system-testing

#!/bin/sh
set -eu

curdir=$(readlink -f "${0%/*}")
bdebstrap_binary="${1-$curdir/bdebstrap}"
examples_dir="${2-$curdir/examples}"

DEB_HOST_ARCH=$(dpkg-architecture -q DEB_HOST_ARCH)

# change to temporary directory to not interfere with the source
cd "${AUTOPKGTEST_TMP-${TMPDIR-/tmp}}"

check_existing() {
    local directory="$1"
    shift

    for file in "$@"; do
        if test ! -e "${directory}/${file}"; then
            echo "Error: Expected generated file '${directory}/${file}' not found. Content of '${directory}':" >&2
            ls "${directory}"
            exit 1
        fi
    done
}

header() {
    printf "\n+------------------------------------------------------------------------------+\n"
    printf "| %-76s |\n" "$1"
    printf "+------------------------------------------------------------------------------+\n\n"
}

test_example1() {
    header "Example 1: Minimal Debian unstable tarball"
    "$bdebstrap_binary" -v -c "$examples_dir/Debian-unstable.yaml" --name example1 --mode root
    check_existing example1 config.yaml manifest root.tar.xz
    "$bdebstrap_binary" -v -c example1/config.yaml -o example1-rebuild
    check_existing example1-rebuild config.yaml manifest root.tar.xz
    echo "Info: Check that 'example1' and 'example1-rebuild' are bit-by-bit identical..."
    diffoscope example1 example1-rebuild
    rm -r example1 example1-rebuild
}

test_example2() {
    header "Example 2: Debian live system"
    sed '/  - upload ~/d' "$examples_dir/Debian-bullseye-live.yaml" > Debian-bullseye-live.yaml
    if test "$DEB_HOST_ARCH" != amd64; then
        # Use host architecture to avoid testing building for foreign architecture
        case "$DEB_HOST_ARCH" in
            arm64) kernel="linux-image-cloud-arm64" ;;
            armel) kernel="linux-image-rpi" ;;
            armhf) kernel="linux-image-armmp-lpae" ;;
            i386) kernel="linux-image-686-pae" ;;
            mips64el|mipsel) kernel="linux-image-octeon" ;;
            ppc64el) kernel="linux-image-powerpc64le" ;;
            *) kernel="linux-image-${DEB_HOST_ARCH}" ;;
        esac
        sed -i "s/linux-image-cloud-amd64/${kernel}/" Debian-bullseye-live.yaml
        sed -i "s/amd64/${DEB_HOST_ARCH}/" Debian-bullseye-live.yaml
    fi
    "$bdebstrap_binary" -v -c Debian-bullseye-live.yaml --packages iputils-ping --name example2 --mode root
    check_existing example2 config.yaml initrd.img manifest root.squashfs vmlinuz
    xattr=$(rdsquashfs -x /bin/ping example2/root.squashfs)
    if test -z "$xattr"; then
        echo "Error: /bin/ping from example2/root.squashfs lacks security xattrs!" >&2
        return 1
    else
        echo "Info: /bin/ping has xattrs: $xattr"
    fi
    rm -r example2
}

test_example3() {
    header "Example 3: Minimal Ubuntu 20.04 LTS tarball"
    case "$DEB_HOST_ARCH" in
        amd64|arm64|armhf|i386|ppc64el|riscv64|s390x)
            "$bdebstrap_binary" -v -c "$examples_dir/Ubuntu-20.04.yaml" --name example3 --mode root
            check_existing example3 config.yaml manifest root.tar.xz
            rm -r example3
            ;;
        *)
            echo "Info: Skipping this example, because Ubuntu does not support architecture ${DEB_HOST_ARCH}."
            ;;
    esac
}

test_example1
test_example2
test_example3