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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
	sec=$(($sec+1))
	commit=$(echo "$text" | GIT_AUTHOR_DATE=$sec \
		git-commit-tree $tree $parents 2>>log2.txt)
	export $name=$commit
	echo $commit > .git/refs/heads/$branch
	eval ${branch}TIP=$commit
}
 
count_objects () {
	ls .git/objects/??/* 2>>log2.txt | wc -l | tr -d " "
}
 
test_expect_object_count () {
	message=$1
	count=$2
 
	output="$(count_objects)"
	test_expect_success \
		"new object count $message" \
		"test $count = $output"
}
 
pull_to_client () {
	number=$1
	heads=$2
	count=$3
	no_strict_count_check=$4
 
	cd client
	test_expect_success "$number pull" \
		"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/'`
 
	test_expect_success "fsck" 'git-fsck-objects --full > fsck.txt 2>&1'
 
	test_expect_success 'check downloaded results' \
	'mv .git/objects/pack/pack-* . &&
	 p=`ls -1 pack-*.pack` &&
	 git-unpack-objects <$p &&
	 git-fsck-objects --full'
 
	test_expect_success "new object count after $number pull" \
	'idx=`echo pack-*.idx` &&
	 pack_count=`git-show-index <$idx | wc -l` &&
	 test $pack_count = $count'
	test -z "$pack_count" && pack_count=0
	if [ -z "$no_strict_count_check" ]; then
		test_expect_success "minimal count" "test $count = $pack_count"
	else
		test $count != $pack_count && \
			echo "WARNING: $pack_count objects transmitted, only $count of which were needed"
	fi
	rm -f pack-*
	cd ..
}
 
# Here begins the actual testing
 
# A1 - ... - A20 - A21
#    \
#      B1  -   B2 - .. - B70
 
# client pulls A20, B1. Then tracks only B. Then pulls A.
 
(
	mkdir client &&
	cd client &&
	git_init_db 2>> log2.txt
)
 
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 "B A" $((11*3))
 
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 "B" $((64*3))
 
pull_to_client 3rd "A" $((1*3)) # old fails
 
test_done