mirror of https://github.com/containers/podman.git
687 lines
21 KiB
Bash
687 lines
21 KiB
Bash
# -*- bash -*-
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# Podman command to run; may be podman-remote
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PODMAN=${PODMAN:-podman}
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# Standard image to use for most tests
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PODMAN_TEST_IMAGE_REGISTRY=${PODMAN_TEST_IMAGE_REGISTRY:-"quay.io"}
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PODMAN_TEST_IMAGE_USER=${PODMAN_TEST_IMAGE_USER:-"libpod"}
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PODMAN_TEST_IMAGE_NAME=${PODMAN_TEST_IMAGE_NAME:-"testimage"}
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PODMAN_TEST_IMAGE_TAG=${PODMAN_TEST_IMAGE_TAG:-"20210610"}
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PODMAN_TEST_IMAGE_FQN="$PODMAN_TEST_IMAGE_REGISTRY/$PODMAN_TEST_IMAGE_USER/$PODMAN_TEST_IMAGE_NAME:$PODMAN_TEST_IMAGE_TAG"
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PODMAN_TEST_IMAGE_ID=
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# Remote image that we *DO NOT* fetch or keep by default; used for testing pull
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# This has changed in 2021, from 0 through 3, various iterations of getting
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# multiarch to work. It should change only very rarely.
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PODMAN_NONLOCAL_IMAGE_TAG=${PODMAN_NONLOCAL_IMAGE_TAG:-"00000003"}
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PODMAN_NONLOCAL_IMAGE_FQN="$PODMAN_TEST_IMAGE_REGISTRY/$PODMAN_TEST_IMAGE_USER/$PODMAN_TEST_IMAGE_NAME:$PODMAN_NONLOCAL_IMAGE_TAG"
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# Because who wants to spell that out each time?
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IMAGE=$PODMAN_TEST_IMAGE_FQN
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# Default timeout for a podman command.
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PODMAN_TIMEOUT=${PODMAN_TIMEOUT:-120}
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# Prompt to display when logging podman commands; distinguish root/rootless
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_LOG_PROMPT='$'
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if [ $(id -u) -eq 0 ]; then
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_LOG_PROMPT='#'
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fi
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###############################################################################
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# BEGIN setup/teardown tools
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# Provide common setup and teardown functions, but do not name them such!
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# That way individual tests can override with their own setup/teardown,
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# while retaining the ability to include these if they so desire.
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# Some CI systems set this to runc, overriding the default crun.
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# Although it would be more elegant to override options in run_podman(),
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# we instead override $PODMAN itself because some tests (170-run-userns)
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# have to invoke $PODMAN directly.
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if [[ -n $OCI_RUNTIME ]]; then
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if [[ -z $CONTAINERS_CONF ]]; then
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# FIXME: BATS provides no mechanism for end-of-run cleanup[1]; how
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# can we avoid leaving this file behind when we finish?
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# [1] https://github.com/bats-core/bats-core/issues/39
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export CONTAINERS_CONF=$(mktemp --tmpdir=${BATS_TMPDIR:-/tmp} podman-bats-XXXXXXX.containers.conf)
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cat >$CONTAINERS_CONF <<EOF
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[engine]
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runtime="$OCI_RUNTIME"
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EOF
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fi
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fi
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# Setup helper: establish a test environment with exactly the images needed
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function basic_setup() {
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# Clean up all containers
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run_podman rm -t 0 --all --force
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# ...including external (buildah) ones
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run_podman ps --all --external --format '{{.ID}} {{.Names}}'
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for line in "${lines[@]}"; do
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set $line
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echo "# setup(): removing stray external container $1 ($2)" >&3
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run_podman rm $1
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done
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# Clean up all images except those desired
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found_needed_image=
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run_podman images --all --format '{{.Repository}}:{{.Tag}} {{.ID}}'
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for line in "${lines[@]}"; do
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set $line
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if [ "$1" == "$PODMAN_TEST_IMAGE_FQN" ]; then
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if [[ -z "$PODMAN_TEST_IMAGE_ID" ]]; then
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# This will probably only trigger the 2nd time through setup
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PODMAN_TEST_IMAGE_ID=$2
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fi
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found_needed_image=1
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else
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# Always remove image that doesn't match by name
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echo "# setup(): removing stray image $1" >&3
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run_podman rmi --force "$1" >/dev/null 2>&1 || true
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# Tagged image will have same IID as our test image; don't rmi it.
