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

test_expect_success 'clone shallow object count' '
(
cd shallow &&
git count-objects -v
) > count.shallow &&
grep "^in-pack: 18" 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 object count' '
(
cd shallow &&
git count-objects -v
) > count.shallow &&
grep "^count: 52" count.shallow
'

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: 6" 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: 6" > 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: 7" > 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: 7" > count7.expected &&
GIT_DIR=shallow7/.git git count-objects -v |
grep "^in-pack" > count7.actual &&
test_cmp count7.expected count7.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 &&
test_must_fail git fetch-pack --stdin --no-progress .. <../input.dup
) >output &&
cut -d " " -f 2 <output | sort >actual &&
test_cmp expect actual
'

test_done
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