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git/t/t5500-fetch-pack.sh
Nguyễn Thái Ngọc Duy cccf74e2da fetch, upload-pack: --deepen=N extends shallow boundary by N commits
In git-fetch, --depth argument is always relative with the latest
remote refs. This makes it a bit difficult to cover this use case,
where the user wants to make the shallow history, say 3 levels
deeper. It would work if remote refs have not moved yet, but nobody
can guarantee that, especially when that use case is performed a
couple months after the last clone or "git fetch --depth". Also,
modifying shallow boundary using --depth does not work well with
clones created by --since or --not.

This patch fixes that. A new argument --deepen=<N> will add <N> more (*)
parent commits to the current history regardless of where remote refs
are.

Have/Want negotiation is still respected. So if remote refs move, the
server will send two chunks: one between "have" and "want" and another
to extend shallow history. In theory, the client could send no "want"s
in order to get the second chunk only. But the protocol does not allow
that. Either you send no want lines, which means ls-remote; or you
have to send at least one want line that carries deep-relative to the
server..

The main work was done by Dongcan Jiang. I fixed it up here and there.
And of course all the bugs belong to me.

(*) We could even support --deepen=<N> where <N> is negative. In that
case we can cut some history from the shallow clone. This operation
(and --depth=<shorter depth>) does not require interaction with remote
side (and more complicated to implement as a result).

Helped-by: Duy Nguyen <pclouds@gmail.com>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Dongcan Jiang <dongcan.jiang@gmail.com>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-06-13 14:38:16 -07:00

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#!/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" &&
echo $commit > .git/refs/heads/$branch &&
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*)
echo $ATIP > .git/refs/heads/A;;
esac &&
case "$heads" in *B*)
echo $BTIP > .git/refs/heads/B;;
esac &&
git symbolic-ref HEAD refs/heads/$(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 &&
echo $ATIP > .git/refs/heads/A &&
echo $BTIP > .git/refs/heads/B &&
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 -s 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 $B68
'
test_expect_success 'deepening pull in shallow repo' '
(
cd shallow &&
git pull --depth 4 .. B
)
'
test_expect_success 'clone shallow object count' '
(
cd shallow &&
git count-objects -v
) > count.shallow &&
grep "^count: 12" count.shallow
'
test_expect_success 'deepening fetch in shallow repo' '
(
cd shallow &&
git fetch --depth 4 .. A:A
)
'
test_expect_success 'clone shallow object count' '
(
cd shallow &&
git count-objects -v
) > count.shallow &&
grep "^count: 18" count.shallow
'
test_expect_success 'pull in shallow repo with missing merge base' '
(
cd shallow &&
test_must_fail git pull --depth 4 .. A
)
'
test_expect_success 'additional simple shallow deepenings' '
(
cd shallow &&
git fetch --depth=8 &&
git fetch --depth=10 &&
git fetch --depth=11
)
'
test_expect_success 'clone shallow depth count' '
test "$(git --git-dir=shallow/.git rev-list --count HEAD)" = 11
'
test_expect_success 'clone shallow object count' '
(
cd shallow &&
git count-objects -v
) > count.shallow &&
grep "^count: 55" 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
grep "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 'fetch refs from cmdline' '
(
cd client &&
git fetch-pack --no-progress .. $(cat ../input)
) >output &&
cut -d " " -f 2 <output | sort >actual &&
test_cmp expect actual
'
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
) >/dev/null 2>error-m &&
test_cmp 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
) >/dev/null 2>error-em &&
test_cmp 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
) >/dev/null 2>error-me &&
test_cmp 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 '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
)
'
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 () {
local diagport
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 "fetch-pack --diag-url $p://$h/$r" '
check_prot_path $p://$h/$r $p "/$r"
'
# No "/~" -> "~" conversion for file
test_expect_success "fetch-pack --diag-url $p://$h/~$r" '
check_prot_path $p://$h/~$r $p "/~$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 '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_done