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if [[ $2 != "$PODMAN_TEST_IMAGE_ID" ]]; then
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echo "# setup(): removing stray image $2" >&3
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run_podman rmi --force "$2" >/dev/null 2>&1 || true
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fi
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fi
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done
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# Make sure desired images are present
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if [ -z "$found_needed_image" ]; then
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run_podman pull "$PODMAN_TEST_IMAGE_FQN"
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fi
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# Argh. Although BATS provides $BATS_TMPDIR, it's just /tmp!
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# That's bloody worthless. Let's make our own, in which subtests
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# can write whatever they like and trust that it'll be deleted
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# on cleanup.
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# TODO: do this outside of setup, so it carries across tests?
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PODMAN_TMPDIR=$(mktemp -d --tmpdir=${BATS_TMPDIR:-/tmp} podman_bats.XXXXXX)
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# In the unlikely event that a test runs is() before a run_podman()
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MOST_RECENT_PODMAN_COMMAND=
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}
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# Basic teardown: remove all pods and containers
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function basic_teardown() {
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echo "# [teardown]" >&2
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run_podman '?' pod rm -t 0 --all --force
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run_podman '?' rm -t 0 --all --force
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command rm -rf $PODMAN_TMPDIR
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}
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# Provide the above as default methods.
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function setup() {
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basic_setup
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}
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function teardown() {
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basic_teardown
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}
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# Helpers useful for tests running rmi
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function archive_image() {
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local image=$1
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# FIXME: refactor?
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archive_basename=$(echo $1 | tr -c a-zA-Z0-9._- _)
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archive=$BATS_TMPDIR/$archive_basename.tar
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run_podman save -o $archive $image
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}
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function restore_image() {
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local image=$1
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archive_basename=$(echo $1 | tr -c a-zA-Z0-9._- _)
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archive=$BATS_TMPDIR/$archive_basename.tar
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run_podman restore $archive
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}
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# END setup/teardown tools
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###############################################################################
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# BEGIN podman helpers
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################
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# run_podman # Invoke $PODMAN, with timeout, using BATS 'run'
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################
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#
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# This is the preferred mechanism for invoking podman: first, it
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# invokes $PODMAN, which may be 'podman-remote' or '/some/path/podman'.
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#
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# Second, we use 'timeout' to abort (with a diagnostic) if something
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# takes too long; this is preferable to a CI hang.
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#
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# Third, we log the command run and its output. This doesn't normally
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# appear in BATS output, but it will if there's an error.
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#
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# Next, we check exit status. Since the normal desired code is 0,
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# that's the default; but the first argument can override:
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#
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# run_podman 125 nonexistent-subcommand
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# run_podman '?' some-other-command # let our caller check status
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#
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# Since we use the BATS 'run' mechanism, $output and $status will be
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# defined for our caller.
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#
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function run_podman() {
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# Number as first argument = expected exit code; default 0
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expected_rc=0
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case "$1" in
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[0-9]) expected_rc=$1; shift;;
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[1-9][0-9]) expected_rc=$1; shift;;
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[12][0-9][0-9]) expected_rc=$1; shift;;
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'?') expected_rc= ; shift;; # ignore exit code
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esac
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# Remember command args, for possible use in later diagnostic messages
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MOST_RECENT_PODMAN_COMMAND="podman $*"
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# stdout is only emitted upon error; this echo is to help a debugger
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echo "$_LOG_PROMPT $PODMAN $*"
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# BATS hangs if a subprocess remains and keeps FD 3 open; this happens
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# if podman crashes unexpectedly without cleaning up subprocesses.
