#!/bin/sh
set -e

TESTDIR="$(readlink -f "$(dirname "$0")")"
. "$TESTDIR/framework"
setupenvironment
configarchitecture "i386"

buildaptarchive
touch aptarchive/Packages
setupflataptarchive

testaptgetupdate() {
	rm -rf rootdir/var/lib/apt
	aptget update >testaptgetupdate.diff 2>&1 || true
	sed -i -e '/Ign /,+1d' -e '/Release/ d' -e 's#\[[0-9]* [kMGTPY]*B\]#\[\]#' testaptgetupdate.diff
	GIVEN="$1"
	shift
	msgtest "Test for correctness of" "apt-get update with $*"
	if [ -z "$GIVEN" ]; then
		echo -n "" | checkdiff - testaptgetupdate.diff && msgpass || msgfail
	else
		echo "$GIVEN" | checkdiff - testaptgetupdate.diff && msgpass || msgfail
	fi
	rm testaptgetupdate.diff
}

createemptyarchive() {
	find aptarchive/ \( -name "Packages*" -o -name "en*" \) -type f -delete
	touch aptarchive/Packages
	echo -n "" | $COMPRESSOR_CMD > aptarchive/${1}.$COMPRESS
	generatereleasefiles
	signreleasefiles
	rm -f aptarchive/Packages
}

createemptyfile() {
	find aptarchive/ \( -name "Packages*" -o -name "en*" \) -type f -delete
	touch aptarchive/Packages aptarchive/${1}.$COMPRESS
	generatereleasefiles
	signreleasefiles
	rm -f aptarchive/Packages
}

testoverfile() {
	local APTARCHIVE="$(readlink -f ./aptarchive)"
	forcecompressor "$1"

	createemptyarchive 'Packages'
	testaptgetupdate "Get:2 file:$APTARCHIVE  Packages []
Reading package lists..." "empty archive Packages.$COMPRESS over file"

	createemptyfile 'Packages'
	testaptgetupdate "Get:2 file:$APTARCHIVE  Packages
Err:2 file:$APTARCHIVE  Packages
  Empty files can't be valid archives
Reading package lists...
W: Failed to fetch ${COMPRESSOR}:${APTARCHIVE}/Packages.$COMPRESS  Empty files can't be valid archives
E: Some index files failed to download. They have been ignored, or old ones used instead." "empty file Packages.$COMPRESS over file"
}

testoverhttp() {
	forcecompressor "$1"

	createemptyarchive 'Packages'
	testaptgetupdate "Get:2 http://localhost:${APTHTTPPORT}  Packages []
Reading package lists..." "empty archive Packages.$COMPRESS over http"

	createemptyfile 'Packages'
	#FIXME: we should response with a good error message instead
	testaptgetupdate "Get:2 http://localhost:${APTHTTPPORT}  Packages
Err:2 http://localhost:${APTHTTPPORT}  Packages
  Empty files can't be valid archives
Reading package lists...
W: Failed to fetch ${COMPRESSOR}:$(readlink -f rootdir/var/lib/apt/lists/partial/localhost:${APTHTTPPORT}_Packages.${COMPRESS})  Empty files can't be valid archives
E: Some index files failed to download. They have been ignored, or old ones used instead." "empty file Packages.$COMPRESS over http"
}

for COMPRESSOR in 'gzip' 'bzip2' 'lzma' 'xz'; do testoverfile $COMPRESSOR; done

# do the same again with http instead of file
changetowebserver

for COMPRESSOR in 'gzip' 'bzip2' 'lzma' 'xz'; do testoverhttp $COMPRESSOR; done