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#!/usr/bin/env bats -*- bats -*-
#
# tests for podman healthcheck
#
#
load helpers
# Helper function: run 'podman inspect' and check various given fields
function _check_health {
local testname="$1"
local tests="$2"
run_podman inspect --format json healthcheck_c
parse_table "$tests" | while read field expect;do
# (kludge to deal with parse_table and empty strings)
if [ "$expect" = "''" ]; then expect=""; fi
actual=$(jq -r ".[0].State.Healthcheck.$field" <<<"$output")
is "$actual" "$expect" "$testname - .State.Healthcheck.$field"
done
}
@test "podman healthcheck" {
# Create an image with a healthcheck script; said script will
# pass until the file /uh-oh gets created (by us, via exec)
cat >${PODMAN_TMPDIR}/healthcheck <<EOF
#!/bin/sh
if test -e /uh-oh; then
echo "Uh-oh on stdout!"
echo "Uh-oh on stderr!" >&2
exit 1
else
echo "Life is Good on stdout"
echo "Life is Good on stderr" >&2
exit 0
fi
EOF
cat >${PODMAN_TMPDIR}/entrypoint <<EOF
#!/bin/sh
while :; do
sleep 1
done
EOF
cat >${PODMAN_TMPDIR}/Containerfile <<EOF
FROM $IMAGE
COPY healthcheck /healthcheck
COPY entrypoint /entrypoint
RUN chmod 755 /healthcheck /entrypoint
CMD ["/entrypoint"]
EOF
run_podman build -t healthcheck_i ${PODMAN_TMPDIR}
# Run that healthcheck image.
run_podman run -d --name healthcheck_c \
--health-cmd /healthcheck \
--health-interval 1s \
--health-retries 3 \
healthcheck_i
# We can't check for 'starting' because a 1-second interval is too
# short; it could run healthcheck before we get to our first check.
#
# So, just force a healthcheck run, then confirm that it's running.
run_podman healthcheck run healthcheck_c
is "$output" "healthy" "output from 'podman healthcheck run'"
_check_health "All healthy" "
Status | healthy
FailingStreak | 0
Log[-1].ExitCode | 0
Log[-1].Output |
"
# Force a failure
run_podman exec healthcheck_c touch /uh-oh
sleep 2
_check_health "First failure" "
Status | healthy
FailingStreak | [123]
Log[-1].ExitCode | 1
Log[-1].Output |
"
# After three successive failures, container should no longer be healthy
sleep 5
_check_health "Three or more failures" "
Status | unhealthy
FailingStreak | [3456]
Log[-1].ExitCode | 1
Log[-1].Output |
"
# healthcheck should now fail, with exit status 1 and 'unhealthy' output
run_podman 1 healthcheck run healthcheck_c
is "$output" "unhealthy" "output from 'podman healthcheck run'"
# Clean up
run_podman rm -f healthcheck_c
run_podman rmi healthcheck_i
}
# vim: filetype=sh
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