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run timeout --foreground -v --kill=10 $PODMAN_TIMEOUT $PODMAN $_PODMAN_TEST_OPTS "$@" 3>/dev/null
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# without "quotes", multiple lines are glommed together into one
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if [ -n "$output" ]; then
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echo "$output"
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fi
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if [ "$status" -ne 0 ]; then
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echo -n "[ rc=$status ";
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if [ -n "$expected_rc" ]; then
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if [ "$status" -eq "$expected_rc" ]; then
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echo -n "(expected) ";
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else
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echo -n "(** EXPECTED $expected_rc **) ";
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fi
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fi
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echo "]"
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fi
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if [ "$status" -eq 124 ]; then
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if expr "$output" : ".*timeout: sending" >/dev/null; then
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# It's possible for a subtest to _want_ a timeout
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if [[ "$expected_rc" != "124" ]]; then
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echo "*** TIMED OUT ***"
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false
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fi
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fi
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fi
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if [ -n "$expected_rc" ]; then
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if [ "$status" -ne "$expected_rc" ]; then
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die "exit code is $status; expected $expected_rc"
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fi
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fi
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}
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# Wait for certain output from a container, indicating that it's ready.
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function wait_for_output {
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local sleep_delay=5
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local how_long=$PODMAN_TIMEOUT
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local expect=
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local cid=
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# Arg processing. A single-digit number is how long to sleep between
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# iterations; a 2- or 3-digit number is the total time to wait; all
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# else are, in order, the string to expect and the container name/ID.
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local i
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for i in "$@"; do
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if expr "$i" : '[0-9]\+$' >/dev/null; then
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if [ $i -le 9 ]; then
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sleep_delay=$i
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else
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how_long=$i
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fi
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elif [ -z "$expect" ]; then
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expect=$i
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else
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cid=$i
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fi
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done
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[ -n "$cid" ] || die "FATAL: wait_for_output: no container name/ID in '$*'"
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t1=$(expr $SECONDS + $how_long)
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while [ $SECONDS -lt $t1 ]; do
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run_podman logs $cid
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logs=$output
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if expr "$logs" : ".*$expect" >/dev/null; then
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return
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fi
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# Barf if container is not running
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run_podman inspect --format '{{.State.Running}}' $cid
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if [ $output != "true" ]; then
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run_podman inspect --format '{{.State.ExitCode}}' $cid
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exitcode=$output
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die "Container exited (status: $exitcode) before we saw '$expect': $logs"
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fi
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sleep $sleep_delay
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done
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die "timed out waiting for '$expect' from $cid"
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}
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# Shortcut for the lazy
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function wait_for_ready {
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wait_for_output 'READY' "$@"
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}
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######################
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# random_free_port # Pick an available port within a specified range
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######################
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function random_free_port() {
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local range=${1:-5000-5999}
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local port
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for port in $(shuf -i ${range}); do
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if ! { exec {unused_fd}<> /dev/tcp/127.0.0.1/$port; } &>/dev/null; then
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echo $port
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return
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fi
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done
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die "Could not find open port in range $range"
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}
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###################
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# wait_for_port # Returns once port is available on host
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###################
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function wait_for_port() {
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local host=$1 # Probably "localhost"
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local port=$2 # Numeric port
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local _timeout=${3:-5} # Optional; default to 5 seconds
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# Wait
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while [ $_timeout -gt 0 ]; do
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{ exec {unused_fd}<> /dev/tcp/$host/$port; } &>/dev/null && return
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sleep 1
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_timeout=$(( $_timeout - 1 ))
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done
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die "Timed out waiting for $host:$port"
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}
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# END podman helpers
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###############################################################################
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# BEGIN miscellaneous tools
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# Shortcuts for common needs:
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function is_rootless() {
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[ "$(id -u)" -ne 0 ]
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}
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function is_remote() {
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[[ "$PODMAN" =~ -remote ]]
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}
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function is_cgroupsv1() {
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# WARNING: This will break if there's ever a cgroups v3
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! is_cgroupsv2
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}
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# True if cgroups v2 are enabled
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function is_cgroupsv2() {
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cgroup_type=$(stat -f -c %T /sys/fs/cgroup)
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test "$cgroup_type" = "cgroup2fs"
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}
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# Returns the OCI runtime *basename* (typically crun or runc). Much as we'd
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# love to cache this result, we probably shouldn't.
