 [ [:aa
        do
                test_expect_success "fetch-pack --diag-url ./$h:$r" '
                        check_prot_path ./$h:$r $p "./$h:$r"
                '
                # No "/~" -> "~" conversion for file
                test_expect_success "fetch-pack --diag-url ./$p:$h/~$r" '
                check_prot_path ./$p:$h/~$r $p "./$p:$h/~$r"
                '
        done
        #ssh without scheme
        p=ssh
        for h in host [::1]
        do
                test_expect_success "fetch-pack --diag-url $h:$r" '
                        check_prot_host_port_path $h:$r $p "$h" NONE "$r"
                '
                # Do "/~" -> "~" conversion
                test_expect_success "fetch-pack --diag-url $h:/~$r" '
                        check_prot_host_port_path $h:/~$r $p "$h" NONE "~$r"
                '
        done
done

test_expect_success MINGW 'fetch-pack --diag-url file://c:/repo' '
        check_prot_path file://c:/repo file c:/repo
'
test_expect_success MINGW 'fetch-pack --diag-url c:repo' '
        check_prot_path c:repo file c:repo
'

test_expect_success 'clone shallow since ...' '
        test_create_repo shallow-since &&
        (
        cd shallow-since &&
        GIT_COMMITTER_DATE="100000000 +0700" git commit --allow-empty -m one &&
        GIT_COMMITTER_DATE="200000000 +0700" git commit --allow-empty -m two &&
        GIT_COMMITTER_DATE="300000000 +0700" git commit --allow-empty -m three &&
        git clone --shallow-since "300000000 +0700" "file://$(pwd)/." ../shallow11 &&
        git -C ../shallow11 log --pretty=tformat:%s HEAD >actual &&
        echo three >expected &&
        test_cmp expected actual
        )
'

test_expect_success 'fetch shallow since ...' '
        git -C shallow11 fetch --shallow-since "200000000 +0700" origin &&
        git -C shallow11 log --pretty=tformat:%s origin/master >actual &&
        cat >expected <<-\EOF &&
        three
        two
        EOF
        test_cmp expected actual
'

test_expect_success 'clone shallow since selects no commits' '
        test_create_repo shallow-since-the-future &&
        (
        cd shallow-since-the-future &&
        GIT_COMMITTER_DATE="100000000 +0700" git commit --allow-empty -m one &&
        GIT_COMMITTER_DATE="200000000 +0700" git commit --allow-empty -m two &&
        GIT_COMMITTER_DATE="300000000 +0700" git commit --allow-empty -m three &&
        test_must_fail git clone --shallow-since "900000000 +0700" "file://$(pwd)/." ../shallow111
        )
'

test_expect_success 'shallow clone exclude tag two' '
        test_create_repo shallow-exclude &&
        (
        cd shallow-exclude &&
        test_commit one &&
        test_commit two &&
        test_commit three &&
        git clone --shallow-exclude two "file://$(pwd)/." ../shallow12 &&
        git -C ../shallow12 log --pretty=tformat:%s HEAD >actual &&
        echo three >expected &&
        test_cmp expected actual
        )
'

test_expect_success 'fetch exclude tag one' '
        git -C shallow12 fetch --shallow-exclude one origin &&
        git -C shallow12 log --pretty=tformat:%s origin/master >actual &&
        test_write_lines three two >expected &&
        test_cmp expected actual
'

test_expect_success 'fetching deepen' '
        test_create_repo shallow-deepen &&
        (
        cd shallow-deepen &&
        test_commit one &&
        test_commit two &&
        test_commit three &&
        git clone --depth 1 "file://$(pwd)/." deepen &&
        test_commit four &&
        git -C deepen log --pretty=tformat:%s master >actual &&
        echo three >expected &&
        test_cmp expected actual &&
        git -C deepen fetch --deepen=1 &&
        git -C deepen log --pretty=tformat:%s origin/master >actual &&
        cat >expected <<-\EOF &&
        four
        three
        two
        EOF
        test_cmp expected actual
        )
'

test_expect_success 'use ref advertisement to prune "have" lines sent' '
        rm -rf server client &&
        git init server &&
        test_commit -C server both_have_1 &&
        git -C server tag -d both_have_1 &&
        test_commit -C server both_have_2 &&

        git clone server client &&
        test_commit -C server server_has &&
        test_commit -C client client_has &&

        # In both protocol v0 and v2, ensure that the parent of both_have_2 is
        # not sent as a "have" line. The client should know that the server has
        # both_have_2, so it only needs to inform the server that it has
        # both_have_2, and the server can infer the rest.

        rm -f trace &&
        cp -r client clientv0 &&
        GIT_TRACE_PACKET="$(pwd)/trace" git -C clientv0 \
                fetch origin server_has both_have_2 &&
        grep "have $(git -C client rev-parse client_has)" trace &&
        grep "have $(git -C client rev-parse both_have_2)" trace &&
        ! grep "have $(git -C client rev-parse both_have_2^)" trace &&

        rm -f trace &&
        cp -r client clientv2 &&
        GIT_TRACE_PACKET="$(pwd)/trace" git -C clientv2 -c protocol.version=2 \
                fetch origin server_has both_have_2 &&
        grep "have $(git -C client rev-parse client_has)" trace &&
        grep "have $(git -C client rev-parse both_have_2)" trace &&
        ! grep "have $(git -C client rev-parse both_have_2^)" trace
'

test_expect_success 'filtering by size' '
        rm -rf server client &&
        test_create_repo server &&
        test_commit -C server one &&
        test_config -C server uploadpack.allowfilter 1 &&

        test_create_repo client &&
        git -C client fetch-pack --filter=blob:limit=0 ../server HEAD &&

        # Ensure that object is not inadvertently fetched
        test_must_fail git -C client cat-file -e $(git hash-object server/one.t)
'

test_expect_success 'filtering by size has no effect if support for it is not advertised' '
        rm -rf server client &&
        test_create_repo server &&
        test_commit -C server one &&

        test_create_repo client &&
        git -C client fetch-pack --filter=blob:limit=0 ../server HEAD 2> err &&

        # Ensure that object is fetched
        git -C client cat-file -e $(git hash-object server/one.t) &&

        test_i18ngrep "filtering not recognized by server" err
'

fetch_filter_blob_limit_zero () {
        SERVER="$1"
        URL="$2"

        rm -rf "$SERVER" client &&
        test_create_repo "$SERVER" &&
        test_commit -C "$SERVER" one &&
        test_config -C "$SERVER" uploadpack.allowfilter 1 &&

        git clone "$URL" client &&
        test_config -C client extensions.partialclone origin &&

        test_commit -C "$SERVER" two &&

        git -C client fetch --filter=blob:limit=0 origin HEAD:somewhere &&

        # Ensure that commit is fetched, but blob is not
        test_config -C client extensions.partialclone "arbitrary string" &&
        git -C client cat-file -e $(git -C "$SERVER" rev-parse two) &&
        test_must_fail git -C client cat-file -e $(git hash-object "$SERVER/two.t")
}

test_expect_success 'fetch with --filter=blob:limit=0' '
        fetch_filter_blob_limit_zero server server
'

. "$TEST_DIRECTORY"/lib-httpd.sh
start_httpd

test_expect_success 'fetch with --filter=blob:limit=0 and HTTP' '
        fetch_filter_blob_limit_zero "$HTTPD_DOCUMENT_ROOT_PATH/server" "$HTTPD_URL/smart/server"
'

# DO NOT add non-httpd-specific tests here, because the last part of this
# test script is only executed when httpd is available and enabled.

test_done