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function podman_runtime() {
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# This function is intended to be used as '$(podman_runtime)', i.e.
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# our caller wants our output. run_podman() messes with output because
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# it emits the command invocation to stdout, hence the redirection.
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run_podman info --format '{{ .Host.OCIRuntime.Name }}' >/dev/null
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basename "${output:-[null]}"
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}
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# rhbz#1895105: rootless journald is unavailable except to users in
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# certain magic groups; which our testuser account does not belong to
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# (intentional: that is the RHEL default, so that's the setup we test).
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function journald_unavailable() {
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if ! is_rootless; then
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# root must always have access to journal
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return 1
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fi
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run journalctl -n 1
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if [[ $status -eq 0 ]]; then
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return 1
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fi
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if [[ $output =~ permission ]]; then
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return 0
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fi
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# This should never happen; if it does, it's likely that a subsequent
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# test will fail. This output may help track that down.
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echo "WEIRD: 'journalctl -n 1' failed with a non-permission error:"
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echo "$output"
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return 1
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}
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###########################
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# _add_label_if_missing # make sure skip messages include rootless/remote
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###########################
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function _add_label_if_missing() {
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local msg="$1"
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local want="$2"
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if [ -z "$msg" ]; then
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echo
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elif expr "$msg" : ".*$want" &>/dev/null; then
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echo "$msg"
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else
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echo "[$want] $msg"
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fi
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}
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######################
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# skip_if_rootless # ...with an optional message
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######################
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function skip_if_rootless() {
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if is_rootless; then
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local msg=$(_add_label_if_missing "$1" "rootless")
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skip "${msg:-not applicable under rootless podman}"
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fi
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}
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####################
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# skip_if_remote # ...with an optional message
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####################
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function skip_if_remote() {
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if is_remote; then
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local msg=$(_add_label_if_missing "$1" "remote")
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skip "${msg:-test does not work with podman-remote}"
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fi
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}
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########################
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# skip_if_no_selinux #
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########################
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function skip_if_no_selinux() {
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if [ ! -e /usr/sbin/selinuxenabled ]; then
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skip "selinux not available"
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elif ! /usr/sbin/selinuxenabled; then
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skip "selinux disabled"
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fi
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}
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#######################
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# skip_if_cgroupsv1 # ...with an optional message
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#######################
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function skip_if_cgroupsv1() {
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if ! is_cgroupsv2; then
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skip "${1:-test requires cgroupsv2}"
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fi
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}
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######################
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# skip_if_rootless_cgroupsv1 # ...with an optional message
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######################
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function skip_if_rootless_cgroupsv1() {
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if is_rootless; then
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if ! is_cgroupsv2; then
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local msg=$(_add_label_if_missing "$1" "rootless cgroupvs1")
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skip "${msg:-not supported as rootless under cgroupsv1}"
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fi
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fi
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}
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##################################
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# skip_if_journald_unavailable # rhbz#1895105: rootless journald permissions
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##################################
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function skip_if_journald_unavailable {
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if journald_unavailable; then
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skip "Cannot use rootless journald on this system"
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fi
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}
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#########
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# die # Abort with helpful message
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#########
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function die() {
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# FIXME: handle multi-line output
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echo "#/vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv" >&2
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echo "#| FAIL: $*" >&2
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echo "#\\^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^" >&2
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false
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}
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########
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# is # Compare actual vs expected string; fail w/diagnostic if mismatch
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########
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#
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# Compares given string against expectations, using 'expr' to allow patterns.
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#
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# Examples:
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#
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# is "$actual" "$expected" "descriptive test name"
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# is "apple" "orange" "name of a test that will fail in most universes"
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# is "apple" "[a-z]\+" "this time it should pass"
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#
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function is() {
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local actual="$1"
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local expect="$2"
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local testname="${3:-${MOST_RECENT_PODMAN_COMMAND:-[no test name given]}}"
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local is_expr=
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if [ -z "$expect" ]; then
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if [ -z "$actual" ]; then
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# Both strings are empty.
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return
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fi
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expect='[no output]'
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elif [[ "$actual" = "$expect" ]]; then
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# Strings are identical.
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return
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else
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# Strings are not identical. Are there wild cards in our expect string?
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if expr "$expect" : ".*[^\\][\*\[]" >/dev/null; then
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# There is a '[' or '*' without a preceding backslash.
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is_expr=' (using expr)'
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elif [[ "${expect:0:1}" = '[' ]]; then
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# String starts with '[', e.g. checking seconds like '[345]'
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is_expr=' (using expr)'
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fi
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if [[ -n "$is_expr" ]]; then
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if expr "$actual" : "$expect" >/dev/null; then
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return
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fi
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fi
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fi
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# This is a multi-line message, which may in turn contain multi-line
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# output, so let's format it ourself, readably
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local -a actual_split
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readarray -t actual_split <<<"$actual"
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printf "#/vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv\n" >&2
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printf "#| FAIL: $testname\n" >&2
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printf "#| expected: '%s'%s\n" "$expect" "$is_expr" >&2
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|
printf "#| actual: '%s'\n" "${actual_split[0]}" >&2
|
|
local line
|
|
for line in "${actual_split[@]:1}"; do
|
|
printf "#| > '%s'\n" "$line" >&2
|
|
done
|
|
printf "#\\^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" >&2
|
|
false
|
|
}
|
|
|
|
|
|
############
|
|
# dprint # conditional debug message
|
|
############
|
|
#
|
|
# Set PODMAN_TEST_DEBUG to the name of one or more functions you want to debug
|
|
#
|
|
# Examples:
|
|
#
|
|
# $ PODMAN_TEST_DEBUG=parse_table bats .
|
|
# $ PODMAN_TEST_DEBUG="test_podman_images test_podman_run" bats .
|
|
#
|
|
function dprint() {
|
|
test -z "$PODMAN_TEST_DEBUG" && return
|
|
|
|
caller="${FUNCNAME[1]}"
|
|
|
|
# PODMAN_TEST_DEBUG is a space-separated list of desired functions
|
|
# e.g. "parse_table test_podman_images" (or even just "table")
|
|
for want in $PODMAN_TEST_DEBUG; do
|
|
# Check if our calling function matches any of the desired strings
|
|
if expr "$caller" : ".*$want" >/dev/null; then
|
|
echo "# ${FUNCNAME[1]}() : $*" >&3
|
|
return
|
|
fi
|
|
done
|
|
}
|
|
|
|
|
|
#################
|
|
# parse_table # Split a table on '|' delimiters; return space-separated
|
|
#################
|
|
#
|
|
# See sample .bats scripts for examples. The idea is to list a set of
|
|
# tests in a table, then use simple logic to iterate over each test.
|
|
# Columns are separated using '|' (pipe character) because sometimes
|
|
# we need spaces in our fields.
|
|
#
|
|
function parse_table() {
|
|
while read line; do
|
|
test -z "$line" && continue
|
|
|
|
declare -a row=()
|
|
while read col; do
|
|
dprint "col=<<$col>>"
|
|
row+=("$col")
|
|
done < <(echo "$line" | sed -E -e 's/(^|\s)\|(\s|$)/\n /g' | sed -e 's/^ *//' -e 's/\\/\\\\/g')
|
|
# the above seds:
|
|
# 1) Convert '|' to newline, but only if bracketed by spaces or
|
|
# at beginning/end of line (this allows 'foo|bar' in tests);
|
|
# 2) then remove leading whitespace;
|
|
# 3) then double-escape all backslashes
|
|
|
|
printf "%q " "${row[@]}"
|
|
printf "\n"
|
|
done <<<"$1"
|
|
}
|
|
|
|
|
|
###################
|
|
# random_string # Returns a pseudorandom human-readable string
|
|
###################
|
|
#
|
|
# Numeric argument, if present, is desired length of string
|
|
#
|
|
function random_string() {
|
|
local length=${1:-10}
|
|
|
|
head /dev/urandom | tr -dc a-zA-Z0-9 | head -c$length
|
|
}
|
|
|
|
|
|
###########################
|
|
# random_rfc1918_subnet #
|
|
###########################
|
|
#
|
|
# Use the class B set, because much of our CI environment (Google, RH)
|
|
# already uses up much of the class A, and it's really hard to test
|
|
# if a block is in use.
|
|
#
|
|
# This returns THREE OCTETS! It is up to our caller to append .0/24, .255, &c.
|
|
#
|
|
function random_rfc1918_subnet() {
|
|
local retries=1024
|
|
|
|
while [ "$retries" -gt 0 ];do
|
|
local cidr=172.$(( 16 + $RANDOM % 16 )).$(( $RANDOM & 255 ))
|
|
|
|
in_use=$(ip route list | fgrep $cidr)
|
|
if [ -z "$in_use" ]; then
|
|
echo "$cidr"
|
|
return
|
|
fi
|
|
|
|
retries=$(( retries - 1 ))
|
|
done
|
|
|
|
die "Could not find a random not-in-use rfc1918 subnet"
|
|
}
|
|
|
|
|
|
#########################
|
|
# find_exec_pid_files # Returns nothing or exec_pid hash files
|
|
#########################
|
|
#
|
|
# Return exec_pid hash files if exists, otherwise, return nothing
|
|
#
|
|
function find_exec_pid_files() {
|
|
run_podman info --format '{{.Store.RunRoot}}'
|
|
local storage_path="$output"
|
|
if [ -d $storage_path ]; then
|
|
find $storage_path -type f -iname 'exec_pid_*'
|
|
fi
|
|
}
|
|
|
|
|
|
#############################
|
|
# remove_same_dev_warning # Filter out useless warning from output
|
|
#############################
|
|
#
|
|
# On some CI systems, 'podman run --privileged' emits a useless warning:
|
|
#
|
|
# WARNING: The same type, major and minor should not be used for multiple devices.
|
|
#
|
|
# This obviously screws us up when we look at output results.
|
|
#
|
|
# This function removes the warning from $output and $lines. We don't
|
|
# do a full string match because there's another variant of that message:
|
|
#
|
|
# WARNING: Creating device "/dev/null" with same type, major and minor as existing "/dev/foodevdir/null".
|
|
#
|
|
# (We should never again see that precise error ever again, but we could
|
|
# see variants of it).
|
|
#
|
|
function remove_same_dev_warning() {
|
|
# No input arguments. We operate in-place on $output and $lines
|
|
|
|
local i=0
|
|
local -a new_lines=()
|
|
while [[ $i -lt ${#lines[@]} ]]; do
|
|
if expr "${lines[$i]}" : 'WARNING: .* same type, major' >/dev/null; then
|
|
:
|
|
else
|
|
new_lines+=("${lines[$i]}")
|
|
fi
|
|
i=$(( i + 1 ))
|
|
done
|
|
|
|
lines=("${new_lines[@]}")
|
|
output=$(printf '%s\n' "${lines[@]}")
|
|
}
|
|
|
|
# run 'podman help', parse the output looking for 'Available Commands';
|
|
# return that list.
|
|
function _podman_commands() {
|
|
dprint "$@"
|
|
run_podman help "$@" |
|
|
awk '/^Available Commands:/{ok=1;next}/^Options:/{ok=0}ok { print $1 }' |
|
|
grep .
|
|
"$output"
|
|
}
|
|
|
|
# END miscellaneous tools
|
|
###############################################################################
|